Question 1

While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 56.8 liters of gasoline.What is the average flow rate in liters per minute?

Accepted Answer

To find the average flow rate, we need to divide the total volume of gasoline (56.8 liters) by the time taken (3 minutes):

56.8 L ÷ 3 min = 18.9 L/min

Therefore, the average flow rate is 18.9 liters per minute, which corresponds to choice B.

Question 2

If a wheel, turning at a constant angular speed, makes ten complete revolutions every second, what is the angular speed, in radians per second?

Accepted Answer

The answer of If a wheel, turning at a constant...

Question 3

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.

Accepted Answer

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.

Question 4

A person walks from home to a store with an average speed of 0.91 m/s.When returning home from store, she jogs with an average speed of 1.83 m/s, following her original path.What is the average speed for the round trip?

Accepted Answer

The answer of A person walks from home to a...

Question 5

If a wheel, turning at a constant angular speed, makes 5 complete revolutions every second, what is the angular speed, in revolutions per minute?

Accepted Answer

The answer of If a wheel, turning at a constant...

Question 6

The translational speed of a motorcycle is 32.2 km/h.What is the rotational speed of the 62 cm diameter front wheel?

Accepted Answer

The answer of The translational speed of a motorcycle is...

Question 7

When the "A" string of a properly tuned violin is plucked, it takes  to return to it's starting position.What is the frequency of this oscillation?

Accepted Answer

The answer of When the "A" string of a properly...

Question 8

The speed of sound in air is approximately  .The speed of light in air is approximately  .If 10 seconds elapses between seeing a lightning strike and hearing the thunder, how far away was the lightning strike?

Accepted Answer

The answer of The speed of sound in air is...

Question 9

A car traveling at constant speed as it rounds a curve is not accelerating.

Accepted Answer

Acceleration occurs when there is a change in velocity, which includes changes in speed or direction. A car rounding a curve changes direction, thus it is accelerating even if its speed remains constant.

Question 10

A unit of measure commonly used to quantify liquid flow is gpm.What does gpm stand for?

Accepted Answer

gpm stands for "Gallons per Minute".

Question 11

It takes 10 seconds to fill a 0.95-liter jar with water from your kitchen faucet.What is the flow rate, in liters per minute, from the faucet?

Accepted Answer

The flow rate is calculated by dividing the volume by the time in minutes. 0.95 liters in 10 seconds is equivalent to 5.7 liters per minute (0.95 liters / (10/60) minutes = 5.7 liters/minute).

Question 12

The speed of sound in air is approximately  .The speed of sound in steel is approximately  .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?

Accepted Answer

The answer of The speed of sound in air is...

Question 13

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?

Accepted Answer

We can use the formula for the volume flow rate of a liquid through a pipe:
Q = πr^2v
where Q is the volume flow rate, r is the radius of the pipe (which is half the diameter), and v is the speed of the liquid.
We know that the diameter of the hose is 2.5 cm, so the radius is 1.25 cm (or 0.0125 m).
We also know that it takes 3 minutes to dispense 55 liters of gasoline, which is equivalent to 0.917 liters per second (55 / 60 = 0.917).
So we can plug in the values we know and solve for v:
0.917 = π(0.0125)^2v
v = 0.62 m/s
Therefore, the average speed of the gasoline inside the hose is 0.62 m/s.

Question 14

A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a frequency of  .What is the period of this oscillation?

Accepted Answer

The answer of A certain medical imaging device commonly referred...

Question 15

A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a period of  .What is the frequency of this oscillation?

Accepted Answer

The answer of A certain medical imaging device commonly referred...

Question 16

The speed of sound in air is approximately  .The speed of light in air is approximately  .If a lightning strike occurs three kilometers away, how much time elapses before you hear the thunder?

Accepted Answer

The answer of The speed of sound in air is...

Quiz 8: Time and Time-Related Variables in Engineering

While filling up your car with gasoline, you notice that it takes 3 minutes to dispense 56.8 liters of gasoline.What is the average flow rate in liters per minute?

If a wheel, turning at a constant angular speed, makes ten complete revolutions every second, what is the angular speed, in radians per second?

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 person walks from home to a store with an average speed of 0.91 m/s.When returning home from store, she jogs with an average speed of 1.83 m/s, following her original path.What is the average speed for the round trip?

If a wheel, turning at a constant angular speed, makes 5 complete revolutions every second, what is the angular speed, in revolutions per minute?

The translational speed of a motorcycle is 32.2 km/h.What is the rotational speed of the 62 cm diameter front wheel?

When the "A" string of a properly tuned violin is plucked, it takes to return to it's starting position.What is the frequency of this oscillation?

The speed of sound in air is approximately .The speed of light in air is approximately .If 10 seconds elapses between seeing a lightning strike and hearing the thunder, how far away was the lightning strike?

A car traveling at constant speed as it rounds a curve is not accelerating.

A unit of measure commonly used to quantify liquid flow is gpm.What does gpm stand for?

It takes 10 seconds to fill a 0.95-liter jar with water from your kitchen faucet.What is the flow rate, in liters per minute, from the faucet?

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 certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a frequency of .What is the period of this oscillation?

A certain medical imaging device commonly referred to as "ultrasound" creates sound by oscillating with a period of .What is the frequency of this oscillation?

The speed of sound in air is approximately .The speed of light in air is approximately .If a lightning strike occurs three kilometers away, how much time elapses before you hear the thunder?