A billet of steel 30.5 cm in diameter,61 cm long, initially at 645 K, is immersed in an oil bath that is maintained at 310 K. if the surface conductance is 34W/m2'K determine the center temperature of the billet after 1 h.

The modern-day generator works on the principle of electromagnetic induction discovered by michael faraday in 1831-32. faraday discovered that the above flow of electric charges could be induced by moving an electrical conductor, such as a wire that contains electric charges, in a magnetic field.

The correct answer is  ait's a process by which rocks and minerals undergo in their composition^o^