8. If you push a 2000 N weight up a ramp with 400 N of force and you raise the weight 1 meter, how long is the ramp?
A) 3 m
B) 5 m
C) 10 m
D) 20 m

An ammonia compressor has a 5% clearance volume and displacement rate of 80 l/s and pumps against a condensing temperature of 40°c. for two different temperatures of -10°c and 10°c, compute the mass flow rate of refrigerant assuming the clearance volumetric efficiency applies. discharge specific volume corresponding to-10°c and 10°c are 112.5 l/kg and 95 l/kg, respectively.