Physics For Scientists And Engineers, Volume 2
9th Edition
ISBN: 9781133954149
Author: Raymond A. Serway, John W. Jewett
Publisher: Cengage Learning
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Textbook Question
Chapter 1, Problem 1.10OQ
A calculator displays a result as 1.365 218 0 X 107 kg. The estimated uncertainty in the result is ±2%. How many digits should be included as significant when the result is written down? (a) zero (b) one (c) two (d) three (e) four
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To measure the perimeter of a triangle, the lengths of sides AB, BC and CA are measured using a caliper with a resolution of 0.05 mm. Performing a single measurement for AB, BC and CA, the values AB= 50.20 mm are read; BC= 55.15 mm and CA= 40.65 mm. Determine the perimeter (P) of the triangle with its uncertainty (uP) and express the result in m.
a) P±uP= (0.146000 ± 0.000050) m
b) P±uP= (146,000 ± 0.050)x10-2 m
c) P±uP= (146.00 ± 0.05)x10-3 m
d) P±uP= (0.146 ± 0.050) m
e) P±uP= (146.0 ± 0.05) m
Which of the following pairs of measured numbers have the same uncertainty or error in both numbers? (mark all correct responses)
Choose all that apply.
a) 3.45 x 10-3 and 5.400 x 10-2
b) 4.6 x 105 and 2.9 x 106
c) 3.305 x 107 and 7.15 x 105
d) 4.8 x 10-4 and 0.34501
e) 45,700 and 4.9 x 104
Function f is defined by
5 = 21 @where a = 4.35 # 0.04 and
y = 1.25 # 0.03
Calculate the absolute uncertainty in f.
Specify your answer up to 3 decimal places.
Chapter 1 Solutions
Physics For Scientists And Engineers, Volume 2
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