Q1. A sealed bottle has water in it, and two tubes enter the bottle through the seal. Tube B is attached to a pump at one end, and the other end is above the water surface. If tube A is immersed 0.15 m under water surface and the other end is open to the air. What is the least pressure obtained inside the bottle? What will happen when this pressure is reached?
Q2. A propeller spins at 1750 rev/min.
(a) what is the angular velocity in rad/s?
(b) What is the angular displacement of the propeller in 4.9 s?