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A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). The transformer is to deliver1100kW to the factory at84%efficiency. Find values for the following.
(a) the power delivered to the primary
kW
(b) the current in the primary
A
(c) the current in the secondary
It took 1 sec for 1000 coulombs of charge flows through a resistor in circuit. How much current flowed through the rsistor
At a distance of 60.0 km from a radio station antenna the electric-field amplitude is 7.60×10?2 V/m. what is the total power output of the station
Suppose that when a 12.0-V battery drives a current of 6.7 A through a resistive device, How much is the internal resistance (in ohms) of the 12.0-V battery
A 821 kg car is going 29 m/s and the driver has to slam on his brakes to prevent an accident. what is the change in temperature of the brake pads and rotors
Speedboat A negotiates a curve whose radius is 198 m. Speedboat B negotiates a curve whose radius is 290 m. Each boat experiences the same centripetal acceleration. What is the ratio vA/vB of the speeds of boats.
batted straight back to Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for .050 s, illustrate what is the impulse experienced by the ball.
Two water waves meet at the same point, one having a displacement above equilibrium of 60 cm, what is the resulting displacement above equilibrium
A proton accelerates from rest in a uniform electric field of 690 N/C. At one later moment, its speed is 1.30 Mm/s, What is its kinetic energy at the end of this interval
How much would an 80.0kg person weigh) on mars where an acceleration of gravity is 3.93m/s^2 and (b) on earth's moon where the acceleration of gravity is 1.63m/s^2.
Parallel-Plate capacitor has plate area 0.4m^2 and a separation of 0.1mm. How much energy is stored in its field
An electric scooter has a battery capable of supplying 140 Wh of energy. If friction forces and other losses account for 60.0 percent of the energy usage, what altitude change can a rider achieve when driving in hilly terrain, if the rider and scoote..
A small airplane flies with a speed relative to the ground (ground speed) of 219.0 km/h in a direction 20.0 degrees to the east of north. what is the speed of the wind
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