If I have an aluminum cylinder whose radius is 5cm and height is 4cm and initially its T is 50°C. The aluminum's density is 2.7g/?cm?^3. If I put it into 1000mL water and initially the water is 90°C, (1) what is the final temperature of the cylinder and water?
(2) How much heat is transferred from water to cylinder?
(3) If I put the aluminum cylinder into cold water whose initial T is 50°C, then what is the final T now?