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introduction the loop current method is a small variation on the mesh current method . it accounts for two special cases that are bothersome for the mesh method . in this article we describe the special cases and show how to deal with them using the loop method . the loop current method , just like the mesh current met... | for planar circuits , we use the mesh current method and write the equations based on meshes . this always works for planar circuits . a non-planar circuit is shown below on the right . | also , can these rules be applied to circuits including inductors ? |
introduction the loop current method is a small variation on the mesh current method . it accounts for two special cases that are bothersome for the mesh method . in this article we describe the special cases and show how to deal with them using the loop method . the loop current method , just like the mesh current met... | assign a current variable to each mesh or loop , using a consistent direction ( clockwise or counterclockwise ) . write kirchhoff 's voltage law equations around each mesh and loop . solve the resulting system of equations for all mesh and loop currents . solve for any element currents and voltages you want using ohm '... | can i solve any circuit by ohm 's law instead of loop analysis ? |
introduction the loop current method is a small variation on the mesh current method . it accounts for two special cases that are bothersome for the mesh method . in this article we describe the special cases and show how to deal with them using the loop method . the loop current method , just like the mesh current met... | every element needs to have a chance to influence the solution . make sure at least one element in each loop is not part of any other loop or mesh . this assures the loop equations are independent . | so how do we determine when to utilize which one ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | the electric constant , $ \epsilon_0 $ , describes the experimental setup and the system of units . `` experimental conditions '' refers measuring $ \vec f $ on point charges ( or something that acts like a point charge , like charged spheres ) . in the si system of units , $ { \epsilon_0 } $ is experimentally measured... | what do you have to have to be one of those people who make robots for space missions and stuff like that ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | in the si system of units , $ { \epsilon_0 } $ is experimentally measured to be , $ \epsilon_0 = 8.854 187 817 \times 10^ { −12 } $ coulombs $ ^2/ $ newton-meter $ ^2 $ this value of $ e_0 $ makes , $ k = \dfrac { 1 } { 4\pi \epsilon_0 } = \dfrac { 1 } { 4\pi \cdot 8.854 \times 10^ { −12 } } = 8.987 \times 10^ { 9 } $ ... | would n't antimatter interacting with matter be an example of a repulsive gravitational force ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | in the si system of units , $ { \epsilon_0 } $ is experimentally measured to be , $ \epsilon_0 = 8.854 187 817 \times 10^ { −12 } $ coulombs $ ^2/ $ newton-meter $ ^2 $ this value of $ e_0 $ makes , $ k = \dfrac { 1 } { 4\pi \epsilon_0 } = \dfrac { 1 } { 4\pi \cdot 8.854 \times 10^ { −12 } } = 8.987 \times 10^ { 9 } $ ... | in the first example should n't the direction of f12 be from q2 to q1 ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . | is there a force between an uncharged particle and an electron ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | $ q_0 $ and $ q_1 $ represent the amount of charge on each body , in units of coulombs ( the si unit for charge ) . $ r $ is the distance between the charged bodies . $ \hat r $ is a variable unit vector that reminds us the force points along the line between the two charges . | would the negatively charged particle be repelled from only one of the positively charged particles or both ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | charge how do we know there is such a thing as charge ? the concept of charge arises from an observation of nature : we observe forces between objects . electric charge is the property of objects that gives rise to this observed force . | can you elaborate the concept of `` vaccum permitivity '' ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | the force vectors form the sides of a 3-4-5 right triangle . the magnitude of the resultant force is , $ f_2 = k \cdot \sqrt { 3^2 + 4^2 } = k \cdot 5 $ figure out angle $ \angle \vec f_2 $ by counting degrees from horizontal , starting at $ q_0 $ ( the $ 4\ , c $ charge ) , $ \angle \vec f_2 = -30 ^ { \circ } + 36.9 ^... | what happened to 6.24 x 10 to the power of 18 ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | in the si system of units , $ { \epsilon_0 } $ is experimentally measured to be , $ \epsilon_0 = 8.854 187 817 \times 10^ { −12 } $ coulombs $ ^2/ $ newton-meter $ ^2 $ this value of $ e_0 $ makes , $ k = \dfrac { 1 } { 4\pi \epsilon_0 } = \dfrac { 1 } { 4\pi \cdot 8.854 \times 10^ { −12 } } = 8.987 \times 10^ { 9 } $ ... | in the example of 3 point charges , i am confused about how was the angle of vector f2 determined ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | unlike gravity , there are two types of electric charge , ( whereas there is only one type of gravity ; gravity only attracts ) . unlike charges attract , like charges repel , force between charges : coulomb 's law of electric force coulomb 's law very nicely describes this natural phenomenon . the law has this form , ... | is gravatiy one of the charges ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | the final step is to perform a vector sum to get the magnitude and direction of the final force vector . the force vectors form the sides of a 3-4-5 right triangle . the magnitude of the resultant force is , $ f_2 = k \cdot \sqrt { 3^2 + 4^2 } = k \cdot 5 $ figure out angle $ \angle \vec f_2 $ by counting degrees from ... | what is the concept of merging thehe triangle paart ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . | how do i got hire than my grade ? |
