How can this system be brought to equilibrium?

a) add a 5 n force acting in the same direction as the 10 n force.

b) add a 10 n force acting in the same direction as the 10 n force.

c) add a 10 n force acting in the same direction as the 20 n force.

d) add a 20 n force acting in the same direction as the 20 n force.

a car's position in relation to time is plotted on the graph. what is the car's average velocity?

a) 5 m/s

b) 10 m/s

c) 30 m/s

d) 50 m/s

Acommercial refrigerator with refrigerant-134a as the working fluid is used to keep the refrigerated space at -35°c by rejecting waste heat to cooling water that enters the condenser at 18°c at a rate of 0.25 kg/s and leaves at 26°c. the refrigerant enters the condenser at 1.2 mpa and 50°c. if the compressor consumes 3.3 kw of power, determine (a) the mass flow rate of the refrigerant, (b) the refrigeration load, (c) the cop, and (d) the minimum power input to the compressor for the same refrigeration load.