Light travels from acetone at 63 degrees to normal. When it
reaches the boundary with
another medium, the angle
changes to 51.9 degrees. What
is that boundary

Which levels of government establish and implement educational requirements for minors

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.

Abowling ball rolling down the lane toward the pins has gravitational potential energy. a. no b. a lot of c. a little