A rod of aluminum has a square 4.5 mm × 4.5 mm cross section and length of 2.0 m. (A) What is the resistance of the rod along its entire length? (B) A cylindrical rod of copper of the same length is made so that it has the same resistance as the aluminum rod. What is the radius of copper rod?

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.

Fluids at rest possess no flow energy. a)- true b)- false

Condition monitoring is a major component of. (clo4) a)- predictive maintenance. b)-preventive maintenance c)-proactive maintenance d)-reactive maintenance.