{"result":{"text":"eta equals 1 minus T subscript 2 over T subscript 1 equals W over Q\nspace space space space space space space space space space space space space space 1 minus 600 over 1200 equals fraction numerator W over denominator 50 cross times 10 cubed end fraction\nrightwards double arrow space space space space space space space space space space space space space space space space space space space space space 1 half equals fraction numerator W over denominator 50 cross times 10 cubed end fraction\nrightwards double arrow space space space space space space space space space space space space space space space space space space space space space W equals 25 cross times 10 cubed J equals 25 k J"},"status":"ok"}