Vesna vulovic survived the longest fall on record without a parachute when her plane exploded and she fell 6 miles, 551 yards. what is this distance in meters?

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

The energy produced as a result of this flow of electrons from atom to atom is called

Anika asks eva to roll a basketball and then a bowling ball to her. which requires more force to roll, and why?