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A transformer has310turns in the primary coil and130in the secondary coil.
What kind of transformer is this?
step-down
step-up
By what factor does it change the voltage? (Assume 100% efficiency.)
By what factor does it change the current?
A satellite is in a circular orbit about the earth (ME = 5.98 × 1024 kg). The period of the satellite is 1.20 × 104 s. Illustrate what is the speed at which the satellite travels?
At t = 0, a particle leaves the origin with a velocity of 12 m/s in the positive x direction and moves in the xy plane with a constant acceleration of (-2.0i+4j) . At the instant the y coordinate of the particle is 18 m, illustrate what is the x ..
q1. a 35.0- battery with negligible internal resistance a 90.0- resistor and a 1.75 inductor with negligible resistance
A spring has of constant k=1200 N/m is compressed by 8.0cm. A 2.5kg block is placed against the compressed spring. find the resulting kinetic energy and speed of the block
Three point charges are arranged along the x axis. Charge q1=-4 nC is located at x=0.240m and charge q2=2.10 nC is at x=-0.350m, What is the direction of the net force on q3
A horizontal disk, with a moment of inertia of 10 kg* square meters, relative to a vertical frictionless axis through its center, What is the total angular momentum before the collision
A microphone is undergoing simple harmonic motion (SHM) above a 440-Hz sound source, determine the amplitude of the simple harmonic motion
Vector A has a magnitude of 11 and points in the positive x-direction, with the positive x-axis. What is the magnitude of A and B
An L-R-C circuit has an inductance of 0.410 , a capacitance of 2.75×10?5 , and a resistance of R. What is the angular frequency of the circuit
At a rock concert, the engineer decides that the music isn't loud enough. He turns up the amplifiers so that the amplitude of the sound, By what percentage does the intensity increase
The loaded cab of an elevator has a mass of 3.00 multiplied by 103 kg and moves 171 m up the shaft in 23s at constant speed. At what average speed does the force from the cable do work on the cab?
A 50.0 g copper calorimeter contains 200 g of water at 20.0°C. How much steam must be condensed into the water if the final temperature of the system
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