our study of electricity begins with electrostatics and the electrostatic force , one of the four fundamental forces of nature . electrostatic force is described by coulomb 's law . we use coulomb 's law to solve the forces created by configurations of charge . electrostatics deals with forces between charges . static ... | static means the charges are not moving , or at least are not moving very fast . charge how do we know there is such a thing as charge ? the concept of charge arises from an observation of nature : we observe forces between objects . | what is the effect of speed on an electric charge ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | you should not try to argue with the writer in your response. ” for the whole test : do n't leave anything blank . `` on the new sat , there is no penalty for guessing , so if you don ’ t know an answer , go ahead and guess – you might get lucky ! ” use process of elimination . “ crossing out choices as you go along re... | what is the difference between the act and the sat ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | i found i often would switch from the right answer to a wrong one just because i doubted myself ! '' bubble in batches . “ i use a system that helps me avoid accidentally bubbling in the wrong answers . | what is the best way to bubble in answers ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | and examine the impact of those assumptions . you should not try to argue with the writer in your response. ” for the whole test : do n't leave anything blank . `` on the new sat , there is no penalty for guessing , so if you don ’ t know an answer , go ahead and guess – you might get lucky ! ” use process of eliminati... | does the sat not want you to leave a question blank ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | but do n't wait until the end of the test to bubble in everything , or you might panic – or even run out of time before you have a chance to enter all your answers ! ” use any extra time wisely . `` if you find yourself with extra time at the end of a section , make good use of it . no , it isn't fun to re-read all of ... | and in the essay section , what is the minimum amount of lines/paragraphs that i should write ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | now i like to circle or underline the most important parts of each paragraph , and maybe jot a + or a - or a check . sometimes a word or two , maybe a ! or a ? | do we bring our whole backpack , or maybe just a small purse ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | keep in mind that everyone is different , and all of these do n't work for everyone , so it ’ s always better to try them out before you actually use them on test day . for the math test : underline key parts of the problem . “ i was making silly mistakes because i didn ’ t read carefully what the questions were asking... | what is the recommended math level to be completed before taking the sat ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | `` some sentences are so long and confusing ! i find it really helpful to identify the subject and the verb of more complicated sentences and cross out extra stuff like prepositional clauses beginning with of , for , about , with , etc ... '' for the essay : do n't tell them your opinion . “ remember that you are being... | is the sat essay similar to the ap english 11 rhetorical analysis essay ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | also - the math sections always have a few grid-ins ( student-produced response questions ) after the multiple choice questions , and the first few grid-ins are always easier than the last few multiple choice ones , so do n't waste time on the hardest multiple choice before picking up some easier points in the grid-ins... | getting a score of 8/7/7 in the essay on ka mostly likely indicates how much score in actual ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | make sure you are answering the question being asked . `` always double check to make sure you 're answering the right question ! ” order of difficulty “ sections in the math test increase in difficulty as you go along : the questions start out easier , then slowly get harder , with the hardest questions at the end of ... | is it true that for the sat or psat , questions always are given in order of the passage ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | drink lots of water and load up with complex carbohydrates , just like marathon runners do : potatoes , pasta , and rice are good choices here , as well as protein and vegetables . organize your bag for test day . the night before is the time to put your id , admission ticket , pencils , calculator , batteries and othe... | is a 2b pencil okay for the test ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | you should not try to argue with the writer in your response. ” for the whole test : do n't leave anything blank . `` on the new sat , there is no penalty for guessing , so if you don ’ t know an answer , go ahead and guess – you might get lucky ! ” use process of elimination . “ crossing out choices as you go along re... | what is the date for upcoming sat after dec ? |
the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . the night before : relax ! there are a lot of good reasons not to study the night before test day . mar... | the big day is finally here : you ’ ve studied , you ’ ve practiced , and you ’ ve gotten a good night ’ s sleep . the last hurdle is just to take the test ! one key to overcoming test day anxiety is to have a plan . | can i take like a few mini chocolate bars just in case ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | for non-farmers , this meant that they could focus on making other goods and trading these goods for food and other things . people could specialize—focus on doing one thing—which led to increased productivity . increased productivity led to the creation of better buildings , tools , weapons , and also to the rise of g... | how did farming occur if we did n't know a single thing about it ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | this theory still has several open questions : 1 ) why have we not found evidence of agriculture during the last interglacial—warmer—period over 100,000 years ago ? have we just not found it yet ? 