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what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics . this makes physics exciting and interesting , but it also forces attempts at defining physics into generalizations about what physics has been rather t...
atoms are `` un-cuttable '' say if you have electron like electricity is made up of that right ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what is the nature of fire ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
then in electricity and magnetism we 'll learn about two new forces—the electric force and the magnetic force . in circuits we 'll see how electric forces cause current to flow . in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect .
is that the excitation and de-excitation of the electrons of the atmosphere ( air particles ) where we see the orange coloured fire ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what is the smallest particle there is ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
can physics prove that there is a god ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
is there a particle with less mass than a neutrino or quark ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers .
how do atoms make up everything isnt there a sequence to follow to understand ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect . once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few .
when do we learn how atoms react when heated or smashed together ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
these patterns and correlations are expressed using words , equations , graphs , charts , diagrams , models , and any other means that allow us to express a relationship in a way that we as humans can better understand and use . image credit : adventures inside the atom , 1948 general electric , george roussos ( public...
if you were to accelerate the molecules of water fast enough , could you possibly break the atom bonds and `` erase '' the water from its original state ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics . this makes physics exciting and interesting , but it also forces attempts at...
as i learnt when we use different theory 's we do n't find answers but more questions and sometimes it proves the theory used before wrong , then my question is if the theory used before is proved wrong by the answer we find using the same theory then how can we say that new theory is right as it say 's that the theory...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
so in physics , what do recommend for a field of study ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
how far into math should i be to take up physics ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics . this makes physics exciting and interesting , but it also forces attempts at defining physics into generalizations about what physics has been rather t...
is there something even smaller than a quark ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
we 'll continue mastering and expanding our ability to deal with motion by showing that conservation laws are an alternative way to explain the motion of an object . these conservation laws give constraints on how the motion of a system can change . conservation of energy will be learned in work and energy , and conser...
in the second paragraph , how dose newtons laws help physicist ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
how is optics a subject of physics ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
does the fermi paradox has to do anything with physics ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
image credit : adventures inside the atom , 1948 general electric , george roussos ( public domain ) ok , so boiling physics down to only two things is admittedly a bit of a gross simplification and glosses over some of the finer points of what physicists do and how they do it . but trying to describe a complex univers...
is everything in the known universe , life ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
if vector is magnitude and direction , and a scalar is only magnitude , then what do you call something that is only direction ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
these conservation laws give constraints on how the motion of a system can change . conservation of energy will be learned in work and energy , and conservation of momentum will be learned in impacts and linear momentum . up to that point we 'll have mostly considered objects that are not changing their rotational moti...
what is a quark and how does it work ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
the effort to find the most fundamental description of the universe is a quest that has historically always been a big part of physics , as can be seen in the comic image below . find relationships between those fundamental measured quantities ( e.g. , newton ’ s laws , conservation of energy , special relativity ) . t...
i know that schrodinger 's cat describes that a fundamental particle such as an electron can be a wave and a particle at the same time , but how does it work ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in physics , we want to explain why objects move around the way they do . however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their m...
can perpetual motion be possible ever ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
and that 's just to name a few . by the end you should have a nice understanding of introductory physics and the mathematical tools physicists use to describe and explain the universe . but no summary can describe all the interesting and powerful aspects of physics .
how did the early physicists knew that there were a universe and that we live in a world that is small to the universe ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
is there something smaller than a quark ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
conservation of energy will be learned in work and energy , and conservation of momentum will be learned in impacts and linear momentum . up to that point we 'll have mostly considered objects that are not changing their rotational motion , so in moments , torque , and angular momentum we 'll learn how to describe and ...
what are considered `` quarks '' ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in circuits we 'll see how electric forces cause current to flow . in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect . once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few .
can a black hole suck even light ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what is the basics of all the physics ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what will i learn by studying physics on khan academy ? in physics , we want to explain why objects move around the way they do . however , it would be hard to explain motion if we did n't know how to describe motion .
explain in detail what is the meaning of scalar quantity ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
for the most part , physicists are trying to do the following : precisely define the most fundamental measurable quantities in the universe ( e.g. , velocity , electric field , kinetic energy ) . the effort to find the most fundamental description of the universe is a quest that has historically always been a big part ...
