A startup company is selling a new compressor claimed to have an isentropic efficiency of 90% when compressing refrigerant R-134a from saturated vapor at 0.8 MPa to 1.4 MPa. The compressor is said to be adiabatically insulated, requiring a work input of only 9.5 KJ per unit mass of refrigerant flowing. Verify that the specs of the compressor are possible.

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