2 years ago

Some waves can only travel through matter. What is this matter called?

1 answer:

6 0

A water wave is an example of a mechanical wave. A wave that can travel only through matter is called a mechanical wave.

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- latent heat is released

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2 years ago

A low C (f=65Hz) is sounded on a piano. If the length of the piano wire is 2.0 m and

WITCHER [35]

Answer:

T = 676 N

Explanation:

Given that: f = 65 Hz, L = 2.0 m, and ρ = 5.0 g $/m^{2}$ = 0.005 kg

A stationary wave that is set up in the string has a frequency of;

f = $\frac{1}{2L}$ $\sqrt{\frac{T}{M} }$

⇒ T = 4 $L^{2}$ $f^{2}$ M

Where: t is the tension in the wire, L is the length of the wire, f is the frequency of the waves produced by the wire and M is the mass per unit length of the wire.

But M = L × ρ = (2 × 0.005) = 0.01 kg/m

T = 4 × $2^{2}$ × $65^{2}$ × 0.01

= 4 × 4 ×4225 × 0.01

= 676 N

Tension of the wire is 676 N.

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3 years ago