Two metal spheres, each of radius 3.8 cm, have a center-to-center separation of 1.6 m. Sphere 1 has a charge of +1.5 x 10-8 C; sphere 2 has a charge of -2.3 x 10-8 C. Assume that the separation is large enough for us to assume that the charge on each sphere is uniformly distributed (the spheres do not affect each other). With V = 0 at infinity, calculate in volts (a) the potential at the point halfway between their centers and the potential on the surface of (b) sphere 1 and (c) sphere 2.

The figure below shows three charges at the corners of a rectangle of length x = 0.65 m and height y = 0.42 m. What is the minimum amount of work needed by an external force to move the +2.7 µC charge to infinity?

Jwo metal spheres, each of radius 4.2 cm, have a center-to-center separation of 1.9 m. Sphere 1 has a charge of + 1.5 x 10 C; sphere 2 has a charge of - 3.4 x 10 C. Assume that the separation is large enough for us to assume that the charge on each sphere is uniformly distributed (the spheres do not affect each other). With V = 0 at infinity, calçulate in volts (a) the potential at the point halfway between their centers and the potential on the surface of (b) sphere 1 and (c) sphere 2. (a) Number i Units (b) Number i Units (c) Number i Units

A 5 g dust particle has a charge of 7 ?C and is suspended between two oppositely charged parallel plates as shown below. The distance between the particle & the edges of the plates is much greater than the distance between the plates. Each plate has the same constant uniform charge density. (note: Top plate is negative and bottom is positive) Find the voltage between the plates. V=

Charge q = 140 µC is distributed uniformly throughout.a spherical volume of radius R = 8.1 cm. Let V= 0 at infinity. What are (a) V at radial distancer= 2.2 cm and (b) the potential difference between points at r = R and r = 0 (VR-Vo)? %3D %3D %3D (a) Number Units (b) Number i Units

(a) Calculate the number of electrons in a small, electrically neutral silver pin that has a mass of 8.0 g. Silver has 47 electrons per atom, and its molar mass is 107.87 g/mol. (b) Imagine adding electrons to the pin until the negative charge has the very large value 3.00 mC. How many electrons are added for every 109 electrons already present?

Two parallel plates that are initially uncharged are separated by |1.7 mm. What charge must be transferred from one plate to the other if 19.0 kJ of energy are to be stored in the plates? The area of each plate is 16.0 mm2. O 6.0 mC 80 μC O 40 µC O 56 µC

Two plates with area 5.00 × 10-³ m² are separated by a distance of 4.80 × 10−4 m. If a charge of 3.40 × 10-8 ℃ is moved from one plate to the other, calculate the potential difference (voltage) between the two plates. Assume that the separation distance is small in comparison to the diameter of the plates.

Two charges Q1=22µC and Q2=-25µC are placed on the corners of a right triangle with the sides a=13mm and b=25mm. How much work must be done to bring a third charge Q3=5µC from infinity to point P that is a distance c away from the empty corner as shown in the figure below. Express your answer in units of Joules using zero decimal places. Take Coulomb constant as k=9.0x109 N.m2/c2. Please do not forget the minus sign if your answer is negative. b2 Hint: If you use similar triangles c = Vą? + b² Q. P. а Q1 b

Two point charges Q1=4.5 uC and Q2=8m5 uC are initially very far apart. They are then brought together, with a final separation of 3.5 mm.how much work does it take to bring them together?