N A charged oil drop of mass m5x10 'kg is stationary (at rest) above a uniformly charged infinite plane sheet that carries positive charge density gw+8.85Cm'. The charge (in uc) of the oil drop is:

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.

What is the specific heat of wood ?

In which section of nuclear fussion occura. reactor vesselb. heat exchangerc. condenserd. cooling tower