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A disk-shaped merry-go-round of radius 2.73 meter and mass 165 kilogram rotates freely with an angular speed of 0.621 rev/s. A 55.4 kilogram person running tangential to the rim of the merry-go-round at 3.31 m/s jumps onto its rim and holds on. Before jumping on the merry-go-round, the person was moving in the same direction as the merry-go-round's rim.
Estimate what the final angular speed of the merry-go-round?
A load of bricks with mass = 16.0 hangs from one end of a rope that passes over a small, frictionless pulley. What is the tension in the rope while the load is moving
A 0.31 MeV x-ray photon collides by an electron and scatters straight back the way that it came. What is the energy of the backscattered photon? What is the kinetic energy of the scattered electron? Suppose that it was initially at rest.
What is the mass of the block on the left. At what rate is the plate's area increasing when the radius is 50 cm? (Give your answer correct to 2 decimal places.)
If 5.0 moles of an ideal gas expands isothermally at 100 degrees C to 5.5 times its intial volume, then find heat flow into a system
A right triangle has a hypotenuse of length 2.90 m, and one of its angles is 38.0°. What are the lengths of the following sides. a: the side opposite the 38.0° angle b: the side adjacent to the 38.0° angle
When UV light of wavelength 245nm falls on a metal surface, What is the work function of the metal
a solenoid is wound with a single layer of copper wire of radius 0.29 cm. the solenoid is 2.5 cm in diameter and 2.8 m
A small glider and a big glider both start from rest and are pushed with the same constant force F along a horizontal, frictionless surface. After each glider has traveled a distance d, which of the following statements is rue ?
an electron starts from rest 5.00 cm from the center of a uniformly charged sphere of radius 4.00 cm. if the sphere
A point charge -Q is at the center of a spherical conducting shell of inner radius R1 and outer radius R2, What is the charge on the inner surface of the shell
A small object, which has a charge q = 7.4 µC and mass m = 9.85 10-5 kg, is placed in a constant electric field. Determine the magnitude of the electric field
A major league pitcher of mass 100kg is standing on a skateboard of mass 2.00kg, holding a baseball, What is the speed of the skateboard
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