Which of the following is a scalar quantity?
A.Speed
B.Velocity
C.Displacement
D.Acceleration
E.Noneofthese
A plane traveling north at 200m/s turns and then travels south at 200m/s. The change in its velocity is:
A.zero
B.200m/snorth
C.200m/ssouth
D.400m/snorth
E.400m/ssouth
When you step on the accelerator to increase the speed of your car, the force that accelerates the caris:
A.the force of your foot on the accelerator
B.the force of friction of the road on the tires
C.the force of the engine on the drive shaft
D. the normal force of the road on tires
A rifle of mass M is initially at rest but free to recoil. It fires a bullet of mass m and velocity v(relative to the ground). After firing, the velocity of the rifle(relative to the ground)is:
A. −mv
B. −Mv/m
C. −mv/M
D. −v
E. mv/M
1 mi is equivalent to 1609 m so 55 mph is:
A 15 m/s
B 25 m/s
C 66 m/s
D 88 m/s
1. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 cm has a total
surface area of:
A) 1.7 × 10–3 m2
B) 3.2 × 10–3 m2
C) 2.0 × 10–3 m3
D) 5.3 × 10–3 m2
E) 7.4 × 10–3 m2
2. A square with an edge of exactly 1 cm has an area of:
A) 10–6 m2
B) 10–4 m2
C) 102 m2
D) 104 m2
E) 106 m2
3. Suppose A = BnCm, where A has dimensions length · time, B has dimensions length2 ·
time–1, and C has dimensions length · time2. Then the exponents n and m have the
values:
A) 2/3; 1/3
B) 2; 3
C) 4/5; –1/5
D) 1/5; 3/5
E) 1/2; 1/2
4. Which of the following weighs about a pound?
A) 0.05 kg
B) 0.5 kg
C) 5 kg
D) 50 kg
E) 500 kg
5. The SI standard of time is based on:
A) the daily rotation of the earth
B) the frequency of light emitted by R86
C) the yearly revolution of the earth about the sun
D) a precision pendulum clock
E) none of these
6. The SI standard of length is based on:
A) the distance from the north pole to the equator along a meridian passing through
Paris
B) wavelength of light emitted by Hg198
C) wavelength of light emitted by Kr86
D) a precision meter stick in Paris
E) the speed of light
7. 1 m is equivalent to 3.281 ft. A cube with an edge of 1.5 ft has a volume of:
A) 1.2 × 102 m3
B) 9.6 × 10–2 m3
C) 10.5 m3
D) 9.5 × 10–2 m3
E) 0.21 m3
8. There is no SI base unit for area because:
A) an area has no thickness; hence no physical standard can be built
B) we live in a three (not a two) dimensional world
C) it is impossible to express square feet in terms of meters
D) area can be expressed in terms of square meters
E) area is not an important physical quantity
9. Which of the following is closest to a yard in length?
A) 0.01 m
B) 0.1 m
C) 1 m
D) 100 m
E) 1000 m
10. A marble has a radius of 2 mm. The order of magnitude of the number of these marbles
that can be placed in a jar with a radius of 3 cm and a height of 10 cm is:
A) 10
B) 102
C) 104
D) 106
E) 198
11. 5.0 × 104 × 3.0 × 106 =
A) 1.5 × 109
B) 1.5 × 1010
C) 1.5 × 1011
D) 1.5 × 1012
E) 1.5 × 1013
12. The number of significant figures in 15.0 is:
A) 1
B) 2
C) 3
D) 4
E) 5
13. 1.513 + 27.3 =
A) 29
B) 28.8
C) 28.9
D) 28.81
E) 28.813
14. The order of magnitude of the number 0.0649 is:
A) –2
B) 6 × 10–2
C) 10–2
D) 10–1
E) 0.06
15. 5.0 × 105 + 3.0 × 106 =
A) 8.0 × 105
B) 8.0 × 106
C) 5.3 × 105
D) 3.5 × 105
E) 3.5 × 106
16. A cubic box with an edge of exactly 1 cm has a volume of:
A) 10–9 m3
B) 10–6 m3
C) 10–3 m3
D) 103 m3
E) 106 m3
17. A right circular cylinder with a radius of 2.3 cm and a height of 1.4 m has a volume of:
A) 0.20 m3
B) 0.14 m3
C) 9.3 × 10–3 m3
D) 2.3 × 10–3 m3
E) 7.4 × 10–4 m3
18. A nanosecond is:
A) 109 s
B) 10–9 s
C) 10–10 s
D) 10–10 s
E) 10–12 s
19. The SI base unit for mass is:
A) gram
B) pound
C) kilogram
D) ounce
E) kilopound
20. 1 mi is equivalent to 1609 m so 55 mph is:
A) 15 m/s
B) 25 m/s
C) 66 m/s
D) 88 m/s
