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A playground merry-go-round of radius 2.00 meter has a moment of inertia I = 290 kg•m2 and is rotating about a frictionless vertical axle. As a kid of mass 25.0 kilogram stands at a distance of 1.00 meter from the axle, the system (merry-go-round and child) rotates at the rate of14.5 rev/min. The kid then proceeds to walk toward the edge of the merry-go-round. Find the angular speed of the system when kid reaches the edge?
rad/s
A Ferris wheel with a radius of 14.0 m rotates at a constant rate, completing one revolution in 30.0 s. What is the apparent weight of a 60 passenger when she is at the bottom of the wheel.
A capacitor that is initially uncharged is connected in series with a resistor and an emf source with E=110V, What is the resistance of the resistor
Two narrow slits separated by 0.51 mm are illuminated by monochromatic light of wavelength 670 nm. How many bright fringes can be seen on a screen 1.3 cm wide placed 1.1 m in front of the slits.
in the arctic polar bears must be able to walk on thin ice to travel and hunt for food. an average male polar bear has
An observer at rest perceives a signal from a source that is .5 asmuch as the signals frequency. With what speed and in what direction must the source be moving
two circular coils carry the same current but one coil has twice the diameter of the other one. if the larger coil
A concave spherical mirror has a radius of curvature of magnitude 27.4 cm. determine Is the image real or virtual
Two point charges q and 4q are at x=0 and x=L, respectively, and free to move. A third charge is placed so that the entire three-charge system is in static equilibrium. What is the magnitude of the third charge
A radar station locates a sinking ship at range 17.5 km and bearing 136° clockwise from north. How far apart are the plane and ship
A harmonic wave is traveling along a rope. The oscillator that generates the wave completes 41.0 vibrations in 25.1 s. A given crest of the wave travels 403 cm along the rope in a time period of 10.6 s. What is the wavelength?
one end of a meter stick is pinned to a table so the stick can rotate freely in a plane parallel to the tabletop. two
Some enterprising physics students working on a catapult decide to have a water balloon fight in the school hallway. At what angle must they be launched to just graze the ceiling
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