A system uses 2,380 J of energy to do work as 12,900 J of heat are added to the system. The change in internal energy of the system is J.

A175 g lump of molten lead at its melting point (327 c) is placed into 55.0 g of water at 20.0 c. the specific heat of lead is 130.j/kg c and the hf of lead is 20,400 j/kg. when the lead and the water have reached equilibrium, what is the temperature of the mixture?

Aria drove to the store, did some shopping, and then came home. during maria's trip, when was her displacement equal to zero?

Arrange the images in order to show how lake-effect snow occurs.