A spinning roulette wheel has slowed down to an angular velocity of 2.47 rad/s. During this time, the wheel has an angular acceleration of -5.99 rad/s2. Determine the angular displacement of the wheel.

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?