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A high-voltage transmission line with a resistance of 0.285 ohm/km carries a current of 1.30 kA. The line is at a potential of 800 kV at the power station and carries the current to a city placed 147 kilometer from the power station.
A) Find the power loss due to resistance in the line?
B) Find what fraction of the transmitted power does this loss represent?
A particle of charge +2.56 x 10-6 C is 12.4 cm distant from a second particle of charge -1.55 x 10-6 C. Calculate the magnitude of the electrostatic force between the particles
Each of the electrons in the beam of a televisiontube has a kinetic energy of 15.0 keV. The tube is oriented so thatthe electrons move horizontally from north to south. The verticalcomponent of Earth's magnetic field points down and has a magnitud..
A Ferris wheel is moving at an initial angular velocity of 1.0 rev/54 s. If the operator then brings it to a stop in 3.4 min, what is the angular acceleration of the Ferris wheel
Two identical cylindrical vessels with their bases at the samelevel each contain a liquid of density 1.15 g/cm3. Find the work done by the gravitational force
The speed of oxygenated blood in the artery of a healthy person is measured to be 0.12 m/s. by what percent has the artery area been blocked by plaque
An unknown substance has a mass of 0.125 kg and an initial temperature of 77.5°C. calculate the specific heat of the unknown substance
the mass of the calculator is 24 grams and the coefficient of kinetic friction is 0.5. if it comes to rest after 0.9
An object has a total energy of 5.60 × 1015 J and a kinetic energy of 1.40 × 1015 J. find the magnitude of the object's relativistic momentum
A 60.0-kg projectile is fired at an angle of 30.0° above the horizontal with an initial speed of 1.36 102 m/s from the top of a cliff 162 m above level ground, obtain the initial total mechanical energy of the projectile
A solid cylinder with a radius of 25 cm and a mass of 4.4 kg is rotating counterclockwise with an angular speed of 0.5 revoultions per second just above a flat surface. What torque due to friction is exerted on the cylinder
A heat pump has a coefficient of performance of 3.90, How much energy does it deliver into a home during 12 h of continuous operation
How fast should a moving clock travel if it is to be observed by astationary observer as running at one-half its normal rate?
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