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physics

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what is the electric field at the position 20 cm from Q2 and 60 cm from Q1?

Q2=40 micro coulombs
Q1=20 micro coulombs
Q2 and Q1 are separated by 80 cm

  • physics -

    60 cm or 80 cm ?????
    If 80 cm =0.8 m , then

    F = k•q1•q2/r² =
    =9•10^9•40•10^-6•20•10^-6/0.8^2 = ...

  • physics -

    no elena i believe quinton is looking for the electric field positions of Q2 and Q1 separately at different distances from each respectively

  • physics -

    Sorry.

    E = k•q/r^2
    E1 = k•q1/r1^2 = 9•10^9•40•10^-6/(0.2)^2 =6•10^6 V/m,
    E2 = k•q2/r2^2 = 9•10^9•60•10^-6/(0.6)^2 = 1.5•10^6 V/m,
    E =E1 – E2 = 4.5•10^6 V/m.

  • physics -

    thank you very much guys..i really appreciate it.

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