The wavelength of the wave is 522 nm. What is the frequency of this radiation?.

We the people of the united states, in order to form a more perfect union, establish justice, insure domestic tranquility, provide for the common defence, promote the general welfare, and secure the blessings of liberty to ourselves and our posterity, do ordain and establish this constitution for the united states of america. according to the preamble which action represents an appropriate role for government

By what percent will the product of two numbers change, if the first number increases by 70%, while the second number decreases by 40%.

What percentage of the earth's water is available for use by living things?