Answer:
The amplitude of the resultant wave are
(a). 0.0772 m
(b). 0.0692 m
Explanation:
Given that,
Frequency = 135 Hz
Wavelength = 2 cm
Amplitude = 0.04 m
We need to calculate the angular frequency
As the two waves are identical except in their phase,
The amplitude of the resultant wave is given by
(a). We need to calculate the amplitude of the resultant wave
For
The amplitude of the resultant wave is
Put the value into the formula
(b), We need to calculate the amplitude of the resultant wave
For
Hence, The amplitude of the resultant wave are
(a). 0.0772 m
(b). 0.0692 m