Two Harmonic Waves Are Described By $y_{1}=(3 \mathrm{~m}) \sin \left(\frac{4}{\mathrm{~m}} x-\frac{700}{\mathrm{~s}} t\right)$

Multiple Choice

Two harmonic waves are described by: $y_{1}=(3 \mathrm{~m}) \sin \left(\frac{4}{\mathrm{~m}} x-\frac{700}{\mathrm{~s}} t\right)$ $y_{2}=(3 \mathrm{~m}) \sin \left(\frac{4}{\mathrm{~m}} x-\frac{700}{\mathrm{~s}} t-2\right)$ What is the amplitude of the resultant wave?

A) 8.0 m
B) 4.3 m
C) 6.0 m
D) 3.2 m
E) 3.0 m