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MULTIPLE CHOICE.
Choose the one alternative that best completes the statement or answers
the question.
1)
The current definition of the standard meter of length is
based on
1)
_______
A)
the length of a particular object kept in France.
B)
the distance traveled by light in a vacuum.
C)
the distance between the earth's equator and north pole.
D)
the distance between the earth and the sun.
2)
The current definition of the standard second of time is
based on
2)
_______
A)
the oscillation of a particular pendulum kept in France.
B)
the duration of one year.
C)
the frequency of radiation emitted by cesium atoms.
D)
the earth's rotation rate.
3)
The current definition of the standard kilogram of mass is
based on
3)
_______
A)
the mass of the sun.
B)
the mass a particular object kept in France.
C)
the mass of the earth.
D)
the mass of a cesium-133 atom.
4)
If a woman weighs 125 lb, her mass expressed in kilograms
is x kg, where x is
4)
_______
A)
greater than 125.
B)
less than 125.
5)
If a tree is 15 m tall, its height expressed in feet is x
ft, where x is
5)
_______
A)
greater than 15.
B)
less than 15.
6)
If a flower is 6.5 cm wide, its width expressed in
millimeters is x mm, where x is
6)
_______
A)
less than 6.5.
B)
greater than 6.5.
7)
If an operatic aria lasts for 5.75 min, its length
expressed in seconds is x s, where x is
7)
_______
A)
less than 5.75.
B)
greater than 5.75.
8)
Scientists use the metric system chiefly because it is more
accurate than the English system.
8)
_______
A)
True
B)
False
9)
When adding two numbers, the number of significant figures
in the sum is equal to the number of significant figures in the least accurate
of the numbers being added.
9)
_______
A)
True
B)
False
10)
When determining the number of significant figures in a
number, zeroes to the left of the decimal point are never counted.
10)
______
A)
True
B)
False
11)
Convert 1.2 × 10-3 to decimal notation.
11)
______
A)
1.200
B)
0.1200
C)
0.0120
D)
0.0012
E)
0.00012
12)
Write out the number 7.35 × 10-5 in full with a decimal point and correct
number of zeros.
12)
______
A)
0.00000735
B)
0.0000735
C)
0.000735
D)
0.00735
E)
0.0735
13)
0.0001776 can also be expressed as
13)
______
A)
1.776 × 10-3.
B)
1.776 × 10-4.
C)
17.72 × 104.
D)
1772 × .
E)
177.2 × 107.
14)
0.00325
× 10-8 cm can also be expressed in mm as
14)
______
A)
3.25
× 10-12 mm.
B)
3.25
× 10-11 mm.
C)
3.25
× 10-10 mm.
D)
3.25
× 10-9 mm.
E)
3.25
× 10-8 mm.
15)
If, in a parallel universe, π has the value 3.14149,
express π in that universe to four significant figures.
15)
______
A)
3.141
B)
3.142
C)
3.1415
D)
3.1414
16)
The number 0.003010 has
16)
______
A)
7 significant figures.
B)
6 significant figures.
C)
4 significant figures.
D)
2 significant figures.
17)
What is to the proper number of significant figures?
17)
______
A)
0.9108
B)
0.9
C)
0.911
D)
0.91
18)
What is the value of π(8.104)2, written with the correct number of
significant figures?
18)
______
A)
206.324
B)
206.323
C)
206.3
D)
206
E)
200
19)
What is the sum of 1123 and 10.3 written with the correct
number of significant figures?
19)
______
A)
1133.3000
B)
1.13 × 103
C)
1.1 × 103
D)
1133
E)
1133.3
20)
What is the sum of 1.53 + 2.786 + 3.3 written with the correct number of
significant figures?
20)
______
A)
8
B)
7.6
C)
7.62
D)
7.616
E)
7.6160
21)
What is the difference between 103.5 and 102.24 written
with the correct number of significant figures?
21)
______
A)
1
B)
1.3
C)
1.26
D)
1.260
E)
1.2600
22)
What is the product of 11.24 and 1.95 written with the
correct number of significant figures?
