An inventor tries to sell you his new heat engine that takes in $40 \mathrm {~J}$ of heat at $87 ^ { \circ } \mathrm { C }$ on each cycle, expels $30 \mathrm {~J}$ at $27 ^ { \circ } \mathrm { C }$, and does $10 \mathrm {~J}$ of work. Would it be wise to invest in this engine? Back up your conclusion with numerical calculations.

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The Answer of An inventor tries to sell you his new heat engine that takes in $40 \mathrm {~J}$ of heat at $87 ^ { \circ } \mathrm { C }$ on each cycle, expels $30 \mathrm {~J}$ at $27 ^ { \circ } \mathrm { C }$, and does $10 \mathrm {~J}$ of work. Would it be wise to invest in this engine? Back up your conclusion with numerical calculations.

An Inventor Tries to Sell You His New Heat Engine 40 J40 \mathrm {~J}40 J

An Inventor Tries to Sell You His New Heat Engine $40 \mathrm {~J}$