Which of the following are types of matter?
e
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check all that apply.
a. substance
b. mixture
c. force
d. compound
e. sunlight

Zeros that follow non-zeros numbers and are also to the right of a decimal point are significant

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 determines the amount of inertia an object has