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konstantin123 [22]

3 years ago

11

Do compressional waves need a medium? If so which one would be the fastest ans slowest medium.

1 answer:

Nastasia [14]3 years ago

5 0

Yes, compression waves need a medium. without a medium there is nothing to compress, hence, no wave. A fast medium like a gas (air) is easy to compress and allows waves to move through it easily. a slow medium, like a liquid, is still pretty fast, but not as fast as air.

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Answer:

The right answer is:

(a) 63.83 kg

(b) 0.725 m/s

Explanation:

The given query seems to be incomplete. Below is the attachment of the full question is attached.

The given values are:

T = 3 sec

k = 280 N/m

(a)

The mass of the string will be:

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or,

⇒ $m=\frac{k T^2}{4 \pi^2}$

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(b)

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then,

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