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overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | before we tell the stories that make up world history , it is useful to ask : where do we begin ? where did our human stories start ? homo sapiens is part of a group called hominids , which were the earliest humanlike creatures . | how did the agricultural revolution start ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | in addition to hunting animals and killing them out of self-defense , humans began to use the earth ’ s resources in new ways when they constructed semi-permanent settlements . humans started shifting from nomadic lifestyles to fixed homes , using the natural resources there . semi-permanent settlements would be the bu... | and more specifically , how did humans discover agriculture ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | these changes , according to the savannah hypothesis , may have caused them to adapt to living on the ground and walking upright instead of climbing . $ ^2 $ hominids continued to evolve and develop unique characteristics . their brain capacities increased , and approximately 2.3 million years ago , a hominid known as ... | did any of the great extinctions impact the hominids ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . | did these early humans wage war upon each other ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | in addition to hunting animals and killing them out of self-defense , humans began to use the earth ’ s resources in new ways when they constructed semi-permanent settlements . humans started shifting from nomadic lifestyles to fixed homes , using the natural resources there . semi-permanent settlements would be the bu... | how did the humans migrate to australia ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | by a million years ago , some hominid species , particularly homo erectus , began to migrate out of africa and into eurasia , where they began to make other advances like controlling fire . $ ^3 $ though there were once many kinds of hominids , only one remains : homo sapiens . extinction is a normal part of evolution ... | at one point it was said that the homo sapiens were the only survives then it said that other homo sapiens were not able to survive , so does that mean that homo erectus , homo neanderthalensis and homo naledi were further branches of homo sapiens ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^6 $ how were our ancestors able to achieve this feat , and why did they make the decision to leave their homes ? the development of language around 50,000 years ago allowed people to make plans , solve problems , and organize effectively . we can ’ t be sure of the exact reasons humans first migrated off of the afri... | some people say that all the continents we 're connected ... is this true ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | humans started shifting from nomadic lifestyles to fixed homes , using the natural resources there . semi-permanent settlements would be the building-blocks of established communities and the development of agricultural practices . $ ^8 $ what do you think ? | and if we were to test our dna that some of us would find neanderthal in our genetic makeup ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^8 $ what do you think ? why do you think homo sapiens is the only surviving human species ? what effects do you think the environment had on human evolution ? | do you think that there could have been other types of humans besides the homo sapiens living on the world at the time ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^8 $ what do you think ? why do you think homo sapiens is the only surviving human species ? what effects do you think the environment had on human evolution ? | what were the major differences between homo sapiens and the other `` homo '' s , or relatives ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^6 $ how were our ancestors able to achieve this feat , and why did they make the decision to leave their homes ? the development of language around 50,000 years ago allowed people to make plans , solve problems , and organize effectively . we can ’ t be sure of the exact reasons humans first migrated off of the afri... | is it plausible to say that the people who walked across the bering strait might of followed the ocean coast out of curiosity to see the end or was it some kind of ancient spiritual movement ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | for instance , they reached the australian continent in canoes sometime between 35,000 and 65,000 years ago . scientists studying land masses and climate know that the pleistocene ice age created a land bridge that connected asia and north america ( alaska ) over 13,000 years ago . a widely accepted migration theory is... | did the sapiens that crossed the land bridge soon formed to be native american ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^8 $ what do you think ? why do you think homo sapiens is the only surviving human species ? what effects do you think the environment had on human evolution ? | why are homo sapiens the only ones left ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . | and one more ... do we have any ideas about what humans evolved from ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^8 $ what do you think ? why do you think homo sapiens is the only surviving human species ? what effects do you think the environment had on human evolution ? | where did the homo sapiens come from ? |
