Question 145: Waves

Question

In the wave equation
$$
y=0.5 \sin \frac{2 \pi}{\lambda}(400 \mathrm{t}-x) \,\mathrm{m}
$$
the velocity of the wave will be:

Accepted Answer

$${v_{wave}} = \left| {{{coefficient\,of\,t} \over {coefficient\,of\,x}}} \right|$$
$$ = {{400} \over 1} = 400$$ m/s

Answer

200 m/s

Answer

200$$\sqrt2$$ m/s

Answer

400 m/s

Answer

400$$\sqrt2$$ m/s

Waves