An observer is riding a bike with a speed of 5 m/s. The ice cream van emitting a sound with a natural frequency of 600 Hz is coming up from behind the cyclist with a speed of 25 m/s. The siren making the sound is inside the cabin with the ice cream vendor. a) What is the frequency of the sound heard by the ice cream vendor inside the vehicle? b) What is the wavelength of the sound waves as detected by the ice cream vendor inside the vehicle? c) What is the frequency of the sound heard by the cyclist? d) What is the wavelength of the sound waves as detected by the cyclist?
Properties of sound
A sound wave is a mechanical wave (or mechanical vibration) that transit through media such as gas (air), liquid (water), and solid (wood).
Quality Of Sound
A sound or a sound wave is defined as the energy produced due to the vibrations of particles in a medium. When any medium produces a disturbance or vibrations, it causes a movement in the air particles which produces sound waves. Molecules in the air vibrate about a certain average position and create compressions and rarefactions. This is called pitch which is defined as the frequency of sound. The frequency is defined as the number of oscillations in pressure per second.
Categories of Sound Wave
People perceive sound in different ways, like a medico student takes sound as vibration produced by objects reaching the human eardrum. A physicist perceives sound as vibration produced by an object, which produces disturbances in nearby air molecules that travel further. Both of them describe it as vibration generated by an object, the difference is one talks about how it is received and other deals with how it travels and propagates across various mediums.
An observer is riding a bike with a speed of 5 m/s. The ice cream van emitting a sound with a
natural frequency of 600 Hz is coming up from behind the cyclist with a speed of 25 m/s.
The siren making the sound is inside the cabin with the ice cream vendor.
a) What is the frequency of the sound heard by the ice cream vendor inside the vehicle?
b) What is the wavelength of the sound waves as detected by the ice cream vendor inside the
vehicle?
c) What is the frequency of the sound heard by the cyclist?
d) What is the wavelength of the sound waves as detected by the cyclist?
Trending now
This is a popular solution!
Step by step
Solved in 5 steps
