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# Increasing Carnot Efficiency

SATPHY-QZEXN7

A heat engine utilizes a heat source at $850.0^{\circ}$ Celsius and has an ideal (Carnot) efficiency of $35.00\%$.

Without changing anything else, what must be the temperature of the heat source to increase the Carnot efficiency of this engine to $45.00\%$?

A

$1889^{\circ}$ Celsius

B

$1004^{\circ}$ Celsius

C

$382.5^{\circ}$ Celsius

D

$1054^{\circ}$ Celsius

E

$895.0^{\circ}$ Celsius