Choose the best description of the radial velocity method of locating exoplanets. A. This method is works well for detecting planets orbiting in close proximity to a star, so the planet can more readily observed passing in front of the star.
B. The orbiting planet causes the star to wobble causing it to appear bluer or more red depending on which direction it moves.
C. Planets are timed as they orbit distant stars. The size of the planet can be judged by time duration it takes to transit a star.​

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.