Microquiz_12

Microquiz_12 - ConcepTest ConcepTest 17.4 17.4 Glasses...

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Unformatted text preview: ConcepTest ConcepTest 17.4 17.4 Glasses Glasses 1) run hot water over them both 2) put hot water in the inner one 3) run hot water over the outer one 4) run cold water over them both 5) break the glasses Two drinking glasses are stuck, one inside the other. How would you get them unstuck? Running hot water only over the outer glass outer glass will allow the outer one to expand outer one to expand , while the inner glass remains relatively unchanged. This should loosen the outer glass and free it. ConcepTest ConcepTest 17.4 17.4 Glasses Glasses 1) run hot water over them both 2) put hot water in the inner one 3) run hot water over the outer one 4) run cold water over them both 5) break the glasses Two drinking glasses are stuck, one inside the other. How would you get them unstuck? 1) gets larger 2) gets smaller 3) stays the same 4) vanishes Metals such as brass expand when heated. The thin brass plate in the movie has a circular hole in its center. When the plate is heated, what will happen to the hole? ConcepTest ConcepTest 17.5b 17.5b Steel Expansion II Steel Expansion II 1) gets larger 2) gets smaller 3) stays the same 4) vanishes Imagine drawing a circle on the plate. This circle will expand This circle will expand outward along with the rest of the outward along with the rest of the plate. plate. Now replace the circle with the hole, and you can see that the hole will expand outward as well....
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This note was uploaded on 05/13/2010 for the course PHYSICS 53L taught by Professor Mueller during the Fall '07 term at Duke.

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Microquiz_12 - ConcepTest ConcepTest 17.4 17.4 Glasses...

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