1. Time is a fundamental dimension and plays an important role in our daily life in describing
events, processes, and many occurrences in our surroundings.
a. True
b. False
2. Most engineering problems may be divided into two broad areas: steady and unsteady.
a. True
b. False
3. The problem is said to be steady when the value of a physical quantity under investigation
changes over time.
a. True
b. False
4. Because it takes the earth 24 hours to complete one revolution about its axis, every 15 degrees
longitude corresponds to 1 hour.
a. True
b. False
5. Period and frequency mean the same thing.
a. True
b. False
6. If you pull a pendulum back and let it go, the time required for it to return to approximately
the same place from which it was released is called
a. the period
b. the frequency
Test Bank Engineering Fundamentals, 5th ed. Chapter 8
c. the natural frequency
d. the amplitude
7. If the pitcher’s mound and home plate are
ft60
apart, how much time (in seconds) does the
batter have to react to a
mph90
fastball?
a. 0.45 seconds
b. 1 second
c. 1.5 seconds
d. 2 seconds
8. A jiffy is the amount of time it takes light to travel one centimeter. If the speed of light is
approximately
s
m
8
103
, how many seconds are in a jiffy?
a.
8
1033.3 −
b.
9
1033.3 −
c.
10
1033.3 −
d.
9. A useful variable of traffic information is density—how many cars occupy a stretch of a
highway.
a. True
b. False
10. A car starting from rest has a constant acceleration of 4 m/s2. How fast will it be going in 5
seconds?
a.
s
m
25.1
b.
s
m
4
c.
s
m
5
Test Bank Engineering Fundamentals, 5th ed. Chapter 8
d.
s
m
20
11. A car starts from rest and 5 seconds later it is going
s
m
20
. What is the car’s average
acceleration?
a.
2
25.1 s
m
b.
2
4s
m
c.
2
5s
m
d.
2
20 s
m
12. A car starting from rest has a constant acceleration of 5 m/s2. How long will it take to reach
a speed of
s
m
20
?
a.
sec25.1
b.
sec4
c.
sec5
d.
sec20
13. A car traveling at constant speed as it rounds a curve is not experiencing angular
acceleration.
a. True
b. False
14. Ten seconds after starting from rest, a motorcycle is moving at 20 m/s. What is the
motorcycle’s acceleration in m/s2? Assume constant acceleration.
a.
2
2s
m
b.
2
4s
m
c.
2
6s
m
Test Bank Engineering Fundamentals, 5th ed. Chapter 8
d.
2
8s
m
15. Comparing speed and velocity,
a. speed is a vector quantity and therefore includes direction.
b. velocity is a vector quantity and therefore includes direction.
c. speed and velocity mean the same thing.
d. none of the above apply.
16. A car travels along a certain road at an average speed of
mph60
and returns along the same
road at an average speed of
mph20
. Calculate the average speed for the round trip.
a.
mph20
b.
mph30
c.
mph40
d.
mph50
e.
mph60
17. A slightly eccentric engineering professor rides a motorcycle whose front wheel has a
diameter of
cm60
. While riding the motorcycle he notices that the front wheel is rotating at
rpm300
. How fast is the motorcycle going?
a. 11 mph
b. 21 mph
c. 31 mph
d. 41 mph
18. A thunderstorm is brewing in the distance. Upon seeing a flash of lightning you begin
counting the seconds until you hear the thunder and notice that it took 5 seconds for the sound of
Test Bank Engineering Fundamentals, 5th ed. Chapter 8
thunder to reach you. Assuming the speed of sound in air to be
s
m
340
, estimate how far away
was the lightning strike?
a. 1 mile
b. 2 miles
c. 5 miles
d. 10 miles
19. When a solar flare occurs, how long does it take before a scientist sees it? (The Earth-Sun
distance is
m
11
105.1
and the speed of light is approximately
)
s
m
8
103
.
a. 8 microseconds
b. 8 milliseconds
c. 8 seconds
d. 8 minutes
20. A unit of measure commonly used to quantify air flow is cfm. What does cfm stand for?
a. Correct Fan Measurement
b. Cubic Fan Measurement
c. Cubic Feet per Minute
21. A unit of measure commonly used to quantify liquid flow is gpm. What does gpm stand for?
a. Global Positioning Mechanism
b. Gallons per Minute
c. Greenhouse Pressure Measurement
22. The speed of sound in air is approximately
s
m
340
. The speed of light in air is approximately
s
m
8
103
. If a lightning strike occurs three kilometers away, how much time elapses before you
hear the thunder?
Test Bank Engineering Fundamentals, 5th ed. Chapter 8
23. The speed of sound in air is approximately
s
m
340
. The speed of sound in steel is
approximately
s
m
5900
. If your friend strikes one end of a steel pipe with a hammer while you
listen at the other end, you will hear two distinct sounds: one traveling through the air and the
other traveling through the steel pipe. If the pipe is 200 meters long, how much time elapses
between the two sounds?
24. The speed of sound in air is approximately
s
m
340
. The speed of light in air is approximately
s
m
8
103
. If 10 seconds elapses between seeing a lightning strike and hearing the thunder, how
far away was the lightning strike?
25. A certain medical imaging device commonly referred to as “ultrasound” creates sound by
oscillating with a period of
s
4.0
. What is the frequency of this oscillation?
26. A certain medical imaging device commonly referred to as “ultrasound” creates sound by
oscillating with a frequency of
MHz5.2
. What is the period of this oscillation?
27. When the “A” string of a properly tuned violin is plucked, it takes
ms27.2
to return to it’s
starting position. What is the frequency of this oscillation?
28. If a wheel, turning at a constant angular speed, makes ten complete revolutions every second,
what is the angular speed, in radians per second?
29. If a wheel, turning at a constant angular speed, makes 5 complete revolutions every second,
what is the angular speed, in revolutions per minute?
30. A person walks from home to a store with an average speed of 3 feet per second. When
returning home from store, she jogs with an average speed of 6 feet per second, following her
original path. What is the average speed for the round trip?
a. 3 feet per second
b. 4 feet per second
c. 4.5 feet per second
d. 6 feet per second
31. A car traveling at constant speed as it rounds a curve is not accelerating.
a. True
b. False
32. While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 15
gallons of gasoline. What is the average flow rate in gpm?
a. 3
b. 5
c. 10
d. 15
33. While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 55 liters
of gasoline through the 2.5 cm diameter hose. What is the average speed, in m/s, of the gasoline
inside the hose?
a. 2.48
b. 0.62
c. 6.2
d. 0.248
34. It takes 10 seconds to fill a one-quart jar with water from your kitchen faucet. What is the
flow rate, in gpm, from the faucet?
a. 1.5
b. 4
c. 10
d. 40
35. Volume flow rate measurements are necessary to determine the amount of water or natural
gas being used by us in our homes during a specific period of time.
a. True
b. False
36. The translational speed of a motorcycle is 20 mph. What is the rotational speed of the 24.4 in
diameter front wheel?
a. 250 rpm
b. 275 rpm
c. 300 rpm
d. 325 rpm