overview homo sapiens , the first modern humans , evolved from their early hominid predecessors about 250,000 years ago . they developed a capacity for language about 50,000 years ago . the first modern humans began moving outside of africa starting about 70,000-100,000 years ago . humans are the only known species to ... | $ ^8 $ what do you think ? why do you think homo sapiens is the only surviving human species ? what effects do you think the environment had on human evolution ? | how were the homo sapiens created ? |
key points a phillips curve shows the tradeoff between unemployment and inflation in an economy . keynesian macroeconomics argues that the solution to a recession is expansionary fiscal policy that shifts the aggregate demand curve to the right . the other side of keynesian policy occurs when the economy is operating a... | review questions what tradeoff is shown by a phillips curve ? would you expect to see long-run data trace out a stable downward-sloping phillips curve ? what is the keynesian prescription for recession ? | but is the long run keynesian phillips curve vertical , or downward sloping ? |
venice in the fourteenth century today , we think of italy as a unified country . but in the fourteenth century , the major urban centers of italy were largely unstable . wars were common . rivaling families sought to oust their opponents—often by violent means—and seize power for themselves . this is why so much civic... | the openwork ( lattice-like carving ) and arcades of the bottom two levels combine islamic and gothic influences . pointed arches and quatrefoils were typical features on gothic buildings , but the pointed arches bow out beneath their peaks , in the manner of islamic horseshoe arches . we also see tripartite lobes with... | what does it means in the last paragraph : `` the pointed arches bow out beneath their peaks '' ? |
venice in the fourteenth century today , we think of italy as a unified country . but in the fourteenth century , the major urban centers of italy were largely unstable . wars were common . rivaling families sought to oust their opponents—often by violent means—and seize power for themselves . this is why so much civic... | like the lower loggia , the balcony features pointed arches , though here with the addition of delicate quatrefoils ( four-lobed cutouts ) just above them . a stone wall completely encloses the third and uppermost level of the façade and is punctuated by a row of large , pointed windows . in many respects—especially in... | why are the `` large pointed windows '' on the right not aligned with the others ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | but that 's not how newton 's laws work . if there was only a downward force of gravity on the dog food , the dog food would have to accelerate downward . the table must do more than `` get in the way '' . | hi , when i solved for example one , i used a as -9.8 m/s2 , because is n't acceleration from gravity always downward and in this case to the opposite of upward ( considered positive ) direction , thus should be negative ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the heavier the weight , the greater the deformation , the greater the restoring force trying to bring the surface back to its natural shape . this deformation would be noticeable if the load were placed on a card table , but even rigid objects deform when a force is applied to them . unless the object is deformed beyo... | it is said that even rigid object would be deformed during contact , does that mean all objects are naturally elastic ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | to find the normal force we typically use the fact that we know something about the acceleration perpendicular to the surfaces ( since we assume the surfaces ca n't pass through each other ) . therefore , we almost always use newton 's second law to solve for normal force by using this strategy . draw a force diagram s... | in the second example with the cookie box , could someone explain why you use sine for calculating the acceleration of y ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | edit : after going over the problem again , is it because we can ignore the horizontal force because the normal force in this question only applies to vertical forces , therefore making f sub a of x irrelevant ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | after going over the problem again , is it because we can ignore the horizontal force because the normal force in this question only applies to vertical forces , therefore making f sub a of x irrelevant ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | is n't the normal force same as the reaction force in newton 's 3rd law of motion ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | another question i had was if the normal force was greater than that of the force of gravity then would n't the object be floating in the air ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | first we draw a force diagram showing all forces on the package ( we do n't include acceleration in the diagram since acceleration is not a force . also , we do n't include an extra elevator force since the normal force is the force exerted on the box by the elevator ) . $ a_y=\dfrac { \sigma f_y } { m } \quad \text { ... | when calculating mg , why do n't we use 9.8 ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | surfaces can also exert contact forces in the direction parallel to the surfaces , but we would typically call those forces frictional forces ( since they work to prevent the surfaces from sliding across each other ) instead of calling them normal forces . how do inanimate surfaces `` know '' to exert a normal