Aconcrete channel to bring water to crystal lake is being designed. it will have vertical walls and be 15 feet wide. it will be 10 feet deep, have a slope of .0015 feet/foot, and a roughness coefficient of .014. how deep will the water be when 1,000 cubic feet per second is flowing through the channel? to solve this problem, we can use manning’s equation

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.

Aheavily insulated piston-cylinder device contains 0.02 m3 of steam at 300 kpa and 200 °c. 1.2 mpa. d this process. team is now compressed in a reversible manner to a pressure of etermine the entropy change and the work done on the steam during this process

List 3 options on how to reduce knocking problens during engine process,