A U-shaped irrigation canal is dug into the ground such that the bottom of the channel has a semi-circular cross section with a diameter of 2.0 m. A sluice gate having an overall height of 5 m can be lowered vertically into the channel to block the flow of water. Water partially fills the channel up to the horizontal line B-B. Determine the moment exerted by the water about the line A-A at the upper edge of the sluice gate. Problem

Two flowing streams of argon gas are adiabatically mixed to form a single flow/stream. one stream is 1.5 kg/s at 400 kpa and 200 c while the second stream is 2kg/s at 500 kpa and 100 ? . it is stated that the exit state of the mixed single flow of argon gas is 150 c and 300 kpa. assuming there is no work output or input during the mixing process, does this process violate either the first or the second law or both? explain and state all your assumptions.

An air conditioning system consist of a 5 cm diameter pipe, operating at a pressure of 200 kpa. the air initially enters the pipe at 15°c with a velocity of 20 m/s and relative humidity of 80%. if the heat supply throughout the process is 960 w, determine the relative humidity and the temperature at the outlet

Different types of steels contain different elements that alter the characteristics of the steel. for each of the following elements, explain what the element does when alloyed with steel.