A very long, closed tube is placed vertically in a large open container of mercu
ID: 2108439 • Letter: A
Question
A very long, closed tube is placed vertically in a large open container of mercury. The volume of the container is much larger than the tube. All of the air is then sucked out of the tube such that the inside of the tube is a complete vacuum. Which statement best describes that height to which the mercury rises in the tube? The mercury will rise to the top of the tube regardless of the tube's length or width. The mercury will reach a certain height that is independent of the width of the tube The height to which the mercury rises depends on the width of the tube Blood flows through a coronary artery that is partially blocked by deposits along the artery wall. Through which pan of the artery is the flow rate (volume of blood per unit time) largest? The narrow part. The wide part. The flow rate is the same in both parts.Explanation / Answer
B) the mercury will rise in tube to balance the pressure on the fluid on the same level(which is regardless of the width of tube). at 1 atm it will rise to 76mm with convex miniscus.
C) the flow rate will remain same only the velocity will change. according to Q=a*v