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A brick of mass M has been placed on a rubber cushion of mass m. Together they are sliding to the right at constant velocity on an ice-covered parking lot.
a) Draw a free-body diagram of the brick and identify each force acting on it.b) Draw a free-body diagram of the cushion and identify each froce acting on itc) Identify all of the action-reaction pairs of forces in the brick-cushion-planet system.
Find the force exerted by reflecting sunlight off a reflecting aluminum sheet in space if the area normal to the sunlight is 5000 m^2 and the solar intensity is 2500 W/m^2
A tennis ball gun launches tennis balls at 17.6 m/s . It's pointed straight up and launches one ball; 2.0 s later, What is the second balls' velocity at that point
A small blob of putty of mass m = 90.0 g falls from the ceiling and lands on the outer rim of a turntable of radius R = 15.0 cm and moment of inertia I = 1.90E-2 kg·m2 that is rotating freely with angular speed 3.77 rad/s about its vertical fixed-sym..
imagine that you spill a cup (250 g) hot water, initially at 75 C, onto the cold ground on a winter fay, Calculate the net change in the entropy of the universe due to this process, and comment on the result
A 20.0 kg box slides up a 12.0 m long incline at an angle of 30.0 degrees with the horizontal. then the increase in the kinetic energy of the box is
Violet light and red light travel through air and strike a block of plastic at the same angle of incidence. find the index of refraction for violet light in plastic
A typical hospital accelerator built for proton beam therapy accelerates protons from rest by passing them through and electric potential difference of magnitude 62MV. find the lorentz factor for these protons
An electric generating plant boils water to produce high- pressure steam. The steam spins a turbine that is connected to the generator. How many liters of water must be boiled to fill a 6.0m3 boiler with 52atm of steam at 440oC
The maximum charge on the capacitor in an oscillating LC circuit is Q0. What is the capacitor charge, in terms of Q0, when the energy in the capacitor's electric field equals the energy in the inductor's magnetic field? Give your answer in terms of Q..
A 15.0N package of whole wheat flour is suddenly placed on the pan of a scale such as you find in grocery stores. If the pan has negligible weight, find the maximum distance the spring will be compressed
A man strides across a bed of embers. Assume the glowing charcoal is covered with a thin layer of ash 0.50 mm thick and is at a temperature of 650C. The thermal conductiviity of ash and charcoal is 1.5 W/ (mxK). (a) Estimate the heat transferred t..
A syringe with a barrell with a diameter of 0.20 m is filled with water. What is the speed of the jet of water out of the syringe
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