# 3 (15) Three charges, 91 = 5aC, ga = 4rd, and 9--ZuC, are placed in a line (see thetigure). It is known that the distance between g and g2 is d12 2 cm, while the distancebetween g2 and s is ds L.5 cm. (a) Find the force (direction and magnitude) exertedon q2 by q. (b) Find the force (direction and magnitude) exerted on ga by g. (c) Fiadthe total resultant force (direction and magnitude) on g2d12d23934. (15)chargeCharge q-10 C is at a212.0cm. Find the magnitude and direction of the electricat point A on the a axis at theA 20cm

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3 views help_outlineImage Transcriptionclose3 (15) Three charges, 91 = 5aC, ga = 4rd, and 9--ZuC, are placed in a line (see the tigure). It is known that the distance between g and g2 is d12 2 cm, while the distance between g2 and s is ds L.5 cm. (a) Find the force (direction and magnitude) exerted on q2 by q. (b) Find the force (direction and magnitude) exerted on ga by g. (c) Fiad the total resultant force (direction and magnitude) on g2 d12 d23 93 4. (15) charge Charge q -10 C is at a212.0cm. Find the magnitude and direction of the electric at point A on the a axis at the A 20cm fullscreen
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Step 1

(a) The force F21 exerted on q2 by q1 is repulsive since both the charges are positive. The magnitude and direction of force are given by,

Step 2

(b) The force F23 exerted on q2 by q3 is attractive since the charges are opposite. The magnitude and direction of force are given by,

Step 3

(c) Total resultant force F on q2 is equal to the sum of F21 an...

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### Electric Charges and Fields 