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1. A step-up transformer increases 15.7V to 110V. What is the current in the secondary as compared to the primary? Assume 100 percent efficiency.
2. An ideal step-down transformer has a primary coil of 400 turns and a secondary coil of 19 turns. It's primary coil is plugged into an outlet with 120V (AC), from which it draws an rms current of 0.51A.
What is the voltage in the secondary coil?
What is the distance between the centers of the two slits? Describe answer in m.
There is a region with a constant magnetic field 5.2T. The magnetic field is directed out of the page. What is the power in the rod
A typical car battery is composed of six, 2.1 V cells arranged in series to have an Emf of 12.6 V. How many electrons pass through the starter motor
A 0.050-kg bullet is shot to the right toward a 1.5-kg target initially at rest on a flat frictionless surface. calculate the impulse experienced by the bullet
A running house cat has 11.0 of kinetic energy at speed. What would her kinetic energy be if she ran half as fast as the speed
Two elastic particles, each with mass m, collide head on. Initially they have speeds v1 and v2. What are their speeds after the collision
A running back with a mass of 82 kg and a velocity of 9 m/s (toward the right) collides with, What is the velocity of the tackle before the collision
If the induced voltage is 0.5 V, as B field is decreasing at a rate of 0.5 T/s in a loop. Calculate the area of the loop
What is mass of the ice cube
An archer shoots an arrow with a velocity of47.5m/s at an angle of50.5° with the horizontal. What is the initial speed of the apple
If the amplitude of a particle in simple harmonic motion is doubled, how are the total energy and maximum speed affected
The electric potential inside a conducting sphere is 245V, and a distance d = 32.0cm from the surface of the sphere, obtain the radius of the sphere
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