Question 1

How many nanoseconds does it take for a computer to perform one calculation if it performs 6.7 × 107 calculations per second?
A) 15 ns
B) 67 ns
C) 65 ns
D) 11 ns

Accepted Answer

To find the time it takes for one calculation, divide 1 second (or 1,000,000,000 nanoseconds, since there are 1 billion nanoseconds in a second) by the number of calculations per second. Thus, 1,000,000,000 ns / 6.7 × 10^7 calculations = approximately 15 ns per calculation.

Question 2

What is the product of 11.24 and 1.95 written with the correct number of significant figures?
A) 22
B) 21.9
C) 21.92
D) 21.918
E) 21.9180

Accepted Answer

The product of 11.24 and 1.95 is 21.918, but since the least number of significant figures in the numbers being multiplied is three (in 1.95), the answer should also be reported with three significant figures, making it 21.9.

Question 3

What is 56 + (32.00)/(1.2465 + 3.45) written with the correct number of significant figures?
A) 62.81
B) 62.8123846
C) 62.812
D) 62.8
E) 63

Accepted Answer

The answer of What is 56 + (32.00)/(1.2465 + 3.45)...

Question 4

What is the difference between 103.5 and 102.24 written with the correct number of significant figures?
A) 1
B) 1.3
C) 1.26
D) 1.260
E) 1.2600

Accepted Answer

The answer of What is the difference between 103.5 and...

Question 5

What is 34 + (3) × (1.2465) written with the correct number of significant figures?
A) 38
B) 37.74
C) 37.7395
D) 37.7
E) 4 × 101

Accepted Answer

The answer of What is 34 + (3) × (1.2465)...

Question 6

The mass of a typical adult woman is closest to
A) 35 kg.
B) 150 kg.
C) 75 kg.
D) 20 kg.

Accepted Answer

The average mass of a typical adult woman is closest to 75 kg, which is a common reference for adult human body weight in a healthy range. Options A, B, and D are not typical weights for healthy adults.

Question 7

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

Accepted Answer

To convert 8.4 miles per hour to meters per second, use the given conversion factors: $8.4 \, \text{miles/hour} \times \frac{5280 \, \text{feet}}{1 \, \text{mile}} \times \frac{12 \, \text{inches}}{1 \, \text{foot}} \times \frac{1 \, \text{meter}}{39.37 \, \text{inches}} \times \frac{1 \, \text{hour}}{3600 \, \text{seconds}}$. This calculation results in approximately 3.8 m/s.

Quiz 2: Describing Motion: Kinematics in One Dimension

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

What is the product of 11.24 and 1.95 written with the correct number of significant figures?

What is 56 + (32.00) /(1.2465 + 3.45) written with the correct number of significant figures?

What is the difference between 103.5 and 102.24 written with the correct number of significant figures?

What is 34 + (3) × (1.2465) written with the correct number of significant figures?

The mass of a typical adult woman is closest to

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