Water flows at a rate of 45 ft3 /s along a horizontal rectangular channel 4.5 ft in width. a hydraulic jump is formed at a point where the water depth is 0.25 ft. determine the rise in the water level and the horse power lost in the jump. ans. = = �

Consider a 1000 w iron whose base plate is made of 0.5 cm thick aluminum alloy 2024-t6 (ρ = 2770 kg/m3 and cp = 875 j/kg°c). the base plate has a surface area of 0.03 m2. initially, the iron is in thermal equilibrium with the ambient air at 22°c. assuming 90% of the heat generated in the resistance wires is transferred to the plate, determine the minimum time needed for the plate temperature to reach 200°c.