Apentix/AP Physics 2/Unit 2: Thermodynamics/Question
AP Physics 2mediummcq1 pt

According to the kinetic molecular theory of gases, which of the following statements about the average kinetic energy of gas molecules is correct?

A.It is directly proportional to the square root of the absolute temperature
B.It is directly proportional to the absolute temperature
C.It is directly proportional to the mass of the gas molecules
D.It is directly proportional to the pressure of the gas

Explanation

Core Concept

According to the kinetic molecular theory, the average kinetic energy of gas molecules is directly proportional to the absolute temperature (KEₐvg = (3/2)kT, where k is Boltzmann's constant and T is the absolute temperature). It is not directly proportional to the square root of temperature, mass of molecules, or pressure.

Correct Answer

BIt is directly proportional to the absolute temperature

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