22)
______
A)
22
B)
21.9
C)
21.92
D)
21.918
E)
21.9180
23)
What is the result of 1.58 ÷ 3.793 written with the correct number of
significant figures?
23)
______
A)
4.17 ×
B)
4 ×
C)
4.166 ×
D)
4.1656 ×
E)
4.2 ×
24)
What is 34 + (3) × (1.2465) written with the correct number of significant
figures?
24)
______
A)
38
B)
37.7395
C)
37.7
D)
4 × 101
E)
37.74
25)
What is 56 + (32.00)/(1.2465 + 3.45) written with the correct number of significant figures?
25)
______
A)
62.81
B)
63
C)
62.8123846
D)
62.812
E)
62.8
26)
Add and and express your answer in milligrams (mg).
26)
______
A)
7.05 × 107 mg
B)
7.05 × 106 mg
C)
7.05 × 105 mg
D)
7.05 × 104 mg
27)
Express (4.3 × 106)-1/2 in scientific notation.
27)
______
A)
2.1 × 103
B)
2.1 × 10-5
C)
4.8 × 10-4
D)
2.1 × 104
28)
What is 0.2052/3, expressed to the proper number of significant
figures?
28)
______
A)
0.3
B)
0.3477
C)
0.35
D)
0.348
29)
The
length and width of a rectangle are 1.125 m and 0.606 m, respectively. Multiplying, your calculator gives the
product as 0.68175. Rounding properly to
the correct number of significant figures, the area should be written as
29)
______
A)
0.7
m2.
B)
0.68
m2.
C)
0.682
m2.
D)
0.6818
m2.
E)
0.68175
m2.
30)
The following exact conversion equivalents are given: 1 m = 100 cm , 1 in
= 2.54
cm, and If a computer screen has an area of 1.27 , this area is closest to
30)
______
A)
0.118 .
B)
0.284 .
C)
4.65 .
D)
0.0465 .
E)
0.00284 .
31)
In addition to 1 m = 39.37 in., the following exact
conversion equivalents are given: and 1 min = 60 s.
If a particle has a velocity of 8.4 miles per hour,its velocity, in m/s,
is closest to
31)
______
A)
3.8 m/s.
B)
4.5 m/s.
C)
4.1 m/s.
D)
3.0 m/s.
E)
3.4 m/s.
32)
A weight lifter can bench press How many milligrams (mg) is this?
32)
______
A)
1.71 × 108 mg
B)
1.71 × 109 mg
C)
1.71 × 107 mg
D)
1.71 × 106 mg
33)
How many nanoseconds does it take for a computer to perform
one calculation if it performs calculations per second?
33)
______
A)
65 ns
B)
67 ns
C)
11 ns
D)
15 ns
34)
The shortest wavelength of visible light is approximately
400 nm. Express this wavelength in
centimeters.
34)
______
A)
4 × 10-11 cm
B)
4 × 10-7 cm
C)
4 × 10-5 cm
D)
400 × 10-11 cm
E)
4 × 10-9 cm
35)
The wavelength of a certain laser is where Express this wavelength in nanometers.
35)
______
A)
3.5 × 101 nm
B)
3.5 × 102 nm
C)
3.5 × 104 nm
D)
3.5 × 103 nm
36)
A certain CD-ROM disk can store approximately 6.0 × 102 megabytes of information, where 106 bytes = 1 megabyte. If an average word requires 9.0 bytes of
storage, how many words can be stored on one disk?
36)
______
A)
5.4 × 109 words
B)
2.1 × 107 words
C)
6.7 × 107 words
D)
2.0 × 109 words
37)
A plot of land contains How many square meters does it contain?
37)
______
A)
2.3 × 104 m2
B)
5.0 × 104 m2
C)
7.0 × 104 m2
D)
7.1 × 103 m2
38)
A person on a diet loses in a week. How many are lost?
38)
______
A)
2.6 × 103 μg/s
B)
6.4 × 104 μg/s
C)
44 μg/s
D)
1.6 × 105 μg/s
SHORT ANSWER.
Write the word or phrase that best completes each statement or answers
the question.
39)
Albert uses as his unit of length (for walking to visit his
neighbors or plowing his fields) the albert (A), the distance Albert can throw
a small rock. One albert is How many square alberts is equal to one acre?
