Rod AB is held in place by the cord AC. Knowin and that c=840mm and that the moment about B of the force exerted by the cord at point A is 756 NM in the clockwise direction. Determine the tension in core AC

During cooling, the kinetic energy of the molecules falls. why does this happen? a.the motion of the molecules increases. b. the motion of the molecules slows down. c.the van der waals forces between molecules decrease d. the forces of attraction between the molecules are overcome.