Carbon dioxide (assume ideal gas) is compressed in a compressor from 120 kPa and 227°C to 700 kPa and 427°C at a mass flow rate of 5 kg s-1. 100 kW is lost to the environment in the process. Determine the work required.

Acompressor receives the shaft work to decrease the pressure of the fluid. a)- true b)- false

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

Ariver flows from north to south at 8 km/h. a boat is to cross this river from west to east at a speed of 20 km/h (speed of the boat with respect to the earth/ground). at what angle (in degrees) must the boat be pointed upstream such that it will proceed directly across the river (hint: find the speed of the boat with respect to water/river)? a 288 b. 21.8 c. 326 d. 30.2