Two Carnot engines \( \mathrm{A} \) and \( \mathrm{B} \) are operat...

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Two Carnot engines \( \mathrm{A} \) and \( \mathrm{B} \) are operated in series. The first one A receives heat at \( 800 \mathrm{~K} \) and rejects to a reservoir at temperature \( \mathrm{T} \mathrm{K} \). The second engine \( \mathrm{B} \) receives the heat rejected by the first engine at temperature \( \mathrm{T} \) and in turn rejects to a heat reservoir at \( 300 \mathrm{~K} \). Calculate the - temperature T K for the following situations :
The efficiencies of the two engines are equal.
\( \mathrm{P} \)
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