Two very small spheres are initially neutral and separated by a distance of 0.418 m. Suppose that 3.23 × 1013 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere? (b) is the force attractive or repulsive? (a) Number (b) The force is i Units

11:09 d G . O 图“自 Ritesh Sah 2. A uniform rod oflength L lies on the x-axis as shown. The rod has a net charge of Q that is uniformly spread alongits length. Q=+5.00e-9 C L= 5.00 meters A uniformly charged rod of length L on the x-axis. Point P is at (5,2) meters on the x,y plane. Use the methods shown in class to: • Calculate the magnitude/size of the electric field at point P due to the rod. Calculate the Trig Angle, measured counter-clockwise from the +x-axis in degrees, of the electric field at point P due to the rod.

Two very small spheres are initially neutral and separated by a distance of 0.590 m. Suppose that 2.21 x 1018 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on each sphere? (b) Is the force attractive or repulsive? (a) Number i Units (b) The force is

Two red blood cells each have a mass of 9.05 × 10-14 kg and carry a negative charge spread uniformly over their surfaces. The repulsion arising from the excess charge prevents the cells from clumping together. One cell carries -3.00 pC and the other –3.10 pC, and each cell can be modeled as a sphere 3.75 x 10- m in radius. If the red blood cells start very far apart and move directly toward each other with the same speed, what initial speed would each need so that they get close enough to just barely touch? Assume that there is no viscous drag from any of the surrounding liquid. initial speed: m/s What is the maximum acceleration of the cells as they move toward each other and just barely touch? maximum acceleration: m/s?

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A small bead with a positive charge q is free to slide on a horizontal wire of length 4.0 cm. At the left end of the wire is a fixed charge q, and at the right end is a fixed charge 4q. How far from the left end of the wire does the bead come to rest?

11:09 d G M O 图“ Ritesh Sah 2. A uniform rod of length L lies on the x-axis as shown. The rod has a net charge of Q that is uniformly spread alongits length. Q=+5.00e-9 C L= 5.00 meters A uniformly charged rod of length L on the x-axis. Point P is at (5,2) meters on the x,y plane. Use the methods shown in class to: • Calculate the magnitude/size of the electric field at point P due to the rod. Calculate the Trig Angle, measured counter-clockwise from the +x-axis in degrees, of the electric field at point P due to the rod.

Two large, nonconducting plates are suspended 2.83 cm apart. Plate 1 has an area charge density of +92.3 µC/m², and plate 2 has an area charge density of +10.1 µC/m². Treat each plate as an infinite sheet. How much electrostatic energy UE is stored in 2.29 cm³ of the space in region A? UE = What volume V of the space in region B stores an equal amount of energy? V = J 3 cm³ Plate 1 Region A Region B Plate 2 Region C

The magnitude of the electrostatic force between two identical ions that are separated by a distance of 7.7 x 10-10 m is 263.1 x 10° N. (a) What is the charge of each ion? (b) How many electrons are "missing" from each ion (thus giving the ion its charge imbalance)? (a) Number Units (b) Number i Units

Consider the three point charges in the x-y plane as shown in the figure. 90 80 70 60 50 40 30 20 10 0 0. Q1 Q3 ·0 Q2 0 10 20 30 40 50 60 70 80 90 x (cm) What is the total electrostatic energy of the system? The point charges have the following values: Q₁ = 5.37 nC, Q₂ = 6.04 nC, Q3 = -7.32 nC. Submit Answer Tries 0/12 Submit Answer Incorrect. Tries 3/12 Previous Tries Point charge Q3 is moved away to infinity by an external force. How much work did the external force perform in this process?