How can I solve this? What is the electric potential (in units of Volts) at the position of the red dot, which is 0.2 m from each of these charges? What is the value of the electric field (in units of N/C) at the position of the red dot, which is 0.2 m from each of these charges? Enter your answer as a whole number only in the box below. Use k = 9 x 10^9 Nm^2/C^2 in your calculation and remember 1 nC = 1 x 10^-9 C.
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