gc textbook chapter 13 temperature and kinetic theory (id: 624a88a52)

本题目来源于试卷: gc textbook chapter 13 temperature and kinetic theory，类别为 通用国际物理

[问答题]
(a) Show that the change in thaa4j;ya22sf cqtzyqu9 m4 ,yor3:y (me density $\rho$ of a substance, when the temperature changes by $\Delta$T is given by $\rho$ = -$\beta$$\rho$$\Delta$T
(b) What is the fractional change in density of a lead sphere whose temperature decreases from 25 $^{\circ} $ C to -40 $^{\circ} $ C？

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