Question: Heat the entire system shown in the diagram (the liquid is compatible with the container material and the seal is good), keeping all other conditions the same. To keep the small object inside at its original suspended height, how should you adjust your hand operation?
A. Decrease the squeezing
B. Keep it roughly unchanged
C. Increase the squeezing
D. Simply flip it quickly upside down and back
Clues:
1. A small brown vial is inside a larger clear plastic bottle.
2. The plastic bottle is filled with a clear liquid, likely water.
3. The bottle is sealed with a green cap.
4. A hand is shown squeezing the flexible plastic bottle.
5. When the bottle is not squeezed hard or at all, the vial floats near the top.
6. When the bottle is squeezed, the vial sinks.
7. The vial is positioned upside down, with its opening at the bottom, allowing it to trap air.
8. In the last frame, the vial is suspended in the middle of the liquid, indicating a state of neutral buoyancy achieved by a certain amount of squeezing.
Answer: C
Category: Physics