Respuesta :

The answer is: They will interfere to create a trough with an amplitude of 6. 

Answer:

[tex]A_r=6.[/tex]

Explanation:

It is given that both wave have same amplitude i.e [tex]A=3.[/tex]

Now, we need to find what will happen to the waves when trough of wave A meets the trough of wave B.

It means that both waves are in same phase i.e, the phase difference between them is 0 degree.

We know resultant amplitude [tex]A_r[/tex] of two waves of same amplitude A with phase difference [tex]\theta[/tex] is given by.

[tex]A_r=2\times A \times cos\dfrac{\theta}{2}.[/tex]

In this case , A=3 and [tex]\theta=0^o.[/tex]

Putting value of A and [tex]\theta[/tex] in above equation.

We get, [tex]A_r=6.[/tex]

Therefore, a new wave will form of resultant amplitude of 6.

Hence, it is the required solution.