1. On a nice winter day at the South Pole, the temperature rises to ?63°F. What is the approximate temperature in degrees Celsius?
2. An iron vat is 12 m long at room temperature (20°C). How much longer is it when it contains boiling water at 1 atm pressure?
3. An aluminum wing on a passenger jet is 26 m long when its temperature is 22°C. At what temperature would the wing be 6 cm (0.06 m) shorter?