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At what angular velocity in rpm will the peak voltage of a generator be 468 V, if its 550-turn, 4.04 cm diameter coil rotates in a 0.246 T field?
Julie throws a ball to her friend Sarah. The ball leaves Julie's hand a distance 1.5 meters above the ground with an initial speed of 17 m/s at an angle 35 degrees; with respect to the horizontal. Sarah catches the ball 1.5 meters above the ground.
A grindstone of radius 4.0 m is initially spinning with an angular speed of 8.0 rad/s. The angular speed is then increased to10 rad/s over the next 4.0 seconds. Suppose that the angular acceleration is constant. What is the average angular speed of t..
A television is tuned to a station broadcasting at a frequency of 6.30×10^7Hz. Find the optimum length of the antenna
Your mass is 50 kg. Suppose you are standing on a scale in an elevator that starts moving up and increases its speed at the rate of 3 m/s every second. What would be the reading on the scale?
An advertisement claims that a centrifuge takes up only 0.127m of bench space but can produce a radial acceleration of 3000g at 5000 rev/min. Calculate the required radius of the centrifuge
A cat dozes on a stationary merry-go-round, at a radius of 5.4 m from the center of the ride. Then the operator turns on the ride and brings it up to its proper turning rate of one complete rotation every 6.2 s
A softball player hits the ball and starts running toward first base. Utilize the particle model to draw a motion diagram showing her position and her average velocity vectors through the first few seconds of her run.
A flat circular coil with 25 turns and a radius of 5 cm lies in the plane of the paper. A changing magnetic field is present in adirection perpendicular to and coming out of the plane of the paper.
Two identical waves each having an amplitude 0.02 m has a phase difference of ?/8 when they meet at a point. What is the amplitude of the resultant wave at this point? A string whose length is 1.0 m is fixed at both ends and vibrates according to the..
1. A child sits on the edge of a spinning merry-go-round that has a radius of 1.7 m. The child's speed is 5 m/s. What is the child's acceleration?2.During a NASCAR race a car goes 48 m/s around a curved section of track that has a radius of 240 m. Wh..
Ground beef may be irradiated with high-energy electrons from a linear accelerator to kill pathogens. Estimate the temperature increase of the beef due to this procedure
A woman wearing high-heeled shoes is invited into a home in which the kitchen has vinyl floor covering. Why should the homeowner be concerned?
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