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 2Q
Were the measurements of the block in part (b) of Procedure 2 all done with the same instrument? Explain.
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This information will be used to answer questions 1-5.
Dimension Y is the sum of three parts sequentially numbered 1 through 3. Their dimensions are
X1, X2, and X3. The overall dimension is given by Y = X, + X2 - X3. The dimensions are specified as
X1 = 10 mm, X2 60 mm, and Xg = 35 mm. Tolerance desired on Y is 45 um.
%3!
The unit tolerance value for the first part (i.e., i) is:
O 0.979 um
O 0.097 um
O 1.069 um
O 1.433 um
The constant of proportionality C [mm/um] is:
O 0.1758 um
O 0.0137 um
O 0.0163 um
O 0.0176 um
The measurement error is defined as AX=X-Xo.where Xo is the true value of a physical quantity. X is
the measured value of the physical quantity, AX is also known as "absolute error" What is the correct
understanding to absolute error?
Select one:
O a An absolute error indicates the absolute value of the error.
Ob Absolute error is the difference between the measured value and the true value.
O e Absolute error indicates that the error is always positive.
Od. Absolute eror indicates that the magnitude of an error is certain.
Although these quantities vary from one type of cell
to another, a cell can be 1.9 um in diameter with a
cell wall 60 nm thick.
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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