How many meters are there in 666 miles? (1 mi = 1609 m)

Acube has a volume of 2011 cubic inches. what is the angle measure between a side of a cube and its interior diagonal?

Glass is transparent to visibile light under normal conditions; however, at extremely high intensities, glass will absorb most of the light incident upon it. this works through a process known as multiphoton absorption. in this process, several photons are absorbed at the same time. if very intense light whose photons carry 2ev of energy is shined onto a material with a band gap of 4ev, that light can be absorbed through two-photon absorption, because two photons have the right amount of energy to bridge the band gap. what is the minimum number of photons of 800-nm light that are needed to equal or exceed the band gap of fused silica glass

Ain is , is 's of ? 0.62 0.79 1.27 1.50