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Eddi Din [679]
3 years ago
14

Suppose you are swimming underwater in a lake and a sound is made 1,000 meters away from you. How long would it take for the sou

nd waves to reach your ears? Would they reach you faster or slower if you were swimming in the ocean? Why?
Physics
1 answer:
podryga [215]3 years ago
3 0

Answer:

0.667 s; faster in the ocean

Explanation:

Since the sound wave travels with a uniform motion (= at constant velocity), the time it takes to reach your ear will be given by the formula

t=\frac{d}{v}

where

d is the distance it has to cover

v is the speed of the sound wave

Here we have

d = 1000 m is the distance

v = 1500 m/s is the approximate speed of sound in fresh water

Substituting,

t=\frac{1000}{1500}=0.667 s

We also want to compare the time if you are swimming in the ocean.

In the ocean, due to the higher density of the water (because of the presence of the salt), the speed of sound is slightly larger, in fact it is:

v=1531 m/s

Therefore, the time taken in this case will be:

t=\frac{1000}{1531}=0.653 s

Therefore, the sound will reach your ear a bit faster.

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Answer: See the explanation below.

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The individual I demonstrated my project to was [<em>Someone you know</em>], [<em>Pronoun</em>] said it precisely took after the occasion of an eclipse. The light from the sun being shined on to the moon rather than the Earth, creating the shadow we call an eclipse.

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3 years ago
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Hello
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3 years ago
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Tabitha knows the redshift value of a particular celestial object. What can she use this information most directly to find out?
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She can use the information of redshift of a celestial body is to find the age and distance of the object.

<h3>What is red shift?</h3>

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Learn more about red shift.

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#SPJ1

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