P-7 Please I need help with this question needed very clearly and step by step explanation and NEEDED ONLY TYPED SOLUTIONS PLEASE NO HANDWRITTEN please, will be really appreciated for your help.NEEDED ONLY TYPED SOLUTIONSNEEDED ONLY PROBLEM 66 66. (II) A real heat engine working between heat reservoirs at400 K and 850 K produces 600 J of work per cycle for a heatinput of 1600 J. (a) Compare the efficiency of this realengine to that of a Carnot engine. (b) Calculate the totalentropy change of the universe for each cycle of the realengine. (c) Calculate the total entropy change of theuniverse for a Carnot engine operating between the sametwo temperatures. (d) Show that the difference in workdone by these two engines per cycle is T AS, where T isthe temperature of the low-temperature reservoir (400 K)and AS is the entropy increase per cycle of the real engine.(See also Problem 49 and Section 20-8.)Do not do the following boxed problem (49), but since 66 cites it, here it is:49. (III) A general theorem states that the amount of energythat becomes unavailable to do useful work in any processis equal to T AS, where T is the lowest temperature avail-able and AS is the total change in entropy during theprocess. Show that this is valid in the specific cases of (a) afalling rock that comes to rest when it hits the ground;(b) the free adiabatic expansion of an ideal gas; and (c) theconduction of heat, Q, from a high-temperature (TH) reser-voir to a low-temperature (T) reservoir. [Hint: In part(c) compare to a Carnot engine.]

1st three subparts of Q no 66 will be solved according to Bartleby guidelines. a) The real…

Answered: 6. (II) A real heat engine working…

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