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algebra based physics

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A proton is held at a fixed position. An electron is placed 0.85m away and released.

Find the electron's speed when it's 9.0mm from the proton.

  • algebra based physics -

    What is the difference in P between the two positions? That will be the gain of KE.

    PE=kqq/r at each position, or


    set that equal to 1/2 mv^2 solve for v.

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