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Consider a Refrigerant 22 at 0oC that is going through a phase change from the saturated liquid to saturated vapor. Using T-dS equations, calculate the entropy change between these two phases.
A home has a total of 7.5 KW of lighting and the lights stay on 2/3 of the time. If electricity is priced at 12 cents/KWh, then how much money could be saved annually with a 25% reduction in use?
a 600 mm diameter wheel rolls without slipping on a horizontal surface as shown. rod ab is attached to the wheel at a
A 45 degree strain gage rosette, with each gage having a nominal resistance of 120 W and a gage factor, is attached to an Aluminium structural element of a machine. Each strain gage is inserted into its own dc Wheatstone bridge with all other resisto..
the braking machanism on an aircraft carrier can bring a 2 ton plane to a stop in a time of 1.8 seconds. the plane
a double pipe heat exchanger has an effectiveness of 0.5 when the flow is counter current and the thermal capacity of
light bulbs are rated by their power consumption in watts w. electricity is sold in units of energy which is power
an electric field is e400nci for xgt0 and e-400nci for xlt0. a cylinder of length 30cm and radius 10cm has its center
A well insulated 3-m X 4-m X 6-m room initially at 7 degrees C is heated by the radiator of a steam heating system. The radiator has a volume of 15 L and is filled with superheated vapor at 200 kPa and 200 degrees C.
oxygen is diffusing in a mixture of oxygen-nitrogen at 1 std atm 25degc. concentration of oxygen at planes 2 mm apart
Thin walled box beam with end load at an angle. A box beam made from an extruded aluminium ally having 5 414 mm wall thickness is loaded by an inclined force P=100 N
A 4.56ft3 rigid tank contains saturated refrigerant-134a at 100 psia. Initially, 11% of the volume is occupied by liquid and the rest by vapor. A valve at the top of the tank is now opened, and vapor is allowed to escape slowly from the tank. Heat is..
an object moves with constant acceleration 4.20 ms2 and over a time interval reaches a final velocity of 12.6 ms. a if
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