A sound travels with a speed of 720 km/hr.The wavelength is given as 0.04 km.
Find the frequency of the wave?
Please give full steps..
Answers
Answered by
2
Speed ⇒ 720 km/hr ⇒ 720000 m/hr
now change it to m/s
⇒ 720000 / 60 x 60
⇒ 720000 / 3600
⇒ 200 m/s
Wavelength ⇒ 0.04 km
now change it to metre
⇒ 0.04 x 1000
⇒ 40m
Speed = Wavelength x Frequency
⇒ 200 m/s = 40m x Frequency
⇒ Frequency = 200 m/s / 40m
= 5 Hz.
now change it to m/s
⇒ 720000 / 60 x 60
⇒ 720000 / 3600
⇒ 200 m/s
Wavelength ⇒ 0.04 km
now change it to metre
⇒ 0.04 x 1000
⇒ 40m
Speed = Wavelength x Frequency
⇒ 200 m/s = 40m x Frequency
⇒ Frequency = 200 m/s / 40m
= 5 Hz.
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Answered by
1
Speed = Wavelength x Frequency
200 m/s = 40m x Frequency
Frequency = 200 m/s / 40m
= 5 Hz.
200 m/s = 40m x Frequency
Frequency = 200 m/s / 40m
= 5 Hz.
mark as brainliest
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but you must briefly answer every question..
really?
thanks
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right answer, but the process incomplete
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