Physics Physics Practice Problems Solutions Library

Uncertainty Solutions Library

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9 solutions

Uncertainty

Q. The cubit is an ancient unit of length based on the distance between the elbow and the tip of the middle finger of the measurer. Assume that the di...

Solved • Oct 23, 2019

Uncertainty

Q. A watch manufacturer claims that its watches gain or lose no more than 8 seconds in a year. How accurate is this watch, expressed as a percentage?

Solved • Oct 29, 2018

Uncertainty

Q. What roughly is the percent uncertainty in the volume of a spherical beach ball whose radius is r = 0.84 ± 0.04 m?

Solved • Oct 29, 2018

Uncertainty

Q. Time intervals measured with a stopwatch typically have an uncertainty of about 0.2 s due to human reaction time at the start and stop moments. Wha...

Solved • Oct 29, 2018

Uncertainty

Q. If a train travels 891 km from Berlin to Paris and then overshoots the end of the track by 13 m, (a) what is the percentage error in the total dist...

Solved • Oct 29, 2018

Uncertainty

Q. The radius of a uniform solid sphere is measured to be (6.50 ± 0.20) cm and its mass is measured to be (1.85 ± 0.02) kg. Determine the density of t...

Solved • Oct 29, 2018

Uncertainty

Q. A calculator displays a result as 1.365 248 0 × 107 kg. The estimated uncertainty in the result is 62%. How many digits should be included as signi...

Solved • Oct 29, 2018

Uncertainty

Q. American football uses a field that is 100 yd long, whereas a regulation soccer field is 100 m long. Which field is longer, and by how much (give y...

Solved • Sep 24, 2018

Uncertainty

Q. What is the percent uncertainty in the measurement 2.58 ∓ 0.15 cm?A) 5.8 %B) 8.7 %C) 12 %D) 2.9 %

Solved • Jan 18, 2017