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A 60 kg woman stands at the rim of a horizontal turntable having a moment of inertia of 500 kg-m2 and a radius of 2.0 m. The turntable is initially at rest and is free to rotate about a frictionless, vertical axle through its center. The woman starts walking around the rim clockwise, as viewed from above, at a constant speed of 1.5 m/s.
a. In what direction and with what angular speed does the turntable rotate?
b. How much work does the woman do to set herself and the turntable into motion?
A solenoid 30 cm long has 2900 turns of wire and carries a current of 5.7 A. Find the magnetic field at the common center
A 52 {rm kg} ice skater spins about a vertical axis through her body with her arms horizontally outstretched, making 2.50 turns each second. The distance from one hand to the other is 1.5 {rm m}. Biometric measurements indicate that each hand typi..
A car rounds a corner of radius 80 m at a speed of 20 m/s. What is the smallest value that the coefficient of static friction between the wheels and the road can have
A metal rod of mass 50 and electrical resistance 0.10 rests on parallel horizontal rails that have negligible electric resistance. The rails are a distance = 10.0 apart. The rails are also connected to the voltage source providing a voltage of = 5..
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Photographic cameras on spy satellites supposedly can read the license plate of a car on the ground. How large is the diameter of the camera required for such a feat
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What is the speed of the projectile immediately before it hits the ground if air friction does one and a half times as much work on projectile when it is going down as it did when it was going up.
A 50.0-g object is attached to a horizontal spring, What is the velocity of the object when it is halfway to the equilibrium position if the surface is frictionless
A diver has a vertical velocity of -12 m/s when she is 1.8 m above the water. What was her peak height
A home run is hit in such a way that the baseball just clears a wall 10 m high, located 126 m from home plate. Find the speed of the ball when it reaches the wall
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