Which of these is true of all simple machines? A. Input force is always less than output force.
B. Work input is always greater than work output.
C. Work output is always greater than work input.
D. Output force is always less than input force.

True or false graphs must include scales that increase by the same amount

Acar traveling at 22 m/s starts to decelerate steadily. it comes to a complete stop in 15 seconds. what is it’s acceleration?

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?