Advertisements
Advertisements
Question
A boy on a hill A fires a gun. The other boy on hill B hears the sound after 4 s. If the speed of sound is 330 m s-1, find the distance between the two hills.
Advertisements
Solution
Speed, v = 330 m s-1
t = 4s
Distances = v × t
= 330 × 4s
= 1320 m
APPEARS IN
RELATED QUESTIONS
Describe an experiment to show that sound can travel in a solid.
What is the speed of sound :
(a) in air?
(b) in water?
(c) in iron?
What name is given to those aircrafts which fly at speeds greater than the speed of sound?
A sound signal of 128 vibrations per second has a wavelength of 2.7 m. Calculate the speed with which the wave travels.
The drawing shows a ship 800 m from a cliff. A gun is fixed on the ship. After 5 seconds the people at the front of the ship hear the sound of the gun again.
(a) What is the name of this effect ?
(b) What happens to the sound at the cliff ?
(c) How far does the sound travel in 5 seconds ?
(d) Calculate the speed of sound.
The incidence of ______ in daily life shows that the velocity of sound is less than the velocity of light.
The speed of sound in air at 0°C is 332 m/s. If it increases at the rate of 0.6 m/s per degree, what will be the temperature when the velocity has increased to 344 m/s?
The velocity of sound is independent of temperature.
The propagating disturbance that travels in a medium is called a ______.
The speed of sound in a gaseous medium depends on the nature of the gas.
