20. Carry out the operation. Express the answer by rounding it off to the correct significant figures. (3.26 x 10^-3) - (7.88 x 10^-5) O 0.00318 O 0.00320 21. Carry out the operation. Express the answer by rounding it off to the correct significant figures. (4.02 x 10^6) + (7.74 x 10^7) 3.18 x 10^-3 3.20 x 10^-3

College Physics
1st Edition
ISBN:9781938168000
Author:Paul Peter Urone, Roger Hinrichs
Publisher:Paul Peter Urone, Roger Hinrichs
Chapter1: Introduction: The Nature Of Science And Physics
Section: Chapter Questions
Problem 17PE: State how many significant figures are proper in the results of the following calculations: (a)...
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20. Carry out the operation. Express the answer by
rounding it off to the correct significant figures.
(3.26 x 10^-3) - (7.88 x 10^-5)
0.00318
3.18 x 10^-3
3.20 x 10^-3
0.00320
21. Carry out the operation. Express the answer by
rounding it off to the correct significant figures.
(4.02 x 10^6) + (7.74 x 10^7)
8.14 x 10^7
8.14 x 10^6
8.14 x 10^8
81,400,000
Transcribed Image Text:20. Carry out the operation. Express the answer by rounding it off to the correct significant figures. (3.26 x 10^-3) - (7.88 x 10^-5) 0.00318 3.18 x 10^-3 3.20 x 10^-3 0.00320 21. Carry out the operation. Express the answer by rounding it off to the correct significant figures. (4.02 x 10^6) + (7.74 x 10^7) 8.14 x 10^7 8.14 x 10^6 8.14 x 10^8 81,400,000
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