pa sagot po. plss

1.what is the efficiency of gasoline engines that receives 192.75J of energy from combustion and lose 125.25 J by heat to exhaust during one cycle?
EFFICIENCY
Qh-Qc
1 - Qh X 100 %

2.Suppose a steam engine receives steam at 600K.
the engine uses part of this thermal energy for work.it exhausts the rest to a condenser at a temperature of 350K.what is the maximum efficiency of this steam engine?

MAXIMUM EFFICIENCY=
[tex] 1 - \frac{tc}{th} [/tex]
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