Neco Model Questions Vol1 2022 Physics Question 45
Practice objective / multiple choice question 45 from the 2022 Neco Model Questions Vol1 Physics examination.
A \(2.0\;\text{kg}\) copper block (specific heat \(c_{\text{Cu}} = 0.385\;\text{kJ·kg}^{-1}\text{K}^{-1}\)) at \(150^{\circ}\text{C}\) is placed in an insulated container with \(5.0\;\text{kg}\) of water (specific heat \(c_{\text{w}} = 4.18\;\text{kJ·kg}^{-1}\text{K}^{-1}\)) initially at \(20^{\circ}\text{C}\). After thermal equilibrium is reached, a \(0.5\;\text{kg}\) piece of ice at \(0^{\circ}\text{C}\) is added and melts completely. The latent heat of fusion of ice is \(L_f = 334\;\text{kJ·kg}^{-1}\). Determine the final temperature of the whole system (in °C, to the nearest degree).
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About This Question
This is Neco Model Questions Vol1 2022 Physics Question 45. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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