1. A 0.09-kg lead bullet traveling 227 m/s strikes an armor plate and comes to a stop. If all of the bullet's energy is converted to heat that it alone absorbs, what is its temperature change? In Celsius.
2. One cubic meter of water (see Table 4.4 for the mass density of water) flowing over the Albright Falls in Yellowstone National Park drops 79 m. If all of the water's potential energy is converted to kinetic energy at the bottom of the falls and the kinetic energy goes to heat the water, what is the temperature increase of the water? In Celsius
3. A proposed ocean thermal-energy conversion (OTEC) system is a heat engine that would operate between warm water (22°C) at the ocean's surface and cooler water (3°C) 1,686 m below the surface. What is the maximum possible efficiency of the system? Enter your answer accurate to two decimal places. In Percent