Point charges of 7.00 nC are situated at each of three corners of a square whose side is 0.450 m. (A) What is the magnitude of the resultant force on a point charge of -2.50 μC if it is placed at the center of the square? Express your answer in newtons. (B) What is the direction of the resultant force on a point charge of -2.50 μC if it is placed at the center of the square?   The resultant force is directed to the vacant corner. The resultant force is directed away from the vacant corner.

Physics for Scientists and Engineers: Foundations and Connections
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Chapter23: Electric Forces
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Point charges of 7.00 nC are situated at each of three corners of a square whose side is 0.450 m.

(A) What is the magnitude of the resultant force on a point charge of -2.50 μC if it is placed at the center of the square? Express your answer in newtons.

(B) What is the direction of the resultant force on a point charge of -2.50 μC if it is placed at the center of the square?

 
The resultant force is directed to the vacant corner.
The resultant force is directed away from the vacant corner.

(C) What is the magnitude of the resultant force on a point charge of -2.50 μC if it is placed at the vacant corner of the square? Express your answer in newtons.

(D) What is the direction of the resultant force on a point charge of -2.50 μC if it is placed at the vacant corner of the square?

 
The resultant force directed toward the center of the square.
The resultant force directed outward the center of the square.

 

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