Understanding Waves for Solving Problems

[StillAnotherDave]

Homework Statement

Waves question (year one)

Relevant Equations

Not sure

Hello folks,

I'm having trouble getting started on this question about waves. I missed the associated lecture and don't know which formulae I need to be thinking about. Any help towards an approach to the questions would be appreciated.

 

[StillAnotherDave]

The register of zero at the 44.4° and 64.6° means that there is maximum destructive interference at these points. I don't think that the two sources can be assumed to be of the same wavelength. I imagine the formula dsinθ = (m+1/2)λ is relevant?

 

[berkeman]

I don't think that the two sources can be assumed to be of the same wavelength.

The problem states that "the two sources are driven in phase", which means they have both the same frequency and phase.

 

[StillAnotherDave]

The problem states that "the two sources are driven in phase", which means they have both the same frequency and phase.

Ah okay. That's progress already. A hint towards getting started?

 

[Dr_Nate]

Ah okay. That's progress already. A hint towards getting started?

Go youtube a few videos on wave interference then you'll understand conceptually what is going on. After that you can start thinking about the math.

 

[berkeman]

A hint towards getting started?

I imagine the formula dsinθ = (m+1/2)λ is relevant?