Problem 2.40. For each of the following irreversible processes, explain how you can tell that the total entropy of the universe has increased. (a) Stirring salt into a pot of soup. (b) Scrambling an egg. (c) Humpty Dumpty having a great fall. (d) A wave hitting a sand castle. (e) Cutting down a tree. (f) Burning gasoline in an automobile.
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Sri K.
a. Select all processes where entropy is increased: - Going from 3 microstates to 2 microstates - Water going from 50°C to 10°C - NaCl dissolving in water b. Select all of the spontaneous processes: - Iron rusting - Diamond turning into graphite - A ball rolling down a hill - Ice melting at -100°C - Water freezing - Water melting
Adi S.
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