Answer:
Explanation:
The sound intensity level β can be mathematically defined as
where is the reference intensity and is equal to
.
Now,
Clarisse had three substances. A white substance was waxy and malleable. A red crystal was translucent, and it cracked when she
hit it with a hammer. A silver substance could be flatten by hitting it with a hammer, but it did not crack. Which two statements could be true?
2 answers:
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Answer:
the phase difference is 1.26 radian
Solution:
As per the question:
Distance, d = 2 m
Distance from the other speaker, d' = 2.1 m
Frequency, f = 680 Hz
Speed of sound, v = 340 m/s
Now,
To calculate the phase difference, :
Path difference,
For the wavelength:
where
c = speed of light in vacuum
= wavelength
Now,
Now,
Phase difference,