Por favor resuelvan esta ficha completa se los suplico. si no repruebo el semestre

What property is a characteristic of a substance that can be observed and does not change the identity of the substance

Sort the images based on whether there's a force of attraction or repulsion between the magnets shown. attraction repulsion

Two point charges are separated by a certain distance. how does the strength of the electric field produced by the first charge, at the position of the second charge, change if the second charge is doubled? a. the field does not change b. the field strength decreases by half. c. the field strength doubles d. the field strength quadruples