A freezer case holds tissue samples in a laboratory. The manufacturer claims that under steady state operation the refrigerator has a coefficient of performance of 6.5. The freezer rejects 4.5 BTU/hr by heat transfer to the lab, which is kept at 75 °F. What power input is required in BTU/hr?

Steel is coated with a thin layer of ceramic to protect against corrosion. what do you expect to happen to the coating when the temperature of the steel is increased significantly? explain.

Prove the equivalence between the two statements of the 2nd law of thermodynamics (i.e., a violation of one statement leads to the violatio the other statement)

What is the chief metrological difference between measuring with a microscope and with an electronic comparator? a. the microscope is limited to small workpieces.a. the microscope is limited to small workpieces. c. the comparator can only examine one point on the workpiece. d. the microscope carries its own standard.