* Question 2 Air is introduced through a nozzle into a tank of water to form a stream of bubbles. If the bubbles are intended to have a diameter of 2 mm, calculate by how much the pressure of the air at the nozzle must exceed that of the surrounding water. Assume that the surface tension of water is 0.073 N/m. What could be absolute pressure inside the bubble if the surrounding water is at 100 kPa.