Question: A heat engine that operates on a Carnot cycle has an efficiency of 0. 480 when its low-temperature reservoir is at (10^{circ} mathrm{C}). By how

A heat engine that operates on a Carnot cycle has an efficiency of 0. 480 when its low-temperature reservoir is at $10^{\circ} \mathrm{C}$. By how many degrees Celsius must you increase the temperature of the high-temperature reservoir to increase the efficiency to 0. 600 if you continue to use the same low-temperature reservoir?

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