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March 29, 2017

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Two idencial point charges (q = 7.40 x 10^-6 C) are fixed at diagonally opposite corners of a square with sides of length 0.440m. A test charge (q = -2.30 x 10^-8 C), with a mass of 7.25 x 10^-8 kg, is released from rest at one of the empty corners of the square. Determine the speed of the test charge when it reaches the center of the square.

  • Physics - ,

    Simple. What is the potential at the starting corner?

    ans: 2kq/.440
    What is the potential at the center?
    ans:2kq/(.440*.707)

    What is the KE at the center?
    Ans: (voltsfinal-voltsinitial)qtest

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