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A 250 kg merry-go-round in the shape of a uniform, solid, horizontal disk of radius 1.50 m is set in motion by wrapping a rope about the rim of the disk and pulling on the rope. What constant force would have to be exerted on the rope to bring the merry-go-round from rest to an angular speed of 0.500 rev/s in 2.00 s?
if a van de graff generator has an electric potential of 169 kv and a diameter of 18.9 cm find how many more protons
Define how Pascal's law addresses the pressure in a fluid at different heights (or depths) before addressing the question and would you apply it in this case
The pressure in a vessel containing methane and water at 70°C is 10 atm. Estimate the mole fraction of methane in the liquid
Consider the motion of a muon as it moves through the Earth's atmosphere. After a time ? = 2.20 e-6 s, it decays into other particles. What is the speed of the muon
He wants to row directly across a river 252 wide with a constant of 1.33 m/s. Illustrate what direction should he aim his boat, and low long will it take him to cross the river
A piano tuner hears one beat every 3.1 seconds when trying to adjust two strings, one of which is sounding 440 Hz, How far off in frequency is the other string
the fermi level lies 0.520 ev above the valence band in a sample of silicon at 300k. this should be a p type material.
a charged styrofoam ball of mass 100g hangs motionless from a string that makes and angle 10 degrees with respect to
A charge = 5.00 is placed at the origin of an xy-coordinate system, and a charge = -4.50 is placed on the positive axis at 4.00 . If a third charge = 3.50 is now placed at the point 4.00 , 3.00 find the and components of the total force exerted on th..
A quarterback takes the ball from the line of scrimmage, runs backwards for 7.0 yards, then runs sideways parallel to the line of scrimmage for 19.0 yards. What is the magnitude of the football's resultant displacement
at one point in a thermodynamic cycle one mole of an ideal gas is under 100 pa of pressure and has a volume of 2 cubic
An ideal gas expands at a constant pressure of 2.1 atm from 446 mL to 844 mL. Heat then flows out of the gas, What is the total heat flow into the gas
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