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A high-voltage transmission line with a resistance of 0.28 omegacap.gif/km carries a current of 1040 A. The line is at a potential of 650 kV at the power station and carries the current to a city located 158km from the station.
What fraction of the transmitted power does this loss represent? answer should be a percent.
What is acceleration due to gravity
When light is incident from air perpendicular to the surface of a certain medium, Find the speed of light in the medium
Average relative intensity of a person's voice is 58 dB. A microphone and amplification system increases the relative intensity to 70 dB. By what factor did the amplification system increase the sound intensity?
What speed would Michelson have computed for Earth's motion through the ether had the experiment seen a shift of one fringe
A 0.500-kg block rests on the frictionless, icy surface of a frozen pond. what is the minimum uncertainty in the block's speed
Two 480g blocks of wood are 2.0 m apart on a frictionless table. A 9.0g bullet is fired at 440m/stoward the blocks. What is the speed of the second block after the bullet stops
A 1.0--tall vertical tube is filled with 20o water. A tuning fork vibrating at 574 is held just over the top of the tube as the water is slowly drained from the bottom.
A solid cylider of mass 9.8 kg and radius 28 cm is yoked to a spring as shown. What is the angular frquency of the cylinder rolling back
A loudspeaker of mass 19.0 is suspended a distance of = 2.00 below the ceiling by two cables that make equal angles with the ceiling. Each cable has a length of = 3.30. Illustrate what is the tension in each of the cables?
A uniform magnetic field is perpendicular to the plane of a single-turn circular coil. What emf and current are induced in the square coil
A wave has the following properties: amplitude = 0.37 m, period = 68 s, wave speed = 13 m/s. What is the mathematical expression (similar to one of the following equations) for the wave
A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0 m cables attached to a vertical rotating pole, Find the speed of the chair
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