Question: While keeping the operation of “blowing from the open end” unchanged, which modification would most improve the success rate of a small clump entering the device?
A. Increase the airflow speed
B. Decrease the clump’s mass
C. Add a small hole at the end far from the opening
D. Coat the inner wall with a layer of liquid
Clues:
1. The image is a diptych showing a clear plastic bottle on a green surface.
2. In the left panel, a small crumpled red paper ball is positioned at the mouth of the bottle.
3. The bottle is lying on its side.
4. In the right panel, the red paper ball is shown in motion, moving away from the bottle's opening.
5. A blurry white tube, possibly a straw, is visible behind the moving paper ball in the right panel, suggesting air is being blown.
6. The bottle has a red plastic ring around its neck, below the threads.
Answer: C
Category: Physics