TEST BANK FOR_SERWAY AND VUILLE’S_COLLEGE PHYSICS NINTH EDITION, VOLUMES 1 & 2

1. Since 1983 the standard meter has been defined in terms of which of the following?
a.
specific alloy bar housed at Sevres, France
b.
wavelength of light emitted by krypton-86
c.
distance from the Earth's equator to the
North Pole
d.
the distance light travels in a certain fraction
of a second
ANS: D PTS: 1 DIF: 1
TOP: 1.1 Standards of Length, Mass, and Time
2. Since 1967 the standard definition for the second has been based on which of the following?
a.
characteristic frequency of the cesium-133
atom
b.
average solar day
c.
sidereal day
d.
Greenwich Civil Time
ANS: A PTS: 1 DIF: 1
TOP: 1.1 Standards of Length, Mass, and Time
3. 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
ANS: C PTS: 1 DIF: 1
TOP: 1.1 Standards of Length, Mass, and Time
4. The prefixes which are abbreviated p, n, and G represent which of the following?
a.
10-2, 10-6, and 1015
b.
10-9, 106, and 1010
c.
10-12, 10-9, and 109
d.
10-15, 10-6, and 1012
ANS: C PTS: 1 DIF: 1
TOP: 1.1 Standards of Length, Mass, and Time
5. The ratio M/m of the prefixes M and m has what value?
a.
103
b.
106
c.
109
d.
1018
ANS: C PTS: 1 DIF: 2
TOP: 1.1 Standards of Length, Mass, and Time
6. One year is about ____ seconds while one day is exactly ____ seconds.
a.
3.16 ´ 107, 86 400
b.
5.26 ´ 105, 86 400
c.
3.16 ´ 107, 8 640
d.
1.04 ´ 106, 36 000
ANS: A PTS: 1 DIF: 2
TOP: 1.1 Standards of Length, Mass, and Time
7. The nuclei of atoms contain
a.
electrons only.
b.
neutrons only.
c.
protons and electrons.
d.
protons and neutrons.
ANS: D PTS: 1 DIF: 1
TOP: 1.2 The Building Blocks of Matter
8. When was the existence of the neutron confirmed?
a.
in ancient times
b.
in 1895
c.
in 1932
d.
in 1969
ANS: C PTS: 1 DIF: 1
TOP: 1.2 The Building Blocks of Matter
9. The proton contains which of the following combination of quarks?
a.
two up quarks and one down quark
b.
one up quark and two down quarks
c.
one top quark and two bottom quarks
d.
two top quarks and one bottom quark
ANS: A PTS: 1 DIF: 2
TOP: 1.2 The Building Blocks of Matter
10. Which formula is dimensionally consistent with an expression yielding a value for velocity? (a is
acceleration, x is distance, and t is time)
a.
v/t2
b.
vx2
c.
v2/t
d.
at
ANS: D PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
11. Which expression is dimensionally consistent with an expression that would yield a value for time-1? (v is
velocity, x is distance, and t is time)
a.
v/x
b.
v2/x
c.
x/t
d.
v2t
ANS: A PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
12. If the displacement of an object, x, is related to velocity, v, according to the relation x = Av, the constant,
A, has the dimension of which of the following?
a.
acceleration
b.
length
c.
time
d.
area
ANS: C PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
13. The speed of a boat is often given in knots. If a speed of 5 knots were expressed in the SI system of units,
the units would be:
a.
m.
b.
s.
c.
m/s.
d.
kg/s.
ANS: C PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
14. If a is acceleration, v is velocity, x is position, and t is time, then which equation is not dimensionally
correct?
a.
t = x/v
b.
a = v2/x
c.
v = a/t
d.
t2 = 2x/a
ANS: C PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
15. Suppose an equation relating position, x, to time, t, is given by x = b t3 + c t4, where b and c are constants.
The dimensions of b and c are respectively:
a.
T3, T4.
b.
1/T3, 1/T4.
c.
L/T3, L/T4.
d.
L2×T3, L2×T4.
ANS: C PTS: 1 DIF: 2 TOP: 1.3 Dimensional Analysis
16. 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."
ANS: B PTS: 1 DIF: 1 TOP: 1.3 Dimensional Analysis
17. Which one of the choices below represents the preferred practice regarding significant figures when
adding the following: 12.4 + 11 + 67.37 + 4.201?
a.
94.971
b.
94.97
c.
95.0
d.
95
ANS: D PTS: 1 DIF: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
18. Which one of the choices below represents the preferred practice regarding significant figures when
multiplying the following: 10.5 ´ 8.8 ´ 3.14?
a.
290
b.
290.136
c.
290.1
d.
300
ANS: A PTS: 1 DIF: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
19. Calculate (0.82 + 0.042) ´ (4.4 ´ 103), keeping only significant figures.
a.
3 800
b.
3 784
c.
3 793
d.
3 520
ANS: A PTS: 1 DIF: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
20. The length and width of a standard sheet of paper is measured, and then the area is found by calculation to
be 93.50 in2. The number of significant figures in the width measurement must be at least:
a.
1.
b.
2.
c.
3.
d.
4.
ANS: D PTS: 1 DIF: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
21. The number 0.000 17 has how many significant figures?
a.
2
b.
3
c.
5
d.
