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Electric Field of Spherically Symmetric Charge Distribution

Please help with calculation steps. A spherically symmetric charge distribution produces the electric field E = (5700r^2) N/C, where r is in m a) what is the electric field strength at r = 25.0 cm? b) What is the electric flux through a 34.0-cm diameter spherical surface that is concentric with the charge distribution? c)

Charged concentric spheres

Please see attached file for full problem description. A conducting sphere with radius a = 0.31 m has a net charge Qa = +4.5 µC. A thin, non-conducting spherical shell of radius b = 0.95 m surrounds the sphere and is concentric with it. This shell has a net charge Qb = +1.5 µC distributed uniformly over its surface. The ele

Charged Discs

Two 10-cm-diameter charged disks face each other, 20 cm apart. The left disk is charged to - 50nC and the right disk is charged to + 50nC. a) What is the magnitude of the electric field vector in N/C at the midpoint between the two disks? b) What is the magnitude of the force F vector in N on a - 1.0nC charge placed at the m

Electric potential

1) Please refer attachment. 2) What are (a) the charge and (b) the charge density on the surface of a conducting sphere of radius 0.15m whose potential is 200V ( with V = 0 at infinity)?

Consider two widely separated conducting spheres: Find the final charges; ratio of final surface charge density of sphere

Consider two widely separated conducting spheres, 1 and 2, the second having three times the diameter of the first. The smaller sphere initially has a positive charge q = 7.00×10-6 C, and the larger one is initially uncharged. You now connect the spheres with a long thin wire. How are the final potentials V1 and V2 of the spher

Charge on a Sphere and Electrons

Two identical metal spheres A and B are connected by a plastic rod. Both are initially neutral. 9.80×10^12 electrons are added to sphere A, then the connecting rod is removed. Afterward, what is the charge of A in nC?

Electric field of Plastic Pipes

A plastic pipe has an inner radius of a = 31.00 cm and an outer radius of b = 68.00 cm. Electric charge is uniformly distributed over the region a < r < b. The charge density in this region is 42.00 C/m3. Calculate the magnitude of the electric field at r = 0.29 m. Calculate the magnitude of the electric field at r = 0.57 m. C

Forces that don't depend upon physical contact

What two forces doesn't depend upon physical contact? (I was thinking "gravity" and "magnetism" are the answer, but I am not sure. )

Net Electric Force

If we were to use a horizontal line that is supposed to be the x coordinate: What is the x-coordinate (in m) of the point at which the net force on a .3 uC point charge is zero? Charge 1 is 4.5 uC and is located at the coordinate x1=-6m; charge 2 is 5.68 uC and is at x2= 11.6 m.

Matlab function of electric field by multiple point charges

See attachment for full description Computing the electric field due to multiple point charges obeys Write a MATLAB function get_efield_points that accepts the charge magnitudes {q1,q2,...qn}, the desired location of the electric field intensity, and the Cartesian coordinate vectors for each point charge in the system. Th

Electrostatic Charges of Isolated Spheres

Conducting Spheres Problem 4. Identical isolated conducting spheres 1 and 2 have equal charges and are separated by a distance that is large compared with their diameters (a). The electrostatic force acting on sphere 2 due to sphere 1 is F. Suppose now that a third identical sphere 3, having an insulated handle and initi

Electron potential of spherical conductor

Find the electron potential inside and outside of a spherical conductor of radius R = 15 cm carrying a charge Q = 10^-9 C. Evaluate your results for f = 5 cm and r = 20 cm, assuming V = 0 at infinity. Sketch the potential as a function of r. What is the capacitance of the conducting sphere?

Potential Difference for Protons

(a) Find the potential at a distance of 1.00 cm from a proton. (b) What is the potential difference between two points that are 1.00 cm and 2.00 cm from a proton. Repeat parts (a) and (b) for an electron.

Capacitance Example Problems

What is the capacitance of two rectangular plates, length 5 cm and width 3 cm, and separation distance of 0.03 mm? What potential will exist across the capacitor if the charge on the capacitor is 8.85 nC? How many excess electrons will be on the negative plate? After the number of excess electrons are found, what ene

Electric field of a charge inside hollow conducting sphere

(See attached file for full problem description) A hollow grounded conducting sphere of radius a contains a point charge Q at the radius b as shown in the figure (see attachment) a) Show that the field inside the sphere is the same as if there were no sphere and, instead, a charge Q' = -(a/b)Q at D = (a/b)a. You can prov

Point Charge Above a Conducting Plate

A point charge Q lies at a distance D above a large grounded conducting plate. a) Calculate the surface charge density induced on the plate as a function of the radius r from the foot of the perpendicular drawn from the charge. b) Show that the total induced charge is -Q.

