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A circuit consists of an ideal ac generator, a 25 µF capacitor, and an 65? resistor, all connected in series. The output of the generator has a peak emf of 20 V, and the armature of the generator rotates at 400 rad/s.
(a) Find the power factor.
(b) Find the rms current.
mA(c) Find the average power supplied by the generator.
A 17.0-lb block rests on the floor. What force does the floor exert on the block, what is the force exerted by the floor on the 17.0-lb block
A block of mass 20kg is sliding down an incline plane with no friction. Find the normal force and the acceleration of the object
Two spacecraft carrying identical pendulum gravity meters have landed on Mars, one at the equator and one at the North pole. Over a fixed period of time the pendulum at the equator is observed to oscillate 250 times compared with 251 times at the ..
A magician wishes to create the illusion of a 2.17-m-tall elephant. He plans to do this by forming a virtual image of a 57.0 cm tall model elephant with the help of a spherical mirror. what radius of curvature is needed
Suppose 0.0450kg of steam (at 100.°C) is added to 0.450kg of water (initially at 20.5°C), Find the final temperature of the water after equilibrium is reached
Suppose that a block is pulled at a constant velocity with a constant force in the presence of sliding friction. What is the net force on the block while it is moving at a constant velocity from point a to point b
A horse pulls a 300 kg wooden sleigh in the snow via a massless rope. The sleigh is towing a 50 kg wooden box behind it via another massless rope. What is the acceleration of the sleigh
A 25.0kg child plays on a swing having support ropes that are 1.80m long. How fast will she be moving at the bottom of the swing
A compressed-air cylinder stands 96.0 cm tall and has internal diameter 21.0cm cm . At room temperature, its pressure is 161 atm. How many moles of air are in the cylinder
question1a constant force of magnitude 82 n is applied to a 3 kg shoe box at angle 53 degrees causing the box to move
A loudspeaker is placed between two observers who are 115 m apart, along the line connecting them. how far is the speaker from each observer
A power boat heads due northwest at 13m/s relative to the water across a river that flows due north at 5m/s. What is the velocity(both magnitude and direction)of the motorboat relative to the shore?
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