April sits at rest on a skateboard. she has a mass of 55 kg. her friend throws her a watermelon (m=2kg) at a speed of 5 m/s. if she catches it, how fast will she, the skateboard, and the watermelon move

The two required components for a generator

The pressure proportional to the area a- inversely b- directly c- increase d-decrease

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?