Why don't satellites in orbit fall to the ground? why they don't fly off into space?

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.

The radius of an atom is closest in size to a

Each line (unit) on the horizontal axis represents: 5 years 10 years 20 years all of the above