What two forces combine to make electromagnetic force?

Clothes dryer uses about 7 amps of current from a 240 volt line. how much power does it use?

Under normal conditions, describe how increasing the temperatures effects the solubility of a typical salt

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.