What is the difference between electrical and electronic devices? Why are some components said to be electronical, and a circuit electrical?

Atrain departs from its station at a constant acceleration of 5 m/s. what is the speed of the train at the end of 20s?

The free body diagram shows a box being pulled to the left up a 25-degree incline. the magnitude of the normal force is

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