Physics (AS & A Level) · Feb / March 2025 · Paper 52 · Question 2
9702
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The question as text
A student investigates the cooling of a liquid in a beaker. The temperature θR of the laboratory is measured using a thermometer. Hot water is added to an insulated beaker, as shown in Fig. 2.1. stand thermometer beaker bench insulation heat-proof mat water Fig. 2.1 The thermometer measures the temperature of the water. At time t the temperature of the water is θ. A series of readings of t and θ are taken. It is suggested that θ and t are related by the equation θ = θR + (θ0 – θR) e–( t K) where θ0 is the temperature at t = 0 and K is a constant.
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2(a)[1]
2(b)[2]
2(c)(i)[2]
2(c)(ii)[2]
2(c)(iii)[2]
2(c)(iv)[2]
2(d)(i)[2]
2(d)(ii)[1]
2(e)[1]
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