A scuba diver has an air tank with a volume of 0.010 m3. The air in the tank is initially at a pressure of 1.0 × 107 Pa. Assuming that the diver breathes 0.500 L/s of air, find how long the tank will last at depths of
(a) 2.0 m and
(b) 20.0 m. (Make the same assumptions as in Example 13.6.)