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A) Standard sea level pressure is approximately 1013 hPa andstandard surface temperature in the U.S Standard Atmosphere is 15degree C. What is the density of dry air under these conditions?

B) A sample of dry air has a pressure of 400 hPa and a density of0.7 kg m^-3. What is its temperature in degrees Celsius?

C) A sample of dry air has a temperature of 30 degree C and aspecific volume of 2.0 m^3 kg^-1. What is the pressure?

D) The record low observed surface pressure (in typhoon Tip, 1979)was 870 hPa; the record high (Mongolia, 2001) was 1087 hPa. Airtemperature at the surface can easily vary between -40.0 degree Cand +50.0 degree C. Find the densities of air corresponding to all four possible combinations of the above extremes.

E) Based on your answers to d, which of the two variables,pressure or temperature, is typically responsible for the mostpronounced variations in the density of air at sea level?

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