Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far away was the

Question

Sound travels through air at 343 m/s at 20 °C. A bat emits an ultrasonic squeak and hears the echo 0.05 second later . How far away was the object that reflected it?

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Hải Đăng 5 months 2021-08-04T07:18:22+00:00 1 Answers 6 views 0

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    2021-08-04T07:19:38+00:00

    Answer:

    Distance of the object is 8.6 m

    Explanation:

    As we know that the speed of sound at t degree C is given as

    v = 332 + 0.6 t

    here we know that the temperature is

    t = 20 degree C

    so we have

    v = 332 + 0.6(20)

    v = 344 m/s

    now we know that bat heard the echo of sound in 0.05 s

    so the to and fro distance of the object is d + d = 2d

    so we have

    2 d = v\times t

    2d = 344(0.05)

    d = 8.6 m

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