Two wavelengths with amplitudes of 75 units and 74 units arrive at a point in a medium simultaneously. If the two waves are out of phase with each other, what is the resultant amplitude of the waves?
A: 74 units
B: 1 unit
C: 75 units
or
D: 149 units
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Answer:
B 1 unit
Explanation:
If the two waves have the SAME FREQUENCY and are exactly
out of phase (180° apart), then the resultant wave will have the
same frequency and an amplitude of 1 unit.
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