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A high-voltage transmission line with a resistance of 0.33 omegacap.gif/km carries a current of 1040 A. The line is at a potential of 670 kV at the power station and carries the current to a city located 159 km from the station.
(a) What is the power loss due to resistance in the line?
(b) What fraction of the transmitted power does this loss represent?
Two identical point charges (q = +6.90 x 10-6 C) are fixed at opposite corners of a square whose sides have a length of 0.45m. A test charge (q0 = -3.20 x 10-8 C), with a mass of 5.20 x 10-8 kg, is released from rest at one of the corners of the s..
A freight company uses a compressed spring to shoot 1.7 kg packages up a 1m high frictionless ramp into a truck. The spring constant is 241 N/m and the spring is compressed 33 cm.
A sealed cubical container 22.0 cm on a side contains three times Avogadro's number of molecules at a temperature of 20.0°C
a 3.95 mol sample of an ideal diatomic gas expands adiabatically from volume of 0.1820 m3to 0.710m3, Determine the initial and final temperatures
A laser beam aimed from the earth is swept across the face of the moon. at what speed does the laser light move across the moon's surface
Coherent light from a sodium-vapor lamp is passed through a filter that blocks everything except for light of a single wavelength. find the wavelength of the light that falls on the slits
A 9.0-kg box of oranges slides from rest down a frictionless incline from a height of 5.0 m, What is the coefficient of kinetic friction, µk, of the surface from A to B
A 0.33-m-long violin string has a mass of 0.89 g. The peg exerts a 45 N force on it. Determine the lowest frequency sound produced by the vibrating sting
A girl on a sled coasts down a hill. Her speed is 7.60 m/s when she reaches level ground at the bottom. The coefficient of kinetic friction between sled's runners and the hard, icy snow is 0.04, and the girl and sled together weigh 644N.
A railroad car of mass 2.58 104 kg is moving with a speed of 3.88 m/s. It collides and couples with three other coupled railroad cars, What is the speed of the four cars after the collision
A 57 gram tennis ball is served at 45 meters per second. If the ball started from rest what impulse was applied to the ball by the racket
An ocean liner leaves New York City and travels 18.0° north of east for 232 km. How far east and how far north has it gone? In other words, what are the magnitudes of components of the ship's displacement vector in the following directions.
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