10. In the figure an electron (e) is to be released from rest on the central axis of a uniformly charged disk of radius R. The surface charge density on the disk is +4.12 µC/m?. What is the magnitude of the electron's initial acceleration - m/s² if it is released at a distance R/148 from the center of the disk?

P9 E4

Problem 10: Two point charges, Q₁ = Q₂ = +1.51 µC, are fixed symmetrically on the x axis at x = ±0.357 m. A point particle of charge. Q3 +3.18 μC, with mass m = 13.3 mg can move freely along the y axis. ▷ If the particle on the y axis is released from rest at y₁ 0.0211 m, what will be its speed, in meters per second, when it reaches y2 = 0.0624 m? Consider electric forces only. v = 0.66 m/s

Two particles having charges q1 = 0.500 nC and q2 = 8.00 nC. The first charge is located at x=0, y = 3 cm and the second charge is located at x = 5 cm, y = 0. What is the magnitude and direction of the electric field at the origin (x = 0, y = 0)?

Charged particles q1=−q1=− 4.00 nCnC and q2=+q2=+ 4.00 nCnC are separated by distance 3.90 mmmm , forming an electric dipole. Find the magnitude of the electric dipole moment. Express your answer in coulomb meters to three significant figures.

What should be the direction and magnitude of the vertical electric field that will balance the weight of a plastic sphere with the charge Q= +1.5 nC and mass m= 1.8 g? 3.2 x 10^5 N/C positive y-direction 1.2 x 10^6 N/C in +y-direction 1.2 x 10^6 N/C in negative y-direction 3.2 x 10^5 N/C in negative y-direction

A conducting sphere of radius r1 = 0.46 m has a total charge of Q = 2.9 μC. A second uncharged conducting sphere of radius r2 = 0.23 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. r1 = 0.46 mr2 = 0.23 mQ = 2.9 μC What is the total charge on sphere two, Q2 in coulombs?

You have a summer job in the Exploratorium in San Francisco. Your team has been tasked to make an exhibit where a small charged pith ball is levitated above a large charged plate with a small circular opening in the middle. The pith ball is to be suspended about 5 cm above the center of the circular opening. After sufficient testing, you know that the plate could be roughly uniformly charged with 2.5 µC/m?. You measure 9.6 cm for the diameter of the circular opening and 0.20 grams for the mass of the pith ball. Find what the charge on the pith ball should be.

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