how did man kind knew about the universe when they never seen it ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
these patterns and correlations are expressed using words , equations , graphs , charts , diagrams , models , and any other means that allow us to express a relationship in a way that we as humans can better understand and use . image credit : adventures inside the atom , 1948 general electric , george roussos ( public...
how do things reflect other things ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics .
when we do n't have any measuring instruments to actually calculate , mass or velocity of these objects - how did we arrive at this information ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
we 'll continue mastering and expanding our ability to deal with motion by showing that conservation laws are an alternative way to explain the motion of an object . these conservation laws give constraints on how the motion of a system can change . conservation of energy will be learned in work and energy , and conser...
could a strong enough amount of pressure change time ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
in the fourth paragraph , can anyone actually give me a generalized , yet solid definition of physics , maybe just the word itself ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in physics , we want to explain why objects move around the way they do . however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their m...
would a magnet be an example of a magnetic field ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few . by the end you should have a nice understanding of introductory physics and the mathematical tools physicists use to describe and explain the universe . but no summary can describe all the interesting...
how did the name physics originate and how are physicists even able to comprehend the fundamentals laws that sharpen our universe withiut questioning the theories that we now use or rely on ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
and that 's just to name a few . by the end you should have a nice understanding of introductory physics and the mathematical tools physicists use to describe and explain the universe . but no summary can describe all the interesting and powerful aspects of physics .
what exactly could understanding the origin of the `` god particle '' tell us about the universe ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
is physics using math mostly ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
so , if it ’ s a definition you want , it ’ s a definition you ’ ll get . for the most part , physicists are trying to do the following : precisely define the most fundamental measurable quantities in the universe ( e.g. , velocity , electric field , kinetic energy ) . the effort to find the most fundamental descriptio...
what is a electric field ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
so maybe trying to describe the complex activity of what physicists do with a simple and clarifying definition isn ’ t such a bad idea after all . what will i learn by studying physics on khan academy ? in physics , we want to explain why objects move around the way they do .
if i were to learn physics , how far would my math knowledge have to be at ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
how did physics created and why ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
we 'll continue mastering and expanding our ability to deal with motion by showing that conservation laws are an alternative way to explain the motion of an object . these conservation laws give constraints on how the motion of a system can change . conservation of energy will be learned in work and energy , and conser...
what is change but the measure of time , what is time but the measure of change ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
image credit : adventures inside the atom , 1948 general electric , george roussos ( public domain ) ok , so boiling physics down to only two things is admittedly a bit of a gross simplification and glosses over some of the finer points of what physicists do and how they do it . but trying to describe a complex univers...
is there a such thing as an alternate universe and or paradime ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
with the ability to precisely describe motion under our belt , we 'll learn in forces and newton 's laws how the concept of force allows us to explain why objects change their motion . we 'll continue mastering and expanding our ability to deal with motion by showing that conservation laws are an alternative way to exp...
what is the biggest object in the world ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics . this makes physics exciting and interesting , but it also forces attempts at defining physics into generalizations about what physics has been rather t...
what is it made of ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
up to that point we 'll have mostly considered objects that are not changing their rotational motion , so in moments , torque , and angular momentum we 'll learn how to describe and explain rotational motion and pick up a new conservation law along the way—conservation of angular momentum . after this point , we 'll de...
the first videio that i watched , the man was saying that something that is physicly there , is only there by the forces , is that true for liquids , gasses , or atoms ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what will i learn by studying physics on khan academy ? in physics , we want to explain why objects move around the way they do . however , it would be hard to explain motion if we did n't know how to describe motion .
what happens when you drop a ball from the top of a building or cliff or any way but in a high plane ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics .
because limits technically do n't exist and infinity is the boundary , there must me something smaller than a quark , right ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few . by the end you should have a nice understanding of introductory physics and the mathematical tools physicists use to describe and explain the universe .
is there any specific name for an organism smaller than a quark ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries .
how do we define time ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect . once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few .
what is the relationship between space and time and how does time get affected at various locations in space ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
the effort to find the most fundamental description of the universe is a quest that has historically always been a big part of physics , as can be seen in the comic image below . find relationships between those fundamental measured quantities ( e.g. , newton ’ s laws , conservation of energy , special relativity ) . t...
what do newton 's laws include ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in physics , we want to explain why objects move around the way they do . however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their m...
