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You are given the job of evaluating potential power line systems. One system is designed to operate at V = 3500 V, and another would operate at V = 7500 V. Suppose the power line at the higher voltage would dissipate 3.5 % of the power that it carries. What percentage of the power would be dissipated in the low-voltage power line?
An electrical generating plant operates a boiler at a temperature of 220 C, What is the maximum theoretical efficency of the plant
Two carts are involved in an elastic collision. The dynamics cart A with mass 0.550 kg hits the collision cart B with mass 0.550 kg (initially at rest). What is the final kinetic energy of the system
A man is riding on a flatcar traveling at a constant speed of 9.10, When the ball leaves the man's hands, what is the direction of its velocity relative to the frame of reference of the flatcar
Two point charges Q1 = -25 micro Coulombs and Q2 = +50 micro Coulombs, are separated by a distance of 12 cm. The electric field at the point P is zero. How far from Q1 is P?
At a particular instant a proton is traveling in the -y direction, with speed 4105 m/s. What is the magnitude of the magnetic force on the proton
An electrical motor can accelerate a ferris wheel whose moment of inertia is 20,000 kg-m^2 from rest to 10 rev/min in 12 sec. When the motor is turned off, the ferris wheel slows down from 10 to 8 rev/min in 10 sec due to frictional losses.
The wire is located in a uniform magnetic field B directed perpendicular to the wire. Compute the magnitude of B when the force on the wire due to B is 0.200 N.
water flows at 0.20ls through a 8.0-m-long garden hose 2.5cm in diameter that is lying flat on the ground. the
in an echolocation lab a student measures the time from the first click of the fingers to the first echo to be 0.0062.
question1you hold a brick at rest in your hand. a how numerous forces act on the brick? b recognize these forces. c are
An aluminum wire with a diameter of 0.105 mm has a uniform electric field of 0.295 V/m imposed along its entire length, What is the drift speed of the conduction electrons
A zone plate is to be set up on an optical bench , where it will be used an an enlarging lens. find the focal length of the zone plate
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