6
ANS: A PTS: 1 DIF: 2
TOP: 1.4 Uncertainty in Measurement and Significant Figures
22. Multiplying a 2 significant figure number by a 3 significant figure number and then dividing the product
by a six significant figure number yields a number with how many significant figures?
a.
5/6
b.
1
c.
2
d.
11
ANS: C PTS: 1 DIF: 3
TOP: 1.4 Uncertainty in Measurement and Significant Figures
23. 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.
more than 4
ANS: B PTS: 1 DIF: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
24. 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 82- and 95-cm
positions?
a.
2
b.
3
c.
4
d.
more than 4
ANS: B PTS: 1 DIF: 2
TOP: 1.4 Uncertainty in Measurement and Significant Figures
25. 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 25 and 57 cm, how many
significant figures will result if you only use the part of the meter stick between the 2- and 95-cm
positions?
a.
2
b.
3
c.
4
d.
more than 4
ANS: C PTS: 1 DIF: 2
TOP: 1.4 Uncertainty in Measurement and Significant Figures
26. How many significant figures does the number 1 700 have?
a.
2
b.
3
c.
4
d.
One cannot tell with certainty when the
number is written in the given form, but it will
be one of the other given answers.
ANS: D PTS: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures
27. In the text are the following conversion factors:
i. 1 mi = 1 609 m
ii. 1 m = 39.37 in.
iii. 1 ft = 30.48 cm
iv. 1 in. = 2.54 cm
The 1 on the left hand side is assumed to have the same number of significant figures as the number on
the right hand side of each of these equations. However, 2 of these conversion factors are exact, and this
means they have the equivalent of an unlimited number of significant figures when used in calculations.
Which 2 are the exact conversion factors?
a.
i and ii
b.
i and iii
c.
ii and iii
d.
iii and iv
ANS: D PTS: 1
TOP: 1.4 Uncertainty in Measurement and Significant Figures | 1.5 Conversion of Units
28. On planet Q the standard unit of volume is called the guppy. Space travelers from Earth have determined
that one liter = 38.2 guppies. How many guppies are in 150 liters?
a.
5 730 guppies
b.
0.255 guppies
c.
3.93 guppies
d.
188 guppies
ANS: A PTS: 1 DIF: 1 TOP: 1.5 Conversion of Units
29. On planet Z, the standard unit of length is the foose. Ann the Astronaut is 5.90 feet tall on earth. She lands
on planet Z and is measured to be 94 foosi tall. Her partner Rachael is 88 foosi tall. How tall is Rachael
on Earth?
a.
5.2 feet
b.
5.5 feet
c.
5.8 feet
d.
6.3 feet
ANS: B PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
30. A furlong is a distance of 220 yards. A fortnight is a time period of two weeks. A race horse is running at
a speed of 5.00 yards per second. What is his speed in furlongs per fortnight?
a.
27 500 furlongs/fortnight
b.
13 700 furlongs/fortnight
c.
6 220 furlongs/fortnight
d.
2 750 furlongs/fortnight
ANS: A PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
31. A cereal box has the dimensions of 0.19 m ´ 0.28 m ´ 0.070 m. If there are 3.28 feet per meter, then what
is the volume of the box in cubic feet?
a.
0.13 cubic feet
b.
0.040 cubic feet
c.
0.012 cubic feet
d.
0.003 7 cubic feet
ANS: A PTS: 1 DIF: 1 TOP: 1.5 Conversion of Units
32. The distance to the Andromeda Galaxy is estimated at about 2 ´ 106 light years. A light year is the
distance traveled by light in one year; if the speed of light is 3 ´ 108 m/s, about how far is it from our
galaxy to Andromeda? (1 year = 3.15 ´ 107 s)
a.
10 ´ 1015 m
b.
1 ´ 1018 m
c.
2 ´ 1022 m
d.
6 ´ 1012 m
ANS: C PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
33. A cement truck can pour 20 cubic yards of cement per hour. Express this in ft3/min.
a.
1/3 ft3/min
b.
1.0 ft3/min
c.
3 ft3/min
d.
9 ft3/min
ANS: D PTS: 1 DIF: 1 TOP: 1.5 Conversion of Units
34. Water flows into a swimming pool at the rate of 8.0 gal/min. The pool is 16 ft wide, 32 ft long and 8.0 ft
deep. How long does it take to fill? (1 U.S. gallon = 231 cubic inches)
a.
32 hours
b.
64 hours
c.
48 hours
d.
24 hours
ANS: B PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
35. When NASA was communicating with astronauts on the moon, the time from sending on the Earth to
receiving on the moon was 1.28 s. Find the distance from Earth to the moon. (The speed of radio waves is
3.00 ´ 108 m/s.)
a.
240 000 km
b.
384 000 km
c.
480 000 km
d.
768 000 km
ANS: B PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
36. The mass of the sun is 2.0 ´ 1030 kg, and the mass of a hydrogen atom is 1.67 ´ 10-27 kg. If we assume
that the sun is mostly composed of hydrogen, how many atoms are there in the sun?
a.
1.2 ´ 1056 atoms
b.
3.4 ´ 1056 atoms
c.
1.2 ´ 1057 atoms
d.
2.4 ´ 1057 atoms
ANS: C PTS: 1 DIF: 2 TOP: 1.5 Conversion of Units
37. The information on a one-gallon paint can is that the coverage, when properly applied, is 450 ft2. One
gallon is 231 in3. What