Hearing the siren of an approaching fire truck, you pull over to side of the road and stop. as the truck approaches, you hear a tone of 460 hz; as the truck recedes, you hear a tone of 410 hz. how much time will it take to jet from your position to the fire 5.00 km away, assuming it maintains a constant speed?

253.65259 seconds

Explanation:

f' = Approaching frequency = 460 Hz

f = Receding frequency = 410 Hz

v = Speed of sound in air = 343 m/s

v' = Speed of truck

Doppler effect

The distance is 5 km

Time = Distance / Speed

Time will it take to hear the jet from your position is 253.65259 seconds

temp rises, and expansion

statement #3 on andre"s list is false.