CONCEPTUAL Physics 2a Test Bank
Chapter 1. Questions and Correct
Answers.
1. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the
three quantities. What are the other two?
a. length and force
b. power and force
c. length and time
d. force and time
c. length and time
4. The prefixes which are abbreviated f, d, and T represent which of the following?
a. 10-30, 10-2, and 1024
b. 10-15, 102, and 1024
c. 10-15, 10-1, and 1012
d. 10-13, 102, and 1024
e. 10-30, 10-1, and 10-2
c. 10-15, 10-1, and 1012
Brainpower
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20. Areas always have dimensions ____ while volumes always have dimensions ____.
a. m2, m3
b. L2, L3
c. Both a and b are correct.
d. No answer is correct because of the "always."
b. L2, L3
21. When SI units are plugged into an equation, it is found that the units balance. Which of the following
can we expect to be true for this equation?
a. The equation will be dimensionally correct.
b. The equation will be dimensionally correct except sometimes in cases when the right-hand side of the
equation has more than one term.
c. The equation will not be dimensionally correct.
d. All constants of proportionality will be correct.
a. The equation will be dimensionally correct.
, 29. The length and width of a standard sheet of paper is measured, and then the area is found by
calculation to be 91.50 in.2. The number of significant figures in the width measurement must be at least
a. 1.
b. 2.
c. 3.
d. 4.
e. 5.
d.4
30. How many significant figures does the number 3 600 have?
a. 1
b. 2
c. 3
d. 4
e. One cannot tell with certainty when the number is written in the given form, but it will be one of the
other given answers.
e. One cannot tell with certainty when the number is written in the given form, but it will be one of the
other given answers.
31. Assume when using a meter stick measuring can be done so that the last significant figure is in the
tenth of a millimeter digit. If you are measuring an object with length between 6 and 7 cm, how many
significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm
positions?
a. 2
b. 3
c. 4
d. 5
e. more than 5
b. 3
32. The number 0.03 has how many significant figures?
a. 2
b. 3
c. 5
d. 6
e. 7
a. 2
36. Multiplying a 2-significant-figure number by a 4-significant-figure number and then dividing the
product by a seven-significant-figure number yields a number with how many significant figures?
a. 6/7
b. 1
c. 2
Chapter 1. Questions and Correct
Answers.
1. In mechanics, physicists use three basic quantities to derive additional quantities. Mass is one of the
three quantities. What are the other two?
a. length and force
b. power and force
c. length and time
d. force and time
c. length and time
4. The prefixes which are abbreviated f, d, and T represent which of the following?
a. 10-30, 10-2, and 1024
b. 10-15, 102, and 1024
c. 10-15, 10-1, and 1012
d. 10-13, 102, and 1024
e. 10-30, 10-1, and 10-2
c. 10-15, 10-1, and 1012
Brainpower
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20. Areas always have dimensions ____ while volumes always have dimensions ____.
a. m2, m3
b. L2, L3
c. Both a and b are correct.
d. No answer is correct because of the "always."
b. L2, L3
21. When SI units are plugged into an equation, it is found that the units balance. Which of the following
can we expect to be true for this equation?
a. The equation will be dimensionally correct.
b. The equation will be dimensionally correct except sometimes in cases when the right-hand side of the
equation has more than one term.
c. The equation will not be dimensionally correct.
d. All constants of proportionality will be correct.
a. The equation will be dimensionally correct.
, 29. The length and width of a standard sheet of paper is measured, and then the area is found by
calculation to be 91.50 in.2. The number of significant figures in the width measurement must be at least
a. 1.
b. 2.
c. 3.
d. 4.
e. 5.
d.4
30. How many significant figures does the number 3 600 have?
a. 1
b. 2
c. 3
d. 4
e. One cannot tell with certainty when the number is written in the given form, but it will be one of the
other given answers.
e. One cannot tell with certainty when the number is written in the given form, but it will be one of the
other given answers.
31. Assume when using a meter stick measuring can be done so that the last significant figure is in the
tenth of a millimeter digit. If you are measuring an object with length between 6 and 7 cm, how many
significant figures will result if you only use the part of the meter stick between the 1-cm and 9-cm
positions?
a. 2
b. 3
c. 4
d. 5
e. more than 5
b. 3
32. The number 0.03 has how many significant figures?
a. 2
b. 3
c. 5
d. 6
e. 7
a. 2
36. Multiplying a 2-significant-figure number by a 4-significant-figure number and then dividing the
product by a seven-significant-figure number yields a number with how many significant figures?
a. 6/7
b. 1
c. 2
