Question 1

The number 0.003010 has

Accepted Answer

A)   7 significant figures.
B)   6 significant figures.
C)   4 significant figures.
D)   2 significant figures.

Question 2

Approximately how many times does an average human heart beat in a year?

Accepted Answer

A)   4 × 105
B)   4 × 106
C)   4 × 107
D)   4 × 108
E)   4 × 109

Question 3

Express (4.3 × 106) -1/2 in scientific notation.

Accepted Answer

A)   4.8 × 10-4
B)   2.1 × 103
C)   2.1 × 10-5
D)   2.1 × 104 A

Question 4

If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is

Accepted Answer

A)   less than 6.5.
B)   greater than 6.5.

Question 5

What is  to the proper number of significant figures?

Accepted Answer

A)   0.91
B)   0.911
C)   0.9108
D)   0.9

Question 6

The following exact conversion equivalents are given: 1 m = 100 cm, 1 in = 2.54 cm, and 1 ft = 12 in. If a computer screen has an area of 1.27 ft2, this area is closest to

Accepted Answer

A)   0.00284 m2.
B)   0.0465 m2.
C)   0.118 m2.
D)   0.284 m2.
E)   4.65 m2.

Question 7

What is the sum of 1123 and 10.3 written with the correct number of significant figures?

Accepted Answer

A)   1.13 × 103
B)   1133.3000
C)   1.1 × 103
D)   1133.3
E)   1133

Question 8

A weight lifter can bench press 171 kg. How many milligrams (mg)  is this?

Accepted Answer

A)   1.71 × 108 mg
B)   1.71 × 109 mg
C)   1.71 × 107 mg
D)   1.71 × 106 mg

Question 9

In addition to 1 m = 39.37 in., the following exact conversion equivalents are given:
1 mile = 5280 ft, 1 ft = 12 in, 1 hour = 60 min, 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

Accepted Answer

A)   3.8 m/s.
B)   3.0 m/s.
C)   3.4 m/s.
D)   4.1 m/s.
E)   4.5 m/s.

Question 10

Approximately how many pennies would you have to stack to reach an average 8-foot ceiling?

Accepted Answer

A)   2 × 102
B)   2 × 103
C)   2 × 104
D)   2 × 105
E)   2 x 106

Question 11

How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 x 107 calculations per second?

Accepted Answer

A)   15 ns
B)   67 ns
C)   11 ns
D)   65 ns A

Question 12

A marathon is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride.

Accepted Answer

A)   4.5 × 104 strides
B)   4.5 × 103 strides
C)   4.5 × 105 strides
D)   4.5 × 106 strides

Question 13

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

Accepted Answer

A)   0.7 m2.
B)   0.68 m2.
C)   0.682 m2.
D)   0.6818 m2.
E)   0.68175 m2. C

Question 14

A person on a diet loses 1.6 kg in a week. How many micrograms/second (µg/s)  are lost?

Accepted Answer

A)   2.6 × 103 μg/s
B)   1.6 × 105 μg/s
C)   44 μg/s
D)   6.4 × 104 μg/s

Question 15

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.

Accepted Answer

A) True 
 B)False

Question 16

The mass of a typical adult woman is closest to

Accepted Answer

A)   20 kg.
B)   35 kg.
C)   75 kg.
D)   150 kg.

Question 17

What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures?

Accepted Answer

A)   4.1656 × 10-1
B)   4.166 × 10-1
C)   4.17 × 10-1
D)   4.2 × 10-1
E)   4 × 10-1

Question 18

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 92 meters. How many square alberts is equal to one acre? (1 acre = 43,560 ft2 = 4050 m2)

Accepted Answer

Question 19

What is 0.2052/3, expressed to the proper number of significant figures?

Accepted Answer

A)   0.348
B)   0.35
C)   0.3
D)   0.3477

Question 20

What is the sum of 1.53 + 2.786 + 3.3 written with the correct number of significant figures?

Accepted Answer

A)   8
B)   7.6
C)   7.62
D)   7.616
E)   7.6160

Exam 1: Concepts of Motion

The number 0.003010 has

Correct AnswerverifiedShow Answer

Approximately how many times does an average human heart beat in a year?

Correct AnswerverifiedShow Answer

Express (4.3 × 106) -1/2 in scientific notation.

Correct AnswerverifiedA

If a flower is 6.5 cm wide, its width expressed in millimeters is x mm, where x is

Correct AnswerverifiedShow Answer

What is to the proper number of significant figures?

Correct AnswerverifiedShow Answer

The following exact conversion equivalents are given: 1 m = 100 cm, 1 in = 2.54 cm, and 1 ft = 12 in. If a computer screen has an area of 1.27 ft2, this area is closest to

Correct AnswerverifiedShow Answer

What is the sum of 1123 and 10.3 written with the correct number of significant figures?

Correct AnswerverifiedShow Answer

A weight lifter can bench press 171 kg. How many milligrams (mg) is this?

Correct AnswerverifiedShow Answer

In addition to 1 m = 39.37 in., the following exact conversion equivalents are given: 1 mile = 5280 ft, 1 ft = 12 in, 1 hour = 60 min, 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

Correct AnswerverifiedShow Answer

Approximately how many pennies would you have to stack to reach an average 8-foot ceiling?

Correct AnswerverifiedShow Answer

How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 x 107 calculations per second?

Correct AnswerverifiedA

A marathon is 26 mi and 385 yd long. Estimate how many strides would be required to run a marathon. Assume a reasonable value for the average number of feet/stride.

Correct AnswerverifiedShow Answer

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

Correct AnswerverifiedC

A person on a diet loses 1.6 kg in a week. How many micrograms/second (µg/s) are lost?

Correct AnswerverifiedShow Answer

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.

Correct AnswerverifiedShow Answer

The mass of a typical adult woman is closest to

Correct AnswerverifiedShow Answer

What is the result of 1.58 ÷ 3.793 written with the correct number of significant figures?

Correct AnswerverifiedShow Answer

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 92 meters. How many square alberts is equal to one acre? (1 acre = 43,560 ft2 = 4050 m2)

Correct AnswerverifiedShow Answer

What is 0.2052/3, expressed to the proper number of significant figures?

Correct AnswerverifiedShow Answer

What is the sum of 1.53 + 2.786 + 3.3 written with the correct number of significant figures?

Correct AnswerverifiedShow Answer

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Express (4.3 × 10⁶) ^-1/2 in scientific notation.

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A

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The following exact conversion equivalents are given: 1 m = 100 cm, 1 in = 2.54 cm, and 1 ft = 12 in. If a computer screen has an area of 1.27 ft², this area is closest to

Correct Answer
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Correct Answer
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How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 x 10⁷ calculations per second?

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A

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C

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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 92 meters. How many square alberts is equal to one acre? (1 acre = 43,560 ft² = 4050 m²)

Correct Answer
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What is 0.205^2/3, expressed to the proper number of significant figures?

Correct Answer
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