Neco Model Questions Vol1 2025 Physics Question 4
Practice objective / multiple choice question 4 from the 2025 Neco Model Questions Vol1 Physics examination.
200 g of water at \(80^{\circ}\text{C}\) is mixed with 100 g of ice at \(-10^{\circ}\text{C}\). The mixture is placed in an insulated container and heated by a \(60\ \text{W}\) electric heater for \(5\) min. Specific heat capacities are \(c_{\text{water}}=4.18\ \text{J g}^{-1}\text{K}^{-1}\), \(c_{\text{ice}}=2.09\ \text{J g}^{-1}\text{K}^{-1}\), and the latent heat of fusion of ice is \(L_f=334\ \text{J g}^{-1}\). Assuming no heat loss to the surroundings, determine the final temperature of the system in degrees Celsius, to one decimal place.
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This is Neco Model Questions Vol1 2025 Physics Question 4. It is one of the objective questions from the 2025 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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