A carnot engine operating between temperatures T1 and T2 has efficiency 1/6. When T2 is lowered by 62 K, its efficiency increases to 1/3. Then T1 and T2 are, respectively, A carnot engine operating between temperatures T1 and T2 has efficiency 1/6. When T2 is lowered by 62 K its efficiency increases to 1/3. Then [...]