force ? ... | how do inanimate surfaces `` know '' to exert a normal force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | therefore , we almost always use newton 's second law to solve for normal force by using this strategy . draw a force diagram showing all forces acting on the object in question . choose the direction for newton 's second law in the same direction as the normal force ( i.e . | is the gravity same as the weight of the object , so the gravity pushes down the weight of the object on the object ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | and the normal force is the same as the force of gravity ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | can flying objects have a normal force because they are in contact with the air particles ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . for example , the surfaces of a table and a box can not exert normal forces on each other if they are not in contact . | at bottom of the whole article on the last step in example two , how did you get 14.8 n when you calculated ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the table must do more than `` get in the way '' . the table must exert an upward force to prevent the dog food from falling through the table . strangely , if a heavier object is placed on a table , the table must exert more normal force to prevent the weight from passing through the table . how does the table know to... | for example : we carry box with 5m/s velocity and put it on table with 0m/s final velocity ( in relation to table ) , for first second acceleration will be -5m/s2 , for first five second it will be -1m/s2 , for -10second 0.5 and so on never reaching zero ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | what is normal force ? ever turn too quick and walk straight into a wall ? | where did the 10n ( sin30 ) term come from and why is it negative ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | therefore , we almost always use newton 's second law to solve for normal force by using this strategy . draw a force diagram showing all forces acting on the object in question . choose the direction for newton 's second law in the same direction as the normal force ( i.e . | why did n't we draw the forces directed into the dot ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | how do we figure out the normal force of a box that is being lifted off of a table ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | so what is the difference between normal force and newton 's 3rd law ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | in example 2 , can we get the same result using the x-component of fa ( the force exerted by the person ) to solve for the normal force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | is the normal force newton 's third law action reaction pair ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | how the normal force is different from newtons third law ( every action have an equal & opposite reaction ) ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | what is the cause of the table exerting normal force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . for ex... | if normal force is always existent to prevent two objects from moving through each other , how does an object like an awl puncture anything ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | should n't the object being punctured push the awl back with a normal force equal to the force being applied , which would result in nothing happening ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | what is the normal force on the package exerted by the floor of the elevator ? first we draw a force diagram showing all forces on the package ( we do n't include acceleration in the diagram since acceleration is not a force . also , we do n't include an extra elevator force since the normal force is the force exerted ... | hey in the diagram , how did we know that the angle was 30 degrees with the positive x axis ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | if there 's always an equal and opposite normal force acting on an object in contact with another , why does the table sag ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | if newton 's third law of motion states that the reaction force will be instantaneous , then how come normal force ( a reaction force itself ) has to go through all the trouble of reforming to eventually balance the opposing force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | what if we take into account air resistance , will there be a normal force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | in figure 2 , does the arrow pointing down represent mg or normal force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | to find the normal force we typically use the fact that we know something about the acceleration perpendicular to the surfaces ( since we assume the surfaces ca n't pass through each other ) . therefore , we almost always use newton 's second law to solve for normal force by using this strategy . draw a force diagram s... | in the second example with the cookie box , could someone explain why you use sine for calculating the acceleration of y ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force here is different from $ mg $ since there was a vertical acceleration and an additional vertical force . example 2 : normal force with diagonal force a person is pushing a $ 1.0 \text { kg } $ box of mint chocolate chip cookies across a frictionless table with a downward diagonal force $ f_a=10\text { ... | in example 2 , why is n't fg negative ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the