What type of plate boundary would be found along the coast line near japan's volcanic mountain ranges

After a car's engine has been running for a while, if you stand near the car's engine you can often feel heat coming from the engine as a result of a. radiation b. convection c. conduction

Current enters a circuit at a: 1.positive terminal 2.negative terminal 3.low potential side 4.resistor

Iron is a transition metal with multiple oxidation numbers. (answer the following) a. what is the iron (ii) ion? how does it differ from the iron (iii) ion? b. if iron were to bond with oxygen, predict the formula for each oxidation number of iron. c. how would each formula be named?