Two waves with an amplitude of 54 units and 64 units arrive at a point in a medium simultaneously. If the two waves are in phase with each other, what is the resultant amplitude of the wave?

Question

anonymous · Answer

10 units

radar · Answer

I would assume they would add as they are in phase at that moment.

michele_laino · Answer

If I call with $A_1$ the amplitude of one wave and with $A_2$ the amplitude of the other wave, then, at the region of interference, under the condition of same phase, the resultant amplitude is:
$A_1+A_2$

shamim · Answer

If these 2 waves r out of phase then 
The resultant amplitude will b 64-54=?