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A high-voltage transmission line with a resistance of0.310 Ω/km carries a current of 970. A, starting at 660.kV for a distance of 162 km.
a) Compute the power loss due to resistance in the line.
b) Compute the fraction (percent) of the transmitted power that this loss represents.
A uniform narrow tube 1.79 long is open at both ends. It resonates at two successive harmonics of frequencies 285 and 342. What is the speed of sound in the gas in the tube
The potential difference across a cell membrane form outside to inside is initially at -90 mV (when in its resting phase). How many ions move through the membrane
An 8.5kg crate is pulled 4.8m up a 30 degree incline by a rope angled 16 degrees above the incline. What is the increase in thermal energy of the crate and incline
A 2.0kg wood block is launched up a wooden ramp that is inclined at a 27? angle. What speed does it have when it slides back down to its starting point
Using a 673-nm wavelength laser, you form the diffraction pattern of a 0.109-mm wide slit on a screen. How far is the screen located from the slit
A steel tank contains 314 g of ammonia gs (NH3 with molar mass 17.0 g/mol) at a pressure of 1.55 x 106 and a temperature of 51.4oC. What is the volume of the tank in liters
The passengers in a roller coaster car feel 50% heavier thantheir true weight as the car goes through a dip with a 40.0 m radius of curvature. What is the car's speed at the bottom of the dip
A converging lens with a focal length of 88.0 cm forms an image of a 3.20cm -tall real object that is to the left of the lens. Where are the object and image located in relation to the lens
suppose that you are climbing a hill whose shape is given by the equation z 1000 - 0.01x2 - 0.02y2 and you are
A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from same point at t = 190 ms. (a) How far below the release point is the center of mass of two stones at t = 390 ms? (Neither stone has yet reached the gr..
A creamy salad dressing is made up of heavy cream, corn oil, If the cream layer is 2.20×10?2 m tall, the oil layer 2.80×10?2 m tall, and the vinegar layer 8.000e-3 m tall, what is the gauge pressure at the bottom of the jar
The sound level measured 5.2 m away from a jet engine is 140 dB. At what distance is the sound level exactly half
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