Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 3, Problem 2Q
To determine
The major factors that might account for the experimental errors in the first four density determinations in Data Table 4.
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The mass of an aluminum cube was measured to be (A)=71.2 g. Using
the Vernier caliper, the length of its side has measurements between
29 mm and 30 mm in the main scale and falls exactly at the (B)=28
mark on Vernier scale. From this data, what is the percent error
between the standard and experimental density of aluminum in (F)?
Density of Solids
Side Length Measurement
Density (N)
Volume
Percent
Material Mass (g) Number of Tick Marks Final Reading (cm³) Standard Experimental Error (%)
Main Scale Vernier Scale
(mm)
Aluminum (A)
29 and 30
(B)
(C)
(D)
2.70
(E)
(F)
O 5.052%
2.095%
7.603%
O 3.348%
How is error analysis done in the experiments you have done? Explain how the change between the number of data reads, mean value, actual value and error should be when performing an experiment?
The calibrated length of a baseline is 402.267 m. A mean observation for the distance is 402.251 m with a standard deviation of ±0.0052 m after 6 readings with an EDM. a. Is the observed distance statistically different from the calibrated length at a 5 percent level of significance? b. Is the observed distance statistically different from the calibrated length at a 10 percent level of significance?
Chapter 3 Solutions
Physics Laboratory Experiments
Ch. 3 - Prob. 1ASACh. 3 - Does a laboratory balance measure weight or mass?...Ch. 3 - What is the function of the vernier scale on the...Ch. 3 - Distinguish between positive and negative zero...Ch. 3 - What is the purpose of the ratchet mechanism on a...Ch. 3 - Explain how readings from 0.00 through 1.00 mm are...Ch. 3 - Prob. 7ASACh. 3 - Prob. 8ASACh. 3 - Explain the probable source of error(s) in the...Ch. 3 - Prob. 2Q
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