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A board lies on top of 2 uniform cylinders that lie on a fixed plane inclined at an angle theta. The board has mass m and each of the cylinders has mass (m/2). The system is released from rest. If there is no slipping between any of the surfaces, what is the acceleration of the board? Use conservation of energy.
The Flip-Flap Railway in Coney Island, one of the first loop-the-loop roller coasters, had a loop of diameter 7.62 meters. Calculate the minimum height above the bottom of the loop required to achieve enough speed
suppose that O&M costs (staff, maintenance, decommissioning, waste handling, training, refurbishment reserve and other charges) can be approximated by 12% of the debt charge and the fuel costs for the ACR's enriched fuel is about 3 percent of the deb..
A potential difference of 75 mV exists between the inner and outer surfaces of a cell membrane. The inner surface isnegative relative to the outer surface. How much work is requiredto eject a positive sodium ion (Na+) from the interior of the cell..
the italian restaurant across the street closes at 9 pm but the one two blocks away closes at 10 pm. 7. bob bought a
A raft has a surface area of 100m^2 and a height of 10.0cm. If it is constructed of yellow pine and floating in a lake, calculate how much of the raft will be above the waterline
The area of a typical eardrum is about 5.0 × 10?5 m2. (a) Calculate the sound power (the energy per second) incident on an eardrum at the threshold of hearing. W (b) Calculate the sound power incident on an eardrum at the threshold of pain. W
Two identical conducting spheres, fixed in place, attract each other with an electrostatic force of -0.7250N when separated by 50 cm, center-to-center. Thespheres are then connected by a thin conducting wire. When the wireis removed, the spheres r..
in a spherical metal shell of radius r an electron is shot from the center directly toward a tiny hole in the shell
an object is placed to the left of aa lens and a real image is formed to the right of the lens. the image is inverted relative to the object and is one half the size of the object. how far from the lens is the object
near earth the density of protons in the solar wind a stream of particles from the sun is 8.60 cm-3 and their speed is
In the steady state 1.8 1018 electrons per second enter bulb 1. There are 6.3 1028 mobile electrons per cubic meter in tungsten. The cross-sectional area of the tungsten filament in bulb 1 is 1 10-8 m2. The electron mobility in hot tungsten is 1.2 10..
A robot unloads a finished component from a machine and places it on a gravity conveyor. The conveyor accelerates from rest until it reaches the bottom of the conveyor 4.5 seconds later. The component is traveling at a velocity of 1.35 m/s when it..
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