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A2 1 Deformation, Thermal Physics, Circular Motion, SHM and Gravity

Quick questions on Thermal physics and ideal gases: heat capacity, the ideal gas equation and kinetic theory - CCEA A-Level Physics

3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.

What is q1?
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How much energy is needed to heat 0.50 kg0.50\ \text{kg} of water from 20 ∘C20\ ^\circ\text{C} to 80 ∘C80\ ^\circ\text{C}? Take c=4200 J kg−1 K−1c = 4200\ \text{J kg}^{-1}\,\text{K}^{-1}. [2 marks]
What is q2?
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State what the absolute temperature of a gas measures, according to kinetic theory. [1 mark]
What is q3?
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A fixed mass of ideal gas at 1.0×105 Pa1.0 \times 10^{5}\ \text{Pa} occupies 0.020 m30.020\ \text{m}^3. It is compressed isothermally to 0.012 m30.012\ \text{m}^3. Find the new pressure.

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