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The Pyrex glass mirror in a telescope has a diameter of 180 in. The temperature ranges...

The Pyrex glass mirror in a telescope has a diameter of 180 in. The temperature ranges from -11°C to 38°C on the location of the telescope. In micrometers, what is the maximum change in the diameter of the mirror, assuming that the glass can freely expand and contract? The linear expansion coefficient of Pyrex glass is 3.2 × 10-6 /C°.

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