There are 2.0 x 10^3 pounds in a ton. The Hoover dam located on the Colorado river between Arizona and Nevada was made with 6.6×10^6 tons of concrete. how many pounds of concrete were used to create the Hoover dam?

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the order for strong to weak forces such as

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

the fundamental forces are those forces that act between to objects or element to make interactions. there are four types of fundamental forces such as strong and weak nuclear forces (due to protons and electrons), electromagnetic force (due to the motion of electrons) and gravitational force (due to orbital movement of the planet). if these forces are arranged on the basis of their maximum strength then the order is

strong nuclear force → electromegnetic force → weak nuclear force → gravitational force

i need with 1.3.2 investigate cycling o2 and co2 apex

we need to see it

snell's law

refractve index = sin incidence / sin refraction