Question

The equation of a wave traveling in a horizontal direction is expressed as y - 5sin(60t - x)

What's the phase angle

(a)90° (b)180° (c)270° (d)360° (e)0°

what's the wave number?

(a) 2m-¹ (b) 3.142m (c) 1m (d) 0.2m (e) non of the above ​

Answer 1

Basic function of a wave is given as,
`y(x,t)=Asin(kx\pm wt \pm $\Phi$)`. Where

"A" is amplitude, "k" is the wave number, "w" is angular frequency, and "Ф" is the phase angle.

Based off the given wave function,
`y(x,t)=5sin(60t - x)`, we can say that the phase angle is 0° and the wave number is 1 m.