Question 13, chap 122, sect 4. part 1 of 2 10 points One of the most efficient engines ever built is a coal-fired steam turbine in the Ohio valley, driving an electric generator as it operates between 1870 C and 430 C. What is its maximum theoretical efficiency? Question 14, chap 122, sect 4. part 2 of 2 10 points Its actual efficiency is 42%. How much mechanical power does the en- gine deliver if it absorbs 214000 J/s of energy each second from the hot reservoir? Answer in units of kW