Question: Assuming all channels are airtight (no gas leakage) and completely filled with the same liquid, the rightmost cup—together with the liquid inside it—is raised as a whole by a fixed height (the other cups stay where they are). After the system is left to settle to equilibrium, how will the heights of the five liquid surfaces most likely compare relative to the tabletop?
A. Only the rightmost one is higher; the others are unchanged.
B. Each rises by the same amount relative to its own cup bottom.
C. They remain at nearly the same height.
D. They form a sawtooth pattern, depending on the connection order.
Clues:
1. There are five transparent glasses arranged in a line.
2. The glasses contain a blue liquid.
3. Orange, flexible straws connect each adjacent pair of glasses.
4. The straws are bent over the rims of the glasses, with one end in the liquid of one glass and the other end in the liquid of the next, forming siphons.
5. In the top image, the liquid level in the rightmost glass is lower than in the other four glasses.
6. In the bottom image, the liquid levels in all five glasses are approximately the same.
Answer: C
Category: Physics