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A 200g, 40cm diameter solid cylindrical turntable rotates on frictionless bearings at 60rpm. A 20g block sits at the center of the turntable. the block then slides outward along a frictionless groove in the surface of the turntable. What is the turntables angular speed when the block reaches the outer edge?
A billiard ball strikes and rebounds from the cushion of a pool table perpendicularly. What is the average net force (magnitude and direction) exerted on the ball by the cushion
A 2.30kg hoop 2.20m in diameter is rolling to the right without slipping on a horizontal floor at a steady 3.00rad/s. What is the total kinetic energy of the hoop
Passengers riding in the Great Six Flags Air Racer are spun around a tall steel tower. At top speed the planes fly at a 59.0 o bank approximately 12.0 m from the tower, Calculate the speed of the planes
the plate on the back of a certain computer scanner says that the unit draws 0.340 a of current from a 120 v 60.0 hz
A football is kicked off the top of a 10 meter high building at anangle of 37 degrees above the horizontal with a speed of 20 m/s, How long does it take for the ball to hit the ground
A block of mass 2.50 kg is pushed 3.00 m along a frictionless horizontal table by a constant 10.0 N force directed 25.0° below the horizontal. Determine the work done by the normal force exerted by the table
9.75-m ladder with a mass of 23.2 kg lies flat on the ground. Apainter grabs the top end of the ladder and pulls straight upwardwith a force of 245 N. What is the ladder's moment of inertia
A helicopter lifts a 70 kg astronaut 16 m vertically from the ocean by means of a cable. The acceleration of the astronaut is g/10. How much work is done on the astronaut by her weight? What is the speed of the astronaut just before she reaches the ..
What is the mass in grams of 1L of helium gas as STP? (Find moles and then convert moles to grams; atomic mass =4.0grams/mol), Why do helium balloons float
The frequency of a steam train whistle as it approaches you is 532Hz . After it passes you, its frequency is measured as 458Hz. How fast was the train moving
A mass hangs on the end of a massless rope. The pendulum is held horizontal and released from rest. When the mass reaches the bottom of its path it is moving at a speed v = 2.4 m/s and the tension in the rope is T = 15.1 N.
A female orb spider has a mass of 0.45g . She is suspended from a tree branch by a 1.0m length of 0.0020-mm-diameter silk. If you tap the branch and send a vibration down the thread, how long does it take to reach the spider
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