Question 6: An Aluminum sphere with radius 1.5 cm at 40° C and the coefficient of volume expansion for Aluminum is 35 × 10-6 C-¹. If the final radius is 2 cm, what is the final temperature ? Question 7: Calculate the rate of heat transfer on a cold day through a rectangular glass door that is 26 cm wide and 14 cm high, has a thickness of 6.2 mm, a thermal conductivity value of 0.437 W/m/°C. The temperature inside the home is 24°C and the temperature outside the home is -12°C. Question 8: furnace inside temperature of 3270 K has a glass circular viewing of 8 cm diameter. If the amount of emissivity of glass is 0.08 and Stefan's constant = 5.67 x 10-8W/m²K4 Calculate the amount of heat lost by radiation per unit time.