QUESTION IN SOUND CHAPTER
A boy fires a gun and hears an echo 3 seconds later, if he is 495 m away from a wall. Calculate the velocity of sound.
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A boy fires a gun and hears the echo 2 seconds later. if he is 350m away from a wall, calculate the velocity of sound in air
Echo after 2second
so 350 multiply by 2=700
Speed = Distance ÷ Time
700 ÷ 2 = 350ms
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