Question: Quenching is the process of immersing a hot metal object in a bath for a specified time to improve properties such as hardness. A copper

Quenching is the process of immersing a hot metal object in a bath for a specified time to improve properties such as hardness. A copper sphere 25 mm in diameter, initially at 300°C, is immersed in a bath at 0°C. Measurements of the sphere's temperature versus time are shown here. Plot the data and find a functional description of the data.

Time (s) 0 0.2 03 0.4 0.5 0.6 TemperatureC)300 150 75 35 12 5 0

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