Uncertainties Flashcards Preview

AQA A-Level Physics - Practical Skills > Uncertainties > Flashcards

Flashcards in Uncertainties Deck (8)
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1

Uncertainty of mean data?

(Max value - min value) / 2

2

Adding or subtracting data (wire stretched from x cm to y cm)

Add absolute uncertainties

3

Multiplying or dividing data (mass with force applied to it)

Add the percentage uncertainties

4

Raising data to a power (radius squared for circumference)

Multiply percentage uncertainty by the power

5

What does repeating an experiment do?

Reduces random error, increases precision

6

What does taking the mean of the results do?

Reducers random error

7

What does removing outliers do?

Reduces random error

8

Why use a light gate instead of a stopwatch?

Reduces human error