When a negative charge is induced on one surface of a
piece of paper, what is induced
on the other surface of the
paper? Why does this happen?

Awave is produced in a rope. the wave has a speed of 33 m/s and a frequency of 22 hz.

Acertain radio station broadcasts radio waves that have a wavelength of 298cm what is its broadcast frequency?

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.