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A 15cm diameter disk moves from rest to angular speed of 120rev/min in 5seconds.
a) Discover angular acceleration of disk.
b) Find tangential acceleration of a bug on the rim of the disk.
c) Find tangential velocity of the bug when the disk is at its final speed.
d) Find tangential acceleration and the centripetal acceleration of the bug two seconds after starting from rest.
A centrifuge is a device in which a small container of material is rotated at high speed on a circular path. such a device is used in medical laboratories, for instance, to cause the more dense red blood cells to settle through the less dense bloo..
A car starts from rest and accelerates uniformly over a time of 5.21 seconds for a distance of 110 m. Determine the acceleration of the car
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A 56.0kg cheerleader uses an oil-filled hydraulic lift to hold four 110kg football players at a height of 1.30m. find the diameter of the football players' piston
A 3.0 m tall, 54 cm diameter concrete column supports a 190,000 kg load. By how much is the column compressed
a 74 gram block of ice at 0 degrees celcius is placed in 673 grams of water at 27 degrees celcius what is the final temperature of the mixture
one end of a copper rod is in thermal contact with a hotresrvoir at T=500K, and the other end is in thermal contact with acooler resvoir at T=300K. find the entropy change of each reservoir
An ?-particle has a charge of +2e and a mass of 6.64 multiply.gif 10-27 kg. It is accelerated from rest through a potential difference that has a value of 1.12 multiply.gif 106 V, What is the radius of its circular path
A string 40.0 cm long and fixed at both ends of a musicalinstrument oscillates in its n= 1 mode. The speed of waves onthe string is 233m/s, and the speed of sound in air is 348m/s.
A piñata of mass 3.30 kg is attached to a string tied to a hook in the ceiling. What is the work done by gravity by the time the string is in a vertical position for the first time
An airplane has a mass of 3 * 104 kg and takes off under theinfluence of a constant net force of 35 000 N. What is the netforce that acts on the plane’s 80 kg pilot, assuming that hehas the same acceleration as the plane?
the light intensity incident on a metallic surface with a work function of 1.17eV produces photoelectrons with maximum kinetic energy of 4.17eV. what is the maximum kinetic energy of the photoelectrons
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