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If the index of the surrounding cladding is 1.23, what is the critical angle for total internal reflection for a light ray in the core incident on the core-cladding interface? Express the answer in
The index of refraction of the core of a piece of fiber optic cable is 1.76. If the index of the surrounding cladding is 1.23, what is the critical angle for total internal reflection for a light ra
A straight, nonconducting plastis wire 8.5 cm long carries a charge density of +175nC/m distribute uniformly along its lenght. It is lying on the horizontal tabletop.
A microscope with an 9.0 mm focal-length objective has a tube length of 14.0 cm For the microscope to be in focus, how far should the objective lens be from the specimen?
A 40 figure skater is spinning on the toes of her skates at 0.60 . Her arms are outstretched as far as they will go. In this orientation, the skater can be modeled as a cylindrical torso (35 , 20 av
If the field decreases at the rate of 0.490 T/s in some time interval, what is the magnitude of the emf induced in the loop during this interval?
If third charge q3=6.00 nC is now placed at the point x=4.00 cm, y=3.00cm , find the x- and y- component of the total force exerted on this charge by the other two.
A uniformly charged sphere, which carries a total charge Q, radius R, is rotating along z axis with an angular speed ?. Find the ratio of magnetic dipole moment, m and its mechanical angular momentu
How much fuel would it take to provide this much energy if all the rest energy of the fuel could be transformed to kinetic energy of the spaceship? (kg)
A charge q is placed at the centre of the shell. What is the surface charge density on the inner and outer surfaces of the shell?
A 600 pF capacitor is charged by a 200 V supply. It is then disconnected from the supply and is connected to another uncharged 600 pF capacitor. How much electrostatic energy is lost in the process?
A ball is thrown vertically upwards into the air. It rises a vertical distance of 3.1 m before falling to the ground. Assuming that all of the ball's initial kinetic energy is converted into gravita
Determine the charge on each capacitor if the combination is connected to a 100 V supply.
Three capacitors each of capacitance 9 pF are connected in series. (a) What is the total capacitance of the combination?
A spherical conductor of radius 12 cm has a charge of 1.6 x 10-7C distributed uniformly on its surface. What is the electric field
A regular hexagon of side 10 cm has a charge 5 µC at each of its vertices. Calculate the potential at the centre of the hexagon.
Verify this result for the simple configuration of two charges of the same magnitude and sign placed a certain distance apart.
A 0.300 kg croquet ball makes an elastic head-on collision with a second ball initially at rest. The second ball moves off with half the original speed of the first ball.
A hollow charged conductor has a tiny hole cut into its surface. Show that the electric field in the hole is, where is the unit vector in the outward normal direction, and is the surface charge den
What are the force and torque experienced by a system having a total dipole moment equal to 10-7 Cm in the negative z-direction?
A 13 g bullet traveling 222 m/s penetrates a 2.0 kg block of wood and emerges cleanly at 159 m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bulle
As the driver pushes the throttle forward, the skier accelerates. A 74.4-kg water-skier has an initial speed of 5.5 m/s. Later, the speed increases to 12.5 m/s. Determine the work done by the net ex
(a) What is the net charge inside the box? (b) If the net outward flux through the surface of the box were zero, could you conclude that there were no charges inside the box? Why or Why not?
How much work is done by the muscle in stretching the tendon 0.44 cm as the force increases from 2600 N to 4600 N?