P2207_lecture_questions_heat_termo

P2207_lecture_questions_heat_termo - On a cold winter day...

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1 On a cold winter day with T=-10 ° C , the Eiffel Tower is 300 m tall. How tall is it on a hot summer day when T=40 ° C ? The Eiffel Tower is made from steel with a thermal expansion coefficient α =11 × 10 -6 /K . A. 300.001 m B. 300.16 m C. 316 m D. 420 m A cylindrical rod is just slightly too large to fit through a circular hole . If you want the rod to fit through the hole, should you heat the plate or cool it ? A. Heat B. Cool Suppose that it takes an amount of heat Q to bring a pot of water initially at 20 ° C to a boil. How much additional heat must you add to boil all water away? c = specific heat of water L v = latent heat of vaporization Additional heat = A. Q × L v B. Q × L v / c C. Q × L v / (c × 80 ° ) D. Q × L v / (c × 100 ° ) Suppose that it takes 10 minutes to bring a pot of water initially at 20 ° C to a boil. How much longer does it take to boil all the water away, assuming a constant rate of heat input? c=4190 J/(kg K)
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P2207_lecture_questions_heat_termo - On a cold winter day...

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