College Physics
OER 2016 Edition
ISBN: 9781947172173
Author: OpenStax
Publisher: OpenStax College
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Chapter 13, Problem 5CQ
Thermal stresses caused by uneven cooling can easily break glass cookware. Explain why Pyrex®, a glass with a small coefficient at lineal expansion, is less susceptible.
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Bridges are usually constructed with expansion joints so that they do not bucklewhen heated. Assume that the expansion joint of a bridge is dominated bystructural steel with a linear thermal expansion coefficient of ?? = 1.0 × 10−5/℃.Suppose we wish to design expansion joints in a bridge that will be exposed totemperatures ranging from - 40 °C to + 40 °C.(a) At what temperature will the gap in the joint be the largest?(b) How long can a section be if it can expand no more than 3.0 cm?
A steel rod is initially 1 meter long at a temperature of 20°C. Assuming that the expansion is uniform along the entire length of the rod , if the coefficient of linear expansion for steel is 11 x 10^-6 per degree Celsius, calculate:
a) The change in length of the rod when its temperature is increased to 100°C.
b) The final length of the rod at 100°C.
- Your answer is partially correct.
An aluminum cup of 140 cm3 capacity is completely filled with glycerin at 25°C. How much glycerin will spill out of the cup if the
temperature of both the cup and glycerin is increased to 30°C? (The linear expansion coefficient of aluminum is 23 x 10-6 1/C°. The
coefficient of volume expansion of glycerin is 5.1 x 10-4 1/C.)
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Chapter 13 Solutions
College Physics
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