Question

Two waves are superposed. One wave has an amplitude of 3 cm, and the other has an amplitude of 4 cm. What is the resultant amplitude?

Answer 1

7 cm

Step-by-step explanation:

When the waves are super-posed their amplitudes are added algebraically to get the resultant amplitude.

resultant amplitude = 3+4 = 7cm

Answer 2

The sum (or difference) of two solutions of the wave equation is again a solution of the wave equation(superposition principle)

therefore the amplitude of resultant wave is 3+4= 7cm