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phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Tests
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Exactly how long do i have to take the exam to the last exam day the 18th?
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The exam has to be completed by the time the Learning Lab closes.
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#$&*
phy 201
Your 'question form' report has been received. Scroll down through the document to see any comments I might have inserted, and my final comment at the end.
** Question Form_labelMessages **
Grav
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For the elliptical orbit, based on theory:
By how much should the KE of the satellite change from 'initial' position 2 Earth radii from the center and the point where it 'skims' the surface?
What therefore should be the velocity of the object as it 'skims' the surface, assuming that the initial velocity you gave it was accurate? How does this velocity compare to the velocity you observed?
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Your answer (start in the next line):
(elliptical orbit) how much KE change in theory:
theoretical velocity skimming surface, based on observed initial velocity:
comparison with observations:
your brief discussion/explanation:
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I dont get what it means when it is asking about the theoretical values how are we supposed to calculate them?
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There are no nonconservative forces present, so KE + PE is constant.
You can calculated the PE, which is -G M m / r, at each point and infer the change in KE.
Note also, in case you find it useful to aid you in remembering the formulas, that the derivative with respect to r of -G M m / r is G M m / r^2, which is the gravitational force.
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