12. A force produces potential U(x) = ax4. where a = 1.43 J/m4 . What is the force and direction whe
問題詳情
12. A force produces potential U(x) = ax4. where a = 1.43 J/m4 . What is the force and direction when theparticle is at x = -0.78 m? (A)ON (B)-0.67 N (C) 0.67N (D) -2.7 N (E) 2.7 N