4. A hot steel ball with initial temperature 100 °C is placed in a large pan of cold water with a temperature Tw that re

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4 A Hot Steel Ball With Initial Temperature 100 C Is Placed In A Large Pan Of Cold Water With A Temperature Tw That Re 1 (42.87 KiB) Viewed 18 times

4. A hot steel ball with initial temperature 100 °C is placed in a large pan of cold water with a temperature Tw that remains approximately constant at 20°C. A simple model for the thermodynamics in terms of the heat transfer q in J/s from the ball to the water is given below. -q = 5COT, 25(T) -T) = 4 (1) (5%) What will be the final temperature of the ball? (a) 100 °C (b) 120 °C (c) 20 °C (d) 60 °C (e) 25 °C (2) (5%) Approximately how long will it take for the ball temperature to become constant? (a) 100 s (b) 500 s (c) 25 s (d) 20 s (e) 1000 s