Two harmonic waves are described by $$y _ { 1 } = ( 7 \mathrm {~m} ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t \right)$$ $$y _ { 2 } = ( 7 m ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t + 2 \right)$$ What is the phase (in rad)of the resultant wave when x = t = 0?
A)3
B)0
C)2
D)1
E)4

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The Answer of Two harmonic waves are described by $$y _ { 1 } = ( 7 \mathrm {~m} ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t \right)$$ $$y _ { 2 } = ( 7 m ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t + 2 \right)$$ What is the phase (in rad)of the resultant wave when x = t = 0?
A)3
B)0
C)2
D)1
E)4

Two Harmonic Waves Are Described By y1=(7 m)sin⁡(5mx−100st)y _ { 1 } = ( 7 \mathrm {~m} ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t \right)y1​=(7 m)sin(m5​x−s100​t)

Two Harmonic Waves Are Described By $y _ { 1 } = ( 7 \mathrm {~m} ) \sin \left( \frac { 5 } { m } x - \frac { 100 } { s } t \right)$