Two positive charges qi = Bq and q2 = q are fixed at the opposite ends of a horizontal insulating rod of length d = 2.0 m. A third small, charged bead is free to slide on the rod. It is found that when the third bead is at x = 1.5 m from q1, the bead is in equilibrium. Determine the value B. 92 B =

A long thin rod is bent into a perfect semicircle of radius 4.30 m. The linear change density of the rod is λ = 3.10 nC/m. How much charge is on a small piece of the rod that subtends an angle Δθ = 0.170 radians? 13.3 nC 0.527 nC 2.27 nC 4.24 nC

Three point charges are fixed as shown in (Figure 1). Take q₁ = 20 μC, q2 = -30 μC, 93 = 40 μC, and d = 9.0 mm. The point charge of 3.6 μC is placed at the center of the triangle. Figure y Ke X 93 9₁ d ( d 1 of 1 92 > ▼ Part A What is the magnitude of the force exerted on the charge at the center of the triangle? Express your answer with the appropriate units. |F|net = Submit Part B I 0 = 346 μА O Value X Incorrect; Try Again; 5 attempts remaining N Previous Answers Request Answer What is the direction of the force exerted on the charge at the center of the triangle? Express your answer in degrees, measured counterclockwise from the positive x-axis. ?

Two identical conducting spheres each having a radius of 0.500 cm are connected by a light 2.20 m long conducting wire. A charge of 56.0 µC is placed on one of the conductors. Assume the surface distribution of charge on each sphere is uniform. Determine the tension in the wire.

Two small beads having positive charges q1 = 29q and q2 = q are fixed at the opposite ends of a horizontal insulating rod of length d = 1.50 m. The bead with charge q1 is at the origin. As shown in the figure below, a third small, charged bead is free to slide on the rod.   (a) At what position x is the third bead in equilibrium?x =  m(b) Can the equilibrium be stable?

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 -2.60 pC, and each cell can be modeled as a sphere 3.75 × 10-º 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?

Q. 1 Two-point charges q1(3.0µC) and q2(6.0µC) are placed a distance d apart in vacuum. Calculate the Coulomb force experienced by charge q2 due to charge qi for d = 40.0cm, 60.0cm, 80.0cm, 1.00m and 1.2m. Plot the force as a function of d. 20.0cm, q1 q2 d.