The ordinates at 1-hr intervals of a unit hydrograph are 260.3, 753.2, 1556.0, 1980.1, 1246.7, and 320.3 cfs/in. determine the direct runoff hydrograph from a 3-hr storm in which 0.6 inches of rainfall excess occurred in the 1st hour, 1.3 inches in the 2nd hour, and 0.3 inches in the 3rd hour. what is the area of the watershed in mi? ?

Carbon dioxide gas expands isotherm a turbine from 1 mpa, 500 k at 200 kpa. assuming the ideal gas model and neglecting the kinetic and potential energies, determine the change in entropy, heat transfer and work for each kilogram of co2.

Awall of 0.5m thickness is to be constructed from a material which has average thermal conductivity of 1.4 w/mk. the wall is to be insulated with a material having an average thermal conductivity of 0.35 w/mk so that heat loss per square meter shall not exceed 1450 w. assume inner wall surface temperature of 1200°c and outer surface temperature of the insulation to be 15°c. calculate the thickness of insulation required.

An engine runs on the ideal diesel cycle. the cycle has a compression ratio of 20 and a cutoff ratio of 2. the highest temperature in the cycle is 1200 k. if the heat into the system is 300 kj/kg of working fluid and using variable specific heats determine the work produced per mass of working fluid