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Question B5 (a) A very hot 0.8 kg copper cylinder at temperature 365.84℃ is dropped into a...

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Physics

Question B5

(a) A very hot 0.8 kg copper cylinder at temperature 365.84℃ isdropped into a 0.2 kg copper bowl contains 0.3 kg of water at 20℃.The final temperature of the system is 85℃. Given that specificheat of copper 386 J/kg·K and specific heat of water 4190J/kg·K.

(i) Find the entropy change ∆S1 of the copper bowl and water.

(ii) Find the entropy change ∆S2 of the copper cylinder.

(iii) Find the net entropy change ∆Snet of the system. Is theprocess reversible or irreversible?

(b) What are the four processes of Carnot cycle?

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