How far from a chef should a boy stand in order to hear the echo of his clap 0.6seconds later ? (Speed of sound in air =330m/s

The time it takes for the sound of the clap to travel to the chef and back to the boy is 0.6 seconds.

Since the speed of sound in air is 330m/s, the total distance traveled by the sound is equal to 330m/s * 0.6s = 198m.

Therefore, the boy should stand 198 meters away from the chef in order to hear the echo of his clap 0.6 seconds later.