Einstein's theory of relativity is currently the best explanation of gravity. what is likely to happen to this theory in the future? a. it will be replaced by a new theory when popular opinion changes. b.it will become a law when there is consensus among scientists  c. it will be replaced by a new theory when enough evidence is collectedd. it will become a law when enough evidence is supported

D. It will become a law when enough evidence is supported.

Explanation:

Based on observations of natural phenomenon, a possible scientific explanation is written and tested. If the results are positive, it becomes a theory. If enough evidence is gathered and can be used generally, it becomes a law. For example Newton's laws of motion are used to describe all kinds of motion on Earth.

Einstein's theory of relativity cannot be tested directly but it's indirect evidence can be gathered because it deals with speeds near to the speed of light and space-time curve.

Thus, when the scientists would gather more evidence in future supporting Einstein's theory of relativity, it would be converted to law.

Option D. is correct.

the small 0.38-kg slider is known to move from position a to position b along the vertical-plane slot. determine (a) the work done on the body by its weight and (b) the work done on the body by the spring. the distance r = 0.70 m, the spring modulus k = 154 n/m, and the unstretched length of the spring is 0.53 m

explanation:

-reverse card

russian is not my first language, so i'm afraid i can't write out an answer in russian, but hopefully you can find a way to do so. here's my best translation of the problem: you're given a plot of a particle's position in one-dimensional space over time, and you're asked to find either the total distance traveled by the particle after 6 seconds had elapsed, or the total displacement of the particle after 6 seconds.

if you want the total distance traveled, you would first need to determine the particle's velocity as a function of time, then integrate that over the 6-second interval. we know the position function is quadratic with roots at 0 and 6, so we have

where is unknown. because the position is parabolic, there is symmetry about the midpoint at , and we know that

so that the position function is

which means the velocity is

then the total distance traveled is

so the total distance traveled is 20 m.

on the other hand, if you want to find displacement: the particle starts at and ends at , so its displacement is 0.