If a crane uses 500 Joules to raise bricks 20 meters how much Newton’s of force were used

25N

Explanation:

Given parameters:

Potential energy expended  = 500J

Height  = 20m

Unknown:

The force used = ?

Solution:

To solve this problem, we use the expression below:

       Potential energy  = Force applied x height

         500  = Force applied  x 20

     Force applied  = 25N

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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