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A rotating disc of mass 25 kg and radius 150 mm is accelerated from 500 to 3000 rpm in a time of 25 s. If there is a constant friction torque of 5 Nm, determine (a) the applied torque, (b) the work done, (c) the maximum power developed.
Subject a piece of steel to a case hardening process in which carbon is forced by diffusion through a layer on the surface of the piece. For this purpose, the piece of steel will be placed in a carbon-rich atmosphere in a special furnace.
the 2007 bmw z4 coupe 3.0si can accelerate from 0 to 59 mph in 5 s and its maximum speed is 152 mph. assuming the car
a six cylinder diesel engine with a 4.5 inch. bore for each cylinder and 5.0 inches stroke works on a theoretical
five kilograms of air at 300 k is contained in a vertical cylinder by a frictionless piston of a mass such that the
a standard steel angle l2 x 2 x 14 serves as a tension member in a truss carrying a static load. if the angle is made
A gas in a piston-cylinder assembly undergoes an expansion process for which the relationship between pressure and volume is given by pV^n = constant. The initial pressure is 4.25 bar, the initial volume is 0.25 m^3 and the final volume is 0.55 m^3 .
A new vehicle propulsion scheme calls for the use of liquid nitrogen as "fuel". The details of the power cycle are basically liquid nitrogen is heated in contact with the atmosphere, pressurised and expanded through a turbine) .
A steel plate of 950 kg accelerates from rest with 3 m/s^2 for a period of 10 s. What force (N) is needed and what is the final velocity ( in m/s and ft/s) ?
copper has a melting point of 1085 oc. consider molten copper is cooled from 1200oc.a is homogeneous nucleation
Determine whether laminar-to-turbulent transition occurs in the boundary layer of the fuselage. If transition occurs, where does it occur - Estimate the skin friction drag on the aircraft's fuselage.
Steam at 550 lbf/in.2 , 700 o F enters a turbine operating at steady state and exits at 1 lbf/in.2 . The turbine produces 500 hp. For the turbine, heat transfer is negligible as are kinetic and potential energy effects.
suppose that the probabilities are respectively 0.6 0.2 0.1 and 0.1 that an income tax form will be filled out
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