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A disk-shaped merry-go-round of radius 2.63 m and mass 155 kg rotates freely with an angular speed of 0.763 rev/s. A 59.4 kg person running tangential to the rim of the merry-go-round at 3.72 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. Calculate the initial and final kinetic energies for this system.
The top of her head is 0.12m above her eyes. What is the height of the shortest mirror in which she can see her entire image? Expalin how far above the floor should the bottom edge of the mirror be placed?
Gillian buys a pendulum clock at a discount store and discovers when she gets it home that it loses minutes each day.
A proton and an electron are moving due east in a constant electric field that also points due east, Determine the magnitude of the acceleration of the proton and the electron
What is an initial velocity of the boulders
A force vector points at an angle of 64.9 ° above the +x axis. It has a y component of +276 Newton's (N). Find out (a) magnitude and (b) x component of the force vector.
What is the magnitude of the centripetal acceleration.
Two small spheres of equal mass m are suspended from strings of length L. When the two spheres are each given an equal charge q they separate by a distance x, swinging out an angle theta from the vertical
An object attached to a horizontal spring is oscillating back and forth along a frictionless surface. The maximum speed of the object is 1.25m/s.
How fast must the bat fly, v_b, to hear a beat frequency of 205 rm {Hz}.
Suppose the charge of one is increased by twenty seven times while the charge of the other is reduced to one-third its initial value. What would their separation distance have to be changed to in order to keep the force between them the same?
What are the magnitude and direction of the net force. how long does it take for the police car to catch up with the speeder.
Two loudspeakers are placed above and below each other and driven by the same source at a frequency of 4.50x10^2 Hz. An observer is in front of the speakers (to the right) at point O.
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