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Sati [7]
3 years ago
10

2. An earthquake travels at 3.8 km/s and has a wavelength of 480 m. What is the frequency of the earthquake?

Physics
1 answer:
babunello [35]3 years ago
4 0

Answer:

7.9

Explanation:

speed = 3.8

speed = frequency * wavelength

frequency = \frac{speed}{wavelength} =  \frac{3.8 * 1000}{480} = 7.9

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3 years ago
A cord of mass 0.65 kg is stretched between two supports 8.0 m apart. If the tension in the cord is 120 N, how long will it take
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The time taken by the pulse to travel from one support to the other is 0.208 s.

<h3>Given:</h3>

The mass of the cord is m = 0.65 kg.

The distance between the supports is, d = 8.0 m.

The tension in the cord is T = 120 N.

The time taken by the pulse to travel from one support to the other is given as,

v=\frac{d}{t}

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t=\frac{8}{38.43}

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