Una caja de 4kg que se desplaza hacia la derecha a 7m/s choca contra otra de 3Kg que se mueve en sentido contrario, a 3,6m/ s. Después del impacto, ambas cajas se mantienen unidas ¿con que velocidad avanza.?

In what direction does an applied force move an object

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.

What is the moment of inertia i of this assembly about the axis through which it is pivoted? express the moment of inertia in terms of mr