### Plot the results as temperature versus time

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Q1. A pure copper sphere of radius 1 cm is dropped into an agitated oil bath that has a uniform temperature of 130C. The initial temperature of copper sphere is 20C. Using a spreadsheet predict the internal temperature of sphere at 5-min intervals until it reaches 128C for three different convective heat-transfer coefficients: 5, 10, and 100 W/(m^2 C), respectively.

Plot your results as temperature versus time.

Q2. Examine the ways in which African society have utilized non-kinship groups base on age, skills and residence in their social and political organizations.

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