2 ) even during the glacial period , weren ’ t there some places on earth in the tropics that would have still been suitabl... | how could we have found out that we can farm ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | with only hunting and foraging to support human populations , it is estimated that the earth could only support about 10 million people . historians estimate the world population was around six to ten million 10,000 years ago . the birth of agriculture about 10,000 to 15,000 years ago , humans began to mold nature to t... | how do scientist know their were 6-10 million people on the planet 10,000 years ago ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | with only hunting and foraging to support human populations , it is estimated that the earth could only support about 10 million people . historians estimate the world population was around six to ten million 10,000 years ago . the birth of agriculture about 10,000 to 15,000 years ago , humans began to mold nature to t... | how come people 10000-15000 years ago knew to kill the animals and how did they know to use their tools and not things like their hands ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | why did n't all societies prefer agriculture ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | agriculture also has had environmental impacts . farmers used complex tools to cultivate and irrigate their fields and to build settlements . to expand their amount of usable land , agriculturalists cleared forests using the slash and burn technique ; they would remove a ring of bark from the trees , drying out the tre... | how were the tools use and made ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | what do you think is the most compelling theory about the birth of agriculture ? what are the advantages and disadvantages of hunting and foraging versus agriculture ? | what are the advantages and disadvantages of hunting and foraging versus agriculture ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | pastoralism : a branch of agriculture a branch of agriculture—called pastoralism—began around the same time as cultivation of plants . pastoralism is the domestication and herding of animals such as goats , sheep , and cattle . in regions where plant cultivation proved difficult due to rocky terrain or climates that we... | if a society had both hunter-gatherers and farmers , would the society advance shorter than others , due to the cultivation of crops , domestication of animals , and discovery of new crops and animals ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | in roughly 10,000 to 15,000 years , advances in agriculture have allowed the human population to become roughly 1000 times larger ! agriculture also has had environmental impacts . farmers used complex tools to cultivate and irrigate their fields and to build settlements . | what environmental changes caused the end of the ice age ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | because of this , a tribe of 100 hunter-foragers would have needed to be the only humans on 50 to 500 square kilometers to survive—places lush with life , like tropical rain forests , could support a higher density . with only hunting and foraging to support human populations , it is estimated that the earth could only... | why does the earth go through hot and cold cycles ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | one way to think about it is that we replaced things that weren ’ t consumable by humans with things that were . through techniques like irrigation , we were also able to make things grow where they might not have before . to put this in perspective , before the agricultural revolution experts estimate that there were ... | how did we make tools if you need tools make tools like for example the holes in handles like the image under `` the birth of agriculture '' ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . | how healthy were the hunters and gatherers ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | 2 ) even during the glacial period , weren ’ t there some places on earth in the tropics that would have still been suitable for agriculture ? continued human development : even though anatomically modern humans have been around for roughly 200,000 years , our brains , language , and culture may have continued to devel... | during their farming years , did they ever had droughts , bad soil that killed the crops , pests that ate their crops , & have bad climate change that destroyed their crops ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | for non-farmers , this meant that they could focus on making other goods and trading these goods for food and other things . people could specialize—focus on doing one thing—which led to increased productivity . increased productivity led to the creation of better buildings , tools , weapons , and also to the rise of g... | how did farming occur if we did n't know a single thing about it ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | this theory still has several open questions : 1 ) why have we not found evidence of agriculture during the last interglacial—warmer—period over 100,000 years ago ? have we just not found it yet ? 