When We Consider a Thin Horizontal Layer of the Atmosphere

question 3

Multiple Choice

When we consider a thin horizontal layer of the atmosphere, of thickness dy, of area A, with pressure P on the bottom, with an average mass m per molecule, and n_V molecules per unit volume, the magnitude of the difference of the pressure at the top and bottom of the layer is given by dP =

• A) mgdy.
• B) mgn_Vdy.
• C) mgAdy.
• D) mgn_VAdy.
• E) mgn_VAPdy.

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