申論題

6. The figure shows a potential well for a particle that can move along an x axis. Four regions of the graph are lettered. Rank those regions according to the magnitude of the force that would act on the particle if it is the region, greatest first. () indicates a tie.

(A) C, (A,D), B (B) B, D, A, C (C) A, (B,D), C (D) (A,B,C,D) (E) (B,D), A, C