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(Solved): Molten lava at 900 C is discharged into air at 28 C. If the
lava cools down to 820 C in 3 hour ...
Molten lava at 900 °C is discharged into air at 28 °C. If the
lava cools down to 820 °C in 3 hours, how many hours will it take
the lava to cool down at (a) 500 °C, (b) 120 °F? (c) What is the
temperature of the lava after 23 hours?
As, per Newton's law of cooling, temperature at time t, T(t) is given by T(t) = Ts + (To - Ts) e-kt Where temperature of surounding, Ts = 28o C Time, t = 3 hrs Temperature of th