4. Calculate the final temperature of a 3.00 kg gold bar at 99.0 C that was dropped into 0.220 kg of water at 25.0 C. 5. At Niagara Falls, 505 kg of water falls a distance of 50.0 m. What is the increase of the internal energy of the water at the bottom of the falls? Assume that all of the initial potential energy goes into increasing the water's internal energy and the final kinetic energy is zero.6. Draw a diagram of a bomb calorimeter and explain the use of this device