As the train in the image moves to the right, which person hears the train horn at a lower pitch?

Two positive charges are equal. which has more electric potential energy?

The smallest particle of an element that retains its identity in a chemical reaction. true or false

What property of a wave determines the pitch? what property of a wave determines the volume? describe your reasoning and include the ways the simulation and tone generator influenced your thinking.will mark brainiest if your answer does make sense to the question asked.