Physics, 10.05.2021 16:20 AquariusOx

Anna was on vacation and came across an echo lake. Wanting to know how far she had to swim to get across the lake to the other side, she yelled across “Hello!”

How wide is the lake if 7 seconds later she heard her own echo? Assume that the temperature is 20 ◦C and the speed of sound is 344 m/s.
Answer in units of m.

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Anna was on vacation and came across an echo lake. Wanting to know how far she had to swim to get...

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