G In many problems where the potential energy is considered between two objects, the potential energy is defined as zero when the particles are in infinite distance apart. Using the definition of potential energy, explain why the potential energy would be positive if the force between the particles is repulsive and negative if the force between the particles is attractive for noninfinite distances.

.) the observation by semmelweis that more mothers died of childbed fever when their doctors also worked in the morgue

radiation warms things up temp rises convection currents air circ windy weather

probably not if net force is zero

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it