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A high power line operates at a maximum ac voltage of 150,000 V.
(a) What is the Vrms?
(b) This primary line is connected to a transformer. The primary has 450,000 turns. What is the number of coils on the secondary if the Vrms delivered to the user is to be 110V.
A 2100 kg car moving east at 10 m/s collides with a 3000 kg car moving north. The cars stick together and move as a unit after the collision, at an angle of 35 ° north of east and at a speed of 5.03 m/s. Find the speed of the 3000 kg car before th..
The latent heat of fusion
Two large, parallel, conducting plates are 26cm apart and have charges of equal magnitude and opposite sign on their facing surfaces. An electrostatic force of 2.8 x10-15 N acts on an electron placed anywhere between two plates.
While driving on the freeway at 110 km/h, you pass a truck whose total length you estimate at 25 m. A. If it takes you, in the driver's seat, 6.0s to pass from the rear of the truck to its front, what is the truck's speed relative to the road? ..
The temperatre result in each measurement are listed below, write down the formula for mean and calculate the temperature mean value
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hours to go around the earth. What is the force of gravity on this satellite
Calculate the number of coulombs of positive charge in 285 cm3 of (neutral) water. (Hint: A hydrogen atom contains one proton; an oxygen atom contains eight protons.)
A charge of 0.99 C is spread uniformly throughout a 18 cm rod of radius 4 mm. What are the volume and linear charge densities?
Consider a series RLC circuit with R = 15 , L = 184 mH, C = 75 µF, and a maximum voltage of 141 V. What is the resonance frequency of the circuit
A horizontal uniform bar of mass 2.7 and length 3.1 is hung horizontally on two vertical strings. String 1 is attached to the end of bar, and string 2 is attached a distance 0.7 from other end. A monkey of mass 1.6 walks from one end of the bar to th..
2150 kg satellite is in a circular orbit 780 km (780 x 103 m) above the surface of the earth. What is the speed of the satellite in its orbit
The length of a moving spaceship is 29.4 m according to an astronaut on the spaceship. compute the speed of the spaceship
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