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?
