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March 29, 2017

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1) Part A: Two pellets, each with a charge of 3 × 10−6 C,
are located 0.03 m apart.
What is the electric force between
them? The value of the Coulomb
constant is 8.99 × 109 N · m2/C2 and
the universal gravitational constant is
6.67259 × 10−11 m3/kg · s2.
Answer in units of N.

Answer: 8.99 N

Part B: What mass would experience this same gravitational force?
Answer in units of kg. (This is what I need help with.)

  • Physics - ,

    f=GMM/.03^2

    F=8.99
    M^2=8.9*.03^2/G

    solve for M

  • Physics - ,

    Mr. Bob, I got 0.000009439 and it was wrong.

  • Physics - ,

    I agree,that is really wrong. G is a samll number, diviing it into a number makes the number big. Check your exponents.

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