A charge Q is placed at each of two opposite corners of a square of length a. A charge q is placed each of the other two corners. Of the resultant electric force on the two charges Q is zero, what is the mathematical relationship between Q and q

When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data? a. type of fertilizer b. amount of flowers c. amount of water d. number of days that the plants grew