Question 144: Waves

Question

A travelling wave is described by the equation
$$y(x,t) = [0.05\sin (8x - 4t)]$$ m
The velocity of the wave is : [all the quantities are in SI unit]

Accepted Answer

$\because y(x, t)=[0.05 \sin (8 x-4 t)] \mathrm{m}$
$$
\begin{aligned}
	ext { Speed of wave } & =\left|\frac{	ext { Coefficient of } t}{	ext { Coefficient of } x}ight| \\
& =\frac{4}{8}=0.5 \mathrm{~ms}^{-1}
\end{aligned}
$$

Answer

$$\mathrm{4~ms^{-1}}$$

Answer

$$\mathrm{2~ms^{-1}}$$

Answer

$$\mathrm{8~ms^{-1}}$$

Answer

$$\mathrm{0.5~ms^{-1}}$$

Waves

A travelling wave is described by the equation $y(x,t) = [0.05\sin (8x - 4t)]$ m The velocity of the wave is : [all the quantities are in SI unit]

Choose the correct answer: