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Solid disk of radius 0.5m and mass 5kg is rotating countercw about central pivot with ω=10sec^-1. A constant fictional foce of 3N aplpied on outer edge is used to slow disk to a stop. How long in time does it take for the disk to stop? How many rev. does it make while stopping?
Two automobiles, each of mass 1000 kg, are moving at the same speed, 20 m/s, when they collide and stick together. In what direction and at what speed does the wreckage move a) if one car was driving north and one south? b) if one car was driving no..
Consider a collection of 4 "Fermi" dice. That is, no two die may have the same face up. What is the average value of the sum of the dice
How much thermal power is radiated by a light bulb when its filament is heated to 2000°C? Assume that the filament is a blackbody of area 1.0 cm2
Find the electric field energy density and the energy content for a spherical capacitor of radii r1 and r2 where they hold charges of q and -q
Two moles of a monatomic gas with an rms speed of 294 m/s are contained in a tank that has a volume of 0.12 m3. If each gas particle has a mass of 8.220 × 10–26 kg, what is the absolute pressure of the gas?
An object at rest on a flat, horizontal surface explodes into two fragments, one seven times as massive as the other. How far does the lighter fragment slide
If a block of wood floating on a pool of water has a volume of 37 cm3 and displaces a volume of water of 30 cm3, what is the density of the wood
A particle with charge of 4 microcoloumbs is at the origin, another identical particle is placed 2 m from the origin on thepositive x-axis and another 2 m on the positive y-axis. Provide asketch with vectors representing the forces on the charge a..
Two large, parallel, conducting plates are 17 cm apart and have charges of equal magnitudeand opposite sign on their facing surfaces. What is the potential difference between the plates
a 3.77-kg ball of clay is thrown downward from a height of 3.47 m with a speed of 4.81 ms onto a spring with k 1690
The blood flow rate through the aorta is typically 95 cm3/s, and a typical adult has about 5.1 liters of blood. what is the speed of blood as it flows through the aorta
A concave lens has a focal length of -28 cm. Find the image distance and magnification that results when an object is placed 22 cm in front of the lens
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