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A high-voltage transmission line with a resistance of 0.32 /km carries a current of 1000 A. The line is at a potential of660 kV at the power station and carries the current to a city located 163 km from the station.
What is the power loss due to resistance in the line? (in W)
What Fraction of the transmitted power does this loss represent? (%)
A Hall probe serves to measure magnetic field strength. Such a probe consists of a poor conductor 0.171 mm thick, evaluate the magnetic field strength
In an amusement park ride called The Roundup, passengers stand inside a 19.0 m -diameter rotating ring. What is the longest rotation period of the wheel that will prevent the riders from falling off at the top
A 210 g piece of ice at 0°C is placed in 410 g of water at 22°C. The system is in a container of negligible heat capacity and is insulated from its surroundings. How much of the ice melts
An oil drop carries one excess electron and weighs 9.2 10-15 N. What electric field strength is necessary to suspend drop so it is motionless.
Air isn't a perfect electric insulator, but it has a very high resistivity of 3x10^13 omega*m. what fraction of the charge will flow across the air gap
What phase difference between two otherwise identical travelling waves, moving in the similar direction along a stretched string.
A car traveling at 21 {rm m/s} runs out of gas while traveling up a 25^circ slope. How far up the hill would it coast before starting to roll back down.
Ignoring the mass of the spring, what is the mass of the fish?
A digital camera has 10 megapixels and each pixel has a depth of 32 bits. In units of megabytes calculate how much storage is needed for one image
A solid wheel (solid cylinder) with mass 2.5 kg and a radius of 0.50 meter starts rotating from rest and has a constant angular acceleration of 2.5 radians/second^2 Determine the torque required to produce this motion
Write down an energy transformation equation
Fraternal twins Jack and Jill are sent in two different ships to fetch water from the planet Kusbane that is 20 lightyears away. Which twin is older
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