A-LevelPhysicsPhysical quantities and units9702/12 · May/June 2010 · Q31 Mark
A student finds the density of a liquid by measuring its mass and its volume. The following is a summary of his measurements. mass of empty beaker = (20 ± 1)g mass of beaker + liquid = (70 ± 1)g volume of liquid = (10.0 ± 0.6) cm³ He correctly calculates the density of the liquid as 5.0 g cm⁻³. What is the uncertainty in this value?
A0.3 g cm⁻³
B0.5 g cm⁻³
C0.6 g cm⁻³
D2.6 g cm⁻³
✓ Correct answer
B: 0.5 g cm⁻³
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