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A 1.4kg grindstone in the shape of a uniform cylinder of radius 0.2m acquires a rotational rate of 1800 rev/s from rest over a 6.0 s interval at constant angular acceleration. Calculate the torque delivered by the motor.
A 750 air-track glider attached to a spring with spring constant 10.5 is sitting at rest on a frictionless air track. A 475 glider is pushed toward it from the far end of the track at a speed of 118 .
The primary coil of a transformer has N1 = 2.00 102 turns, and its secondary coil has N2 = 6.67 101 turns. what rms voltage is developed across the secondary coil
A train is travelling up a 3.2 degree incline at a speed of 3.25 m/s when the last car breaks free and begins to coast. How long does it take for the last car to come to rest.
A typical Major League fastball is thrown at about 99 mph and with a spin rate of 103 rpm. If the distance between the pitcher's point of release and the catcher's glove is exactly 65.5 ft, how many full turns does the ball make between release and c..
A laser beam is incident at an angle of 30.8° to the vertical onto a solution of corn syrup in water. If the beam is refracted to 19.18° to the vertical, what is the index of refraction of the syrup solution
The beam emerging from a ruby laser (wavelength 694.3 nm) passes through a circular aperture 2.4 mm in diameter. what is the angular spread of the beam
A 12.0-V battery produces 205mA when it's across a 47.5? load, Find the potential difference across the battery's terminals
A car travels due east with a speed of 42.0 km/h. Raindrops are falling at a constant speed vertically with respect to the Earth. Find the velocity of the rain with respect to the following reference frames
A car (mass = 1170 kg) is traveling at 42 m/s when it collides head-on with a sport utility vehicle (mass = 2330 kg) traveling in the opposite direction
What are the x and y components of the shell. What is the acceleration of the two blocks, in meters per second squared.
A student at the top of a building throws a ball straight upward with an initial speed v0. How do the final velocities of the balls compare when they reach the ground
Water flows with speed 1 m/s from a small hole made at the bottom of a tank filled with water. Find height of the tank
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