1. I take a 10 minute shower with 110_F water. My showerhead is rated at 2 gallons per minute. Water is supplied to my house at 50_F. (a) How many BTUs of heat energy are needed for me to take a shower

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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