Electrical charge

A small charged sphere of mass 0.200 g is suspended by a string in an electric field of 500 N/C. The string makes an angle of 30 degrees with respect to the vertical. What is the charge on the sphere? (Sum of F = 0)

An electron is fired at a given speed, at a given angle between two parallel conducting plates at specified potential difference. To determine how close the electron will get to the bottom plate, and where the electron will strike the top plate.

An electron is fired at a speed of vo= 5.6x10^6m/s and at an angle of -45 degrees between two parallel conducting plates that are D=2.0mm apart. If the potential difference between the plates is V= 100V, determine: a) How close "d" the electron will get to the bottom plate, and b) Where the electron will strike the top plate

Gauss' law-Electric field due to a charged hollow spherical shell

A hollow spherical shell carries charge density p = k / r^2, in the region a<=r<=b. Find the electric field in i) the region a< r< b. ii) r> b ---------------------------------------------------------------------------------------- I actually know how to find the E-Field, I'm having trouble with finding the enclosed charge.

Electric Potential Difference Magnitude and Sign

Location A is 3.00 m to the right of a point charge q. Location B lies on the same line and is 4.00 m to the right of the charge. The potential difference between the two locations is Vb-Va= 45.0 V. What is the magnitude and sign of the charge?

Colomb's Law in a vacuum of two particles

In a vacuum, two particles have charges of q1 and q2, where q1=+3.5 microcolombs. They are separated by a distance of 0.26 m, and particle 1 experiences an attractive force of 3.4 N. What is the magnitude and sign of q2?

metallic and electrically neutral

Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -3.0 x 10^-6 C. Object B is identical to object A and is also electrically neutral. It is charged by induction so that it acquires a charge of +3.0 x 10^-6 C. What is the difference in mass between the charged objects an

Problem 1 : An electric field points every where in direction z. To determine partial derivatives with respect to x, y and z and to sketch lines for one possible and one impossible field.Problem 2 : Given electric field near earth's surface, to determine the charge on the earth.

See attached for full problem description.

Physics Questions (Multiple Choice)

Question 1: If there is a force of 5.0 x 10-12 N acting to the left on an electron, the electric field intensity at the location of this electron will be: a. zero. b. 8.0 x 10-31 N/C to the left c. 3.1 x 107 N/C to the left d. 3.1 x 107 N/C to the right e. none of these Question 2: In one mole or 18 grams of

Economies of Scope/Logistics/Break Even

9. (a) What is the meaning of economies of scope? How do they differ from economies of scale? (b) What do learning curves show? How do they differ from economies of scale? What is the usefulness of learning curves as a managerial tool? What is the reason for rising international trade in inputs and the use of foreign trade in in

Find the probability that they meet again after N steps.

This is from Reif's Statistical and Thermal Physics: Two drunks start out together at the origin, each having equal probability of making a step to the left or right along the x-axis. Find the probability that they meet again after N steps. It is to be understood that the men make their steps simultaneously. (It may be helpf

electric field along central axis of uniformly charged ring

Charge is uniformly distributed around a ring of radius R= 2.40 cm and the resulting electric field magnitude E is measured along the ring's central axis ( perpendicular to the plane of the ring). At what distance from the ring's center is E maximum? In this question, I end up with E(total) = (q * z) / 4*Pi * e * (R^2 + z^2)

Defibrillator Passing Amps

A defibrillator passes 18 A of current through a persons torso in 2.0 ms. 1) How much charge moves during this time? 2) How many electrons pass through the wires connected to the patient?

Electricity and Magnetism (Ampere's Law)

1. The long, straight wire AB shown in Figure (Please see the attached file) carries a current of 14 A. The rectangular loop whose long edges are parallel to the wire carries a current of 5 A. Find the magnitude and direction of the net force exerted on the loop by the magnetic field of the wire. 2. A long straight solid cyli

Electric Field and Potential

Positive charge, Q, is distributed evenly along the y-axis between y=0 and y=a. A negative charge, -q is located on the x-axis a distance x from the rod. (a) Find the electric field at the location of the negative charge. (b) Find the potential at the location of the negative charge. (see attached file for diagram)