Practice Questions
Test your understanding with targeted questions related to the topic.
Question 1
Easy
What is the percentage uncertainty in a measurement of 10.0 ± 0.2 g?
💡 Hint: Divide the absolute uncertainty by the measured value.
Question 2
Easy
If a volume is measured as 3.0 ± 0.1 L, what is the absolute uncertainty?
💡 Hint: It's given directly in the measurement.
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Interactive Quizzes
Engage in quick quizzes to reinforce what you've learned and check your comprehension.
Question 1
What happens to percentage uncertainty when you square a value?
- It decreases
- It remains the same
- It doubles
💡 Hint: Remember the percentage uncertainty formula.
Question 2
True or False: The absolute uncertainty decreases when a measurement is multiplied by a number.
- True
- False
💡 Hint: Consider how uncertainties scale with multiplication.
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Challenge Problems
Push your limits with challenges.
Question 1
A cylinder's height is measured as 10.0 ± 0.5 cm and the diameter as 4.0 ± 0.1 cm. Calculate the volume and the percentage uncertainty in that volume.
💡 Hint: Don’t forget that the height contributes to the final uncertainty along with the diameter.
Question 2
A temperature of 25 ± 0.5 °C affects the volume directly measured as 1.5 L ± 0.02 L. Calculate the volume at this temperature while considering the uncertainties.
💡 Hint: Always account for how temperature fluctuations impact measurements in conjunction with uncertainties!
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