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The transformer on a utility pole steps the voltage down from 10000 V to 220 V for use in a college science building. During the day, the transformer delivers electric energy at the rate of 5.00 kW.
At what rate is heat lost in the nonideal transformer?
=________ (kW)
A 10.0-cm long wire has a diameter of 0.1 mm and a resistivity of 4.0 ´ 10-7 ohm-cm, A 6.0-volt battery is connected to the resistance, What current exists in the circuit
Two parallel plates are 4.0 cm apart. The bottom plate is charged positively and the top plate is charged negatively, producing a uniform electric field of 5.0 * 10 exp 4 N/C in the region between the plates.
In space, an asteroid of mass 5,000 kg is hit by an object of mass 1000 kg and travelling at 1,000 m/s with respect to the asteroid. what will be the new speed of the asteroid
Provide your answer in m/s in scientific notation to three significant digits (i.e. 1.15*10^2)
A 3.00-kg object is fastened to a light spring, with the intervening cord passing over a pulley. The pulley is frictionless, and its inertia may be neglected.
The bullet first passes through the left disk and then through the right disk. It is found that the angular displacement between the two bullet holes is θ = 0.320 rad. From these data, evaluate the speed of the bullet.
A river 98.2 m wide flows toward the south at 35.8 m/min. A girl on the west bank wishes to reach the east bank in the least possible time. How far downstream does she travel
A face appears in a convex mirror; face is 75% its normal size and appears to be 24cm behind the mirror. How far was the face standing from the mirror
A camera has a lens with a focal length of 29.4 cm. When an object is placed 3.95 meters away is being photographed, how far from the film should the lens be placed
Two point charges Q1=+5.00 nC and Q2= -3.00 nC are separated by 35.0cm. (a) What is the electric potential at a point midway between the charges? (b) What is the potential energy of the pair of charges? What is the significance of the algebraic si..
You charge an initially uncharged 79.9-mF capacitor through a 48.1 Ohm resistor by means of a 9.00-V, What is the charge after a long time (coloumbs)
A tennis ball of mass = 0.068kg and speed = 21m/s strikes a wall at a 45 degree angle and rebounds with the same speed at 45 degrees. What is the magnitude of the impulse given to the ball
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