Explain why a burn from 100°C steam is more severe than a burn from water at 100°C.
2. Why is air a good insulator?
3. A 0.25 kg length of aluminum wire is warmed 10°C by an electric current. How much heat was generated by the current? (c = 0.22 kcal/kg*°C
4. A 1000.0 kg car with a speed of 90 km/h brakes to a stop. How many cal of heat are generated by the brakes as a result?
5. A 500.0 g pot of water at room temperature (20.0°C) is placed on a stove. How much heat is required to change this water to steam at 100°C?