In a BB gun, air (a diatomic gas which can be assumed to be ideal) is compressed to high pressure p0 by a hand pump. When the gun is fired, this air is released into the barrel to propel the pellet. Consider a gun whose barrel has cross-section 1.5 × 10−5 m2 and length 0.6 m. Before firing, the air is contained in a chamber of volume V0 = 2 × 10−7 m3. The pellet weighs 4 × 10−3 kg and leaves the gun with a velocity 150 m/s