2 ) even during the glacial period , weren ’ t there some places on earth in the tropics that would have still been suitabl... | how could we have found out that we can farm ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | to put this in perspective , before the agricultural revolution experts estimate that there were six to ten million people , which is about how many hunter-foragers the earth could sustain . by the time of the roman empire , about 10,000 years later , the world population had grown over 25-fold to 250 million . fast fo... | does anyone know where the greatest areas of population density at this time were ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | the birth of agriculture about 10,000 to 15,000 years ago , humans began to mold nature to their needs and agriculture emerged in multiple places around the planet . we believe that it emerged independently and spread from places as varied as mesopotamia , china , south america and sub-saharan africa . as we explore mo... | were there empires at this time in south america and africa ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | we do , however , have several theories—can you think of more ? end of a glacial period : the last glacial period ended 10,000 to 15,000 years ago . this seems to coincide with the emergence of agriculture . | how does scientist know that their were about 10 million people 10,000-15,000 years ago ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | historians estimate the world population was around six to ten million 10,000 years ago . the birth of agriculture about 10,000 to 15,000 years ago , humans began to mold nature to their needs and agriculture emerged in multiple places around the planet . we believe that it emerged independently and spread from places ... | why was agriculture a better idea than a hunter-gatherer lifestyle for humans ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | not everyone needed to be focused on food production , which led to specialization of labor and complex societies . the world before agriculture based on current archeological evidence , anatomically modern humans have existed roughly 200,000-300,000 years . however , before roughly 15,000-20,000 years ago , we have no... | was is it possible that humans had invented agriculture earlier , but the practice of it just lost over the years and due to the ice age ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | this theory is bolstered by the fact that the dawn of agriculture seems to coincide with humans being able to make the more sophisticated stone objects which define the neolithic period . pastoralism : a branch of agriculture a branch of agriculture—called pastoralism—began around the same time as cultivation of plants... | have dogs been domesticated along with pastoralism or settlements relying on agriculture ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | are there any societies in the planet today that still practice this type of agriculture and if so can you provide some detailed examples ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | what do you think ? what do you think is the most compelling theory about the birth of agriculture ? what are the advantages and disadvantages of hunting and foraging versus agriculture ? | is this the era where they learn how to make clay pots and utensils like the shovel in the image below `` the birth of agriculture '' ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | in roughly 10,000 to 15,000 years , advances in agriculture have allowed the human population to become roughly 1000 times larger ! agriculture also has had environmental impacts . farmers used complex tools to cultivate and irrigate their fields and to build settlements . | why is agriculture important to people in 1700 's ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | farmers used complex tools to cultivate and irrigate their fields and to build settlements . to expand their amount of usable land , agriculturalists cleared forests using the slash and burn technique ; they would remove a ring of bark from the trees , drying out the trees and allowing them to burn more quickly . the a... | so the slash and burn involves removing a ring of bark ; how wide did this ring have to be ? |
overview agriculture likely began during the neolithic era before roughly 9000 bce when polished stone tools were developed and the last ice age ended . historians have several theories about why many societies switched from hunting and foraging to settled agriculture . one of these theories is that a surplus in produc... | increased productivity led to the creation of better buildings , tools , weapons , and also to the rise of governments to oversee this activity and military forces to protect people and resources . many population centers evolved into the first wave of city-states that emerged within a few thousand years of the agricul... | is there any idea abut when the first household furniture was invented ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the attack turned us public opinion in favor of entering the second world war . the united states declared war on japan on december 8 , 1941 . japan ’ s allies , germany and italy , declared war on the united states on december 11 . the united states responded in kind , and therefore entered world war ii . | i think the united states waited almost too long is waiting and delaying fighting in the war the reason we had to fight both germany and japan ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states declared war on japan on december 8 , 1941 . japan ’ s allies , germany and italy , declared war on the united states on december 11 . the united states responded in kind , and therefore entered world war ii . | why did germany declare war on america also ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | what do you think ? what motives did japan have in attacking the us naval base at pearl harbor ? what was the american response to the japanese attack ? | what motives did japan have in attacking the us naval base at pearl harbor ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | on december 8 , president roosevelt addressed a joint session of congress in the capitol , his words broadcast on radio to the nation : “ yesterday , december 7 , 1941—a date which will live in infamy—the united states of america was suddenly and deliberately attacked by naval and air forces of the empire of japan. ” $... | how many people died in the other attacks on the same day ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | what motives did japan have in attacking the us naval base at pearl harbor ? what was the american response to the japanese attack ? do you think the united states would have entered world war