steam plant hp+cooling water circulated

In a steam plant the steam leaves the boiler at 2000kpa+250C deg.It is then expanded in an engine + finally exhausted into a condenser.The press+ condition of the steam at entry to the condenser are 15kpa+0.82 dry respectively.Assuming the whole of this heat drop is converted into useful work in the engine,Need engine power developed for a steam flow of 14000kg/hr+ estimate the amount of cooling water circulated in the condenser per kg of steam condensed if the cooling water inlet temp is 18C,outlet temp 37C and the condensate leaves at 53C.Need step by step solution, thanks..

steam+ reducing valves

Steam flows into a reducing valve with a pressure of 1400kpa+ dryness fraction ).98.It leaves the valve with a pressure of 150kpa.What diameters of inlet and outlet pipes would be required for a flow of 2270kg per hour with a velocity of 15m/s both before and after the reducing valve? assume no losses+ enthalpy per kg steam before throttling = enthalpy after.Assume also that the specific heat of superheated steam at 150kpa is 2KJ/deg celcius..Need step by step solution, thanks...

Conservation of translational plus rotational kinetic energy

A cart consists of a body of mass M mounted on two uniform cylinders, each mass m, radius R. The cart is moving at velocity V at its initial location on a plane inclined at angle b. SEE ATTACHMENT #1 for a diagram showing parameters. Known values are: M=2.1 kg, m=1.8 kg, angle b= 53 degrees, V= 2.5 m/sec. PART a. Using conservation of energy, find the distance, D, that the cart moves up the plane in stopping. PART b. Calculate what fraction of the initial total kinetic energy is rotational.

A cylinder and a frictionless block are in contact on an inclined plane. Find their acceleration down the plane.

On an inclined plane at angle b from horizontal, a frictionless block, mass m, is placed behind and in contact with a uniform cylinder of radius R and mass M. Released from rest, the two objects remain in contact as the block slides and the cylinder rolls down the plane. Find a, the acceleration down the plane of the center of mass, in m/sec^2. Knowns are: M= 6.4 kg, m= 3.2 kg, and angle b=30 degrees. Note that M= 2m. SEE ATTACHMENT #1 for a diagram with parameters.

A rotating rectangular framework rearranges to form a rotating straight bar. Apply conservation of angular momentum to find the final angular velocity.

A framework consists of two thin, uniform bars of mass M= 12 kg, length L= 3 m, and two thin, uniform bars of mass m= 6 kg, length D= 3 m, forming a rectangle of length L width D. It is rotating in space with initial angular velocity Wo= 18 rad/sec. At some instant, one corner breaks loose and the bars rearrange into a straight line rotating about a c.m. axis at angular velocity Wf. SEE ATTACHMENT #1 for diagram of before and after rearrangement. Find the final angular velocity.