A box of mass 22 kg is at rest on a flat floor. The coefficient of static friction between the box and floor is 0. 37. What is the minimum force needed to set the box in motion across the floor?.

The voltage applied across a given parallel-plate capacitor is doubled. how is the energy stored in the capacitor affected?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.

Based on this activity, is kinetic energy always transformed into potential energy?