6. A jogger runs 7 km north, 3 km east, then another 2 km north. If they did this in 4 hours, what was their average velocity?

Asap time is ! best answer gets compose at least one well-developed paragraph on the following: define the term concurrent powers, and give an example of a concurrent power of government.

What is a carrier wave and how does it affect what you hear on the radio

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?