P2207_lecture_questions_heat_termo

P2207_lecture_questions_heat_termo - On a cold winter day...

This preview shows pages 1–2. Sign up to view the full content.

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)

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 3

P2207_lecture_questions_heat_termo - On a cold winter day...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online