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A square plate of copper with 47.0 cm sides has no net charge and is placed in a region of uniform electric field of 79.0 kN/C directed perpendicularly to the plate.
(a) Find the charge density of each face of the plate.
(b) Find the total charge on each face.
How much energy is necessary to bring the system back
An AC series circuit has 12.0 ? resistance, 15.00 ? inductive reactance and 10.00 ? capacitive reactance. obtain the power output
A 500 turn solenoid with a length of 20 cm and a radius of 3.0 cm carries a current of 3.0 A. A second coil of four turns is wrapped tightly about this solenoid so that it can be considered to have the same radius as the solenoid. Find when the curre..
A skier of mass 80 kg starts from rest and slides down a frictionless slope of length 35 m that is inclined at an angle of 30 degrees with the horizontal. Calculate the work done by gravity on the skier, and the work done by the normal force on the..
The thrust produced by a single jet engine creates a force of F = 63000 N. It takes the jet (with a mass of m = 9300 kg) a distance of d = 0.75 km to take off. What is the take-off speed of the jet vt in m/s
A particle of mass m moves next to the x axis. Its position varies with time according to x=(3m/s^3)t^3-(4m/s^2)t^2.
A car is driving directly north on the freeway at a speed of 117 km/h and a truck is leaving the freeway driving 76 km/h in a direction that is 40° west of north. What is the velocity of the truck relative to the car?
Four point charges, Q1(-15,0,15), Q2(15,0,15), Q3(15,0,-15) and Q4(-15,0,-15) in cartesian coordinates are surrounded with air. If charges Q2 = -Q3 = 2 microCoulomb, Find the forces applied to each point from other charges
The fringes observed in a double-slit interference experiment when the two slits are illuminated by white light show dispersion of both light and color, how many bright fringes can be seen on the screen
There are two identical, positively charged conducting spheres fixed in space, find the initial charge on each sphere, q1 and q2 if initially q1
Two converging lenses, each of focal length 14.5 cm, are placed 39.1 cm apart, and an object is placed 29.2 cm in front of the first. What is the magnifcation of the system
An object is lifted vertically 2m and held there. If the object weighs 30N, how much work was done in lifting it. Describe it briefly.
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