2023 · M/J · 5054/12 | Q18

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CIE-5054-2023-MJ-p12 · Question 18

You may use a calculator. Take the weight of 1.0 kg to be 9.8 N (acceleration of free fall = 9.8 m/s²).
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18 Which statement describes the transfer of thermal energy in a liquid by convection? A A decrease in its density causes the heated liquid to rise. B Free electrons carry energy large distances through the liquid. C Infrared radiation passes through the liquid and transfers energy. D Particles of the liquid vibrate and pass energy to neighbouring particles.

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5054/12/M/J/23Cambridge O Level Physics 5054 · May/June 2023 · Paper 1 variant 2 · Question 18