Question

3.A man standing in front of a large building claps his hands and hears the echo after 2 seconds.
What is the distance of the man from the building? (Given speed of sound in air is 340 m/s.)
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Answer 1

Answer:

340 meters per (one) second, so in two seconds the sound will travel [math]340*2[/math] meters, which is equal to 680.

Now, let’s think about our second statement once again. Since an echo is a sound reflection, the sound has to travel back and forth between the source (the man clapping) and the object it “bounces off”/gets reflected by (the wall of the building). Back and forth meaning, it travels the distance you are looking for two times. So what will we do with the number n of our first step? Divide it by two, so: [math]n/2 = 680/2 = 340[/math].

Answer 2

Answer:

answer is here so please mark me as brainleiast

Explanation:

340