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A uniform disk has a mass of 4.6 kg and a radius of 0.2 m. The disk is mounted on frictionless bearings and is used as a turntable. The turntable is initially rotating at 20 rpm. A thin-walled hollow cylinder has the same mass and radius as the disk. It is released from rest, just above the turntable, and on the same vertical axis. The hollow cylinder slips on the turntable for 0.20 s until it acquires the same final angular velocity as the turntable. What is the final angular momentum of the system?
A 36 g ball is fired horizontally with initial speed v_0 toward a 110 g ball that is hanging motionless from a 1.1 m-long string. The balls undergo a head-on, perfectly elastic collision, after which 110 g ball swings out to a maximum angle theta_..
A rescue plane is flying at 300 m above the ground at 210 km/hr. It is going to drop a package of supplies to some survivors on the ground. how far from the survivors should it drop the package
Communications satellites are placed in a circular orbit where they stay over a fixed point on the equator. Find average speed of the satellite in geosynchronous orbit
Consider a black body of surface area 28.0 cm2 and temperature 5600 K. How much power does it radiate
A pot of hot water is boiling on your stove. The pot is in the shape of a round cylinder made of aluminum which is 10 cm in radius. What is the difference in temperature between the inner and outer sufaces of the aluminum bottom of the pot
A satellite weighing 500 kg is in a circular orbit around the earth. It takes exactly 3 hours to go around the earth. what is the force of gravity on this satellite
A 0.0220 kg bullet moving horizontally at 450 m/s embeds itself into an initially stationary 0.500 kg block. How far does this combination travel before stopping
An organ pipe is open at both ends. It is producing sound at its fifth harmonic, What is the length of the pipe
A piece of ice of mass 0.0240 kg at an initial temperature of-11.0o C is placed in a well-insulated cup containing0.100 kg of water at 35.0o C. Calculate the equilibrium temperature of this system.
Your spaceship lands on an unknown planet. You drop a 1.50 kg wrench from 5.50 m above the ground, What is the mass of the planet, in kilograms
A 2kg uniform cyclinder is released at the top of a 1.53 m 11 degree incline. What is the velocity when it reaches the bottom
A laser beam is directed from air (n = 1.0) into an unknown liquid. The angle of incidence is measured to be 60° and the angle of refraction is measured to be 45°. What is the index of refraction of the unknown liquid?
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