delivery person is also resting one foot on the package exerting a downward force on the package of magnitude $ 5\text { n } $ . what is the normal force on the package exerted by the floor of the elevator ? first we draw a force diagram showing all forces on the package ( we do n't include acceleration in the diag... | heading ; what is the normal force on the package exerted by the floor of the elevator ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | first we draw a force diagram showing all forces on the package ( we do n't include acceleration in the diagram since acceleration is not a force . also , we do n't include an extra elevator force since the normal force is the force exerted on the box by the elevator ) . $ a_y=\dfrac { \sigma f_y } { m } \quad \text { ... | i ca n't understand the explonation why we do n't take into account the elevator 's force ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | if a ball is dropped on ground with no initial velocity and under gravity only then what will be the force with which it hits the ground ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | let 's apply this strategy to the following simple example . consider the simple case of a box of mass $ m $ that 's sitting on a table at rest , as seen below . following the procedure we get , $ a_y=\dfrac { \sigma f_y } { m } \quad\text { ( use newton 's second law for the vertical direction , since } f_n\text { is ... | if applicable why , consider ball is elastic in first case and inelastic in second case ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | a force of 10n is applied on a body of weight 10n .if g=10ms-2 then acceleration produced in the body is 10ms-2 how ? |
what is normal force ? ever turn too quick and walk straight into a wall ? i have . it hurts and makes me feel dumb . we can blame the normal force for the pain we feel when running into solid objects . the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal f... | the normal force is the force that surfaces exert to prevent solid objects from passing through each other . normal force is a contact force . if two surfaces are not in contact , they ca n't exert a normal force on each other . | how does the normal reaction is directly proportional to the a tual area of contact ? |
what is acceleration ? imagine you are playing golf , and you ’ ve just set up the golf ball on the tee . you test your grip , take a few practice swings , and peer into the distance at the flag pole marking the first hole for the course . your wise golf ball guru ( who happens to also teach physics ) tells you to “ be... | that sudden increase in how quickly you stop ? that is jerk . so there ’ s change in velocity over time , which is acceleration , and change in acceleration over time , and that is called jerk . | so ... '' jerk '' is like in a manual shifting car after you shift to higher gear it moves back and then jumps forward quickly ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | is a bilongo the hole where they put the medicine or the medicine itself ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | nonetheless , minkisi have left an indelible imprint as visually provocative figures of spiritual importance and protection . essay by dr. shawnya harris additional resources : this figure at the detroit institute of arts the sculpture at the metropolitan museum of art nkisi nkondi on art through time nkisi nkondi on t... | how tall ( in feet ) is this art piece ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | in other instances minkisi can be represented as small bundles , shells , and carved wooden figures . minkisi represent the ability to both ‘ contain ’ and ‘ release ’ spiritual forces which can have both positive and negative consequences on the community . nkisi nkondi a fascinating example of a nkisi can be found in... | do nkisi nkondi represent a way of seeing divine justice occurring in this world rather than the next ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | insertions nkisi nkondi figures are highly recognizable through an accumulation of pegs , blades , nails or other sharp objects inserted into its surface . medicinal combinations called bilongo are sometimes stored in the head of the figure but frequently in the belly of the figure which is shielded by a piece of glass... | is there a meaning to their scales and size and what type of medical was put in the belly of the shell ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . | what is the style or period of the nksi n'tondi ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . a nkisi ( plural : minkisi ) is loosely translated as a `` spirit '' yet it is represented as a container of sacred substances which are ac... | how would they be able to tell the statue was activated by the supernatural forces in the physical world ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | did the kongo people treat their animals as well as the people there ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | the glass represents the ‘ other world ’ inhabited by the spirits of the dead who can peer through and see potential enemies . elements with a variety of purposes are contained within the bilongo . seeds may be inserted to tell a spirit to replicate itself ; mpemba or white soil deposits found near cemeteries represent... | what did the bilongo medicine consist of ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | a nkisi ( plural : minkisi ) is loosely translated as a `` spirit '' yet it is represented as a container of sacred substances which are activated by supernatural