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26 August, 19:50

What is the magnitude (in Newtons) of the force a 796-uC charge exerts on a 481-nC charge 23.1-cm away? 2 pts Question 5 A proton is released in a uniform electric field, and it experiences an electric force of 6.9x10-15-N toward the south. What is the magnitude (in N/C) of the electric field?

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  1. 26 August, 20:24
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    (a) 64.58 N

    (b) 43125 N/C

    Explanation:

    (a) q1 = 796 uC = 796 x 10^-6 C, q2 = 481 nC = 481 x 10^-9 C,

    r = 23.1 cm = 0.231 m

    Force, F = k q1 q2 / r^2

    F = (9 x 10^9 x 796 x 10^-6 x 481 x 10^-9) / (0.231) ^2

    F = 64.58 N

    (b) F = 6.9 x 10^-15 N

    E = F / q

    E = (6.9 x 10^-15) / (1.6 x 10^-19) = 43125 N/C
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