Who will hear the voice of a singer first- a person in the balcony 50.0 m away from the stage, or a person 3000 km away at home whose ear is next to the radio? How much sooner? Assume that the microphone is a few centimeters from the singer and the temperature is 20 degree Celcius.

Answer 1

Figure the time by using velocity (of light, and then sound).

Answer 2

i didn't get u by figuring time by using velocity of sound.
What is the velocity of sound.