The Horton parameters for the watershed are f0=5.5cm/hour, ff=0.15cm/hour and k= 1.0/hr. The watershed is subjected to a rainfall that has a duration of 6 hours. The rainfall intensity is 2 cm/hour during the first two hours, 3cm/hour in middle two hours and 3.5 cm/hour during the last 2 hours. Employing a time increment of 10 min, determine the rates and total depth of infiltration and rainfall excess from this rainfall using Horton equation and compare the results with the Modified Horton method.

An air compression refrigeration system is to have an air pressure of 100 psia in the brine tank and an allowable air temperature increase of 60°f for standard vapor compression cycle temperatures of 77 f entering the expansion cylinder and 14 f entering the compression cylinder, calculate the coefficient of performance a. 2.5 b 3.3 c. 4.0 d. 5.0

Air is compressed isentropically from an initial state of 300 k and 101 kpa to a final temperature of 1000 k. determine the final pressure using the following approaches: (a) approximate analysis (using properties at the average temperature) (b) exact analysis

Afoot bridge is made as a simple deck, 4 m long, with a cross section 2 m (wide) and 20 cm thick, and made of wood. the deck is supported at the two ends. the maximum load allowable on the bridge is 10 tons, provided it is uniformly distributed on the deck. to sense this load, a strain gauge is placed at the center of the bridge and its resistance is monitored. if the sensor has a nominal resistance of 350 s2 and a gauge factor of 3.6, what is the reading of the strain gauge at maximum load? the modulus of elasticity for the wood used in the construction is 10 gpa.