Advertisements
Advertisements
Question
A boy fires a gun and another boy at a distance hears the sound of fire 2.5s after seeing the flash. If the speed of sound in air 340 m/s, find distance between the boys.
Advertisements
Solution
Speed of sound in air (V) = 340 m/s
Time in which sound of fire is heard after flash is seen (t) = 2.5s
Thus, distance between flash and observer = V x t = (340 x 2.5) = 850 m
APPEARS IN
RELATED QUESTIONS
Cite an experiment to show that sound needs a material medium for its propagation.
Can sound travel through a vacuum ? Describe an experiment to explain your answer.
Why cannot a sound be heard on the moon? How do astronauts talk to one another on the surface of moon?
Fill in the blank with suitable word.
Sound cannot travel through ____________.
Answer the following question :
How does the speed of sound differ in different media?
The time interval between a lightning flash and the first sound of thunder was found to be 5 s. If the speed of sound in air is 330 m s-1, find the distance of flash from the observer.
Can we hear sounds of frequencies:
Less than 20 Hz
Sound cannot travel in ______.
In any medium, as the ______ increases, the speed of sound also increases.
The small to and fro motion is called vibration.