ii if the japanese had not bombed pearl harbor ? | why did the japanese even alert them ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states responded in kind , and therefore entered world war ii . the pearl harbor attack the japanese surprise attack on pearl harbor began just before 8 a.m. local time sunday morning , december 7 , 1941 . for over an hour , in two waves , some 350 japanese aircraft—having taken off from six aircraft carrier... | the japanese had a reason to bomb pearl harbor because of the us oil embargo but why do they have to do that ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states was now immersed in a war it would conduct simultaneously in europe and the pacific . motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its... | why did the united states suddenly cut off the oil exports to japan ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states had broken the japanese diplomatic code in project “ magic , ” and general george marshall , having been handed a decoded japanese message on the very day of the attack , had sent word to the us base at pearl harbor prior to the assault to “ be on the alert. ” atmospheric conditions delayed transmissi... | if japan did not bomb pearl harbor , would the us stay neutral until the war is over , or would the us join the war eventually as the war raged on ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states was now immersed in a war it would conduct simultaneously in europe and the pacific . motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its... | how did japan succeed at the sneak attack ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | what do you think ? what motives did japan have in attacking the us naval base at pearl harbor ? what was the american response to the japanese attack ? | what made the message get to the naval base after the attack , was it just the way communications were back then ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | what motives did japan have in attacking the us naval base at pearl harbor ? what was the american response to the japanese attack ? do you think the united states would have entered world war ii if the japanese had not bombed pearl harbor ? | in paragraph 6 , if they knew the japanese were going to attack somewhere , why not defend the major bases ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states was now immersed in a war it would conduct simultaneously in europe and the pacific . motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its... | why did the us cut off oil exports to japan ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its oil , and without us oil supplies its navy would be unable to function . in attacking pearl harbor the ... | why would the japanese want to destroy their largest oil supplier ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its oil , and without us oil supplies its navy would be unable to function . in attacking pearl harbor the ... | especially if america supplied eighty percent of their oil ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | the united states responded in kind , and therefore entered world war ii . the pearl harbor attack the japanese surprise attack on pearl harbor began just before 8 a.m. local time sunday morning , december 7 , 1941 . for over an hour , in two waves , some 350 japanese aircraft—having taken off from six aircraft carrier... | did the japanese try any other plans or strategies to get their `` main oil importer '' to do business with them again , prior to resorting to the bombing of pearl harbor ? |
overview on the morning of december 7 , 1941 , japan attacked the us naval base at pearl harbor , hawaii . the surprise attack by some 350 japanese aircraft sunk or badly damaged eighteen us naval vessels , including eight battleships , destroyed or damaged 300 us aircraft , and killed 2,403 men . across the nation , a... | motive for the attack the japanese government decided to attack pearl harbor after the united states cut off us oil exports to japan in the summer of 1941 . japan relied on the united states for eighty percent of its oil , and without us oil supplies its navy would be unable to function . in attacking pearl harbor the ... | given that `` japan relied on the united states for eighty percent of its oil '' i would imagine that there were several other contingency plans to recover such a valuable import relationship for such a valuable resource ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so we must dig into the pvector object and pull out the x and y components using object-oriented dot notation instead : ellipse ( location.x , location.y , 16 , 16 ) ; the same issue arises when testing if the circle has reached the edge of the window , and we need to access the individual components of both vector... | when was location.x and location.y defined ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so this is where we begin our story . now , the word vector can mean a lot of different things . vector is the name of a new wave rock band formed in sacramento , ca in the early 1980s . | is n't the word 'location ' a reserved word ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | however , it ’ s easier to start with just two . programming with pvector one way to think of a vector is the difference between two points . consider how you might go about providing instructions to walk from one point to another . | why is pvector called pvector and not vector ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | let ’ s examine the underlying data for both location and velocity . in the bouncing ball example , we had the following : | location | velocity | |-|-| | x and y | xspeed and yspeed | notice how we are storing the same data for both—two floating point numbers , an x and a y . if we were to write a vector class ourselv... | what are floating point numbers ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | while all these definitions are interesting , they ’ re not what we ’ re looking for . what we want is called a euclidean vector ( named for the