k MEASUREMENT
, Chapter 1: k MEASUREMENT
1. The SI standard of time is based on:
k k k k k k k
A. the daily rotation of the earth
k k k k k
B. the frequency of light emitted by Kr86
k k k k k k
C. the yearly revolution of the earth about the sun
k k k k k k k k
D. a precision pendulum clock
k k k
E. none of these k k
Ans: E k k
2. A nanosecond is:
k k
A. 109 s k
B. 10−9 s k
C. 10−10 s k
D. 10−10 s k
E. 10−12
Ans: B k
3. The SI standard of length is based on:
k k k k k k k
A. the distance from the north pole to the equator along a meridian passing through Paris
k k k k k k k k k k k k k k
B. wavelength of light emitted by Hg198 k k k k k
C. wavelength of light emitted by Kr86 k k k k k
D. a precision meter stick in Paris
k k k k k
E. the speed of light k k k
Ans: E k k
4. In 1866, the U. S. Congress defined the U. S. yard as exactly 3600/3937 international
k k k k k k k k k k k k k k
meter. This was done primarily because:
k k k k k k
A. length can be measured more accurately in meters than in yards
k k k k k k k k k k
B. the meter is more stable than the yard
k k k k k k k
C. this definition relates the common U. S. length units to a more widely used system
k k k k k k k k k k k k k k
D. there are more wavelengths in a yard than in a meter
k k k k k k k k k k
E. the members of this Congress were exceptionally intelligent
k k k k k k k
Ans: C k k
5. Which of the following is closest to a yard in length?
k k k k k k k k k k
A. 0.01 m k
B. 0.1m k
C. 1 m k
D. 100 m k
E. 1000 m k
Ans: C k
Ans: B k
2 Chapter 1: k MEASUREMENT
, 6. There is no SI base unit for area because:
k k k k k k k k
A. an area has no thickness; hence no physical standard can be built
k k k k k k k k k k k
B. we live in a three (not a two) dimensional world
k k k k k k k k k
C. it is impossible to express square feet in terms of meters
k k k k k k k k k k
D. area can be expressed in terms of square meters
k k k k k k k k
E. area is not an important physical quantity
k k k k k k
Ans: D
k k
7. The SI base unit for mass is:
k k k k k k
A. gram
B. pound
C. kilogram
D. ounce
E. kilopound
Ans: C
k k
8. A gram is:
k k
A. 10−6 kg k
B. 10−3 kg k
C. 1 kg k
D. 103 kg k
E. 106 kg k
Ans: B k
9. Which of the following weighs about a pound?
k k k k k k k
A. 0.05 kg k
B. 0.5 kg k
C. 5 kg k
D. 50 kg k
E. 500 kg k
Ans: D k
10. (5.0 × 104) × (3.0 × 106) =
k k k k k k k k
A. 1.5 × 109 k k
B. 1.5 × 1010 k k
C. 1.5 × 1011 k k
D. 1.5 × 1012 k k
E. 1.5 × 1013 k k
Ans: C k
11. (5.0 × 104) × (3.0 × 10−6) =
k k k k k k k k
A. 1.5 × 10−3 k k
B. 1.5 × 10−1 k k
C. 1.5 × 101 k k
D. 1.5 × 103 k k
E. 1.5 × 105 k k
Chapter 1:
k MEASUREMENT
, 12. 5.0 × 105 + 3.0 × 106 =
k k k k k k k
A. 8.0 × 105 k k
B. 8.0 × 106 k k
C. 5.3 × 105 k k
D. 3.5 × 105 k k
E. 3.5 × 106 k k
Ans: E k
13. (7.0 × 106)/(2.0 × 10−6) =
k k k k k k
A. 3.5 × 10−12 k k
B. 3.5 × 10−6 k k
C. 3.5
D. 3.5 × 106 k k
E. 3.5 × 1012 k k
Ans: E k
14. The number of significant figures in 0.00150 is:
k k k k k k k
A. 2
k k
B. 3
k k
C. 4
k k
D. 5
k k
E. 6
k k
Ans: B k
15. The number of significant figures in 15.0 is:
k k k k k k k
A. 1
k k
B. 2
k k
C. 3
k k
D. 4
k k
E. 5
k k
Ans: C k
16. 3.2 k × 2.7 = k k k
A. 9
B. 8
C. 8.6
D. 8.64
E. 8.640
Ans: C k
Ans: B k
2 Chapter 1: k MEASUREMENT