%3Cdiv%20class%3D%22page%22%20title%3D%22Page%201%22%3E%0A%3Cdiv%20class%3D%22la

Question

%3Cdiv%20class%3D%22page%22%20title%3D%22Page%201%22%3E%0A%3Cdiv%20class%3D%22layoutArea%22%3E%0A%3Cdiv%20class%3D%22column%22%3E%0A%3Col%3E%0A%3Cli%20class%3D%22c6%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c1%22%3EAn%20inventor%20claims%20to%20have%20built%20a%20machine%20that%0Aoperates%20as%20follows%3A%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cul%20class%3D%22c5%22%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3E100%20kg%2Fmin%20of%20steam%20at%20T%20%3D%20400%C2%B0C%20and%20P%20%3D%205bar%0Aenters%20the%20machine.%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3E100%20kg%2Fmin%20of%20saturated%20liquid%20water%20at%2040%C2%B0C%0Aleaves%20the%20machine.%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3E50%2C000%20kJ%2Fmin%20of%20shaft%20work%20is%20produced%20by%20the%0Asystem.%20There%20is%20no%20heat%20exchange%20with%20the%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3Esurroundings.%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3EAn%20undisclosed%20amount%20of%20nitrogen%20enters%20the%0Aprocess%20at%20315K%20and%201%20bar%2C%20and%20the%20same%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3Eamount%20of%20nitrogen%20leaves%20at%20300K%20and%201%20bar.%0AAssume%20the%20N%3C%2Fspan%3E%3Cspan%20class%3D%22c4%22%3E2%3C%2Fspan%3E%20%3Cspan%20class%3D%22c2%22%3Eis%20an%0Aideal%2C%20diatomic%20gas.%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3EKinetic%20and%20potential%20energy%20of%20all%20entering%0Aand%20leaving%20streams%20is%20negligible.%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3Cli%20class%3D%22c3%22%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3EThis%20is%20a%20steady%20state%20process%20that%20can%0Acontinue%20as%20described%20indefinitely.%3C%2Fspan%3E%3C%2Fp%3E%0A%3Cp%3E%3Cspan%20class%3D%22c2%22%3EWithout%20knowing%20anything%20else%20about%20how%20this%0Amachine%20works%2C%20what%20can%20you%20say%20about%20the%20feasibility%20of%20the%0Ainventor%E2%80%99s%20claim%3F%20%3C%2Fspan%3E%3C%2Fp%3E%0A%3C%2Fli%3E%0A%3C%2Ful%3E%0A%3C%2Fli%3E%0A%3C%2Fol%3E%0A%3C%2Fdiv%3E%0A%3C%2Fdiv%3E%0A%3C%2Fdiv%3E%0A

Explanation / Answer

the machine is an idle one

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