A spring of a spring constant 30.0N/m is attached two different masses in the system is set in motion find a period in frequency and vibration from massive of the following magnitude

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.