Acelebrity holds a press conference, which is televised
live. a television viewer hears the sound picked up by
microphonedirectly in front of the celebrity. this viewer is seated
2.3m fromthe television set. a reporter at the press conference is
located4.1m away from the microphone and hears the words directly
at thevery same instant that the television viewer hears them.
using avalue of 343m/s for the speed of sound, determine the
maximumdistanced between the television viewer and celebrity.

The maximum distanced between the television viewer and celebrity is:

3586 km

Explanation:

First, we are going to calculate the time it takes sound to travel from the celebrity to the reporter:

How the sound's speed is 343 m/s, then:

x = vt and  

  Where: x: the distance traveled by the sound

               v: the sound's speed

               t : time    

then

t = 4.1/343 = 0.011953 seconds

This time is the same that the electromagnetic signal takes to travel from the celebrity to the television viewer. Considering that the electromagnetic signal travels to the light's speed and it is:

The maximum distanced between the television viewer and celebrity is:

x = vt

x = (300000km/s)(0.011953s ) = 3586 km

answer: what are you talking about?

explanation:

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.