ef152-rec-5-2 - EF 152 Physics for Engineers Spring, 2009...

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EF 152 – Physics for Engineers Spring, 2009 Recitation 5.2 Temperature and Ideal Gases Task 1. A boatload of concept questions. 1. You may notice that if a mercury-in-glass thermometer is inserted into a hot liquid, the mercury column first drops, and then later starts to rise (as you expect). How do you explain this drop? a. the mercury contracts before the glass contracts b. the glass contracts before the mercury contracts c. the mercury contracts before the glass expands d. the glass expands before the mercury expands e. the mercury expands before the glass contracts Follow-up: Is it possible to have the mercury first rise and later drop? 2. Metals such as brass expand when heated. The thin brass plate in the figure has a circular hole in its center. When the plate is heated, what will happen to the hole? a. gets larger b. gets smaller c. stays the same d. vanishes 3. A grandfather clock uses a brass pendulum to keep perfect time at room temperature. If the air conditioning breaks down on a very hot summer day, how will the grandfather clock be affected? a.
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This note was uploaded on 04/07/2009 for the course EF 152 taught by Professor Ab during the Spring '08 term at University of Tennessee.

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ef152-rec-5-2 - EF 152 Physics for Engineers Spring, 2009...

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