Acrate on a motorized cart starts from rest and moves with a constant eastward acceleration ofa= 2.60 m/s^2. a worker assists the cart by pushing on the crate with a force that is eastward andhas magnitude that depends on time. according to f(t) = (5.40 n/s)t. what is the instantaneouspower supplied by this force at t= 4.70 s

To obtain the power, we first need to find the work made by the force.

1) To calculate the work, we need the next equation:

So the force is given by the problem so our mission is to find 'dx' in terms of 't'

2) we know that:

So we have:

Then:

3) Finally, we replace everything:

After some calculation, we have as a result that the work is:

161.9638 J.

4) To calculate the power we need the next equation:

So

P = 161.9638/4.7 = 34.46 W

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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