Question

A sound wave has a frequency 2KHz and wavelength 30cm.hoemw long will it take to travel 1.2km?

Answer 1

When the energy of a sound wave is transferred to a particle of a medium and causes it to vibrate and generate hear, the sound wave is A. reflected B. refracted C. absorbed D. transmitted I think it's C. check please
May 15, 2015 by anonymous

physics
the speed of a wave in a 4 m rope is 3.2 m/s. what is the frequency of the vibration required to produce a standing wave pattern with 1 antinode? 2 antinodes? 4 antinodes? please help!!! i don't understand how to do this
January 5, 2015 by Isabelle

Physics
In air, the distance traveled by a sound wave is 140 meters during 400 vibrations. If the frequency of the tuning fork is 500 Hz, find the velocity of sound in air. Here's what I did: Wavelength= 140/400=0.35 So, velocity= 500*0.35= 175 m/s Am I right?
October 1, 2015 by Anonymous

Physics
The following wave function represents a travelling wave: y = 5.35 / [4.95 + (6.55x+2.15 t )2] where y and x are in cm, and t is in seconds.a) What is the maximum displacement of the wave at t = 4.30 s ? b)What is the wave velocity?
January 11, 2011 by Rody

Answer 2

hey friend,

=)frequency of wave(f) =2kHz
= 2000Hz

=) wavelength = 30 cm = 0.3 m

we know that speed if wave :-

=) speed (v) = wavelength × frequency

=). v = 0.3 × 2000

=). v = 600 m/s

now distance travelled =1.2 km

= 1.2 ×1000

= 1200 m

so, time taken(t) = distance/ speed

=). t = 1200/600 = 2 sec

so time taken to travel 1.2 km is 2 second

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Hope it will help u