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Given the differential equation, a(px+q)^2 d^2y/dx^2+b(px+q)dy/dx +cy=0, show that it can be transformed into another differential equation with constant coefficients.if we make the substitution px+q=e^t. change the derivatives from dy/dx to dy/dt.
steam is to be condensed in the condenser of a steeam power plant at a temperature of 60c with cooling water from a
a rigid insulated tank that is initially evacuated is connected through a valve to a supply line that carries helium at
the number of vacancies per cubic meter of a metal at 600degc is 3.11025 vacanciesm3. assume the density of this metal
consider two identical rooms one room has a refrigerator in it the other does not. all the doors and windows in each
a gear of mass 2.5kg rotates ar 1500rpm.due to an error in manufacture the centre of gravity of the wheel is displaced 0.5mm from the axis of rotation. calculate the out of balance force.
determine (a) the compression ratio, (b) the cycle efficiency, (c) exhaust temperature, and (d) mean effective pressure (kPa). Draw (e) a P-v diagram and (f) a T-s diagram
a cylinder 10 feet long has an ouside diameter of 2 inches and a 1mm thick wall. the yield strength of the wall
The heat transfer coefficient in the oven is 25W/m^2K. Calculate rate of heat transfer per m^2 area.
burning one metric ton 1 000 kg of coal can yield an energy of 3.30x1010j. fission of one nucleus of uranium235 yields
gold foil is 0.08 mm thick and 670mm2 in area. a it is cubic with a0.4076nm. how many unit cells are there in the foil?
a partitioned chamber that is well insulated has frac12 filled with h2o at 500 deg f and 50 psia and the other frac12 a
a jet engine propels an aircraft at 300 ms through air at 60 kpa and 0 c. the inlet diameter of this engine is 2 m the
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