A train travelling at 30m/s , approaching a stationary observer emits a tone at a frequency of 480Hz. If the speed of sound is 330m/s, determine the frequency of the note the observer hears.


Question and Answers Forum

All Questions Topic List
Oscillation and Waves Questions
Previous in All Question Next in All Question
Previous in Oscillation and Waves Next in Oscillation and Waves
Question Number 35881 by NECx last updated on 25/May/18

$A t r a i n t r a v e l l i n g a t 30 m / s,$ $a p p r o a c h i n g a s t a t i o n a r y o b s e r v e r$ $e m i t s a t o n e a t a f r e q u e n c y o f 480 H z .$ $I f t h e s p e e d o f s o u n d i s 330 m / s,$ $d e t e r m i n e t h e f r e q u e n c y o f t h e$ $n o t e t h e o b s e r v e r h e a r s .$
Commented by tanmay.chaudhury50@gmail.com last updated on 25/May/18

	Answered by tanmay.chaudhury50@gmail.com last updated on 25/May/18

	$f^{^{'}} = f \frac{v}{v - v_{s}} = 480 \times \frac{330}{330 - 30}$ $f^{'} = \frac{480 \times 330}{300}$ $= 48 \times 11 = 528$
	Commented by NECx last updated on 28/May/18

	$T h a n k y o u T a n m a y s i r$
Terms of Service
Privacy Policy
Contact: info@tinkutara.com

Question and Answers Forum