Neco Model Questions Vol1 2018 Physics Question 14

Practice objective / multiple choice question 14 from the 2018 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2018 Physics Objective / Multiple Choice Medium Difficulty
Question 14 NECO_MODEL_QUESTIONS_VOL1 • 2018 • PHYSICS • objective

A \(150\,\text{g}\) piece of aluminium (specific heat \(c_{1}=0.900\,\text{J\,g}^{-1}\,\text{°C}^{-1}\)) initially at \(80\,\text{°C}\) is placed into \(200\,\text{g}\) of water (\(c_{2}=4.18\,\text{J\,g}^{-1}\,\text{°C}^{-1}\)) at \(20\,\text{°C}\) in an insulated container. Determine (a) the final equilibrium temperature of the system and (b) the amount of heat transferred from the aluminium to the water.

Answer Options

A. T_f = 30.2 °C; Q = 6.5 kJ
Correct Answer B. T_f = 28.4 °C; Q = 7.0 kJ
C. T_f = 25.0 °C; Q = 8.2 kJ
D. T_f = 27.0 °C; Q = 7.5 kJ
Correct Answer
B
Correct Option:
T_f = 28.4 °C; Q = 7.0 kJ

About This Question

This is Neco Model Questions Vol1 2018 Physics Question 14. It is one of the objective questions from the 2018 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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