A liquid of density 1390 kg/m31390 kg/m3 flows steadily through a pipe of varying diameter and height. At Location 1 along the pipe, the flow speed is 9.37 m/s9.37 m/s and the pipe diameter d1d1 is 12.3 cm.12.3 cm. At Location 2, the pipe diameter d2d2 is 15.9 cm.15.9 cm. At Location 1, the pipe is Δy=9.83 mΔy=9.83 m higher than it is at Location 2. Ignoring viscosity, calculate the difference ΔPΔP between the fluid pressure at Location 2 and the fluid pressure at Location 1.

Adiver named jacques observes a bubble of air rising from the bottom of a lake (where the absolute pressure is 3.50 atm) to the surface (where the pressure is 1.00 atm). the temperature at the bottom is 4.00 ∘c, and the temperature at the surface is 23.0 ∘c. what is the ratio of the volume of the bubble as it reaches the surface (vs) to its volume at the bottom (vb)? if jaques were to hold his breath the air in his lungs would be kept at a constant temperature. would it be safe for jacques to hold his breath while ascending from the bottom of the lake to the surface?