If a machine has an efficiency of 50 percent and
an ma of 3, what is its ima?

Spend time observing or thinking about events that involve matter and energy. which events can you explain? which events can’t you explain?

6–43 a food department is kept at 2128c by a refrigerator in an environment at 308c. the total heat gain to the food department is estimated to be 3300 kj/h and the heat rejection in the condenser is 4800 kj/h. determine the power input to the compressor, in kw and the cop of the refrigerator.

When using the scientist method, which step comes last?