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Alja [10]
3 years ago
12

An earthquake in San Francisco produces a wave with a period of 0.80 seconds and a wavelength of 40 m., How long will it take fo

r this earthquake to reach Los Angeles if the displacement between these cities is 560 km? A) 3.11 Hrs B) 1.2 hrs C) 42 minutes D) 11.2 seconds
Physics
1 answer:
gtnhenbr [62]3 years ago
4 0

Answer:

A) 3.11 Hrs

Explanation:

Wave speed is given by the formula

Speed = \frac{wavelength}{Time\: period}

now we will have

speed = \frac{40}{0.80}

v = 50 m/s

now the time taken by the wave to move the distance 560 km is given as

t = \frac{distance}{speed}

t = \frac{560\times 10^3}{50}

t = 11200 s

t = 3.11 hours

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