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26. When non-metric units were used in the United Kingdom, a unit of mass called the pound-mass (lbm) was employed, where 1 lbm = 0.4539 kg. (a) If there is an uncertainty of 0.0001 kg in the pound-mass unit, what is its percent uncertainty? (b) Based on that percent uncertainty, what mass in pound-mass has an uncertainty of 1 kg when converted to kilograms?

26. When non-metric units were used in the United Kingdom, a unit of mass called the pound-mass (lbm) was employed, where 1 lbm = 0.4539 kg. (a) If there is an uncertainty of 0.0001 kg in the pound-mass unit, what is its percent uncertainty? (b) Based on that percent uncertainty, what mass in pound-mass has an uncertainty of 1 kg when converted to kilograms?

College Physics
College Physics
11th Edition
ISBN:9781305952300
Author:Raymond A. Serway, Chris Vuille
Publisher:Raymond A. Serway, Chris Vuille
Chapter1: Units, Trigonometry. And Vectors
Section: Chapter Questions
Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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Answer to question 26
verage d. (b) o the ts. as 65 mass over is time. (a) Calculate the percent uncertainty in the distance. (b) Calculate the uncertainty in the elapsed time. (c) What is the average speed in meters per second? (d) What is the uncertainty in the average speed? 25. The sides of a small rectangular box are measured to be 1.80+ 0.01 cm, 2.05 ± 0.02 cm, and 3.1 +0.1 cm long. Calculate its volume and uncertainty in cubic centimeters. = 26. When non-metric units were used in the United Kingdom, a unit of mass called the pound-mass (lbm) was employed, where 1 lbm = 0.4539 kg. (a) If there is an uncertainty of 0.0001 kg in the pound-mass unit, what is its percent uncertainty? (b) Based on that percent uncertainty, what mass in pound-mass has an uncertainty of 1 kg when converted to kilograms? 27. The length and width of a rectangular room are measured to be 3.955 +0.005 m and 3.050 +0.005 m. Calculate the area of the room and its uncertainty in square meters. 28. A car engine moves a piston with a circular cross section of 7.500+0.002 cm diameter a distance of
Transcribed Image Text:verage d. (b) o the ts. as 65 mass over is time. (a) Calculate the percent uncertainty in the distance. (b) Calculate the uncertainty in the elapsed time. (c) What is the average speed in meters per second? (d) What is the uncertainty in the average speed? 25. The sides of a small rectangular box are measured to be 1.80+ 0.01 cm, 2.05 ± 0.02 cm, and 3.1 +0.1 cm long. Calculate its volume and uncertainty in cubic centimeters. = 26. When non-metric units were used in the United Kingdom, a unit of mass called the pound-mass (lbm) was employed, where 1 lbm = 0.4539 kg. (a) If there is an uncertainty of 0.0001 kg in the pound-mass unit, what is its percent uncertainty? (b) Based on that percent uncertainty, what mass in pound-mass has an uncertainty of 1 kg when converted to kilograms? 27. The length and width of a rectangular room are measured to be 3.955 +0.005 m and 3.050 +0.005 m. Calculate the area of the room and its uncertainty in square meters. 28. A car engine moves a piston with a circular cross section of 7.500+0.002 cm diameter a distance of
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