Conrad is required to prepare a bath for his younger brother Alex, According to the advice got from his mother, the bath should be between 40⁰C and 42⁰C. He (Conrad), however has 2 litres of hot water at 100⁰C and 6 litres of cold water at 20⁰C. All that Conrad has to do is mixing in an aluminum pan of mass 3.5kg and specific heat capacity 650 Jkg–¹K–¹, As a learner of physics, Help Conrad to establish and inform his mother whether the water is warm enough for Alex to bathe. In what ways would you prevent the water from cooling very fast and why would water be used as a coolant in Engines.​