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A potter's wheel is rotating at 3.2 rad/s in a counterclockwise direction when the potter turns it off and lets it slow to a stop. This takes 26 s. Find the average angular acceleration of wheel during this time?
f the U.S. demand for electricity continues to grow at about 2% per year, how many more MWe would be needed to meet that demand in 10 years, What fraction of our present use of natural gas is this
Calculate the rotational inertia of a wheel that has a kinetic energy of 24,400 J when rotating at 641 rev/min
A physical pendulum consists of a meter stick (of mass 0.3 kg) that is pivoted at a small hole drilled through the stick a distance x from the 50 cm mark. The meter stick is then released from rest (at a small angle from vertical) and allowed to o..
show that in any prism the area of a right section is equal to the product of the base and the sine of the angle
A bedroom bureau with a mass of 40 kg, including drawers and clothing, rests on the horizontal floor. What is the static friction force on the bureau initially
the planet mars requires 2.35 years to orbit the sun which has a mass of 2 times 1030 kg in an almost circular
A red laser from the physics lab is marked as producing 632.8-nm light. When light from this laser falls on two closely spaced slits, What is the wavelength of light produced by the pointer
A 0.025-kg block on a horizontal frictionless surface is attached to an ideal massless spring whose spring constant is 150 N/m. what is the kinetic energy of the block
A spherical weather balloon is filled with hydrogen until its radius is3.00m. Its total mass including the instruments it carries is10.0kg. Find the buoyant force acting on the balloon
The drawing shows two wires that both carry the same current ofI = 66.1 A and are oriented perpendicular to the plane ofthe paper. The current in one wire is directed out of the paper, while the current in the other wire is directed into the paper..
find the frequency of revolution of the electron in the classical model of the hydrogen atom. in what region of the
An egg is thrown nearly vertically upward from a point near the cornice of a tall building. What is the initial speed of the egg
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