Which types of electromagnetic waves have wavelengths that are longer than those of visible light but shorter than those of microwaves?

gamma rays
x-rays
infrared light
radio waves

According to social exchange theory, altruistic behaviors benefit the individual who performs them. t/f

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

What occurs during a combustion reaction