Neco Model Questions Vol1 2020 Physics Question 1
Practice objective / multiple choice question 1 from the 2020 Neco Model Questions Vol1 Physics examination.
A metal block is heated to \(150^{\circ}\text{C}\) and placed in a well‑insulated container containing \(200\ \text{g}\) of water at \(20^{\circ}\text{C}\). After thermal equilibrium the temperature of the system is \(30^{\circ}\text{C}\). During the experiment the container loses a total of \(5\ \text{kJ}\) of heat to the surroundings. The specific heat capacities are \(c_{\text{metal}} = 0.45\ \text{kJ·kg}^{-1}\text{K}^{-1}\) and \(c_{\text{water}} = 4.18\ \text{kJ·kg}^{-1}\text{K}^{-1}\). Determine the mass of the metal block (in kilograms).
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About This Question
This is Neco Model Questions Vol1 2020 Physics Question 1. It is one of the objective questions from the 2020 Neco Model Questions Vol1 Physics examination.
Difficulty level: Medium .
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