M
newton's law of universal gravitation works well in ordinary situations on earth, but...
M
newton's law of universal gravitation works well in ordinary situations on earth, but it does not work well
a)
inside the atom, because it is too small.
b)
in large stars, because they are too massive.
c)
in space, because there is no gravity in space.
d)
on the moon, because there is no gravity on the moon.
Answers: 3
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30 points - when can a theory be modified if a new type of technology allows for new observations that raise new questions? a. immediately, while the questions about the theory are being asked b. after new hypotheses related to the theory are tested in experiments c. only after the new observations disprove all parts of the theory d. while scientists begin to think about how the theory could improve
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Visualize the problem and identify special cases first examine the problem by drawing a picture and visualizing the motion. apply newton's 2nd law, ∑f⃗ =ma⃗ , to each body in your mind. don't worry about which quantities are given. think about the forces on each body: how are these consistent with the direction of the acceleration for that body? can you think of any special cases that you can solve quickly now and use to test your understanding later? one special case in this problem is if m2=0, in which case block 1 would simply fall freely under the acceleration of gravity: a⃗ 1=−gj^.
Answers: 1
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