Ethylene glycol at 20°c flows through 55 meters of cast iron pipe of diameter 6 cm. the measured pressure drop is 250 kpa. neglect minor losses. using a non-iterative formulation, estimate the flow rate in m^3/h.
for ethylene glycol at 20°c, take rho = 1117 kg/m^3 and μ = 0.0214 kg/ms. for cast iron, take ε = 0.26 mm. take π = 22/7. round the answer to one decimal place.

Amass of 1.5 kg of air at 120 kpa and 24°c is contained in a gas-tight, frictionless piston-cylinder device. the air is now compressed to a final pressure of 720 kpa. during the process, heat is transferred from the air such that the temperature inside the cylinder remains constant. calculate the boundary work input during this process.

Apump is used to circulate hot water in a home heating system. water enters the well-insulated pump operating at steady state at a rate of 0.42 gal/min. the inlet pressure and temperature are 14.7 lbf/in.2, and 180°f, respectively; at the exit the pressure is 60 lbf/in.2 the pump requires 1/15 hp of power input. water can be modeled as an incompressible substance with constant density of 60.58 lb/ft3 and constant specific heat of 1 btu/lb or. neglecting kinetic and potential energy effects, determine the temperature change, in °r, as the water flows through the pump.

Calculate the bore of a cylinder that has a stroke of 18 inches and an extension time of 6 seconds at a flow rate of 4 gal/min.