(1 acre =
43,560 ft2 = 4050 m2)
39)
_____________
MULTIPLE CHOICE.
Choose the one alternative that best completes the statement or answers
the question.
40)
Convert a speed of 4.50 km/h to units of ft/min. (1.00 m = 3.28 ft)
40)
______
A)
82.3 ft/min
B)
886 ft/min
C)
0.246 ft/min
D)
246 ft/min
E)
165 ft/min
41)
The exhaust fan on a typical kitchen stove pulls 600 CFM
(cubic feet per minute) through the filter. Given that 1.00 in. = 2.54 cm, how
many cubic meters per second does this fan pull?
41)
______
A)
3.05 m3/sec
B)
0.328 m3/sec
C)
32.8 m3/sec
D)
0.283 m3/sec
42)
The mass of a typical adult woman is closest to
42)
______
A)
75 kg.
B)
35 kg.
C)
20 kg.
D)
150 kg.
43)
The height of the ceiling in a typical home, apartment, or
dorm room is closest to
43)
______
A)
100 cm.
B)
200 cm.
C)
400 cm.
D)
500 cm.
44)
Approximately how many times does an average human heart
beat in a year?
44)
______
A)
4 ×
B)
4 ×
C)
4 ×
D)
4 ×
E)
4 ×
45)
Approximately how many times does an average human heart
beat in a lifetime?
45)
______
A)
3 ×
B)
3 ×
C)
3 ×
D)
3 ×
E)
3 ×
46)
Approximately how many pennies would you have to stack to
reach an average 8-foot
ceiling?
46)
______
A)
2 ×
B)
2 ×
C)
2 ×
D)
2 ×
E)
2 x
47)
Estimate the number of times the earth will rotate on its
axis during a human's lifetime.
47)
______
A)
3 ×
B)
3 ×
C)
3 x
D)
3 ×
E)
3 ×
48)
Estimate the number of pennies that would fit in a box one
foot long by one foot wide by one foot tall.
48)
______
A)
5 ×
B)
5 ×
C)
5 ×
D)
5 x
E)
5 ×
49)
A marathon is and long. Estimate how many strides would be
required to run a marathon. Assume a reasonable value for the average number of
49)
______
A)
4.5 × 104 strides
B)
4.5 × 105 strides
C)
4.5 × 103 strides
D)
4.5 × 106 strides
50)
The period of a pendulum is the time it takes the pendulum
to swing back and forth once. If the
only dimensional quantities that the period depends on are the acceleration of
gravity, g, and the length of the pendulum, ℓ, what combination of g
and ℓ
must the period be proportional to?
(Acceleration has SI units of m ∙ s-2.).
50)
______
A)
B)
gℓ2
C)
g/ℓ
D)
gℓ
E)
51)
The speed of a wave pulse on a string depends on the
tension, F, in the string and the mass per unit length, μ, of the
string. Tension has SI units of and the mass per unit length has
SI units of What combination of F and μ
must the speed of the wave be proportional to?
51)
______
A)
B)
C)
F / μ
D)
μ / F
E)
52)
The position x, in meters, of an object is given by
the equation x = A + Bt + Ct2, where t
represents time in seconds. What are the
SI units of A, B, and C?
52)
______
A)
m/s, m/s2, m/s3
B)
m, m/s, m/s2
C)
m, s, s2
D)
m, s, s
E)
m, m, m
1)
B
2)
C
3)
B
4)
B
5)
A
6)
B
7)
B
8)
B
9)
B
10)
B
11)
D
12)
B
13)
B
14)
C
15)
A
16)
C
17)
D
18)
C
19)
D
20)
B
21)
B
22)
B
23)
A
24)
A
25)
B
26)
A
27)
C
28)
D
29)
C
30)
A
31)
A
32)
A
33)
D
34)
C
35)
B
36)
C
37)
A
38)
A
39)
1.29 A2
40)
D
41)
D
42)
A
43)
B
44)
D
45)
C
46)
A
47)
B
48)
B
49)
A
50)
A
51)
C
52)
E
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