What are the steps that the gas in a nebula goes through as it becomes a star.?

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.

Which of the following is not a transverse wave? a) soundb) lightc) radiod) all of thesee) none of these

What are the north and south poles of a solenoid change with?