Enough steam at 100C is condensed in 325 g of water to raise the temperature of the water from 20C to 40C. Calculate the mass of the steam that condensed in the water. Show outline of the calculation.

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?

Which diagram correctly demonstrates the various forces acting on a ball moving horizontally with some speed?

Yvette hangs a 2.4kg bird feeder in the middle of a rope tied between two trees. the feeder creates a tension of 480 n in each side of the the rope.