Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
Calculate the total uncertainty of A = 10.00 ± 0.02 g and B = 5.00 ± 0.01 g when added.
💡 Hint: Add the absolute uncertainties.
Question 2
Easy
If two distances are measured as 30.0 ± 0.1 m and 50.0 ± 0.2 m, what is the total distance?
💡 Hint: Keep in mind to add the uncertainties.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
When adding two measurements, how is total uncertainty determined?
- Their percentage uncertainties are added
- Their absolute uncertainties are added
- Their relative uncertainties are multiplied
💡 Hint: Think about how the uncertainties relate to the measurements.
Question 2
True or False: Systematic errors can vary in magnitude for repeated measurements.
- True
- False
💡 Hint: Consider how errors influence measurement reliability.
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Challenge Problems
Push your limits with challenges.
Question 1
A balance shows a weight of 75.0 ± 0.5 g, and you want to mix it with a substance weighing 50.0 ± 0.3 g. After mixing, calculate the total mass and its uncertainty.
💡 Hint: Look closely at how you add weights.
Question 2
You measure a creature at 20.0 ± 0.2 cm and another at 15.0 ± 0.1 cm. Calculate the effective combined length when they are placed end to end.
💡 Hint: Concentrate on the addition of both lengths and uncertainties.
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