11/28/23, 4:32 PM
Assignment Week10: Physics 52A Fall 2023
Assignment Week10
Due Dec 3 at 11:59pm
Allowed Attempts 2
Points 10
Questions 8
Time Limit None
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Attempt History
LATEST
Attempt
Time
Score
Attempt 1
25 minutes
9 out of 10
 Correct answers are hidden.
Score for this attempt: 9 out of 10
Submitted Nov 28 at 4:21pm
This attempt took 25 minutes.
Question 1
1 / 1 pts
The amplitude of two beating waves is described by the equation ψ =
Amod(t)cos (ωavt).
What is the main difference between this equation and the equation of a
simple harmonic oscillator?
The amplitude changes in time
The frequency changes in time
The phase changes in time

No answer text provided.
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Assignment Week10: Physics 52A Fall 2023
Question 2
2 / 2 pts
In Sec. 10.6 of the experiment, your ear simultaneously hears waves from
different sources, so it can hear beats from the two speakers. Suppose
one speaker is driven at 566 Hz and the other at 560 Hz.
What is the beat frequency (in Hz)?
6
12
3
-6
Question 3
2 / 2 pts
In Sec. 10.6 of the experiment, your ear simultaneously hears waves from
different sources, so it can hear beats from the two speakers. Suppose
one speaker is driven at 566 Hz and the other at 560 Hz.
The average frequency (in Hz)?
563
560
566
0
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Assignment Week10: Physics 52A Fall 2023
Question 4
1 / 1 pts
In Sec. 10.6 of the experiment, your ear simultaneously hears waves from
different sources, so it can hear beats from the two speakers. Suppose
one speaker is driven at 566 Hz and the other at 560 Hz.
Do you think the pitch of the waves sounds significantly dif-ferent when
both speakers are on?
no
yes
No answer text provided.
No answer text provided.
Question 5
1 / 1 pts
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11/28/23, 4:32 PM
Assignment Week10: Physics 52A Fall 2023
The figure shows three pairs of polarizers. The double arrow drawn on
each polarizer represents the direction of polarization.
If the incident light is unpolarized, which pair lets the most light pass?
a

b
c
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Assignment Week10: Physics 52A Fall 2023
two or more are the same
Question 6
1 / 1 pts
The figure shows three pairs of polarizers. The double arrow drawn on
each polarizer represents the direction of polarization.

If the incident light is polarized vertically, which pair lets the most light
pass?
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Assignment Week10: Physics 52A Fall 2023
a
b
c
two or more are the same
Question 7
1 / 1 pts
The figure shows three pairs of polarizers. The double arrow drawn on
each polarizer represents the direction of polarization.
If the incident light is polarized horizontally, which pair lets the most light
pass?
c
a
b
two or more are the same
Incorrect
Question 8
0 / 1 pts

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Assignment Week10: Physics 52A Fall 2023
Linearly polarized microwaves with their electric field in the vertical
direction are incident on these three metal polarizers.
Which polarizer lets the most microwave light pass?
c
a
b
two or more are the same
Quiz Score: 9 out of 10

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