Electricity and Magnetism Answers

what is the electric potential 1.0m m assuming that the potential is zero at r=infinite

Two infinitely parallel plates have charges 1.6 microcoulomb per meter square and 2 microcoulomb per meter square if they are arranged close to each other what is the electric field

( A ) in the region outside the plates

(B) in between the page

Determine the electric potential at a point P which is 2.00 m from a point charge of -5.00µC.

The magnetic field unit:__() or __( )=__

Determine the magnitude and direction of the magnetic force on a proton

moving to the north at 8.6 x 104 m/s, as it enters a magnetic field of 1.2 T,

pointing vertically up, out of the page.

(the arrow is towards north)

An electron, with a mass of 9.1 x 10–31 kg and charge of 1.6 x 10–19 C, is

accelerated to a velocity of 4.0 x 106

m/s then enters a uniform magnetic field

of 5.0 x 10–3 T at an angle of 90° to the direction of travel.

a. What is the radius of the circular path it follows?

b. Through what potential difference was the electron accelerated?

Analysis of a rock sample shows that only 1/16 of the original amount of chlorine-36 remains in

the rock. Estimate the age of the rock given that the half-life of chlorine-36 is 3.0 x 105

a

Two 200 pounds lead ball are separated by the distance of 1 meter .both ball have sam positive charge q.what charge will produce in electrostatic force between the that is of the same order of magnitude as the weight of one ball.

A charge which has a magnitude of 18 nanoCoulomb produces an electric field. At a distance r the strength of Electric field is equal to . How far is the source charge from the charge?

. Consider a frame S

0 moving with a velocity v along its x

0 axis with respect to another frame

S. Also consider the axes of the two frames to be aligned at t = t

0 = 0

(a) First consider Galilean transformations. Write down the matrix which implements this

transformation.

(b) Now let us consider Lorentz transformations. Write down the matrix which implements

the above Lorentz transformation (also called a Lorentz boost).

(c) Suppose you have a Lorentz boost along x by a velocity vx followed by a boost along y

by velocity vy. What is the matrix for the successive transformations? Would one have

got the same matrix if the order of transformations were reversed? What does this say

about Lorentz transformations in general?