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

question 28

Multiple Choice

Two harmonic waves are described by $$y _ { 1 } = ( 3 \mathrm {~m} ) \sin \left( \frac { 4 } { m } x - \frac { 700 } { s } t \right)$$ $$y _ { 2 } = ( 3 m ) \sin \left( \frac { 4 } { m } x - \frac { 700 } { s } t - 2 \right)$$ 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

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