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Starting with the following equations that describe the electric and magnetic fields for a region of space with no charge or current.
∂B/∂x = -μ0ε0
∂E/∂x = -∂B/∂t
a. Show that the magnetic field B obeys the travelling wave equation.
b. What is the speed that B travels? (Show the part of the travelling wave equation that allows you to determine this speed.)
You're an optometrist, mounting a projector at the back of your 4.2m -long exam room, 2.6 m above the floor. At what height should you center the pattern on the wall
a 2.0mm length of a wire is made by welding the end of a 120-cm-long silver wire to the end of an 80-cm-long copper
What is the gas pressure after a long time has elapsed? You can assume that the containers themselves are nearly mass-less and do not affect the outcome.
a car moving with constant acceleration covered the distance between two points 60 m apart in 6 s. its speed as it
*Pulleys introduce a possible source of error because of their possible friction. Given that they are a source of error, why are the pulleys used at all?*To determine the force acting on each mass it was assumed that g=9.80m/sec2. The value of g at t..
A gymnast of mass 52.0kg hangs from a vertical rope attached to the ceiling, calculate the tension T in the rope if the gymnast hangs on the rope
Coherent light with wavelength 595 nm passes by two very narrow slits, and the interference pattern is observed on a screen a distance of 3.00 {rm m} from the slits. The first-order bright fringe is a distance of 4.84 {rm mm} from the center of th..
A golf ball is dropped from rest from a height of 9.70 m. It hits the pavement, then bounces back up, rising just 6.00 m before falling back down again. calculate the total amount of time that the ball is in the air
A certain gyroscope consists of a uniform disk with a 56 cm radius mounted at the center of an axle that is 13 cm long and of negligible mass. what is the precession rate
q1. a propeller spins at 1780 revmin.a what is an angular velocity in rads?b what is an angular displacement of the
The Promises and Perils of Nuclear Power
A 400 kg piano is being lowered into position by a crane while two people steady it by ropes pulling to the sides. Bob's rope pulls to the left, 15 degree below horizontal, by 380 N of tension. Ellen's rope pulls toward the right, 25 degree below hor..
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