greek mathematician euclid and also known as a geometric vector ) . when you see the term “ vector ” in this course , you can assume it refers to a euclidean vector , defined ... | why is vector constructor function here defined using the new keyword ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | wouldn ’ t it be nice if we could simplify our code and use fewer variables ? instead of : var x = 5 ; var y = 10 ; var xspeed ; var yspeed ; we could simply have two variables , where each variable is a vector-like object with two dimensions of information : var location ; var speed ; taking this first step in using v... | it has been given as : var vector=new function ( x , y ) { var x=this.x ; var y=this.y } ; is `` new '' not only used to make new instances of an object ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so we must dig into the pvector object and pull out the x and y components using object-oriented dot notation instead : ellipse ( location.x , location.y , 16 , 16 ) ; the same issue arises when testing if the circle has reached the edge of the window , and we need to access the individual components of both vector... | if ( ( position.x > width ) || ( position.x < 0 ) ) { velocity.x = velocity.x * -1 ; } then velocity.x will be -2 also , when if ( ( position.y > height ) || ( position.y < 0 ) ) { velocity.y = velocity.y * -1 ; } then velocity.y will be -5 the velocity would be negative ... and then position.add ( velocity ) ; would a... |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | however , it ’ s easier to start with just two . programming with pvector one way to think of a vector is the difference between two points . consider how you might go about providing instructions to walk from one point to another . | what does the p stand for in pvector ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | however , it ’ s easier to start with just two . programming with pvector one way to think of a vector is the difference between two points . consider how you might go about providing instructions to walk from one point to another . | does anyone know what pvector stands for ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | however , it ’ s easier to start with just two . programming with pvector one way to think of a vector is the difference between two points . consider how you might go about providing instructions to walk from one point to another . | is there any way to change it from a 90 degree angle bounce to a smaller angled bounce ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | is it a vector too ? technically , one might argue that location is not a vector , since it ’ s not describing how to move from one point to another—it ’ s simply describing a singular point in space . nevertheless , another way to describe a location is the path taken from the origin to reach that location . | how can i use two different pvectors to define the start point and the target point and make the object move to the target point ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so this is where we begin our story . now , the word vector can mean a lot of different things . vector is the name of a new wave rock band formed in sacramento , ca in the early 1980s . | what does the term pvector mean ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | however , it ’ s easier to start with just two . programming with pvector one way to think of a vector is the difference between two points . consider how you might go about providing instructions to walk from one point to another . | or in other words , what does the p in pvector represent ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | in the above illustration , the vector is drawn as an arrow from point a to point b and serves as an instruction for how to travel from a to b . why use vectors ? before we dive into more of the details about vectors , let ’ s look at a basic program that demonstrates why we should care about vectors in the first place... | can i use js 's new spread operator ( ... ) in processing ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | let ’ s write a method called add ( ) that takes another pvector object as its argument , and simply adds the x and y components together . `` ` var vector = function ( x , y ) { this.x = x ; this.y = y ; } ; vector.prototype.add = function ( v ) { this.y = this.y + v.y ; this.x = this.x + v.x ; } ; `` ` now that we se... | vector.prototype.add = function ( v ) { this.y = this.y + v.y ; this.x = this.x + v.x ; } ; is this whole example just to show us what is pvector ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | in the bouncing ball example , we had the following : | location | velocity | |-|-| | x and y | xspeed and yspeed | notice how we are storing the same data for both—two floating point numbers , an x and a y . if we were to write a vector class ourselves , we ’ d start with something rather basic : var vector = function... | if it is , why is var vector = new function ( x , y ) { } is used rather than var pvector = new function ( x , y ) { } because in the programming pvector is used , and not vector ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | in the above illustration , the vector is drawn as an arrow from point a to point b and serves as an instruction for how to travel from a to b . why use vectors ? before we dive into more of the details about vectors , let ’ s look at a basic program that demonstrates why we should care about vectors in the first place... | what is the difference between vectors and pvectors ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so this is where we begin our story . now , the word vector can mean a lot of different things . vector is the name of a new wave rock band formed in sacramento , ca in the early 1980s . | what does reserved word mean ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and this is only a two-dimensional world . in a 3d world , we ’ ll need x , y , z , xspeed , yspeed , zspeed , and so on . wouldn ’ t it be nice if we could simplify our code and use fewer variables ? | would the third