Answers

2015-06-30T12:52:58+05:30
The length of Whistle is 15 cm Maybe it can be incorrect
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can u now explain it to me.............
Here in the formula f=v/2l, f is frequency ,l is the length and v is the velocity of sound
apne konsa formula use kia tha ?
Velocity=frequency*Lambda(Wavelength)
ha mene v ese kia tha...........bt mene kavi wo formula use nei kia to problem ho rehi he samajhme nei a raha k uss se kiu nei hoga .........
2015-06-30T17:26:26+05:30
Wavelength of the whistle= \frac{frequency}{2*speed}
= \frac{5100}{68} m
=75 m
=7500 cm
Ans:7500 cm.
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