a car goes around a curve of radius r at a constant speed. what is the direction of the net force on the car

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

What is special about a dc circuit ?

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?