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A turntable must spin at 33.4 rpm (3.50 rad/s) to play an old-fashioned vinyl record. Determine how much torque must the motor deliver if the turntable is to reach its final angular speed in 1.5 revolutions, starting from rest? The turntable is a uniform disk of diameter 30.5 centimeter and mass 0.23 kilogram.
A jet of water squirts out horizontally from a very small hole nearthe bottom of a storage tank. what is the water level in the storage tank
why is it far less dangerous to stand in front of an intense beam of red light than in front of a very low-intensity
an electric field of intensity 3.7 knc is applied along the x-axis. calculate the electric flux through a rectangular
Vibration from a 475 Hz tuning fork sets up standing waves on a string clamped at both ends (one of which you may take as x=0). What is the wavelength of the travelling waves that form this standing wave
At an amusement park there is a ride in which cylindrically shaped chambers spin around a central axis, What is the radius of a chamber
At the same instant that a 2.0-kg ball is dropped from 50 m above Earth, a second ball, What is the velocity of the center-of-mass of the two-ball system 0.5 seconds after the balls are released
A rubber ball is dropped and bounces vertically from a horizontal concrete floor. If the ball has a speed of 3.2 m/s now before striking the floor and a speed of 2.1 m/s just after bouncing, what is the average force of the floor on the ball? Suppose..
If the coefficient of static frictionbetween the bureau and the floor is 0.45, what is the minimum horizontal force a person must apply to start the bureau moving
A juvenile elephant has a mass of 300kg. He wishes to fly using his very large ears. find the total surface area of his two ears
A 2.50×106 ? resistor and a 2.00 ?F capacitor are connected in series with an ideal battery of 5.00 V. How much energy was provided by the battery
A 0.144 kg baseball is moving towards home plate with a speed of 43.0 m/s when it is bunted. The bat exerts an average force of 6.50 Ã? 103 N on the ball for 1.30 ms, What is the final speed of the ball
a flat surface having an area of 3.6 m2 is rotated in a uniform electric field of magnitude e 6.3 x 105 nc. determine
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