Consider the wave travelling on a string (SI units)

PHYSICS · Single correct · A Level · Physics · Waves · Waves

Problem

Consider the wave

y = 0.05\sin(4\pi x + 200\pi t)

travelling on a string (SI units). Which one of the following sets correctly gives the amplitude

(A)

, wavelength

(\lambda)

and speed

(v)

of the wave? (a)

A = 0.05\,\text{m},\; \lambda = 0.50\,\text{m},\; v = 25\,\text{m\,s}^{-1}

(b)

A = 0.10\,\text{m},\; \lambda = 0.50\,\text{m},\; v = 50\,\text{m\,s}^{-1}

(c)

A = 0.05\,\text{m},\; \lambda = 0.50\,\text{m},\; v = 50\,\text{m\,s}^{-1}

(d)

A = 0.05\,\text{m},\; \lambda = 0.25\,\text{m},\; v = 25\,\text{m\,s}^{-1}