Neco Model Questions Vol1 2021 Physics Question 36

Practice objective / multiple choice question 36 from the 2021 Neco Model Questions Vol1 Physics examination.

Neco Model Questions Vol1 2021 Physics Objective / Multiple Choice Medium Difficulty
Question 36 NECO_MODEL_QUESTIONS_VOL1 • 2021 • PHYSICS • objective

A metal rod of unknown mass is heated to (150^{\circ}\text{C}\) and then immersed in (200\ \text{g}\) of water at (20^{\circ}\text{C}\) inside an insulated container. The specific heat capacity of the metal is (0.900\ \text{J g}^{-1}\!^{\circ}\text{C}^{-1}\) and that of water is (4.18\ \text{J g}^{-1}\!^{\circ}\text{C}^{-1}\). After thermal equilibrium the final temperature of the system is (30^{\circ}\text{C}\). Determine the mass of the metal (in grams) to the nearest tenth.

Answer Options

A. 70.5
B. 84.2
C. 65.0
Correct Answer D. 77.4
Correct Answer
D
Correct Option:
77.4

About This Question

This is Neco Model Questions Vol1 2021 Physics Question 36. It is one of the objective questions from the 2021 Neco Model Questions Vol1 Physics examination.

Difficulty level: Medium .

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