Gce Model Questions Vol1 2023 Physics Question 24
Practice objective / multiple choice question 24 from the 2023 Gce Model Questions Vol1 Physics examination.
A \(0.5\) kg copper block (specific heat \(c_{Cu}=385\) J kg\(^{-1}\)K\(^{-1}\)) initially at \(150^{\circ}\)C is placed into \(2.0\) kg of water (specific heat \(c_{w}=4186\) J kg\(^{-1}\)K\(^{-1}\)) at \(20^{\circ}\)C inside an insulated container. The container loses heat to the surroundings at a rate \(\dot Q = k\,(T-20^{\circ}{\rm C})\) with \(k = 2\) W K\(^{-1}\). Assuming thermal equilibrium is reached after \(5\) minutes, determine (a) the equilibrium temperature of the water‑copper system, and (b) the total heat lost to the surroundings during the \(5\) minute interval.
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About This Question
This is Gce Model Questions Vol1 2023 Physics Question 24. It is one of the objective questions from the 2023 Gce Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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