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A high-voltage transmission line with a resistance of 0.30 /km carries a current of 1050 A. The line is at a potential of 680 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?
What is an electric field between the plates? Towards which plate is it directed.
Two particles with masses m and 3m are moving toward each other along the x axis with the similar initial speeds vi. Particle m is traveling to the left, while particle 3m is traveling to the right.
An automobile with a mass of 940 kg goes around a curve with a radius of 64m.The coefficient of friction between the tires and the road is 0.700. Illustrate what is the maximum speed with which the car can go around the curve ?
A catcher stops a ball traveling at 28.0 m/s in a distance of 55.30 cm and feels a force of 313 N against his glove. What is the mass of the ball.
A loop of diameter 15 cm is placed in a uniform electric field of magnitude 6.0 102 N/C. (a) What is the electric flux through the loop when the electric field is perpendicular to the plane of the loop? N·m2/C.
A train is travelling up a 4.5 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast without friction. a) How long does it take for the last car to come to rest momentarily? b) How far did the last car travel befo..
A force vector has a magnitude of 569 newtons and points at an angle 41o of below the positive x axis. What is (a) x scalar component and (b) y scalar component of the vector.
suppose that all the energy goes into the arrow, with what speed does the arrow leave the bow.
A fish hanging from the bottom of the spring oscillates vertically at a frequency of 2.55Hz, Ignoring the mass of the spring, what is the mass m of the fish
A car rounds a banked curve. The radius of curvature of the road is R .the banking angle is a. the coefficient static friction is f.
A 20.00 kg wood ball hangs from the 1.10 long wires. The maximum tension the wire can withstand without breaking is 600 N. A 0.710 kg projectile travelling horizontally hits and embeds itself in the wood ball. What is the largest speed this projectil..
What is the acceleration of a 1.00 gram drop of blood in the finger tips at the bottom of the swing? Find out force that the blood vessel must exert on the drop of blood in part (a)
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