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An antique phonograph turntable has a kinetic energy of 2.60×10?2 J when turning at an angular velocity of 47.0 rev/min .
A) What is the moment of inertia of the turntable about the rotation axis?
A wheel initially rotating at an angular speed of 2.2 rad/s turns through 32 revolutions during the time that it is subject to an angular acceleration of 0.40 rad/s2
A vector is located in the x-y plane. The x component is 4.00 m and the y component is 3.00 m. Find the angle that this vector makes with the positive y-axis
a boeing 747-8 with wingspan of 65.5 m is cruising at 289 m/s over northern canada, What is the potential difference between the tips of the wings
Alberta is going to have dinner at her grandmother's house, but she is running a bit behind schedule. What is the slowest speed at which she could drive
A 23 kg child goes down a straight slide inclined 38? above horizontal. The child is acted on by his weight, How large is the normal force of the slide on the child
Object O1 is 16.3 cm to the left of a converging lens with a 11.7-cm focal length. What is the overall magnification of this system
In 1911, Ernest Rutherford discovered the nucleus of the atom by observing the scattering of helium nuclei from gold nuclei. If a helium nucleus with a mass of 6.68 10-27 kg.
A 7.00 kg bowling ball moves at 2.30m/s. How fast must a 2.60g Ping-Pong ball move so that the two balls have the same kinetic energy.
A long pole is used to lift a window. If a vertical lift of 85 N is needed to raise the window, elucidate what force must be exerted along the pole? Assume the pole makes an angle of 49° with the vertical wall.
As part of a safety investigation, two 1700 cars traveling at 18 are crashed into different barriers. Find the average forces exerted on (a) car that hits a line of water barrels and takes 1.80 to stop, and (b) car that hits a concrete barrier and t..
To store the energy produced in 1hour by a 110 electric power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir? Suppose the upper reservoir is 510 meters above the lower one, and we can neglect the sm..
The ground state energy of a harmonically oscillating electron is 1.24 eV. How much energy should be added to the electron to move it to the second excited state.
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