Two Harmonic Waves Are Described By $$y _ { 1 } = ( 4 \mathrm {~m} ) \sin \left( \frac { 8 } { m } x - \frac { 300 } { \mathrm {~s} } t \right)$$

Multiple Choice

Two harmonic waves are described by $$y _ { 1 } = ( 4 \mathrm {~m} ) \sin \left( \frac { 8 } { m } x - \frac { 300 } { \mathrm {~s} } t \right)$$ $$y _ { 2 } = ( 4 m ) \sin \left( \frac { 8 } { m } x - \frac { 300 } { s } t - 2 \right)$$ What is the frequency (in Hz) of the resultant wave?

A) 300
B) 48
C) 8
D) 0.8
E) 150