Physics Laboratory Experiments
Physics Laboratory Experiments
8th Edition
ISBN: 9781285738567
Author: Jerry D. Wilson, Cecilia A. Hernández-Hall
Publisher: Cengage Learning
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Chapter 19, Problem 5Q

If flat strips of iron and brass were bonded together and this bimetallic strip were heated, what would be observed? Justify your answer, and draw a sketch of the situation. (Hint: See Appendix A, Table A3, for α’s.)

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What is the physical significance of the Biot number? Is the Biot number more likely to be larger for highly conducting solids or poorly conducting ones?
On a hot summer day, the density of air at atmospheric pressure at 35 °C is 1.1455 kg/m3.  What is the number of moles contained in 1 m3 of ideal gas at this temperature and pressure?  Avogadro’s number of air molecules has a mass of 2.85×10-2kg. what is the mass of 1 m3 of air? Does the value calculated in part (B) agree with the stated density of air at this temperature?
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