Look at the diagram below. What is the potential difference at x?

In a laboratory, nakisha mixes sodium hydroxide solution with an indicator called phenolphthalein. when combined, they create a pink solution. nakisha wonders if mixing other solutions with phenolphthalein will also create this pink color. how could she use the scientific inquiry process to explore it further?

What are two different ways you could find the value of a? explain these methods.

Why does lightning travel from clouds to the ground?