Neco 2021 Physics Question 26
Practice objective / multiple choice question 26 from the 2021 Neco Physics examination.
A 2.0 kg iron block (specific heat \(c_{\text{Fe}}=450\ \text{J\,kg}^{-1}\text{K}^{-1}\)) is heated to an unknown temperature \(T_i\) and then placed into 0.5 kg of water at \(20^{\circ}\text{C}\) in an insulated container. After equilibrium the water temperature rises to \(45^{\circ}\text{C}\). However, 5\% of the heat lost by the iron is transferred to the surroundings. Find \(T_i\) (in \(^\circ\)C).
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About This Question
This is Neco 2021 Physics Question 26. It is one of the objective questions from the 2021 Neco Physics examination.
Difficulty level: Medium .
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