Physics for Scientists and Engineers with Modern Physics
4th Edition
ISBN: 9780131495081
Author: Douglas C. Giancoli
Publisher: Addison-Wesley
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Textbook Question
Chapter 1, Problem 6P
(II) Time intervals measured with a stopwatch typically have an uncertainly of about 0.2 s, due to human reaction time at the start and stop moments. What is the percent uncertainty of a hand-timed measurement of (a) 5 s, (b) 50 s, (c) 5 min?
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(a) A car speedometer has a 5% uncertainty. What is the range of possible speeds when it reads 90 km/h? (b) Convert this range to miles per hour. Note 1 km = 0.6214 mi.
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. What is the percent uncertainty of a hand-timed measurement of (a) 5.5 s, (b) 55 s, (c) 5.5 min?
(a)A car speedometer has a 5% uncertainty. What is the range of possible speeds (in km/h) when it reads 110 km/h?
km/h (lowest)?
km/h (highest)?
(b)Convert this to miles per hour.
mi/h (lowest)?
mi/h (highest)?
Chapter 1 Solutions
Physics for Scientists and Engineers with Modern Physics
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