( so sometimes when your going fast enough your car you if you drive infront of another car it could flip - of course there would be the chance of another car flipping- but why does that not happen at different speeds ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers .
why do we not feel ourselves in tiny particles which make us up , does when we get hurt we lose tiny bits of mass ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers .
how do you calculate the speed at which something is traveling if that speed is constantly changing ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what if you push a ball down a hill that is 3 feet high ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
where is the conception of gravity ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their motion for some special cases . with the ability to precisely describe moti...
does a star or a black hole come first ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in circuits we 'll see how electric forces cause current to flow . in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect . once we learn about light , we get to learn einstein 's theory of special relativity .
is optics the same as what is used in earth ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
the effort to find the most fundamental description of the universe is a quest that has historically always been a big part of physics , as can be seen in the comic image below . find relationships between those fundamental measured quantities ( e.g. , newton ’ s laws , conservation of energy , special relativity ) . t...
how could you actually find relationships between those fundamental measured quantities ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous theory of physics . this makes physics exciting and interesting , but it also forces attempts at defining physics into generalizations about what physics has been rather t...
what are quarks made of , what are they ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
in optics we 'll investigate the ways in which electromagnetic waves ( i.e. , light ) can bend and reflect . once we learn about light , we get to learn einstein 's theory of special relativity . and that 's just to name a few .
how does the theory of relativity work ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their motion for some special cases . with the ability to precisely describe moti...
how do people randomly pick up all these formulas and key topics out of nothingness ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
however , it would be hard to explain motion if we did n't know how to describe motion . so first , in the topics one-dimensional motion and two-dimensional motion , we 'll learn how to precisely describe the motion of objects and predict their motion for some special cases . with the ability to precisely describe moti...
can i take a competency test to determine which topics i need ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what is the real unit of measure ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
so , if it ’ s a definition you want , it ’ s a definition you ’ ll get . for the most part , physicists are trying to do the following : precisely define the most fundamental measurable quantities in the universe ( e.g. , velocity , electric field , kinetic energy ) . the effort to find the most fundamental descriptio...
when a thing dropped a plane and his a ground , where does all its kinetic energy go ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers .
is it possible that the consideration of simplicity and multiplicity as something binary ( in other words , that one can not be the other ) is a misconception ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
image credit : adventures inside the atom , 1948 general electric , george roussos ( public domain ) ok , so boiling physics down to only two things is admittedly a bit of a gross simplification and glosses over some of the finer points of what physicists do and how they do it . but trying to describe a complex univers...
is it possible that the complex can naturally be what is simple , and the simple naturally be what is complex ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
what 's the difference between a regular vector and non perpendicular vector ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
does phsics have a reaction to something ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
how many types of physics are there ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers .
what exactly is nanotechnology and does it depend on the laws of physics ?
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is . for one , physics keeps changing as we progress and make new discoveries . new theories do n't just bring new answers . they also create new questions that might not have even made sense when viewed from within the previous the...
what is physics ? to be honest , it ’ s really difficult to define exactly what physics is .
does all the program of physics learnt here provide with enough knowledge to enrol in particular university or college in the us ?
key points many animals regulate their body temperature through behavior , such as seeking sun or shade or huddling together for warmth . endotherms can alter metabolic heat production to maintain body temperature using both shivering and non-shivering thermogenesis . vasoconstriction—shrinking—and vasodilation—expansi...
these adaptations can be behavioral , anatomical , or physiological . some adaptations increase heat production in endotherms when it ’ s cold . others , in both endotherms and ectotherms , increase or decrease exchange of heat with the environment .
reptiles are mostly have 3 1/2 chambered heart which makes them cold blooded but as an exception crocodiles have 4 chambered heart but then also they too are cold blooded why ?
key points many animals regulate their body temperature through behavior , such as seeking sun or shade or huddling together for warmth . endotherms can alter metabolic heat production to maintain body temperature using both shivering and non-shivering thermogenesis . vasoconstriction—shrinking—and vasodilation—expansi...
animals have quite a few different ways to regulate body temperature ! these thermoregulatory strategies let them live in different environments , including some that are pretty extreme . polar bears and penguins , for instance , maintain a high body temperature in their chilly homes at the poles , while kangaroo rats ...
how dose blubber help things live ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
let 's take a look . even functions a function is said to be an even function if its graph is symmetric with respect to the $ y $ -axis . for example , the function $ f $ graphed below is an even function . verify this for yourself by dragging the point on the $ x $ -axis from right to left .
