The photo shows a roller coaster. Assume that the system is closed. which roller coaster has the LEAST potential due to gravity

Now consider the reaction when 45.0 g naoh have been added. what amount of naoh is this, and what amount of fecl3 can be consumed by it?

This large tectonic plate is bounded on three sides by whats know as the ring of fire. what is the name of this tectonic plate? a) pacific plate b) eurasian plate c) north american plate d) indo- australian plate plz it's science but there's no option for science so i picked chemistry

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?