Quiz about Spring Semester Exam

Question 1

Which of the following is necessary for light to propagate?

Accepted Answer

None of these are necessary.

Answer

Air

Answer

Ether

Answer

Matter

Question 2

Calculate the speed of a periodic wave that has a wavelength of 2.0 m and a frequency of 3.0 Hz.

Accepted Answer

6.0 m/s

Answer

2.0 m/s

Answer

5.0 m/s

Answer

12.0 m/s

Question 3

As the amplitude of a mechanical wave increases, which of the following quantities increases?

Accepted Answer

Energy

Answer

Speed

Answer

Wavelength

Answer

Frequency

Question 4

What is the wavelength of the wave according to the Displacement v. Length graph above?

Accepted Answer

1.0 m

Answer

0.25 m

Answer

0.5 m

Answer

2.0 m

Question 5

Which of the following properties of a wave cannot be changed by reducing wave velocity?

Accepted Answer

Frequency

Answer

Wavelength

Answer

Amplitude

Answer

Energy

Question 6

A student creates a graph of position v. time for the height of a floating buoy as ocean waves go by. What is the amplitude of the buoy based on the graph above?

Accepted Answer

2.5 m

Answer

2.0 m

Answer

5.0 m

Answer

The amplitude varies depending on the time.

Question 7

What electromagnetic wave travels the fastest?

Accepted Answer

All travel at the speed of light 'c'.

Answer

Microwave

Answer

Ultraviolet

Answer

X-ray

Question 8

A sound wave is propagating through the air from left to right as shown in the diagram below.

Accepted Answer

longitudinal

Answer

electromagnetic

Answer

pulse

Answer

transverse

Question 9

Compare the period of Light Wave A to that of Light Wave B.

Accepted Answer

twice the period of Light Wave B

Answer

one-fourth the period of Light Wave B

Answer

one-half the period of Light Wave B

Answer

the same period as Light Wave B

Question 10

The amplitude of two light waves (Light Wave A and Light Wave B) as a function of time are shown below. Which of the following best describes the relationship between the amplitudes of Light Wave A and Light Wave B?

Accepted Answer

Both waves have the same amplitude.

Answer

Light Wave A has a greater amplitude than Light Wave B.

Answer

Light Wave B has a greater amplitude than Light Wave A.

Answer

The amplitudes of both waves vary randomly.

Question 11

Compare the frequency of Light Wave A to that of Light Wave B.

Accepted Answer

one-half the frequency of Light Wave B

Answer

twice the frequency of Light Wave B

Answer

one-fourth the frequency of Light Wave B

Answer

the same frequency as Light Wave B

Question 12

Sound engineers at an automobile factory plan to design a device that could be used as a type of muffler for road noise. In order to cancel all the exterior noise, they must create what type of interference with the sound waves outside the vehicle?

Accepted Answer

Completely destructive interference

Answer

Completely constructive interference

Answer

Partially constructive interference

Answer

Partially destructive interference

Question 13

The two individual light waves occupy the same space at the same time. Which of the following is the best description of the resultant light wave intensity at t = 1.5 s?

Accepted Answer

The resultant wave has greater intensity than Light Wave B at t = 1.5 s.

Answer

There is no light at t = 1.5 s.

Answer

The resultant wave has a lower intensity than Light Wave B at t = 1.5 s.

Answer

The resultant wave has the same intensity as Light Wave B at t = 1.5 s.

Question 14

Which of the following best describes all magnets found in nature?

Accepted Answer

They have two poles.

Answer

They are made of iron.

Question 15

As the distance increases separating the objects, what will happen to the force?

Accepted Answer

decreases

Answer

stays the same

Answer

increases

Answer

increases on the left one and decreases on the right one

Question 16

Two asteroids exert a gravitational force, F, on each other. Some time later, the asteroids are now three times as far from each other as before. Which of the following represents the gravitational force at this distance?

Accepted Answer

F/9

Answer

F/3

Answer

F

Answer

3F

Question 17

Which is larger, the Sun's gravitational pull on the Earth or Earth's gravitational pull on the Sun?

Accepted Answer

They pull on each other equally

Answer

The Sun's pull on the Earth is larger.

Answer

The Earth's pull on the Sun is larger

Answer

The Sun's pull on the Earth is twice as large as Earth's pull on the Sun.

Question 18

If Earth's mass was cut in half, what would happen to your mass?

Accepted Answer

stay the same

Answer

increase because gravitational force increases

Answer

decrease because gravitational force decreases

Answer

increase because gravitational force decreases

Question 19

Charles de Coulomb measured attractive and repulsive forces caused by charged objects. Which statement is true about the electromagnetic force?

Accepted Answer

The charge and distance between two charged objects both influence the electromagnetic force between the two objects.

Answer

The distance between two charged objects has no effect on the electromagnetic force between the two objects.

Question 20

What is the force between two $$1.0 imes 10^{-5} C$$ charges separated by 2.0 m?

Accepted Answer

0.225 N

Answer

22,500 N

Question 21

Two charged spheres are 20 cm apart and exert an attractive force of 8 x 10^{-9} N on each other. What will the force of attraction be when the spheres are moved to 10 cm apart?

Accepted Answer

3.2 x 10^-8 N

Answer

1.6 x 10^{-8} N

Question 22

During a lab experiment, two identical conducting spheres were charged using a rubber rod and a piece of fur. They were hung from strings as shown in this diagram. What type of charge do the spheres most likely have?

Accepted Answer

Both spheres are negatively charged

Answer

Both spheres are positively charged

Answer

One sphere is positive, the other is negative

Answer

Both spheres are neutral

Question 23

The graphic below illustrates the path of a positively charged particle as it is fired between two plates of unknown charge: Which of the following is the most likely orientation of the plates?

Accepted Answer

Plate A - Negative, Plate B - Positive

Answer

Plate A - Positive, Plate B - Positive

Question 24

In the graphic below, a positive test charge is placed at Point P in the electric field shown. What is the direction of the force experienced by the test charge?

Accepted Answer

To the right

Answer

Upward

Answer

Downward

Answer

To the left

Spring Semester Exam

31 questions

Sound waves travel through water by —

Which of the following is necessary for light to propagate?

Calculate the speed of a periodic wave that has a wavelength of 2.0 m and a frequency of 3.0 Hz.

As the amplitude of a mechanical wave increases, which of the following quantities increases?

What is the wavelength of the wave according to the Displacement v. Length graph above?

Which of the following properties of a wave cannot be changed by reducing wave velocity?

A student creates a graph of position v. time for the height of a floating buoy as ocean waves go by. What is the amplitude of the buoy based on the graph above?

A student creates a graph of position v. time for the height of a floating buoy as ocean waves go by. Refer to the graph above. At what time will the buoy be at a crest?

What electromagnetic wave travels the fastest?

A sound wave is propagating through the air from left to right as shown in the diagram below.

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