For a particle of mass m and charge q moving in a circular path in a magnetic field B, find how does its kinetic energy depend on the radius of the curvature of its path r.

(A) kinetic energy of a particle is proportional to 1/r.
(B) kinetic energy of a particle is proportional to r^2
(C) kinetic energy of a particle is proportional to 1/r^2.
(D) kinetic energy of a particle is proportional to r.

An ascending elevator, hanging from a cable, is coming to a stop. part a part complete identify all forces acting on the elevator from the list below. select all that apply. select all that apply. kinetic friction normal force tension weight static friction submitprevious answers correct part b draw a free-body diagram of the object. draw the vectors starting at the black dot. the location and orientation of the vectors will be graded. the exact length of your vectors will not be graded but the relative length of one to the other will be graded.