parameter/seed be the z ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | in the above illustration , the vector is drawn as an arrow from point a to point b and serves as an instruction for how to travel from a to b . why use vectors ? before we dive into more of the details about vectors , let ’ s look at a basic program that demonstrates why we should care about vectors in the first place... | judging by the figures and examples they provide , why use vectors when this can be covered by the pythagorean theorem ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | | | ( 3 , 4 ) | walk three steps east ; turn and walk four steps north . | | ( 2 , -1 ) | walk two steps east ; turn and walk one step south . | you ’ ve probably done this before when programming motion . | ( a^2 + b^2 = c^2 ) so to find c , instead of using vector , why not just factor in a^2 and b^2 then square root the answer ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so this is where we begin our story . now , the word vector can mean a lot of different things . vector is the name of a new wave rock band formed in sacramento , ca in the early 1980s . | what does thsi mean in the oh noes ? |
this course is all about looking at the world around us and coming up with clever ways to simulate that world with code . we will start by looking at basic physics—how an apple falls from a tree , how a pendulum swings in the air , how the earth revolves around the sun , etc . everything that we 'll discuss here requir... | and so this is where we begin our story . now , the word vector can mean a lot of different things . vector is the name of a new wave rock band formed in sacramento , ca in the early 1980s . | what does it mean when it tells you that `` location '' is a `` reserved '' word ? |
what is archaeology ? archaeology is the study of the material remains of humanity ’ s past . excavated materials , along with other historical objects and text records , form the primary source material on ancient china . when did archaeology begin in china ? all the major dynasties , beginning with the han dynasty ( ... | photography , and more recently satellite-based imaging systems support documentation and mapping procedures . surveying for sites is assisted by the use of core samples and remote sensing . dating has been advanced by the use of radio-carbon and thermoluminescense.modern archaeology is often carried out by teams of ex... | could someone help explain or go more in depth on the more modern archaeological methods mentioned in the final paragraph such as `` core samples , remote sensing , radio carbon , and thermoluminescence '' ? |
what is archaeology ? archaeology is the study of the material remains of humanity ’ s past . excavated materials , along with other historical objects and text records , form the primary source material on ancient china . when did archaeology begin in china ? all the major dynasties , beginning with the han dynasty ( ... | kept historical records , documenting everything up until that time . these official histories were the primary source for chinese history until a century ago . during the song dynasty ( 960 c.e.–1279 c.e . | analysis is primary & secondary right ? |
what is archaeology ? archaeology is the study of the material remains of humanity ’ s past . excavated materials , along with other historical objects and text records , form the primary source material on ancient china . when did archaeology begin in china ? all the major dynasties , beginning with the han dynasty ( ... | during his tenure , archaeologists began to interpret finds on the basis of type ( building a chronological sequence on the basis of changes in the physical features of what one finds ) . work was primarily concentrated on the yellow river area , and interpretation followed themarxist view of history . recent chinese a... | regarding , `` interpretation followed the marxist view of history '' , what parts of the marxist view were applied to the findings ? |
what is this object ? where does it come from ? cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corn... | others have suggested they were ritually burned as part of the burial process . burning or heating might account for the lighter color of some jade cong . | what kind of jade is the cong in this article 's image made from ? |
what is this object ? where does it come from ? cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corn... | others have suggested they were ritually burned as part of the burial process . burning or heating might account for the lighter color of some jade cong . | would `` ... burning or heating ... '' hard stone such as jade really `` soften '' the stone and make it easier to incise the lines into the stone ? |
what is this object ? where does it come from ? cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corn... | while it is unclear what their function is , cong are found in the tombs of people who must have held some important position or rank within the society . cong often carry minutely incised decorations showing mask-like faces . in this case , there is a small face on the corner of the cong , made up of two round eyes an... | is there a reason for faces to be carved in the cong ? |
what is this object ? where does it come from ? cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corn... | cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corners . they appear in short segments ( like this ... | what is the purpose of extended corners for this cong ? |
what is this object ? where does it come from ? cong ( pronounced tsong ) are unusual jade objects found among the graves of the liangzhu culture in the eastern province of jiangsu , around lake tai , near present-day shanghai . cong are tubeshaped objects consisting of a circular tube shape with protruding square corn... | others have suggested they were ritually burned as part of the burial process . burning or heating might account for the lighter color of some jade cong . | how heavy is cong comparing to jade ? |
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