An ambulance is traveling north at 60.3 m/s, approaching a car that is also traveling north at 33.4 m/s. The ambulance driver hears his siren at a frequency of 696 Hz. Ambulance 60.3 m/s 33.4 m/s Car What is the wavelength at any position in front of the ambulance for the sound from the ambulance’s siren? The velocity of sound in air is 343 m/s. Answer in units of m.

0.44999 m

Explanation:

f = Actual wavelength = 696 Hz

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

= Velocity of observer = 33.4 m/s

= Velocity of source = 60.3 m/s

From Doppler's effect we have

Wavelength is given by

The wavelength at any position in front of the ambulance for the sound from the ambulance’s siren is 0.44999 m.

when jerome paddle in flowing river towards east the net speed of jerome will increase

so the net speed of jerome will be given as

now the speed of paul will be same as it is given as he is running on the ground

so

so here we can say since the speed of jerome is more so he will win the race

now as we know the distance so the time difference is given as

so jerome will reach first and the time difference will be 203.55 s or 3.4 min