What is the quality of a substance that hinders the flow of electrons through it; the ratio of the voltage to the electric current?

Comutator

Conductor

Insulator

Resistor

grav forces affect all objects magnetic forces affect magnetic objects and electric currents

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y

answer///isobars;