The highest waterfall in the world is the Salto Angel in Venezuela. Its longest single falls has a height of 807 m. If water at the top of the falls is at 15.0°C, what is the maximum temperature of the water at the bottom of the falls? Assume all  the kinetic energy of the water as it reaches the bottom goesinto raising its temperature.

Following vigorous exercise, the internal body temperature of a 72.5-kg person is 40.0°C. At what rate, in watts, must the person transfer thermal energy to reduce the body temperature to 37.0°C in 30.0 min, assuming the body continues to produce energy at the rate of 150 W?

If you lie on the ground at night with no cover, you get cold rather quickly. Much of this is due to energy loss by radiation. At night in a dry climate, the temperature of the sky can drop to -40◦F. If you are lying on the ground with thin clothing that provides little insulation, the surface temperature of your skin and clothes will be about 86 ◦F. Estimate the net rate at which your body loses energy by radiation to the night sky under these conditions.

A 6.25 kg block ice at 0 degrees Celsius is being warmed on a glass stove top. The thermal conductivity of the glass is 1.00 W/ (m K) and the glass is 0.50 cm thick. If the radiator plate underneath the glass raises the temperature of the bottom of the glass to 125 degrees Celsius, how long would it take to completely melt the ice? Assume the ice remains a solid rectangle with a square base of side 15 cm as it melts.   B. What is the rate of entropy change in Joules/ Kelvin/ seconds of the melting ice?