Two point charges are located on a coordinate system as follows: Q1 = 4.5C at x =

Two point charges are located on a coordinate system as follows: Q1 = ˆ’4.5μC at x = 1.00 cm and y = 1.00 cm and Q2 = 6.0μC at x = 3.00 cm and y = 1.00 cm.
(a) What is the electric field at point P located at x = 1.00 cm and y = 4.00 cm?
(b) When a 5.0-g tiny particle with a charge of ˆ’2.0μC is placed at point P and released, what is its initial acceleration?

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y (cm) x(cm)