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Thermal physics (A-level only)

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Question 17

A micro-sensor in a vacuum chamber detects the velocities of five neon atoms in a localized thermal region. The recorded speeds of these five atoms are:

  • Atom 1: 120 m s-1
  • Atom 2: 250 m s-1
  • Atom 3: 320 m s-1
  • Atom 4: 380 m s-1
  • Atom 5: 510 m s-1

What is the root mean square speed, crmsc_{\text{rms}}crms​, of these five neon atoms?

A

316 m s−1316\text{ m s}^{-1}316 m s−1

B

342 m s−1342\text{ m s}^{-1}342 m s−1

C

382 m s−1382\text{ m s}^{-1}382 m s−1

D

764 m s−1764\text{ m s}^{-1}764 m s−1

Markscheme

Thermal physics (A-level only) Questions

  1. A Level
  2. /Physics
  3. /Thermal physics (A-level only)

48 exam-style questions on AQA A Level Physics Thermal physics (A-level only), covering Thermal energy transfer (A-level only), Ideal gases (A-level only), and Molecular kinetic theory model (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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