forces that can be summoned into the physical world . visually , these minkisi can be as simple as pottery or vessels containing medicinal herbs and other el... | what kind of herbs do they usually put in the stomach part ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | nonetheless , minkisi have left an indelible imprint as visually provocative figures of spiritual importance and protection . essay by dr. shawnya harris additional resources : this figure at the detroit institute of arts the sculpture at the metropolitan museum of art nkisi nkondi on art through time nkisi nkondi on t... | what would be the content of this sculpture ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . | does all statues that were created have the same features ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | minkisi represent the ability to both ‘ contain ’ and ‘ release ’ spiritual forces which can have both positive and negative consequences on the community . nkisi nkondi a fascinating example of a nkisi can be found in a power figure called nkisi nkondi ( a power figure is a magical charm seemingly carved in the likene... | what is the main role of the nkisi when it comes to those who make a sort of oath upon it or a promise to the other who owns it ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | minkisi represent the ability to both ‘ contain ’ and ‘ release ’ spiritual forces which can have both positive and negative consequences on the community . nkisi nkondi a fascinating example of a nkisi can be found in a power figure called nkisi nkondi ( a power figure is a magical charm seemingly carved in the likene... | what will the nkisi nkondi do to that individual who breaks the promise/oath or not ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | insertions nkisi nkondi figures are highly recognizable through an accumulation of pegs , blades , nails or other sharp objects inserted into its surface . medicinal combinations called bilongo are sometimes stored in the head of the figure but frequently in the belly of the figure which is shielded by a piece of glass... | what were in the medicinal combinations ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | nonetheless , minkisi have left an indelible imprint as visually provocative figures of spiritual importance and protection . essay by dr. shawnya harris additional resources : this figure at the detroit institute of arts the sculpture at the metropolitan museum of art nkisi nkondi on art through time nkisi nkondi on t... | why did thay make this sculpture ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | these minkisi are wooden figures representing a human or animal such as a dog ( nkisi kozo ) carved under the divine authority and in consultation with an nganga or spiritual specialist who activates these figures through chants , prayers and the preparation of sacred substances which are aimed at ‘ curing ’ physical ,... | does the location of the sharp objects have a meaning ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | migrations europeans may have encountered these objects during expeditions to the congo as early as the 15th century . however , several of these “ fetish ” objects , as they were often termed , were confiscated by missionaries in the late 19th century and were destroyed as evidence of sorcery or heathenism . neverthel... | did missionaries go into the tribes and just take their relics ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | visually , these minkisi can be as simple as pottery or vessels containing medicinal herbs and other elements determined to be beneficial in curing physical illness or alleviating social ills . in other instances minkisi can be represented as small bundles , shells , and carved wooden figures . minkisi represent the ab... | who made these wooden figures ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . | what is it made of ? |
divine protection sacred medicines and divine protection are central to the belief of the kongo peoples ( democratic republic of congo ) . the kongo believe that the great god , ne kongo , brought the first sacred medicine ( or nkisi ) down from heaven in an earthenware vessel set upon three stones or termite mounds . ... | visually , these minkisi can be as simple as pottery or vessels containing medicinal herbs and other elements determined to be beneficial in curing physical illness or alleviating social ills . in other instances minkisi can be represented as small bundles , shells , and carved wooden figures . minkisi represent the ab... | why ere other people so superstitious about these wooden figures ? |
hi , i 'm syud momtaz ahmed ! what do you work on ? i currently work as a senior scientist at 3m . my role focuses on developing new products and technologies that impact the safety and graphics business . examples of some of the products we work on include personal protection products ; traffic safety and security pro... | i completed my bachelor ’ s degree in chemistry and mathematics at wabash college in indiana , and went on to do a ph.d. in chemistry at cornell university in ithaca , ny . once i was done with school , i realized i wanted to use what i learned to make things that had real world applications , which is primarily why i ... | do you feel that your move of getting a phd then going into industry is a rare move to make ? |
hi , i 'm syud momtaz ahmed ! what do you work on ? i currently work as a senior scientist at 3m . my role focuses on developing new products and technologies that impact the safety and graphics business . examples of some of the products we work on include personal protection products ; traffic safety and security pro... | hi , i 'm syud momtaz ahmed ! what do you work on ? | what is vitamins and its types ? |
