Physics

Problem

Two sound waves each of amplitude

2.0\,\text{cm}

and the same frequency arrive at a point with a phase difference of

60^{\circ}

. What is the amplitude of the resultant vibration at that point? a)

4.0\,\text{cm}

1.0\,\text{cm}

3.5\,\text{cm}

2.0\,\text{cm}