Cell membranes are primarily made of a component that contains fatty acids. this component is most likely carbohydrate. protein. nucleic acid. lipid.

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 radius of an atom is closest in size to a

Aspring that is stretched 2.6 cm stores a potential energy of 0.053 j. what is the spring constant of this spring?