are spinning columns of air that cause random patterns of dark streaks on Mars’ surface. Hurricanes
Blizzards
Dust devils
Tornadoes
(Apologies for picking the wrong subject, there was no Astronomy category)

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?

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked

Abeam of electrons moves at right angles to a magnetic field of 4.5 × 10-2 tesla. if the electrons have a velocity of 6.5 × 106 meters/second, what is the force acting on the electrons? the value of q = -1.6 × 10-19 coulombs.