A wave has a wavelength of 24 m/cycle and a period of 4 s/cycle. What is it’s speed?

Which set of characteristics best describes sedimentary rock? a) largest type of rock, made of organic matter, hardest type of rock b) often contains layers, forms near sources of water, contains fossils c) least abundant type of rock, made of other rocks, made mostly of minerals d) most abundant type in earth's crust, made of magma/lava, contains no fossils

Other than earth, is also known to have magnetic pole reversal? a: venus b: mars c: earths moon d: the sun

20 the compound al(nh3)2 has atoms of nitrogen.