The echo of your footsteps returns in 0.50 second. How long is the corridor in which you are walking? (Assume the speed of sound for 0°C.)

The corridor is 82.825 meters long

Explanation:

Hi, to answer this question we have to apply the next formula:

d = (t×c)/2  

Where:

Speed of sound c = 331.3 m/s at 0°C  

t = time = 0.5 s.  

d = distance

Replacing with the values given:

d = (Δt×c)/2 = 0.5×331.3/2 = 82.825 m  

The corridor is 82.825 meters long

Feel free to ask for more if needed or if you did not understand something.

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ill do it for 100, also this isnt 80 its 40