Question

Now suppose that the charge on the left in #3 is +4 x 10 -5 C...

Now suppose that the charge on the left in #3 is +4 x 10 -5 C and the one on the left is -3 x 10 -6 C (no longer
equal to the other), and that they are separated by 2 meters. Find the magnitude of the attractive force
between the charges AND tell the magnitude and direction of the electric field, DUE TO the positive charge, AT
the location of the negative charge. Would this field still exist if the negative charge were not there? Why or
why not?

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