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Chapter 11

# Chapter 11 - CHAPTER 11 Quick Quizzes 1(a Water glass iron...

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C HAPTER 11 Quick Quizzes 1. (a) Water, glass, iron. Because it has the highest specific heat ( ) 4186 J kg C ⋅° , water has the smallest change in temperature. Glass is next ( ) 837 J kg C ⋅° , and iron ( ) 448 J kg C ⋅° is last. (b) Iron, glass, water. For a given temperature increase, the energy transfer by heat is proportional to the specific heat. 2. (d). The final temperatures will depend on the mass of each sample. 3. (c). 4. (c). The blanket acts as a thermal insulator, slowing the transfer of energy by heat from the air into the cube. 5. (e). The ratio of the power output of Star A to that of Star B is given by ( ) ( ) ( ) ( ) ( ) ( ) ( )( ) 2 4 2 4 4 A A B B 2 4 A A A 4 2 4 2 4 B B B B B B B 4 1 2 2 2 2 64 4 1 R T R T A eT A eT R T R T σ π σ σ σ π = = = = = 347

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