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Thank you We sneak and here's your shmoop douceur brought

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to you by entropy with fancy word for chaos All

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right consider the following situations A pile of paper gets

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organized The lake freezes to gases are brought together and

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allowed teo mix that a gas undergoes a cycle like

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the one described in this pv diagram here In which

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of these cases does the intra pete increase select two

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answers And here the choice What No complicated equations No

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big number times ten to the million Physics is all

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about real life and interviews all too real Well entropy

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is a measure of order when the lack thereof the

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more order to system is the less entropy it has

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Conversely the less ordered a system is the more intricate

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hat accent right now interview can increase but it can't

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decrease entropy is part of the second law of thermodynamics

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and simplify it Entropy means that work can be converted

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perfectly into heat but he cannot be converted perfectly into

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work Well the most important part of entropy for the

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test is this entropy can stay the same if in

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action or process is reversible if the process is not

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reversible than entropy increases So let's look at our examples

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First of all organizing a pile of papers results in

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decreased interview wait didn't we just say entropy can't decreased

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Yeah we did In this example the act of organizing

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the papers creates heat energy that dissipates that's a loss

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of energy in the process of work In the best

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case scenario is that the total entropy remains the same

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This case though we're going from a state of less

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organization more organization the entropy shouldn't increase is not one

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of the correct choice What about the late going from

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liquid to solid As it freezes well again entropy isn't

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decreasing After all solids are more organized than those wild

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and crazy liquid it's watching around everywhere This is a

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reversible processes we'll see When spring comes the baby is

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also incorrect when two gases come together and mix though

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that's not reversible You can't just go out and grab

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all the molecules and put them one by one back

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in there to original gases see definitely increases entropy Andy

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shows a heat engine cycle that isn't reversible either really

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the on ly reversible heat engine cycle is a car

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not cycle and that's only theoretical and not possible in

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real life so not reversible equals increase entropy He is

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the other correct answer And remember next time your mom

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tells you to clean up the mess in your room

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just tell her that the universe always moves towards disorder

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and your action and clean can only stall the collapse

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not prevented so like why bother And if that works 00:02:53.233 --> [endTime] please let us know

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