A gas within a piston-cylinder assembly executes a Carnot power cycle during which the isothermal expansion occurs at TH = 500 K and the isothermal compression occurs at TC = 290 K.     Determine:   (a) the thermal efficiency.   (b) the percent change in thermal efficiency if TH increases by 5% while TC remains the same.   (c) the percent change in thermal efficiency if TC decreases by 5% while TH remains the same.

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Laws of thermodynamics

Thermodynamics is a field of research, which needs the creation of absolute and ideal states and logical and practical examination of the actual conditions. By considering all the laws and theories of thermodynamics, the chemical reactions, the occurrence of processes, and physiological functions can be predicted with this field.