A-LevelPhysicsPhysical quantities and unitsMay/June 2019Paper 2 Q14 Marks
1 (a) The diameter d of a cylinder is measured as 0.0125m ± 1.6%. (b) The cylinder in (a) stands on a horizontal surface. The pressure p exerted on the surface by the cylinder is given by p = 4W / (πd²) The measured weight W of the cylinder is 0.38 N ± 2.8%.
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