8) A boy pushes a large 60kg box across the floor so that it accelerates at .5m/s2. He has his arms angled up from the horizontal at 10° as he applies a 100N force. What is the magnitude of the

kinetic friction coefficient between the box and the ground?

truck y has a greater velocity than truck x.

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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gravitational energy

electrical energy

kinetic energy

ligh energy