1) How many coulombs of positive charge are there in kg of carbon? Twelve grams of carbon contain Avogadro's number of atoms, with each atom having six protons and six electrons.

2) Three charges, each of magnitude nC, are at separate corners of a square edge of length 5 cm. The two charges at opposite corners are positive, and the other charge is negative. Find the force exerted by these charges on a fourth charge q = +3 nC at the remaining corner.

3) A charge of 4.0 C is at the origin. What is the magnitude and direction of the electric field on the x axis at (a) x = 6 m, and (b) x = -10 m? (c) Sketch the function , versus x for both positive and negative values of x. (Remember that is negative when E points in the negative x direction.

4) A point charge of +5.0 C is located at x = -3.0 cm, and a second point charge of -8.0 C is located at x = +4.0 cm. Where should a third charge of +6.0 C be placed so that the electric field at x = 0 is zero?

5) An electron with kinetic energy of 2 x J is moving to the right along the axis of a cathode-ray tube. There is an electric field =(2 x N/C) in the region between the deflection plates. Everywhere else, = 0. (a) how far is the electron from the axis of the tube when it reaches the of the plates? (b) at what angle is the electron moving with respect to the axis? (c) at what distance from the axis will the electron strike the fluorescent screen?

It provides examples involving the electric field and electric force of point charge. The solution is detailed and has a '5/5' rating from the student who posted the questions.

See attached file for full problem description.
1. What is the force on the 5 nC charge
2. What is the force on the 1 nC charge at the bottom? Fx, / Fy=?
3. Charge q2 is in static equilibrium. What is q1 in nC?

Problem 1
A charge is moved from one place to another in an electricfield. In which of the following situations will the change in potential energy be NON-ZERO?
the charge is only moved perpendicular to all electricfield lines that it crosses
the charge remains unmoved
the charge is moved along an equipotential surfa

Please help with the following problems.
1. In the figure, two charges q1=+3.0uC and q2=-2.0uC are separated by 6.0cm.
a. Find the electricforces exerted on each other (magnitude and direction)
b. Find the electricfield from point P, which id 4.0cm to the right q2 (megnitude and direction).
c. Find the positions along t

Q7: A Line with 2 Charges
Two equal and opposite charges are located on the x-axis. Which of the following statements are true about the electric potential and the electricfield in the region surrounding the two pointcharges (at points A,B,C,D)?
1. T/F At point A, the electricfield is zero.
2. T/F At point C, the electr

Show how an undeflected trajectory for a moving charge is obtained with appropriate crossed E and B fields. Draw seperate diagrams to illustrate your answer for a positive chargeand a negative charge.

A pointcharge, q1 = -4.00 nC, is at the point x= 0.60 m, y= 0.80 m. A second pointcharge, q2 = +6.00 nC, is at the point x= 0.60 m, y= 0 m.
Calculate the magnitude of the net electricfield at the origin due to these two pointcharges.
Calculate the direction of the net electricfield at the origin due to these two po

The electricfield is defined as the electrostatic force divided by the charge experiencing this force. The Earth's electricfield is directed radially inward and is about 150 N/C at the Earth's surface. This arises because in a region of the atmosphere known as the ionosphere, parts of the spectrum of the radiation from the sun

See the attached file.
The dashed lines in the diagram represent cross sections of equipotential surfaces drawn in 1-V increments.
a) What is the work W_AB in J done by the electricforce to move a 1-C charge from A to B?
b) What is the work W_AD in J done by the electricforce to move a 1-rm C charge from A to D?
c)

1- Calculate the force (direction and magnitude) on Q3 due to two other charges shown in the figure.
2- What is the magnitude of the electricfield experienced by an electron in the hydrogen atom? In the ground state, their average separation is one Bohr radius (0.53x10^(-10) m).