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Helium gas is heated in a constant volume process from -200 to 500°F. Obtain specific heat values for helium and assuming ideal gas behavior, determine:
a. The ratio of the final to initial pressure.b. The change in specific internal energy.c. The change in specific enthalpy.
helium has the lowest normal boiling point of any of the elements at 4.2 k. at this temperature the enthalpy of
argon at 2mpa and 500oc enters an isentropic turbine. the temperature of argon at the outlet is 20oc. determine the
the masses of a b and c are 5 kg 15 kg and 100 kg respectively. the coefficient of friction between all contacting
1. a circular hovercraft is to levitate at a gap height of 2.5 mm after picking up a payload. the hovercraft has a
the uniform disk of mass m and radius r rotates about the pin at c located a distance d from its center. determine d so
a 4-lb ball revolves in a horizontal circle. knowing that the length of the cord is 3 feet and that the max allowable
carbon monoxide is initially in a 50 l tank at 210 kpa and 127c.a determine the mass of the gas in kilograms.b if 0.02
1 a piston-cylinder device contains 5 kg of r134a at 800 kpa and 60 c. the refrigerant is now cooled at constant
Calculating electrical power from a geothermal Resource, A geothermal well is producing 9000kg/second from a hot water basin at 200 ºC [enthalpy of 800 KJ/Kg].
determine the shortest time possible for the rear wheel drive 2 mg truck to achieve a speed of 16 ms with a constant
the jib crane is supported by a pin a c and rod ab. the rod can withstand a maximum tension of 40kn. if the load has a
a 60 mm bore 02 series double row angular contact ball bearing has a 15 degrees contact angle. the outer ring rotates
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