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25 December, 17:43

A blue whale makes a call underwater at the same time as an elephant calls on land. How long will it take each of these sounds to travel 3 km

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  1. 25 December, 19:06
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    sound in water=4.3 speed of sound in air ( = 343.2 m/s) at 20 deg. C
  2. 25 December, 21:32
    0
    Of we take sound V as 343m/s the elephant will take 8.75sec.

    and in the water the sound V is 1493m/s the whale will take 2.01sec.
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