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Question 15

From Physics HL Paper 1A (May 2025, TZ3)

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  1. 75 J of thermal energy is transferred to an ideal monatomic gas at a constant pressure of 1.0×105 Pa1.0 \times 10^5 \, \text{Pa}. The volume of the gas increases from 2.7×10−3 m32.7 \times 10^{-3} \, \text{m}^3 to 3.0×10−3 m33.0 \times 10^{-3} \, \text{m}^3.
    What is the change in the internal energy of the gas?

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