hi , i 'm syud momtaz ahmed ! what do you work on ? i currently work as a senior scientist at 3m . my role focuses on developing new products and technologies that impact the safety and graphics business . examples of some of the products we work on include personal protection products ; traffic safety and security pro... | the fact that i could put together different pieces and have it shape into something i had envisioned was not only fascinating , but also invigorating . it was during my first organic chemistry class in college that i started making connections between chemistry and my love for legos - through chemistry , i realized i ... | what is language of chemistry ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | in some cases , the cue is largely external : in hibernation , an animal goes into a den or burrow , reduces its metabolic rate , and enters a state of inactivity during the winter , conserving resources while conditions are harsh and food is scarce . environmental cues often trigger hibernation behavior . for instance... | do humans exhibit any signs of hibernation , estivation , or migration in response to cues ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | a beach mouse burrow has a specific shape with a long escape tunnel that is different from the burrows of closely related mouse species . a young beach mouse is raised in captivity , without any access to dirt or sand or any chance to observe burrowing adults . when given access to dirt , it immediately digs a burrow w... | hello , thanks for the very nice course , i wanted to know , do zebra finches sing if they are raised in captivity without any other bird of their specy arround ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | in this article , we ’ ll take a closer look at animal behavior—how it ’ s studied , how it evolves , and how it can run the gamut from hardwired to learned . what is behavior ? broadly speaking , animal behavior includes all the ways animals interact with other members of their species , with organisms of other specie... | so can a learned behavior become an innate behavior over time passed down through each generation ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | as you may have discovered if you 've ever taken a long flight , your body 's alarm clock will still `` go off '' at the same time even if the external cues change , which is what causes jet lag ! it 's also common for behaviors to be triggered by a combination of internal and external cues interacting . for instance ,... | migration can also be an internal behaviour ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | some desert animals estivate in response to dry conditions . this shift helps them survive the harshest months of the year. $ ^3 $ the snails in the photo below climb to the tops of fence posts to estivate . migration is a behavior in which animals move from one location to another in a seasonal pattern . | why do the snails climb to the top of the fence ? |
key points animal behavior includes all the ways animals interact with other organisms and the physical environment . behavior can also be defined as a change in the activity of an organism in response to a stimulus , an external or internal cue or combo of cues . to fully understand a behavior , we want to know what c... | if you 've noticed any of these things , congratulations—you 've made your first observations in behavioral biology ! these are all examples of animal behaviors . yep , you and i count as animals too . | is animal behaviour and human behaviour the same ? |
overview for many middle-class americans , the 1920s was a decade of unprecedented prosperity . rising earnings generated more disposable income for the purchase of consumer goods . henry ford ’ s advances in assembly-line efficiency created a truly affordable automobile , making car ownership a possibility for many am... | what were the benefits and drawbacks of buying on credit ? do you think the new `` labor-saving '' devices actually saved women any time spent on household labor ? | do you think the new `` labor-saving '' devices actually saved women any time spent on household labor ? |
overview for many middle-class americans , the 1920s was a decade of unprecedented prosperity . rising earnings generated more disposable income for the purchase of consumer goods . henry ford ’ s advances in assembly-line efficiency created a truly affordable automobile , making car ownership a possibility for many am... | ford ’ s focus on cheap mass production brought both benefits and disadvantages to his workers . ford would not allow his workers to unionize , and the boring , repetitive nature of the assembly line work generated a high turnover rate . on the other hand , ford doubled workers ’ pay to five dollars a day and standardi... | what is a turnover rate ? |
overview for many middle-class americans , the 1920s was a decade of unprecedented prosperity . rising earnings generated more disposable income for the purchase of consumer goods . henry ford ’ s advances in assembly-line efficiency created a truly affordable automobile , making car ownership a possibility for many am... | overview for many middle-class americans , the 1920s was a decade of unprecedented prosperity . rising earnings generated more disposable income for the purchase of consumer goods . henry ford ’ s advances in assembly-line efficiency created a truly affordable automobile , making car ownership a possibility for many am... | why were middle class american 's earnings rising ? |
