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3.2 Internal energy and energy transfers

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Question 27
H

A student measures the temperature rise of a block five times and records 18.0 ∘C18.0\ ^\circ\text{C}18.0 ∘C, 19.5 ∘C19.5\ ^\circ\text{C}19.5 ∘C, 18.5 ∘C18.5\ ^\circ\text{C}18.5 ∘C, 18.0 ∘C18.0\ ^\circ\text{C}18.0 ∘C and 19.0 ∘C19.0\ ^\circ\text{C}19.0 ∘C. The uncertainty in the mean is taken as half the range. What is the uncertainty?

[1]
A

±0.75 ∘C\pm 0.75\ ^\circ\text{C}±0.75 ∘C

B

±1.5 ∘C\pm 1.5\ ^\circ\text{C}±1.5 ∘C

C

±0.38 ∘C\pm 0.38\ ^\circ\text{C}±0.38 ∘C

D

±3.0 ∘C\pm 3.0\ ^\circ\text{C}±3.0 ∘C

Markscheme

3.2 Internal energy and energy transfers Questions

  1. GCSE
  2. /Physics
  3. /3.2 Internal energy and energy transfers

40 exam-style questions on AQA GCSE Physics 3.2 Internal energy and energy transfers, covering 3.2.1 Internal energy, 3.2.2 Temperature changes in a system and specific heat capacity, and 3.2.3 Changes of state and specific latent heat. Each one has a worked solution and a mark scheme showing where the marks go.

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