A-level Physics · Kinetic theory

Kinetic energy of a molecule

Use ½m⟨c²⟩ = 3kT/2 for a molecule's mean kinetic energy, the temperature or the rms speed.

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Question 1

Calculate the mean kinetic energy of an atom of an ideal gas at a temperature of 703 °C. Use k = 1.38×10−231.38 \times 10^{-23} J K⁻¹. Give your answer to 3 significant figures.

J

You can type 4.53, 3.2e-5, 3.2 × 10^-5 or 7/3.

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