A laboratory burner transfers 309 J of thermal energy into a 100. g borosilicate glass beaker, causing its temperature to rise by 3.69 °C. What is the specific heat of borosilicate glass?

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

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Often called simply "velocity," this is the velocity of an object at a particular moment in time.