friction
A single curve cannot touch "each other" since "each other" implies two curves.
two lines that do not touch each other
Two south poles on two magnets will repel each other. A north and a south pole on two magnets will attract each other.
Friction.
Sparks
The union of two living things that depend on each other is co-dependence.
Contour lines can never touch each other, and they can never just stop, they have tonot go off the page or connect.
who cares!! :P
Conduction
Two positive charges will repel each other from a distance due to the electric force between them. They do not have to touch in order to feel the repulsive force. This repulsion is a fundamental property of electric charges.
The concentration of heat caused by pans that touch each other is called what?
Interdependence.