A-LevelPhysicsWork, energy and power9702/12 · Oct/Nov 2019 · Q141 Mark
The gas in an engine does work on a piston of cross-sectional area 80 cm². The pressure on the piston has a constant value of 4.6 × 10⁵ Pa. [Figure showing a piston moving 25 cm, with 'force of gas pushing piston'] How much work is done by the gas on the piston when it moves through a distance of 25 cm?
This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.
A9.2 × 10² J
B9.2 × 10⁴ J
C9.2 × 10⁶ J
D9.2 × 10⁸ J
✓ Correct answer
A: 9.2 × 10² J
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