Air is contained in a variable-load piston–cylinder device equipped with a stirring paddle wheel. Ini-tially, air is at400kPa and17°C. The paddle wheel is now turned by a motor until75kJ/kg of workhas been transferred to air. Model the air as an ideal gas with constant specific heats and calculate theamount of heat transfer per unit mass that is needed to maintain a constant air temperature whileallowing the gas volume to triple.

what is the question because that is not a question.

the moon affects the earth gravitation ally, causing certain motions of that body and also producing tides in its ocean and atmosphere. the tidal wave in our atmosphere is, however, far too minute to be an effective cause in any known meteorological phenomenon.

explanation:

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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