Griffiths problem 2.31, work and energy in electrostatics. Configuration of charges.
The intensity of sunlight at the top of the Earth’s atmosphere is about 1390 W/m2. The distance between the Sun and the Earth is 1.50×1011m, whle that between the Sun and Mars is 2.28 ×1011m. What is the intensity of sunlight at the surface of Mars?
I am trying to figure out the charge q on two seperate but equal in magnitude spheres with the same mass, m. The question is as follows: 2 small speres with mass m = 15.1 g are hung by silk threads of length L = 1.21 m from a common point. When the speres are given equal charges, so that q_1 = q_2 = q, each thread hangs at ...continues
Electric Potential and Electric field
(See attached file for full problem description with diagram) (1) Two point charges, Q1 = +2 x 10-6 C and Q2 = -3 x 10-6 C, are situated as shown. (Refer to the attached file to view the diagram) (a) Find the electric potential at point A and at point B. (b) Find the work needed to move a point charge Q3 = 5 x 10-6 C f ...continues
An engineer plans to light a train by utilizing the emf induced in the axles of the train running on the tracks. a. If the downward component of the earth’s magnetic field is 0.6 X 10^-4 T, and the tracks are 1.5m apart, how large is the emf produced between the tracks by a train traveling at 40 m/s? b. Could this voltag ...continues
Electromagnetic Theory - Relativity
Two cultures of a certain bacteria each consist initially of just one bacterium. This strain of bacteria is known to double in number of every 24 hours. One culture is left on earth and the other is placed on a rocket that travels at 13/15 c relative to Earth. At a time when the culture on earth has grown to 256 bacteria, ho ...continues
Coloumbs Law as applied to three charges
In this simulation, the red green and blue charges are originally at the vertices of an isosceles triangle. The green and blue are fixed in space and the red charge is allowed to move. Find the Net Coulomb force (magnitude and direction) on the red object due to the green and blue charged objects after 1.00s has elapsed. See ...continues
Charged object moving in a capacitor
solve for || See attached file for full problem description.
Consider a bike moving with a speed of 0.80 past a stationary person. If the rider fires an object in the direction in which he is moving with a speed of 0.70 relative to himself, determine the speed of the ball relative to the stationary person.
A conductor consists of a circular loop of radius R and two straight, long sections. The wire lies in the plane of paper and carries a current I. Find an expression for the magnetic field at the center of the loop. See attached file for full problem description.
