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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?
A polar bear starts at the North Pole. It travels 1.0 km south, then 1.0 km east, then 1.0 km north, What was the bear's average speed
The total charge that an automobile battery can supply without being recharged is given in terms of Ampere-hours. If each of the two headlights draws 1.7 A , find out the time before your battery is "dead"
A 3.00 kg steel ball strikes a massive wall at 10.0 m/s at an angle of ? = 60.00 with the plane of the wall. what is the average force exerted by the wall on the ball
A person on earth notices a rocket approaching from the right at a speed of 0.83c and another rocket approaching from the left at 0.64c. What is the relative speed between the two rockets
An initially uncharged 4.53x10-6 F capacitor and a 7250 ohm resistor are connected in series, Calculate the circuit's time constant
Three balls are constrained to move on the circumference of a circle of radius R. find the characteristic frequencies of the system
What is an acceleration of two falling sky divers (mass 100.0 kg including parachute) when the upward force of air resistance is equivalent to one-fourth of their weight. How fast would the father be moving.
A generator rotates at 95Hz in a magnetic field of 0.025T . It has 650 turns and produces an rms voltage of 180V, What is the peak current produced
Using Newton's Version of Kepler's Third Law II Part A Pluto's moon Charon orbits Pluto every 6.4 days with a semimajor axis of 19,700 kilometers. Calculate the combined mass of Pluto and Charon. Express your answer using two significant figures. ..
A uniform steel beam has a mass of 1640 kg. On it is resting half of an identical beam. What is the vertical support force at each end.
Consider an equilateral triangle 12cm on a side. If a charge of 6*10^-5 C is placed at each vertex, find the force on the top charge
The ball curves because it is spinning at an average angular velocity of 370 rev/min (assumed constant) on its way to the catcher's mitt. Illustrate what is the angular displacement of the baseball (in radians) as it travels from the pitcher to t..
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