Physics (AS & A Level) · May / June 2025 · Paper 12 · Question 3
A student calculates the density of a solid steel cube in an experiment. The measured mass is 975 g ± 10 g and the measured length of side is 50 mm ± 1 mm. What is the density of the steel?
- A7.8 g cm⁻³ ± 3.0%
- B7.8 g cm⁻³ ± 7.0%
- C7.8 g cm⁻³ ± 11%
- D7.8 g cm⁻³ ± 13%
As printed in the paper
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Correct answer: B. 7.8 g cm⁻³ ± 7.0%
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