overview for many middle-class americans , the 1920s was a decade of unprecedented prosperity . rising earnings generated more disposable income for the purchase of consumer goods . henry ford ’ s advances in assembly-line efficiency created a truly affordable automobile , making car ownership a possibility for many am... | what do you think ? would you have wanted to work at henry ford 's factory , manufacturing model ts ? why or why not ? | why would some one what to join a strict owner of the factory and always get his money back ? |
a palindrome is a word that is spelled the same forward and backward . for example , rotor and redder are palindromes , but motor is not . how can you use recursion to determine whether a word is a palindrome ? let 's start by understanding what 's a base case . consider the word a . it 's a palindrome . in fact , we d... | a palindrome is a word that is spelled the same forward and backward . for example , rotor and redder are palindromes , but motor is not . | could somebody please explain how the slice command works ? |
a palindrome is a word that is spelled the same forward and backward . for example , rotor and redder are palindromes , but motor is not . how can you use recursion to determine whether a word is a palindrome ? let 's start by understanding what 's a base case . consider the word a . it 's a palindrome . in fact , we d... | consider the word a . it 's a palindrome . in fact , we do n't have to think of palindromes as actual words in the english language ( or whatever language you 'd like to consider ) . | how can no words or no letters be a palindrome ? |
a palindrome is a word that is spelled the same forward and backward . for example , rotor and redder are palindromes , but motor is not . how can you use recursion to determine whether a word is a palindrome ? let 's start by understanding what 's a base case . consider the word a . it 's a palindrome . in fact , we d... | now , a string can contain no letters ; we call a string of zero letters an empty string . an empty string is also a palindrome , since it `` reads '' the same forward and backward . so now let 's say that any string containing at most one letter is a palindrome . | is n't 'anddna ' also a palindrome ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | luckily , there 's a direct relationship among these values : a $ 1\ % $ recombination frequency is equivalent to $ 1 $ centimorgan or $ 1 $ map unit . is map distance always the same as recombination frequency ? sometimes , the directly measured recombination frequency between two genes is not the most accurate measur... | is 50 % always the highest recombination frequency or could it theoretically be exceeded if a small enough population of flies were used ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | specifically , the pair of genes with the largest recombination frequency must flank the third gene : by doing this type of analysis with more and more genes ( e.g. , adding in genes d , e , and f and figuring out their relationships to a , b , and c ) we can build up linkage maps of entire chromosomes . in linkage map... | what percentage or map units is considered close ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | specifically , the pair of genes with the largest recombination frequency must flank the third gene : by doing this type of analysis with more and more genes ( e.g. , adding in genes d , e , and f and figuring out their relationships to a , b , and c ) we can build up linkage maps of entire chromosomes . in linkage map... | is anything lesser than 50 map units considered close ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | that is , the alleles of the genes that are already together on a chromosome will tend to be passed as a unit to gametes . in this case , the genes are linked . for example , two linked genes might behave like this : now , we see gamete types that are present in very unequal proportions . | how can you create a tester to test if the trait is sex-linked ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | below , we can see a modified punnett square showing the results of the cross between our double heterozygous fly and the tester fly . four different types of eggs are produced by a double heterozygous female fly , each of which combines with a sperm from the male tester fly . four different phenotypic ( appearance-bas... | white eyed fruit fly could only be produced as a male , would n't it be impossible to breed a tester ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | recombination frequency and linkage maps what is the benefit of calculating recombination frequency ? one way that recombination frequencies have been used historically is to build linkage maps , chromosomal maps based on recombination frequencies . in fact , studying linkage helped early geneticists establish that chr... | how would the recombination frequencies calculations differ if it were three different genes , instead of two , and you were to find the recombination frequencies between all the genes ? |
key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | key points : when genes are found on different chromosomes or far apart on the same chromosome , they assort independently and are said to be unlinked . when genes are close together on the same chromosome , they are said to be linked . that means the alleles , or gene versions , already together on one chromosome will... | how do we know if alleles are on the same chromosome ? |
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