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Three charges of –9 μC are placed at locations of <3,1,0> cm, <1,3,0> cm, and <3,3,0>...

Three charges of –9 μC are placed at locations of <3,1,0> cm, <1,3,0> cm, and <3,3,0> cm.

(a) Find the electric field at the location <2,2,0> cm. (Hint: what type of quantity is an electric field?)

(b) What would be the force be on a – 0.25 nC charge placed at <2,2,0> cm?

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