Consider two concentric conducting spheres. The outer sphere is hollow and initially has a charge Q, = -9Q deposited on it. The inner sphere is solid and has a charge Q, = +5Q on it. (a) How much charge is on the outer surface? How much charge is on the inner surface? (b) Suppose a wire is connected between the inner and outer spheres. Electrostatic equilibrium is established. How much charge is on the outer surface of the outside sphere? How much is on the inner surface? Q How, if at all, does the electric field at the surface of the inside sphere change when the wire is connected? O It changes from a finite value to a greater value. It changes from a finite value to zero. O It does not change at all. O It changes from a finite value to a lesser nonzero finite value. (c) Suppose we return to the original conditions in (a), with +5Q on the inner sphere and -9Q on the outer. We now connect the outer sphere to ground with a wire and then disconnect it. How much total charge will be on the outer sphere How much charge will be on the inner surface of the outer sphere? How much willI be on the outer surface of this sphere?

A solid metallic sphere with a radius of rA - 5.00 cm is located inside a hollowed metallic sphere (radii B = 8.00 cm and rc = 12.0 cm); the spheres are concentric with each other and they are electrically insulated from each other. The inner sphere has a charge of-45.0 μC while the hollowed sphere has a charge of +80.0 μC.. What is the surface charge density on the outer surface (the one with rc = 12.0 cm)? To +691 μC/m² + 193 μC/m² -663 μC/m² +4427C/m² - 249 μC/m² W

In the figure two tiny conducting balls of identical mass m and identical charge q hang from nonconducting threads of length L. Assume that is so small that tan 0 can be replaced by its approximate equal, sin 8. If L = 140 cm, m = 10 g, and x = 6.0 cm, what is the magnitude of q? L ᏀᎾ Ꮎ Number i L 9 0.0000009165 Units nC

Two parallel, thin, L×L�×� conducting plates are separated by a distance d�, as shown. Let L=�=2.5 m, and d=�=2.0 mm. A charge of ++6.5μC�C is placed on one plate, and a charge of −−6.5μC�C is placed on the other plate. a) What is the magnitude of charge density on the inside surfae of each plate in Coulombs per squae meter? b) What is the magnitude of the electric field between the plates?  I was able to find the charge density easily. I am not certain about the electric field.

Three identical conducting spheres denoted as X, Y, and Z are separated in space. They have initial net charges of −2Q, −3Q, and 5Q, respectively. Sphere Z is touched to X and separated, then touched to Y and separated. Upon reaching electrostatic equilibrium, what is the final net charge of Y?

A conducting sphere of radius r1 = 0.21 m has a total charge of Q = 1.6 μC. A second uncharged conducting sphere of radius r2 = 0.29 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. What is the total charge on sphere two, Q2 in coulombs?

A conducting sphere of radius R has an amount of electric charge Q_0 and is brought into contact with a second conducting sphere of radius 3R that initially has no electric charge. Determine the fraction of electric charge Q_0 that the first sphere will have when electrostatic equilibrium is reached.

Water has a mass per mole of 18.0 g/mol, and each water molecule (H₂O) has 10 electrons. (a) How many electrons are there in 7.59 liters of water? (1 liter is equivalent to 1.00 × 10-³ m³) (b) What is the net charge of all these electrons? (a) Number i (b) Number i Units Units

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?