attached images have 3 parts, solve those 3 parts and also because of limited images to upload, this is the 4th part, iam typing here: Calculate the total change in entropy for entire system, in J/K.

In Figure 1, the efficiency of a Carnot engine is listed as a function of thehot-reservoir temperature. The cold-temperature reservoir is unknown.Create a linear plot of the engine efficiency as a function of the hotreservoir temperature. (Notice that I didn’t say plot engine efficiencyversus TH; I said plot the engine efficiency as a function of TH, such that

Heat of amount 250 J is removed from a heat reservoir at a temperature of 270 K. What is the entropy change of the reservoir? Hint   ΔS=ΔS= J/KJ/K. (Use the sign to indicate whether entropy of reservoir increases or decreases.) Submit QuestionQuestion 9 It is found that an engine discharges 50 J while absorbing 85 J each cycle of operation. Hint   What is the efficiency of the engine? eff=eff= How much work does it perform per cycle? W=W= J

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