The following 5 point-charged objects are all on a straight line. Evaluate the direction of the forces listed. Note that these forces are specifically the force of one charged object on a different charged object, not the force from all of the charged objects on another. If the force is zero, select No Force. +, and 0 represent positive, negative and neutrally charged point objects, respectively. 5 2 3 1 4 +- Left Right Left Right Left Right ⚫ The force due to Object 2 on Object 4. The force due to Object 2 on Object 3. The force due to Object 4 on Object 5. The force due to Object 5 on Object 3. Focus carefully on whether two charged objects attract or repel each other. Draw arrows representing the pairs of forces between two objects and then make sure you choose the correct one. Submit Answer Incorrect. Tries 7/99 Previous Tries

Two positively-charged balls with equal amounts of charge and mass m = 3.5 g are suspended from the ceiling by a thread of length L = 1.1 m as shown in the drawing. a)Consider the forces acting on the ball shown on the right in the drawing. Which one of the following choices best represents the free-body diagram for this situation?  b)Enter an expression for the sum of the forces in the horizontal direction acting on the ball on the right in the drawing in terms of the magnitude of the tension T, the magnitude of the electric force FE, and the angle θ.  c)Enter an expression for the sum of the forces in the vertical direction acting on the ball on the right in the drawing.

The diagram at the right shows three charges positioned to form an equilateral triangle. Each side has a length of 46 cm and each charge has a positive charge of 7.8 nC. Determine the magnitude and direction of the net electric force exerted upon the charge at point P at the top of the triangle.

Four charged particles are placed at corners of a square as shown in the figure. Find the magnitude and direction of the net electric force on charge Q3. k = 9.00 × 10⁹ Nm² C2 Q₁ = -3.0 nC + Q₁= 2.0 nC 1.0 cm Q₂ = 2.0 nC + 1.0 cm Q3= -3.0 nC 35.9 x 10-5 N, 45° South of East West North South East

This applet helps you practice the drawing of a free body diagram for a charge experiencing electric forces fi other charges. Three charges 9₁, 92 and q3 are placed along a staright line as shown below. The charge q2 is placed halfway between q1 and q3 separated by a distance 2d. +4uC +2μC +6μС 91 = +4μC F1-2 F1-2 is the force of q₁ on 92. F3+2 is the force of q3 on q2- In the applet below, select the force vectors on q₂ due to q₁ and 93. Place the tails of the force vectors on 92 For each force, there are four choices, two specifying the directions of the forces and two specifying the magnitudes of the forces. If F1 2 > F3+2, then pick the longer vector for F₁2 and the shorter vector for F3-2, and vice-versa. How will you determine which force is greater? F1-2 d F₁ 2 d F1-2 Select the appropriate directions and relative magnitudes of F1-2 and F3-2 and place their tails on the test charge, 92. 92 = +2 μC X F3-2 93 = +6 μC F3, 12 F3-2 F3-2

Each of the following electric charges creates an electric field at the point 3.0 cm from the charge of the second charge. What are the electric fields E1, E 2 and E3? Write your answer in vector form. == 91 1.0 nC (+ 1.0 cm 3.0 cm === 92 1.0 nC (+ 1.0 cm == 93 1.0 nC (+

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Solve the following problems completely and neatly. Write your solution in a clean sheet of paper. A +80µC charge is placed at the origin. A -35µC is placed at x = 2m and a +170µC is placed at x= -4m. (a) what is the net electric force acting on the +80µC charge? (b) what is the net electric force acting on the +170µC charge?