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4 cards from this section. Quick, good the night before a test.
If a length is measured as 25.0 ± 0.5 cm and another length is 10.0 ± 0.2 cm, what is the total length when added together?
Remember to add the absolute uncertainties.
You measured a mass as 75.0 ± 0.3 g and another mass as 30.0 ± 0.2 g. What is the uncertainty in their sum?
Add the uncertainties.
What should you do with absolute uncertainties when adding two measurements?
Think about combining two uncertainty ranges.
If you have two mass measurements, 50 g ± 2 g and 30 g ± 1 g, what is the uncertainty of their sum?
Break down the addition step-by-step.
You need to find the work done, using the formula W = F × d, where F = 200.0 ± 1.0 N and d = 50.0 ± 0.5 m. Calculate the work done and the uncertainty.
Break down each measurement's uncertainty into percentage form before multiplying.
A car's speed is calculated from the formula v = d/t. If d = 120.0 ± 0.5 m and t = 3.0 ± 0.1 s, find the speed and uncertainty.
Remember to calculate the percentage uncertainty for both measurements before finding the overall uncertainty.
6 more questions in this section. Enroll free to practise them all.
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