Maths skills

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5 Terms

1
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What is the uncertainty on a piece of apparatus?

The smallest graduation eg. 1mm on a ruler

2
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What is the calculation for % error?

(Uncertainy value / measurement) x 100

3
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Uncertainty: Adding or subtracting values

Add the absolute uncertanties

4
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% error: Multiplying / divide values

Add the percentage uncertanties

5
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% error: Power values (1+Example)

Multiply the percentage error by power

% error = 10%, power = 2 so 10×2 = 20%