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

the answer to this question is 60 n

d₁ = displacement of tern from arctic to antarctic = 11000 miles

d₂ = displacement of tern from antarctic to arctic =   - 11000 miles

d = total displacement for the journey

total displacement for the journey is given as

d = d₁ + d₂

d = 11000 + (-11000)

d = 0 miles

t₁ = time of travel from arctic to antarctic = 3 months = 3 x 30 days = 90 days

t₂ = time of travel from antarctic to arctic = 3 months = 3 x 30 days = 90 days

t = total time of travel

total time of travel is given as

t = t₁ + t₂

t = 90 + 90

t = 180 days

average velocity is given as

average velocity = total displacement/ total time

v = d/t

v = 0/180

v = 0 miles/day