1)
How does Hashem plunder Bavel?
1.
Radak: He removes the commotion. It used to be a noisy city due to its great population.
2.
Malbim: Through Hashgachah (He overrides the Ma'arachah).
2)
What is the meaning of "Nitan She'on Kolam"?
1.
Rashi: The sound of their screaming is heard.