Recent content by Lemmy

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    Phase Difference Problem, Ratio of I/Io

    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...
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    How Do You Calculate the Focal Length of a Plane Convex Lens?

    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?
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    How Do You Calculate the Focal Length of a Plane Convex Lens?

    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...
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    How Do You Calculate the Focal Length of a Plane Convex Lens?

    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...
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    How Do You Calculate the Focal Length of a Plane Convex Lens?

    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...
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    Gravatational Potential Energy

    woooo got it right thanks physics monkey
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    Gravatational Potential Energy

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

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

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

    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
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    Gravatational Potential Energy

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

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

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

    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
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