1. A red-hot piece iron rod (of mass 2.00 kg and of temperature 880 K) is thrown into a huge lake of temperature 280 K. Assume that the lake is so large that its temperature rise is insignificant. (a) On taking iron's specific heat capacity as a constant value of 450 J. K$^{-1}$ kg$^{-1}$, find the change in the rod's entropy. (b) Find the change in the lake's entropy? Is the second law of thermodynamics affirmed? Explain.
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- Mass m = 2.00 kg - Initial temperature of rod Ti = 880 K - Final temperature (lake temperature) Tf = Tlake = 280 K - Specific heat c = 450 J K^-1 kg^-1 Show more…
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