what is the use of describing a function as `` even '' or `` odd '' ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
let 's take a look . even functions a function is said to be an even function if its graph is symmetric with respect to the $ y $ -axis . for example , the function $ f $ graphed below is an even function . verify this for yourself by dragging the point on the $ x $ -axis from right to left .
how can a function be neither even or odd ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
for example , for the even function below , notice how the $ y $ -axis symmetry ensures that $ f ( x ) =f ( -x ) $ for all $ x $ . odd functions a function is said to be an odd function if its graph is symmetric with respect to the origin . visually , this means that you can rotate the figure $ 180^\circ $ about the or...
how do you know whether a function is even or odd if the functions consists of sines and cosines ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
visually , this means that you can rotate the figure $ 180^\circ $ about the origin , and it remains unchanged . another way to visualize origin symmetry is to imagine a reflection about the $ x $ -axis , followed by a reflection across the $ y $ -axis . if this leaves the graph of the function unchanged , the graph is...
what is a function that is neither , is it just not reflecting across the y axis or the origin ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
visually , this means that you can rotate the figure $ 180^\circ $ about the origin , and it remains unchanged . another way to visualize origin symmetry is to imagine a reflection about the $ x $ -axis , followed by a reflection across the $ y $ -axis . if this leaves the graph of the function unchanged , the graph is...
how can you determine if a function has x-axis symmetry , origin symmetry or y-axis symmetry ?
what you will learn in this lesson a shape has reflective symmetry if it remains unchanged after a reflection across a line . for example , the pentagon above has reflective symmetry . notice how line $ l $ is a line of symmetry , and that the shape is a mirror image of itself across this line . this idea of reflective...
let 's take a look . even functions a function is said to be an even function if its graph is symmetric with respect to the $ y $ -axis . for example , the function $ f $ graphed below is an even function . verify this for yourself by dragging the point on the $ x $ -axis from right to left .
why we need to find whether a function is odd one or even one ?
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
what are the similarities of community function and ecosystem functions ?
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
also , many species in predator-prey relationships have evolved adaptations—beneficial features arising by natural selection—related to their interaction . on the prey end , these include mechanical , chemical , and behavioral defenses . some species also have warning coloration that alerts potential predators to their...
can anyone give me separate examples of the various types of adaptations in preys ( mechanical , chemical and behavorial ) ?
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . ''
how do we classify something like vultures or other scavengers ?
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
the fungus has a network of threadlike structures called hyphae , which allow it to capture water and nutrients from the soil and provide them to the plant . commensalism in a commensalism , two species have a long-term interaction that is beneficial to one and has no positive or negative effect on the other ( +/0 inte...
is this considered commensalism , as one species ( scavenger ) benefits and the other does n't care ( being already dead ) ?
key points : an ecological community consists of all the populations of all the different species that live together in a particular area . interactions between different species in a community are called interspecific interactions—inter- means `` between . '' different types of interspecific interactions have differen...
this interaction is beneficial for the predator , but harmful for the prey ( +/- interaction ) . predation may involve two animal species , but it can also involve an animal or insect consuming part of a plant , a special case of predation known as herbivory . predators and prey regulate each other 's population dynami...
should the definition of predation be adjusted ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
with this transfer , the electron will begin its journey through an electron transport chain . photosystem i vs. photosystem ii there are two types of photosystems in the light-dependent reactions , photosystem ii ( psii ) and photosystem i ( psi ) . psii comes first in the path of electron flow , but it is named as se...
in the second paragraph under `` overview of light dependent reactions , '' is photosystem i called p680 or p700 ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
the high-energy electron travels down an electron transport chain , losing energy as it goes . some of the released energy drives pumping of $ \text h^+ $ ions from the stroma into the thylakoid interior , building a gradient . ( $ \text h^+ $ ions from the splitting of water also add to the gradient . )
i am still confused whether the hydrogen ions are pumped from lumen to stroma or from stroma to lumen or both ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
this splitting of water releases the $ \text o_2 $ we breathe . atp synthesis . the high-energy electron travels down an electron transport chain , losing energy as it goes .
how does atp release energy ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
as the electron moves through this electron transport chain , it goes from a higher to a lower energy level , releasing energy . some of the energy is used to pump protons ( $ \text h^+ $ ) from the stroma ( outside of the thylakoid ) into the thylakoid interior . this transfer of $ \text h^+ $ , along with the release...
