Anato base in northern norway is warmed with a heat pump that uses 7.0 °c ocean water as the cold reservoir. heat extracted from the ocean water warms fluid to 80°c; this warmed fluid is used to heat the building. when the system is working at full capacity, 2,000 kw of heat is delivered to the building at the cost of 600 kw of electric energy. a. what is the actual coefficient of performance of the system? b. what is the theoretical maximum coefficient of performance of the system?

Amachinist needs to remove a tight fitting pin of material a from a hole in a block made of material b. the machinist heats both the pin and the block to the same high temperature and removes the pin easily. what statement relates the coefficient of thermal expansion of material a to that of material b? a) the situation is not possible, heating block b will shrink the hole in the material as the material expands with increasing temperatureb) material b has the same coefficient of expansion as does material ac) material b has a negative coefficient of expansion and a has a positive coefficient of expansiond) material a has a greater coefficient of expansion than does material be) material b has a greate

If a balloon is taken outside on a very cold day, what will occur?

The air that we breath is made mostly of which gaseous molecule