____________________ direct vortex flow to provide smooth turbulence-free fluid flow.
Fill in the blank(s) with the appropriate word(s).
Guide rings
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Formwork components used to keep the forms aligned and through which the ties are fastened are called _____.
a. walers b. strongbacks c. plates d. braces
A tank contains CO2 gas at 25oC and 500 kPa. A valve on the tank is opened slightly so that the CO2 slowly exits the tank until the pressure inside the tank drops to 100 kPa. The volume of the tank is 0.25 m3. Determine the amount of heat transfer necessary so that the CO2 in the tank remains at 25oC throughout the process.
State e: Outlet; State 1: Initial State; State 2: Final State Given: CO2; Te = 25oC; V = 0.25 m3; P1 = 500 kPa; P2 = 100 kPa; T1 = T2 = 25oC Assume: As no information is given and these terms are unlikely to be significant, W = 0, and kinetic and potential energy can be neglected. No flow into the tank (mi = 0). CO2 is an ideal gas with variable specific heats.
End thrust is a disadvantage of helical gears.
Answer the following statement true (T) or false (F)
Let 
Graph the following combinations of those two signals over the discrete-time range, -20?n ?20. If a signal has some defined and some undefined values, just plot the defined values.
