A bat emits a 40 kHz chirp to locate flying insects. If the speed of sound is 340 m/s and a bat hears the echo from the moth after 0.6 secon

Question

A bat emits a 40 kHz chirp to locate flying insects. If the speed of sound is 340 m/s and a bat hears the echo from the moth after 0.6 seconds, then how far away is the moth?

in progress 0
Dâu 5 years 2021-08-10T03:45:27+00:00 1 Answers 33 views 0

Answers ( )

  1. minhkhang
    0
    2021-08-10T03:46:54+00:00
    Reply

    102 m

    Explanation:

    The time 0.6 sec is the time it took for the sound to travel from the bat to the moth and back. So it took 0.3 sec for the sound to reach the moth. From the definition of speed, the distance of the moth d to the bat is given by

    v = d/t —> d = vt = (340 m/s)(0.3 sec) = 102 m

Leave an answer

Browse

Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )