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MP DTE Translational KE — practice questions

Explore 1 free Translational KE questions in MP DTE Physics. Open each question or exercise to read its content, reference answers and available explanation.

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Translational KE questions and exercises with answers

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Average translational KE of a He atom at 300 K is approximately ($k_B = 1.38 \times 10^{-23}$ J/K):Read the answer and worked solution →

Worked practice questions

Average translational KE of a He atom at 300 K is approximately ($k_B = 1.38 \times 10^{-23}$ J/K):

  1. $6.2 \times 10^{-21}$ J
  2. $6.2 \times 10^{-23}$ J
  3. $300 k_B$
  4. $1$ J
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Correct answer: A. $6.2 \times 10^{-21}$ J

$\frac{3}{2} k_B T = \frac{3}{2} \times 1.38 \times 10^{-23} \times 300 \approx 6.21 \times 10^{-21}$ J per atom. Same for all monatomic gases at the same temperature.

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