Considere duas pessoas, uma com 1,80m de altura e outra com 1,50m. Qual será a relação entre suas velocidades de caminhada?

How would a small bar magnet be oriented when placed at position x?

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.

Four friends, a, b, c, and d are standing varying distances away from a speaker which is producing sound waves.