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The generator at a power plant produces AC at 23,000 V. A transformer steps this up to 335,000 V for transmission over power lines. If there are 2,050 turns of wire in the input coil of the transformer, how many turns must there be in the output coil?
An ideal gas is taken through a quasi-static process described by P = alphaV2, How much work is done on the expanding gas in this process
The gravitational acceleration on the Moon is a sixth of that on Earth. The weight of an apple is 1.03 N on Earth. (a) What is the weight of the apple on the Moon? (b) What is the mass of the apple?
In a Compton scattering experiment, an x-ray photon scatters through an angle of 18.0° from a free electron that is initially at rest. Calculate the angle through which the electron scatters
A box of mass 2.1 kg is on a horizontal surface. The coefficient of friction between the box and the surface is 0.32. Find the acceleration of the box
A skier is gliding along at 3.6 m/s on horizontal, frictionless snow. He suddenly starts down a 10 degree incline. His speed at the bottom is 17 m/s .
What is the magnitude of an average acceleration of the ball
If the spring is not a perfect spring but instead the magnitude of the force exerted by the spring is k times the cube of the amount stretched or compressed
We are not normally aware of the gravitational or electric force between two ordinary objects. What is the reason in each case? Give an example where we are aware of each one and why.
A 70-kg ski jumper starts from rest 59 m above the ground on an icy track and flies off the track at an angle of 31°, With what speed does the skier leave the track
64 moles of an ideal monatomic gas is at an initial temperature of 135 degrees celcius. What is the final temperature of the gas
An elevator has mass 550kg , not including passengers. The elevator is designed to ascend, at constant speed, What is the maximum number of passengers that can ride in the elevator
A coffee-maker (19 ?) and a toaster (13 ?) are connected in parallel to the same 120-V outlet in a kitchen. How much total power is supplied to the two appliances
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