One Point Charge +Q Is Placed at the Center of a Square

question 25

Multiple Choice

One point charge +Q is placed at the center of a square, and a second point charge -Q is placed at the upper-left corner of the square. It is observed that an electrostatic force of magnitude 2.0 N acts on the positive charge at the center. Now a third charge -Q is placed at the lower-left corner of the square, as shown in the figure. What is the magnitude of the net force that acts on the center charge now?

• A) 0.0 N
• B) 2.8 N
• C) 4.0 N
• D) 5.3 N

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Definitions:

Stress Decreases

Refers to the reduction in the force per unit area exerted on a material or structure.

Stress Consistently

implies the continuous application or presence of force on an object or material over a period of time.

Seismic Waves

Waves of energy that travel through the Earth's layers, produced by earthquakes or other earth movements, used to study the interior of the Earth.

Epicenter

The point on the Earth's surface that is directly above the focus of an earthquake, where the seismic waves are felt most strongly.