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A turntable has a moment of intertie of 3.00 x 10-2 kg•m2 and spins freely on a frictionless bearing at 25.0 rev/min. A 0.300 kilogram ball of putty is dropped vertically on the turntable and sticks at a point 0.100 meter from the center. Find by what factor the angular momentum of system change after the putty is dropped onto the turntable?
q1. a 9.0 cm diameter wire coil is at first oriented so that its plane is perpendicular to a magnetic field of 0.67 t
A beaker of mass 325 g is sitting on a table. The beaker is filled with 210 g of water. The beaker and water are initially in thermal equilibrium at 22 ?C, What is the specific heat of the beaker
An ideal spring with a spring constant of 16 N/m is suspended vertically. What is the extension of the spring when the speed is a maximum
A baseball is thrown straight upward on the moon with an initial speed of 35 m/s. Calculate the time taken to reach that height
Two light sources are used in a photoelectric experiment to determine the work function for a particular metal surface. What stopping potential would be observed when using light from a red lamp
An advertisement claims that a centrifuge takes up only 0.127 of bench space but can produce a radial acceleration of 4900 at 8160 . Calculate the required radius of the centrifuge
A 3-ft-diameter semicircular channel made of unfinished concrete is to transport water to a distance of 1-m uniformly. determine the minimum elevation difference across the channel
At a testing facility, both a rocket and a jet are to be compared on their performance. The jet was tested first. what is the difference between a rocket and a jet
If an ice skater spins on perfectly frictionless ice and pulls in her arms, she reduces her moment of inertia by a factor of two and she will then rotate with double the angular velocity. explain what happens to her angular velocity
A pair of cylindrical shoes each having a radius of 1 m and height of 5 cm are designed to allow a person to stand on water without getting their feet wet. What is the largest mass the person can have
2 kg block slides on a rough horizontal surface. the block hits a spring with a speed of 2.4 m/s and compresses it a distance of 11 cm before coming to rest. what is the force constant of the spring
In a lightning bolt, 15 C of charge flows during a time of 1.5 10-3 s. Assuming that the lightning bolt can be represented as a long, straight line of current, what is the magnitude of the magnetic field at a distance of 30 m from the bolt?
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