if this energy is not used to pump protons into the thylakoid lumen , then where does it go ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
these molecules store energy for use in the next stage of photosynthesis : the calvin cycle . overview of the light-dependent reactions before we get into the details of the light-dependent reactions , let 's step back and get an overview of this remarkable energy-transforming process . the light-dependent reactions us...
what is outcome of light dependent reactions ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
instead , the special pair can actually lose an electron when excited , passing it to another molecule in the complex called the primary electron acceptor . with this transfer , the electron will begin its journey through an electron transport chain . photosystem i vs. photosystem ii there are two types of photosystems...
ok so from what i am understanding from this article is that the electrons for the electron transport chain come from the splitting of water , but i am having trouble grasping that ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
the primary electron acceptor of psii is pheophytin , an organic molecule that resembles chlorophyll , while the primary electron acceptor of psi is a chlorophyll called $ \text a_0 $ $ ^ { 7,8 } $ . source of electrons . once an electron is lost , each photosystem is replenished by electrons from a different source .
specifically , are the electrons moving on up and down the chain by themselves ... without protons and neutrons ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
the special pair 's missing electron is replaced by a new electron from psii ( arriving via the electron transport chain ) . nadph formation . the high-energy electron travels down a short second leg of the electron transport chain .
what molecules does nadph consist of , or is it just the name ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
instead , the special pair can actually lose an electron when excited , passing it to another molecule in the complex called the primary electron acceptor . with this transfer , the electron will begin its journey through an electron transport chain . photosystem i vs. photosystem ii there are two types of photosystems...
what do the cytochrome p450 in our livers have in common with the cytochrome in this electron transport chain ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
the positively charged p680 can pull electrons off of water ( which does n't give them up easily ) because it 's extremely `` electron-hungry . '' when the manganese center splits water molecules , it binds two at once , extracting four electrons , releasing four $ \text h^+ $ ions , and producing a molecule of $ \text...
so where do the other 3 molecules of oxygen gas form when producing 1 molecule of glucose ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
the light-dependent reactions use light energy to make two molecules needed for the next stage of photosynthesis : the energy storage molecule atp and the reduced electron carrier nadph . in plants , the light reactions take place in the thylakoid membranes of organelles called chloroplasts . photosystems , large compl...
why does light reaction occurs in stroma lamellae and thylakoid ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
some of the released energy drives pumping of $ \text h^+ $ ions from the stroma into the thylakoid interior , building a gradient . ( $ \text h^+ $ ions from the splitting of water also add to the gradient . ) as $ \text h^+ $ ions flow down their gradient and into the stroma , they pass through atp synthase , driving...
where do the original hydrogen ions in the stoma that are transferred to the lumen come from ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
both photosystems contain many pigments that help collect light energy , as well as a special pair of chlorophyll molecules found at the core ( reaction center ) of the photosystem . the special pair of photosystem i is called p700 , while the special pair of photosystem ii is called p680 . in a process called non-cycl...
what does the 'p ' stand for in the p700 and p680 special pair of the thylakoid membrane ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
some of the released energy drives pumping of $ \text h^+ $ ions from the stroma into the thylakoid interior , building a gradient . ( $ \text h^+ $ ions from the splitting of water also add to the gradient . ) as $ \text h^+ $ ions flow down their gradient and into the stroma , they pass through atp synthase , driving...
where do the hydrogen ions come from ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
some of the released energy drives pumping of $ \text h^+ $ ions from the stroma into the thylakoid interior , building a gradient . ( $ \text h^+ $ ions from the splitting of water also add to the gradient . ) as $ \text h^+ $ ions flow down their gradient and into the stroma , they pass through atp synthase , driving...
is it from the water molecule being broken down leaving h+ ions ?
introduction plants and other photosynthetic organisms are experts at collecting solar energy , thanks to the light-absorbing pigment molecules in their leaves . but what happens to the light energy that is absorbed ? we don ’ t see plant leaves glowing like light bulbs , but we also know that energy ca n't just disapp...
in this series of reactions , the electron is first passed to a protein called ferredoxin ( fd ) , then transferred to an enzyme called nadp $ ^+ $ reductase . nadp $ ^+ $ reductase transfers electrons to the electron carrier nadp $ ^+ $ to make nadph . nadph will travel to the calvin cycle , where its electrons are us...
where does the nadp reductase actually located ?