Advertisements
Advertisements
Question
Numerical problem.
A stone is dropped from the top of a tower 750 m high into a pond of water at the base of the tower. Calculate the number of seconds for the splash to be heard? (Given g = 10 m s–2 and speed of sound = 340 m s–1)
Advertisements
Solution
(Given g = 10 m s– 2 and speed of sound = 340 ms– 1)
Height = 750m
h = ut + 0.5 gt2
The initial velocity is 0
750 = 0.5 × 10 × t2
t = 10sec
Speed of sound is `(340"m")/"sec"`
So, time taken to travel 750m upwards is,
`750/340"` = 2.20s
time taken = 10 + 2.20 = 12.2 sec.
APPEARS IN
RELATED QUESTIONS
Write the approximate speed of sound in air.
Guess which sound has a higher pitch:
What is the time-period of a tuning fork whose frequency is 200 Hz?
Helium gas is filled in two identical bottles A and B. The mass of the gas in the two bottles is 10 gm and 40 gm respectively. If the speed of sound is the same in both bottles, what conclusions will you draw?
Write the formula for speed of sound in a gas using Laplace correction.
The Velocity of sound is high in gases than liquids.
Why does sound travel faster on a rainy day than on a dry day?
Air temperature in the Rajasthan desert can reach 46°C. What is the velocity of sound in air at that temperature? (V0= 331 ms–1)
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.
