Question 380: Waves

Question

The frequency of a tuning fork is $220 \mathrm{~Hz}$ and the velocity of sound in air is $330 \mathrm{~m} / \mathrm{s}$. When the tuning fork completes 80 vibrations, the distance travelled by the

Accepted Answer

$\begin{aligned}
& \mathrm{f}=220 \mathrm{~Hz}, v=330 \mathrm{~m} / \mathrm{s} \
& v=\mathrm{f} \lambda \
& \lambda=\frac{\mathrm{v}}{\mathrm{f}}=\frac{330}{220}=\frac{3}{2} \mathrm{~m}
\end{aligned}$
Distance travel by 80 vibrations is
$80 	imes \frac{3}{2}=120 \mathrm{~m}$

Answer

120 m

Answer

60 m

Answer

53 m

Answer

100 m

Waves

The frequency of a tuning fork is 220 \mathrm{~Hz} and the velocity of sound in air is 330 \mathrm{~m} / \mathrm{s}. When the tuning fork completes 80 vibrations, the distance travelled by the

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