6. The least penetration radiation from a radioactive source a. Beta ray
b. Alpha ray
c. Gamma ray
d. X ray
7
The balflife of ada
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Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

How is zig zagging a form of 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?