Recent content by Lemmy

Homework Statement What is the ratio of the intensity at this point to the intensity at the center of a bright bridge Homework Equations GIVEN: Wavelength=6.9x10^-7m d=0.00014m (distance between slits) L=12m (Length to screen/point) Y=14mm EQUATION: I=Io...

AHhhh i see, thank you :)

Well okay, Giant ball = Earth, surface looks flat. Small ball tiny ball, looks curved. Lol but i still don't understand my 1/0 lol But i would represent a flat surface as a spherical surface with a large radius. So isn't 1/0 flat?

for the "but is r2 still 1/0?" what i am asking , is the radius of curvature for the second lens surface given as 0 since it is flat? Because what flat surface has a radius? is what i am proposing. In the lens maker equation light is traveling through the convex lenx first then, through the...

Oh wait hrmm, when the probelm refers to the surface, is it talking about the tangent line? or would the image look like this (| which i thought the lens looked like, but you must be saying it looks like this instead of ()/ with the / being the surface. OHHhhh hrmm, lol CONVEX meaning Radius...

Homework Statement A plane convex lens is made of glass (index 1.42) with one flat surface and the other having a radius of 24 cm. What is the focal length of the lens? Anwer in united of cm.Homework Equations Lensmaker Equation 1/f=(n-1)*((1/r1)-(1/r2))The Attempt at a Solution...

woooo got it right thanks physics monkey

okay going to give this a whirl thank you soo much for your help physics monkey, greatly appreciated

okay i solved and got m=(U^2)/(F*G*m_e) can you check my algebra? i hope this is right *crosses fingers*

oh hmm i see, okay i'll try it, my algebra skills suck though

thing is physics monkey i can't change the left side term, because the problem has everything set to m= already and i can't change left, only answer i can submit is the right term

http://img.photobucket.com/albums/v195/havokxz/equation1.jpg i wrote it out in paint take a look

shouldn't the (U*sqrt((G*m_e*m)/F))) all be in the numerator?

hehe i tried submitting the third post answer and its wrong :(

m=(U*sqrt((G*m*m_e)/F))/(G*m_e) thats not it because i can't use m in the (U*sqrt((G*m*m_e)/F)) because m is not given in both equations they both involve m and r, and both m and r are not given in both equations, so i can't use what i posted in the third post