A wave of frequency 200 Hz and wavelength 0.20m is produced on the surface of the moon. Calculate the time after which the person standing 2000m away from the drum hears the sound wave. Answer it so that you have 50 points extra in your account
Answers
Answer:
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Explanation:
As frequency is 200Hz, that means 200 waves are produced on one second.
As frequency is 200Hz, that means 200 waves are produced on one second. So, time taken to produce 150 waves =200150=0.75s
As frequency is 200Hz, that means 200 waves are produced on one second. So, time taken to produce 150 waves =200150=0.75sVelocity of wave = Frequency × Wavelength =200×1580=30000 cmps =300 meters per second
As frequency is 200Hz, that means 200 waves are produced on one second. So, time taken to produce 150 waves =200150=0.75sVelocity of wave = Frequency × Wavelength =200×1580=30000 cmps =300 meters per secondSo, Distance =300×0.75=225cmeters
Velocity = Frequency × Wavelength
= 200 × 0.20
= 40 m/s
Distance = Speed × Time
2000 = 40 × Time
Time = 50 sec
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