3 years ago

If the sun were to vanish instantly would earth immediately fly out of its orbit explain why or why not

1 answer:

7 0

<span>Answer: No, because Einstein demonstrated that nothing can exceed the speed of light in a vacuum and for something to happen instantly over that distance would require that speed to be exceeded. If somehow the sun were to vanish, without explosive effects, an enormous gravity wave would begin travelling outward affecting the planets at the speed of light - thus taking about 8 minutes to reach earth. But that is irrelevant because the only way to remove all that matter would be total conversion of the mass to energy and that energy would totally destroy everything - after the same 8 minutes. Mike1942f Â· 9 years ago</span>

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An 880n box is pushed across a level floor for a distance of 5.0m with a force of 440n. how much work was done on the box

Simora [160]

W=Fd, F=440N, d=5m. 5x440=2,200J of work

8 0

3 years ago

Read 2 more answers

A positive test charge q is released from rest at distance r away from a charge of Q and a distance 2r away from a charge of 2Q.

Luba_88 [7]

Answer: Option (b) is the correct answer.

Explanation:

It is given that a positive test charge q is released from rest at a distance r away from a charge of +Q and a distance 2r which is away from a charge of +2Q.

Then test charge to the right immediately after being released.

Therefore, the net force will be as follows.

F = $\frac{kqQ}{r^{2}} - kq\frac{(2Q)}{(2r)^{2}}$