Two waves of the same frequency have amplitudes 1.60 and 2.20. They interfere at a point where their phase difference is `60.0^(@)`. What is the resultant amplitude?

Explanation

To find the resultant amplitude of two waves with given amplitudes and a phase difference, we can use the formula for the resultant amplitude when two waves interfere:

\[ A_r = \sqrt{A_1^2 + A_2^2 + 2A_1A_2 \cos(\phi)} \]

Where:
- \( A_r \) is the resultant amplitude,
- \( A_1 \) and \( A_2 \) are the amplitudes of the two waves,
- \( \phi \) is the phase difference between the two waves.
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