Recent content by tonyza2006

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    Undergrad Photoelectric effect experiment

    Hi there, I have this problem with this photoelectric effect experiment. In the image of my attachment particulates will be ejected from C and move to D. The electric field(by A and B) will change the particulates trajectory to A, B or will not change this? Thanks Tony PS: Sorry...
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    Undergrad Why is Newton's law of gravitation different for non-spherical objects?

    I'm surprise with the number of answers. You really help me! Thanks Doc Al, D H and Feldoh, your answers are brilliant. And thanks to adivice the matters of integrate.Thanks Tony
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    Undergrad Why is Newton's law of gravitation different for non-spherical objects?

    Hi there, I don't understand why the equal of Newton's law of gravitation F = Gm1m2/d(squared) is different for no spherical objects. In the image of my attachment there are one spherical object and a no spherical object. So why if there are not very distant the equal used is F =...