What is the scalar magnitude b, of the projection of b = -5ay + 4a, - 3a, along the vector a = 3ax + 4ay + 5a, direction? what is the vector projection ba along the vector a = 3ax + 4ay + 5a, direction?

When is a current produced? when the terminals of an electrochemical cell are connected by a wire if the electric circuit is opened in an electrochemical cell if the electrolyte is removed from an electrochemical cell when the electrodes are reversed in an electrochemical cell