how much heat has been lost when 78g piece of copper is placed into a calorimeter and cools from 120 to 40c

If a substance is not at its melting or boiling point, as the heat content of a sample of matter increases, its temperature increases the number of intermolecular bonds decreases the space between particles increases the particles move faster

Which answer lists the fundamental forces in order from strongest to weakest

How do scientists think that gravity affected the formation of our solar system?