Discuss the below:
'Doppler effect'
Q: A truck is moving at 50 m/sec while its horn emits a steady note at 280 cy/sec.
A woman is stationary, 150 meters ahead of the truck.
A man is in a car, 200 meters ahead of the truck, moving toward the truck at a speed of 30 m/sec. The speed of the sound is 345 m/sec.
a. Find the frequency heard by the woman.
b. Find the frequency heard by the man in the car.
c. Find the wavelength of the sound ahead of the moving truck.
d. Find the period of the sound heard by the man.