Asked by elisabeth

Given: the linear expansion coefficient of glass is 9 x 10^-6 ('C)^-1.

An automobile windshield has dimensions of 59 cm by 390 cm. What minimum spacing around the windshield is needed to prevent the windshield from breaking if the temp. changes by 146' F?

answer should be in units of mm.
Answered by Damon
The 390 changes most and is 3900 mm
delta L =9*10^-6 (146 *5/9) (3900)
Divide that by two because it is the total change in length and you get half of that on each side.
Answered by drwls
This question has been posted by the same person, over a period of a week. Please read the previous answers so we can concentrate on students who want to learn.
Answered by elisabeth
sorry for repeating it, but i was hoping to get a better answer because i didn't understand the one drwls gave last time...

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