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Chapter 21 retrospect Plug and Chug 1. Q = mc?T Q = (500g)(1cal/g°C)(50°C) = 25000 calories autonomic nervous system: 25000 calories 2. Q = mc?T Q = (500g)(1cal/g°C)(50°C-20°C) = 15000 calories autonomic nervous system: 15000 calories 3. Q = mc?T Q = (30g)(0.11cal/g°C)(100°C-30°C) = 231 calories Ans: 231 calories 6. c = Q/m?T c = 735cal/(50g)(100°C-30°C) = 0.21 Ans: 0.21cal/g°C depend and develop 6. Because act has high uper peculiar(prenominal) heat mental ability. 7. A 10-kilogram jug of sweltry body of water because it has higher specific heat capacity. 14. A high specific heat capacity because it can store much energy. 15. More likely. Think and drub 2. Tfinal= m1T1+m2T2/?T 1000g(20°C)+2000g(40°C)/3000g ? 33.3 Ans: About 33.3°C 4. Q = mc?T Q = (400g)(1cal/g°C)(22°C-20°C) = 800 calories c = Q/m?T c = 800cal/(50g)(100°C-22°C) = 0.2051282051 ? 0.21 Ans: About 0.21 cal/g°C Chapter 22 Review Review Question s 1. They conduct heat well. 2. Because it is a profound conductor of heat. 3. A conductor transfer heat easily but an dielectric delay the transfer of heat. 4. Because there be lots of oxygenate spaces in those materials. 7. Because the land is warmer than the water in the mean solar day and cooler than the water at night. 8.

As the gas expands, it cools and its temperature rises when it is compressed. 10. any energy, including heat, that is transmitted by radiation is called beamy energy. 11. Objects at minuscule temperatures emit long waves, and higher-temperature objects emit waves of shorter wavelengths. 12. Because a good absorber of refulgent energy reflects very little beaming energy, including the range! of radiant energy we call light. 14. Good emitter. 15. A black corporation of hot tea. 16. In a snappy room. Think and Explain 2. No. Cold doesnt flow but the heat escapes. 3. Because iron is a good conductor of heat. 4. wild transportmanship has a lower density than cold air, do it rise. The holes release for hot air to rise from the bulb, while new-fangled cooler air is pulled in from the bottom of the lamp. 6....If you want to bring about a full essay, order it on our website: OrderEssay.net

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