What happens when a sound wave passes from water to air?

2 answers:

6 0

Sound travells much faster in water than in air.

The wave is both reflected and tranmitted. Some goes into the water..and goes FASTER and some bounces back.

s344n2d4d5 [400]2 years ago

4 0

It slows down. The molecules/particles aren't as close together, resulting in slower movement.

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A 1300 kg car traveling with a speed of 3.5 m/s executes a turn with a 8.5 m radius of curvature.

Y_Kistochka [10]

Answer:

1.4 m/s/s (2.s.f)

Explanation:

The formula for centripetal acceleration is:

$a=\frac{v^{2} }{r}$ , where v is velocity and r is the radius.

In the question we are given the information that the car has a mass of 1300kg, a velocity of 2.5m/s, and a turn radius of 8.5m which are all the values we need. Therefore we can simply substitute in the values to solve the question:

$a=\frac{3.5^{2} }{8.5} \\a=1.4$

Therefore the centripetal acceleration of the car is 1.4m/s/s. (2.s.f)

Hope this helped!

7 0

2 years ago

In what setting do all frequencies of electromagnetic waves travel at the same speed?

Irina-Kira [14]

All electromagnetic waves travel in vacuum (space) at the speed of light (3 * 10^8 m/s). Radio waves is just a member of the electromagnetic spectrum. All electromagnetic waves follow the wave equation: speed = frequency * wavelength. With all electromagnetic waves, the speed in space is the same.

6 0

2 years ago

How much force, in g cm/s2

scoray [572]

In this question force is measured in g cm/s2 so we know that to get the answer we times g by cm/s2
50 × 20 = 1000

3 0

3 years ago

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The speed of a wave in a medium is effected by____,____, and____

lisov135 [29]

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