A spaceship hovering over the surface of Mercury drops an object from a height of 74 m. How much longer does it take to reach the surface than if dropped from the same height on Earth? Neglect air resistance in both cases. [The acceleration due to gravity on Mercury is 37.8% of that on Earth, gMercury = (0.378)g.]

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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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causes

fossil fuels burn

cities become more industrialized

human population grows worldwide