Recent content by dawud

Homework Statement Attached. If you don't mind I'd like to go through each part of the question to make sure I've understood correctly. Thanks a lot :smile: Homework Equations F=qE F=(γq^2)/(d^2) F=Kx Taylor/Maclaurin (?) The Attempt at a Solution So for part (a) I know that...

Since I've now got sin^-1(0) I don't know where to proceed from there. As far as I know, that wouldn't yield a max/min value, or would it? And I don't know how the w in the argument factors into all this

Oh man, I don't think this is working out for me lol. Here's the working I've done thus far, I don't think it's correct; any ideas where I went wrong? Edit: I uploaded the attachments the wrong way round.

Thanks a lot btw. So I'm guessing I should differentiate the expression again right? And from there work out the max and min turning points of the graph?

Homework Statement It's attached. Homework Equations The Attempt at a Solution I'm stuck on part b. I've attached my attempt at a solution not sure if it's right and, if it is, where to go from there.

Thanks a lot guys! I've got it now!

Homework Statement It's got a diagram in it so I have just attached a picture of it. Homework Equations nλ=2dsinθ The Attempt at a Solution I've really got no idea how to proceed with this one. I think you have to consider the effect of the thin film as well. Any ideas?