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1.8 Ws 4.5 J 2.7 W/s 2.0 W 1.5 Js

A copper rod has a diameter of 1.5 cm long, and is 4 m long. The two ends are maintained at temperatures of 300 K and 800 K. Without using a calculator , what is the rate at which is conducted down the rod?. 1.8 Ws 4.5 J 2.7 W/s 2.0 W 1.5 Js.

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1.8 Ws 4.5 J 2.7 W/s 2.0 W 1.5 Js

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  1. A copper rod has a diameter of 1.5 cm long, and is 4 m long. The two ends are maintained at temperatures of 300 K and 800 K. Without using a calculator, what is the rate at which is conducted down the rod? 1.8 Ws 4.5 J 2.7 W/s 2.0 W 1.5 Js

  2. A copper rod has a diameter of 1.5 cm long, and is 4 m long. The two ends are maintained at temperatures of 300 K and 800 K. Without using a calculator, what is the rate at which is conducted down the rod? 1.8 Ws 4.5 J 2.7 W/s 2.0 W 1.5 Js

  3. An sheet of aluminum has a one inch diameter hole drilled in it. If the plate is heated to a temperature of 600 oC then the diameter of the hole will be • Still one inch • Slightly larger than one inch • Slightly less that one inch 1”

  4. An sheet of aluminum has a one inch diameter hole drilled in it. If the plate is heated to a temperature of 600 oC then the diameter of the hole will be • Still one inch • Slightly larger than one inch • Slightly less that one inch 1”

  5. You are given three objects of different masses and materials • M = 2 kg, c = 900 J/kg/K • M = 3 kg, c = 700 J/kg/K • M = 4 kg, c = 500 J/kg/K If you supply the same amount of heat to each, which one experiences the largest temperature change?

  6. You are given three objects of different masses and materials • M = 2 kg, c = 900 J/kg/K • M = 3 kg, c = 700 J/kg/K • M = 4 kg, c = 500 J/kg/K If you supply the same amount of heat to each, which one experiences the largest temperature change?

  7. You have a 50-50 mixture (by mass) of ice and water in a glass in the kitchen. The kitchen temperature is 20 oC. What is the common temperature of the water and the ice? • 0 K • 100 K • 273 K • 293 K • 300 K • 373 K • Cannot be determined

  8. You have a 50-50 mixture (by mass) of ice and water in a glass in the kitchen. The kitchen temperature is 20 oC. What is the common temperature of the water and the ice? • 0 K • 100 K • 273 K • 293 K • 300 K • 373 K • Cannot be determined

  9. A heat engine exhausts 500 MJ of heat while doing 300 MJ of work. How much heat energy was taken in? • 0 • 300 MJ • 500 MJ • 800 MJ • 1000 MJ

  10. A heat engine exhausts 500 MJ of heat while doing 300 MJ of work. How much heat energy was taken in? • 0 • 300 MJ • 500 MJ • 800 MJ • 1000 MJ

  11. A heat engine exhausts 500 MJ of heat while doing 300 MJ of work. What is its efficiency? • 0 % • 60 % • 40 % • 37½ % • 62 ½ % • 100 %

  12. A heat engine exhausts 500 MJ of heat while doing 300 MJ of work. What is its efficiency? • 0 % • 60 % • 40 % • 37½ % • 62 ½ % • 100 %

  13. At 300 K the average speed of a molecule is 600 m/s. If the temperature of a gas is doubled, what is the new average speed? • 600 m/s • 300 m/s • 424 m/s • 1200 m/s • 849 m/s • 2400 m/s

  14. At 300 K the average speed of a molecule is 600 m/s. If the temperature of a gas is doubled, what is the new average speed? • 600 m/s • 300 m/s • 424 m/s • 1200 m/s • 849 m/s • 2400 m/s

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