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svet-max [94.6K]
2 years ago
14

A sound wave passes from air into water and then into steel. With each change in medium, what happens to the speed of the wave?.

Physics
1 answer:
Crank2 years ago
5 0

Answer:

Explanation:

You need to consider the index of refraction.

index of refraction of air: 1.00

index of refraction of water: 1.33

Index of refraction of steel: 2.75681

If the sound wave passed from air into water, it passes from a lower index to a higher index of refraction.

As the wave travels into the more dense medium (higher n), it slows down. Therefore from air to water (lower to higher) it slows down, and from water to steel (n of steel is higher that n of water) therefore it slows down even more.

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If this standing wave is 48.8 meters long from end to end, what is the wavelength?
Mrrafil [7]

The wavelength of a standing wave is 8.13 m.

<h3>What is a wavelength?</h3>

The distance between two successive troughs or crests is known as the wavelength. The peak of the wave is the highest point, while the trough is the lowest.

The wavelength is also defined as the distance between two locations in a wave that have the same oscillation phase.

The given data in the problem is;

String length(L)= 48.8 metere

Wavelength(λ)=?

The length of the wave having n nodes is found as;

L=nλ

Substitute the given value;

48.8 = 6λ

λ= 8.13 m

Hence, the wavelength of a standing wave is 8.13 m.

To learn more about the wavelength, refer to the link;

brainly.com/question/7143261

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6 0
2 years ago
Physics is explicitly involved in studying which of these activities?
Paul [167]
Physics is explicitly involved in studying <span>the motion of a spacecraft under gravitational influence. Thus the answer is C. 
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3 years ago
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babymother [125]
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8 0
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When comparing saturated and naturally occurring unsaturated fats, the unsaturated fats have __________ and are __________ at ro
Len [333]

Answer: have "cis C=C double bonds" and "liquid" at room temperature.

Explanation:

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5 0
4 years ago
4. A truck has four times the mass of a car and is moving with twice the speed of the car.
slamgirl [31]

Answer:

Relation between kinetic energy of truck and kinetic energy of car is given as

K_t = 16 K_c

Explanation:

As we know that mass of truck is four times the mass of car

m_t = 4 m_c

and the speed of truck is double that of speed of car

v_t = 2v_c

now we have kinetic energy of the truck is given as

K_t = \frac{1}{2}m_t v_t^2

similarly kinetic energy of car is given as

K_c = \frac{1}{2}m_cv_c^2

now from above two equations we have

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so we have

K_t = 16 K_c

3 0
4 years ago
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