Rank the following media from fastest to slowest for a light wave to travel through 1 being fastest 4 being slowest ( a. gas, b. solid ,c. liquid, d. empty space)

When you turn on a battery-operated device, an electrical circuit is

If y gets smaller as x gets bigger and y have an relationship?

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.