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Short answer·Routine exam skill (2/5)·No calculator

Difficulty guide

The label describes the problem, not your ability.

1/5 - Foundational

Warm-up setup; checks one basic idea.

2/5 - Routine exam skill

Normal syllabus skill; usually one main rule or interpretation.

3/5 - Standard multi-step

Exam-style problem with multiple steps or a common trap.

4/5 - Hard exam skill

High-end exam problem; combines methods carefully.

5/5 - Challenge

Stretch problem beyond normal exam pressure.

Question

A 0.40 kg0.40\text{ kg} block of aluminium with c=900 J kg−1K−1c=900\text{ J kg}^{-1}\text{K}^{-1} is heated from 25∘C25^\circ\text{C} to 75∘C75^\circ\text{C}.
Total: 2 marks

(a) Find the heat supplied. (1 mark)

(b) If the same heat is supplied to 0.40 kg0.40\text{ kg} water, will the temperature rise be larger or smaller? Explain. (1 mark)

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cbse-physics-11.u7.t7-5.saq.008

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