1) Determine the amplitude two sinusoidal of when waves frequency and travelling in the same are the resultant wave the and combined, if their amplituden are 4.0 cm same direction 3.0 Cm and they differ in phase by II rad 2

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1) Determine the amplitude of
two simusoidal
waves
when
frequency
are
and
and travelling
4.0 cm
combined, if
the resultant
the
having
in the
same
wave
same
direction
their amplitudes are
3.0 Cm
and they differ in phase by I rad.
Transcribed Image Text:1) Determine the amplitude of two simusoidal waves when frequency are and and travelling 4.0 cm combined, if the resultant the having in the same wave same direction their amplitudes are 3.0 Cm and they differ in phase by I rad.
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Why did you use cosine times the phase difference in the square root? Sorry just having a hard time understanding this one. 

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