A house has a volume of 1200 m³ .


(a) What is the total mass of air inside the house at 15°C?

(I) To what temperature will 6800 J of heat raise 3.0 kg of water that is initially at 10.0°C?

(II) A small immersion heater is rated at 375 W. Estimate how long it will take to heat a cup of soup (assume this is 250 mL of water) from 15°C to 75°C.

(I) One end of a 64-cm-long copper rod with a diameter of 2.0 cm is kept at 460°C, and the other is immersed in water at 22°C. Calculate the heat conduction rate along the rod.

The temperature within the Earth’s crust increases about 1.0 C° for each 30 m of depth. The thermal conductivity of the crust is 0.80 J/s C° .

(a) Determine the heat transferred from the interior to the surface for the entire Earth in 1.0 h.