1.) Calculate the mass of a solid gold rectangular bar that has dimensions lwh = 4.30 cm ✕ 14.0 cm  ✕ 27.0 cm. (The density of gold is 19.3 ✕ 103 kg/m3.) kg

2.)A brass ring of diameter 10.00 cm at 17.3°C is heated and slipped over an aluminum rod of diameter 10.01 cm at 17.3°C. Assume the average coefficients of linear expansion are constant.

(a) To what temperature must the combination be cooled to separate the two metals?

(b) What if the aluminum rod were 10.06 cm in diameter?
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