1) A conductor has an initial charge of 0.9 C. Calculate the number of electrons that must be added to the conductor so it has a final charge of -2.5 C. (Your answer will be a number, which is unitless.) 2) When placed 5 cm away from an unknown charge Q, a 0.5 x 10° C charge experiences a repulsive electric force of magnitude 11.2 N. Calculate the magnitude of the charge on Q.l (Give your answer in coulombs but don't include the units.)

b) Calculate the net force (magnitude and direction) exerted on charge q by the other four charges, in terms of q, Q, d, and e0. You may draw the force vector to indicate the direction. c) If the charge q is released from rest, and the four other charges held fixed, will the charge q ever “escape” to infinitely far away (assuming an infinite amount of time can pass)? Justify your answer.

A charge of -8.5 μC is at x = 0 and a charge of -4.0 μC is at x = 6.0 cm. What is the electric field at x = 2.0 cm? Specify the direction with the sign of your answer. 1.7 x 108 V/m -2.9 x 106 V/m -2.1 x 108 V/m -1.7 x 108 V/m 2.1 x 108 V/m

A 6 µC charge q1 located at the origin cm creates an electric field that fills all of space. A -8 µC charge q2 is brought to the point cm. The 6 µC charge is returned but now the -8 µC charge is moved to cm. What is the new net force extered on q2? Answer as a vector in Newtons.

Problem 3: Three charges are located as shown in the figure, with values q = 4.9 x 10-16 C, 92 = -1.8 x 10-16 C, 93 = 6.75 x 10-16 C. The charges are separated by d7 = 2.3 × 10-6 m and dz = 1.4 x 10-6 m. 93 d, Otheexpertta.com Part (a) What is the force of g2 ong in the x direction, F,? Give your answer in newtons, and recall k= 8.988 x 10° N m2/C2. F= 1.5 * 10-10 F = 1.5E-10 Correct! Part (b) What is the force of q3 on q in the y direction, F,? Give your answer in newtons. Grade Summary Fy = 1.51 * 10-9 Deductions 2% Potential 98%

A conducting sphere of radius r1 = 0.18 m has a total charge of Q = 1.9 μC. A second uncharged conducting sphere of radius r2 = 0.46 m is then connected to the first by a thin conducting wire. The spheres are separated by a very large distance compared to their size.Randomized Variables r1 = 0.18 mr2 = 0.46 mQ = 1.9 μC What is the total charge on sphere two, Q2 in coulombs?

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A +2.3 C charge is placed on the x-axis at ×=+2 m, and a -5.7 C charge is placed on they-axis at y = +4 m. What is the magnitude of the net electric field at the origin? What is the direction of the net electric field? Give your answer as a positive angle between 0° and 360°. If a +5 C charge is placed at the origin, what is the magnitude of the net electric force on the charge? What is the direction of the net force? Give your answer as a positive angle between 0° and 360°

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