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1) 10 Coulombs of charge are placed on a spherical conducting shell. A particle with a -3C point charge is placed at the center of the cavity. The net charge in coulombs on the inner surface of the shell is what? 2) A 30 N/C uniform electric field points perpendicularly towards the left face of a large neutral conducting shee

Dealing with Charge/gaussian

1) A physics instructor in an antennae room charges an electrostatic generator to 25 microC, then carries it into the lecture hall. The net electric flux in N.m^2/C through the lecture hall walls is what? 2) A point particle with charge q is at the center of a Gaussian surface in the form of a cube. The electric flux through


Please show all work and diagrams plus equations used to solve problem. Thanks! Two point particles, with charges of q1 and q1 are placed a distance r apart. The electric field is zero at a point P between the particles on the line segment connecting them. We conclude that: (answer C - why) a) q1 and q2 must have the sa

Electrostatic Force Calculations

Please show all work and diagrams plus equations used to solve problem. Thanks! 1) Two identical conducting spheres A and B carry equal charge. They are separated by a distance much larger than their diameters. A third identical conducting sphere C is uncharged. SPhere C is first touched to A, then to B, and finally remov

Charge problems

Please give step by step solutions without skipping details to solve and give the answers please! QUESTION GIVEN: 1) In the figure, a central particle of charge -q is surrounded by two circular rings of charged particles. What are the magnitude and direction of the net electrostatic force on the central particle due to th

Charge on Amber

Two small charged pieces of amber experience a force when they are separted by a distance R. If the charge on each of the bodies is tripled and the separation between them is halved, what is the ratio of the new force to the original force between them?

Electric Potential and Four Point Charges

Four point charges q = +3.6 uC are arranged in a square of edge length 2.0 cm. What is the electric potential at the center of the square? What is the electric potential at the midpoint of one edge?

Density of Fluids

The fluid in a lead storage battery for a car has a specific gravity of 1.30, when it's fully charged and 1.15 when it's discharged. By how much does the density of the fluid change when the battery is completely run down?

Electric Field for a Spherical Shell

A spherical shell with inner radius a and outer radius b has a total charge Q distributed uniformly throughout its volume with a charge density p. Calculate the resulting electric field for r < a, a < r < b, and b < r.

Electric Charge and Direction of Force

Four point charges with magnitude 5.0 uC are placed at the corners of a square that is 30 cm on a side. Two charges, diagonally opposites each other, are positive, and the other two are negative. What are the magnitude and the direction of the force on one of the charges?

Positive and Negative Charges

If a positive charge and a negative charge held near each other are released, what happens to the forces on each particle as they move?

Charged particles

There are two charged particles that repel each other with a force F. If the charge of one of the particles is doubled and the distance between them is also doubled, then what would the force be and why?

Electric Current Through a Lightbulb

The Current Through a Lightbulb in a flashlight is 0.750 A. a) How many electrons entered the filament every second? b) How many electrons exited the filament every second? c) Where do the electrons entering the filament come from? Where do they go after exiting?

Algebraic Expressions

1. Simplify: 8[a - b(3- 4a)] - 6a[2-a(3-b)] 2. Simplify: (6x2 - 3y + 2z2) + (7y + 8x2) + (3y2 - 4x) 3. Subtract 6x2 - 4y2 + 8xy from 9x2 + xy - 3y2. 4. Simplify 2 [(4x + 6) - (x - 6) + (4x - 8)/2] 5. Simplify the expression: 8 - [3x + 9y - {2x - y} + 8x + 5y] 6. Simplify 3(6x - 5) - [3(1 - 8x) + 5] 7. If P = 3y + 7x

Surface charge density

The normal of a spherical surface is r^. Just inside the surface, the electric field is E,in = 15 N/C r^ and just outside the surface the electric field is Eout = -25 N/C r^. What is the surface charge density of surface?

Relationship of Forces

With respects to forces, how are electric charge and mass alike? How are they different? I am not sure but does this have anything to do with Coulomb's Law??

The Net Electric Field

Question: Two charges, -18 and +4.0 microcoulombs, are fixed in place and separated by 3.0 meters. At what spot along a line through the charges is the net electric field zero? Locate this spot relative to the positive charge. Let the positive charge be at x=0 and the negative charge be at x=3.0 meters. Make sure the answer is i

Elecrostatic force

An equilateral triangle has sides of 0.12 meters. Charges of -8.6, +8.0 and +1.6 micro Coulombs are located at the corners of the triangle. Find the magnitude of the net electrostatic force exerted on the 1.6 micro Coulomb charge.

Electrostatic Force

If the electrostatic force between two protons is equal to 1X10^-7 Newtons, what is the distance between them?

Electricity Problem

Two identical +7.5e-6 point charges are intially spaced 5.5cm from each other. If they are realesed at the same instant from rest, how fast will they be moving when they are very far away from each other? Assume they have identical masses of 1.0 mg.


A certain charge Q is divided into two parts q and Q-q. How the charges Q and q must be related so that when q and (Q-q) placed at a certain distance apart experience maximum electrostatic repulsion.