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Q. A frictionless pulley has the shape of a uniform solid disk of mass 6.00 kg and radius 24.0 cm. A 1.50 kg stone is attached to a very light wire that is wrapped around the rim of the pulley , and the stone is released from rest. As it falls down, the wire unwinds without stretching or slipping, causing the pulley to rotate. How far must the stone fall so that the pulley has 6.50 J of kinetic energy?
Q. Sasha's favorite ride at the fair is the Ferris wheel that has a radius of 7 m. a) If the ride takes 20 s to make one full revolution, what is the linear speed of the wheel? b) What centripetal force will the ride exert on Sasha's 50 kg body? c) Does Sasha feel as if she is being pulled in or out by the ride? d) Explain the difference between what she feels and what is really happening at the top and bottom of the wheel.
A hydraulic lift consists of two pistons that connect to each other by an incompressible fluid. If one piston has an area of 0.49 m^2 and the other an area of 6.2m^2, how big a mass can be raised by a force of 220N exerted on the smaller piston.
What is the total flux
You bring a 350-g wrench into the house from your car. The house is 15 C warmer than the car, and it takes 2.52 kJ of energy to warm the wrench by this amount. Find (a) heat capacity of the wrench and (b) specic heat of the metal it's made from.
A tank having a volume of 0.100 m3 contains helium gas at 135 atm. How various balloons can the tank blow up if each filled balloon is a sphere 0.300 m in diameter at an absolute pressure of 1.50 atm.
What is the propotion of the mass of these excess electrons to the mass of the penny.
What is the average induced EMF. what is the magnitude of the velocity of raindrops relative to the car.
A jetliner is moving at a speed of 274 m/s. The vertical component of the plane's velocity is 54.0 m/s. Conclude the magnitude of the horizontal component of plane's velocity.
Now, as both pipes vibrate at their fundamental frequencies, the beat frequency of 17 Hz is heard. How many centimeters were cut off the end of the second pipe? The speed of sound is 333 m/s.
How much would an 80.0kg person weigh) on mars where an acceleration of gravity is 3.93m/s^2 and (b) on earth's moon where the acceleration of gravity is 1.63m/s^2.
Assume a constant upward slope of 32; calculate the horizontal and vertical components of the acceleration of a truck that slowed from 140 to rest in 7.3.
A 25- sample of an ideal gas with is at 250 and 50. The gas is compressed isothermally to one-third of its original volume, then heated at constant volume until its state lies on the adiabatic curve that passes through its original state, and then al..
What is pressure in the cylinder
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