Recent content by a.a

nope...I got it wrong...?

Is it f = nv/2L, that didnt work for me though.

sorry about the late reply, I only got as far as : sin 46 = X/H = (H-half lambda)/H Solved for H and got 468.54 Then: sin 22 = h/H and got h= 175.5 Is that right?

related by pythagorean? How does that help us?

This may be a dumb question, but what do we do after we find n?

So, in this diagram half lamda = H-X so how do we go about finding H or X? nothing is given...:S Probably a lot of trigs, do the angles in my second diagram make sence? If so then I get: sin 22= hyp (h)/(half lambda +X) and I don't really know where to go from there..

where would i go from here?

is this better?

phase difference=(2pi* path difference)/labmda

Sorry, my numbers are different, the angle from horizontal is 22 and my wavelength is 263 m.. so the question would read: Radio waves of wavelength 263 meters from a star reach a radio telescope by two separate paths. One is a direct path to the receiver which is situated on the edge of a cliff...

I did.. I got 5504.29 as my path diff, PD= (lambda)^2/4pi thats from phase difference = half lambda = 2pi PD/lambda Where am i going wrong? After I found PD.. from my diagram i found that H= PD sin 22/sin46

Homework Statement Radio waves of wavelength 250 meters from a star reach a radio telescope by two separate paths. One is a direct path to the receiver which is situated on the edge of a cliff by the ocean. The second is by reflection off the water. The first minimum of destructive...

I'm having trouble with this one, I don't understand how to find the value for the hyp. I just found phase difference (=half wavelength) and found path difference (from: phase difference = 2pi*phase difference/wavelength) Then I used height = phase difference*sin theta any advice?

So would the answer be 0.624m?

Homework Statement A violin string has a length of 0.35m and is tuned to concert G (a frequency of 392Hz). Where must the violionist place her finger to play concert A, with a frequency of 440Hz? Homework Equations The Attempt at a Solution I used v= frequency * wavelength and...