Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 2, Problem 3Q
Referring to the dart analogy in Fig. 2.3, draw a dart grouping that would represent poor precision but good accuracy with an average value.
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Modern instruments usually have digital readouts; the reading in the rightmost digit will
sometimes fluctuate up and down among several values.
What type of error is this?
Explain its
effect on a large data set.
I have an homework where I was asked to get a generic 12 in/30 cm ruler and then answer the question in bold:
Look at the smallest division and record what the uncertainty ▲x is of your tool.
I am not sure how to ansswer this.
Note: the previous question asked me to choose a unit of measurement on our tool which is the ruler and I choose inches (I hope that is a unit of measurement).
Find the Absolute Error (A.E) and relative error (R.E). Also, determine the number of
significant digits in the approximation.
(i)
(ii)
(iii)
Hints
a = 5.6543612, a' = 5.5543612
b = 48.460544, b' = 47.060543
c = 64016314, c' = 51006314
1. Use 8 digits in your calculations.
2. a', b', c' are approximations to a, b, c respectively.
Chapter 2 Solutions
Physics Laboratory Experiments
Ch. 2 - Do experimental measurements give the true value...Ch. 2 - Distinguish between random (statistical) error and...Ch. 2 - What is the difference between measurement...Ch. 2 - What determines how many figures are significant...Ch. 2 - In expressing experimental error or uncertainty,...Ch. 2 - How could the function y = 3t2 + 4 be plotted on a...Ch. 2 - Read the measurements on the rulers in Fig. 2.9,...Ch. 2 - Were the measurements of the block in part (b) of...Ch. 2 - Referring to the dart analogy in Fig. 2.3, draw a...Ch. 2 - Prob. 4Q
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