Points A and B have electric potentials of 310 V and 200 V, respectively. When an electron released fromrest at point A arrives at point C, its kinetic energy is K_{\rm{A}}. When the electronis released from rest at point B, however, its kinetic energy whenit reaches point C is K_{\rm{B}} = 2K_{\rm{A}}.

What is the electric potential at point Cand what is the kinetic energy K_{\rm{A}}?

Three different objects, all with different masses, are initially at rest at the bottom of a set of steps. each step is of uniform height . the mass of each object is a multiple of the base mass : object 1 has mass 4..00m , object 2 has mass 1..96m , and object 3 has mass . when the objects are at the bottom of the steps, define the total gravitational potential energy of the three-object system to be zero. if the objects are then relocated as shown, what is the new total potential energy of the system? each answer requires the numerical coefficient to an algebraic expression. each algebraic expression is given using some combination of the variables , , and , where is the acceleration due to gravity. enter only the numerical coefficient. (example: if the answer is 1..23mgd , just enter 1.23)