For a PIC16F877A Microcontroller to work, a crystal oscillators must be connected between pins 13 and 14.What is the frequency range in which PIC16F877A can operate?

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.

The mass flow rate of the fluid remains constant in all steady flow process. a)- true b)- false

During a steady flow process, the change of energy with respect to time is zero. a)- true b)- false