11. You are asked to design a cylindrical steel rod 0.50 m long, with a circular cross section, that will conduct 150.0 J/s from a furnace at 400 °C to a container of boiling water. What must the rod's cross sectional area be? Note the thermal conductivity of steel is 50.2 W/m K. * A. 0.00498 cm^2 B. 0.498 cm*2 C. 37.4 cm 2 D. 49.8 cm^2 E. 4980 cm^2

2. Gain or loss of energy? write G or Lin the blank A. I When water freezes. В. During sublimation. C. When water boils. D. g When ice melts. E. During condensation. F. When water turns to steam. 3. is it a Solid, Liquid, or Gas? write S, Lor G in the blank A. Water at 50° C. B. Water at 120°C. C. Water at 10° C. Water at -5°C. E. Water at 100°C. F. * Water at 285 K. (bonus) D. Match each term to the correct description. You will only use each term once. 4. Insulator A. A region of space that contains no matter. e 5. Conductor B. Allows convection, but is a very good insulator. 6. Vacuum C. Any material that easily allows heat to move through it. a D. Allows convection; can be a good conductor of heat. 7. Solid E. Materlal that resists the movement of heat through it. 8. Liquid

A piece of copper of mass 2kg is cooled from 150°C to 50°C. The specific heat capacity of copper is 400 J/ kg °C. The heat loss is Oa. 4000 J b. 80000 J Oc. 40000 J O d. 800 J

5. A copper cylinder is initially at 20.0 °C. By how much should the temperature increase so that its length will be 0.150% larger than it is at 20.0 °C? Note for copper a = 1.7 x 10^-5 K^-1. * A. 29.4 °C B. 49.4 °C C. 88.2 °C D. 108 °C O E. 2941 *c