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Physics Question Please Help

anyone could you please help me in answering this question. this is only question i am having problem with out of 5.




1. Describe an instrument which make use of the fact that different metal expand by differing amounts for the same increase in temperature.

Give two examples of problems caused by the high linear expansitives of metals.


charikaar
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dvs
10
Instrument: Look up bimetallic thermometers.

Problems:
1. Bridges
2. Train-tracks
(You figure it out. :wink:)

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