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3 years ago

A student observes that it is hard to hear music underwater in a pool. They state that the sound is always muffled. They

Physics

1 answer:

s344n2d4d5 [400]3 years ago

5 0

Answer:

FALSE

Explanation:

The answer is false.

The speed of the sound in water is faster when compared to the speed of sound in air. This is because, the particles in air is loosely packed and are far from each other as compared to water or liquid.

The water particles are close to each other than air particles, so water particles are able to transmit the vibrations of the sound faster than the air particles.

Therefore sound waves travels faster in water than in air.

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A good way to de-magnetize something is to

FromTheMoon [43]

Answer:

B. place it in a magnetic field

8 0

3 years ago

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A car travelling at 20 m/s due north along the highway makes a right turn on to a side road that heads due east. It takes 50 s f

Marrrta [24]

Answer: initial velocity: 20 m/s

time taken to complete the turn: 50s

final velocity: 15 m/s

average acceleration= final velocity-initial velocity/time taken - 0s( 0 is taken here as there was no initial time)

= 15-20/50-0

= -5/50= -0.1 ms^2

3 0

3 years ago

An experiment that produces waves on a string is analyzed, and the experimental value for the wave speed is found to be 66 m/s.

Alexandra [31]

4.8 is the correct answer

7 0

3 years ago

Read 2 more answers

A train moving at 5 m/sec passed a track gang and then accelerated uniformly a rate of 1.2 m/sec/sec for 5 min. How far did the

Amanda [17]

Answer:

S = V0 t + 1/2 a t^2

S = 5 m/s * 300 s + 1/2 * 1.2 m/s * (300 s^2)

S = 1500 m + .6 * 90000 m = 55,500 m

Check: V0 = 5 m/s

V2 = V0 + a t = 5 + 1.2 * 300 = 365 m/s

Vav = (V1 + V2) / 2 = (5 + 365) / 2 = 185 m/s (note uniform motion)

S = 185 * 300 = 55,500 m

We calculated V2 above at 365 m/s the speed after 300 sec

3 0

3 years ago

What is the mass of a stone moving at a speed of 15 m/s and having a monument at 7.1 kg meters per second

adell [148]

Answer:

<h3>The answer is 0.47 kg</h3>

Explanation:

The mass of the object given it's momentum and velocity can be found by using the formula

$m = \frac{p}{v} \\$

where

p is the momentum

v is the velocity

We have

$m = \frac{7.1}{15} \\ = 0.4733333...$

We have the final answer as

Hope this helps you

4 0

3 years ago