Physics

Problem

For a sinusoidal wave, accurate measurements give

\omega=150\,\text{rad s}^{-1}

and

k=30\,\text{m}^{-1}

. A student, however, uses the incorrect relation

v=\omega\lambda

instead of the correct one and obtains a speed

v_{\text{wrong}}

. What is the percentage error in the speed calculated by the student? a)

100\%

528\%

84\%

214\%