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Physics 10 Online
OpenStudy (anonymous):

E=mc^2 momentum x speed of light?

OpenStudy (mos1635):

m=mass

OpenStudy (chaise):

Energy = mass x speed of light^2 Momentum is denoted with a p in classical physics.

OpenStudy (anonymous):

Energy = momentum of light x speed of light?

OpenStudy (chaise):

Energy is a property of the mass of an object. You know how when you burn a food you are producing heat energy? When you eat a food your body converts it to energy for you to use? This is the equation: Energy = Mass x Speed of light x Speed of light Energy = Mass x Speed of light^2

OpenStudy (anonymous):

so mass is not the mass of light?

OpenStudy (chaise):

Nope. Although the term mass is a little misleading, and a little ambiguous.

OpenStudy (anonymous):

thanks

OpenStudy (vincent-lyon.fr):

Quote: "Energy = momentum of light x speed of light?" This transcribes:\[E=pc\]This is true only for particles with mass=0. The general relation for any particle goes:\[E=\sqrt{p ^{2}c ^{2}+m ^{2}c ^{4}}\]

OpenStudy (ujjwal):

mc would be momentum of particle if the velocity of particle would be equal to speed of light.. why would you need to project the body at light's speed to find its equivalent energy?? so, it's non sense to think that mc is momentum.. Even for a particle of mass m at rest, the energy is given by mc^2.. we are not concerned with whether the body even has a momentum or not..

OpenStudy (anonymous):

tyvm

OpenStudy (anonymous):

vincent, you look like my teacher lol

OpenStudy (anonymous):

how about this: can mass exist in 2d?

OpenStudy (ujjwal):

can you exist in 2d??

OpenStudy (anonymous):

i do exist in 2d

OpenStudy (ujjwal):

so, you have length and breadth and no height.. hmmm... so you are like a sketch on a paper..

OpenStudy (anonymous):

many 2d me's exist

OpenStudy (anonymous):

in a 3d world

OpenStudy (unklerhaukus):

In these equations c=speed of light in a vacuum which is constant

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