5 pontos 1. O fluxo de calor através de um
bloco de madeira de espessura 5cm
cujas temperaturas interna e
externa são 40°C e 20°C,
respectivamente, foi determinado
com o valor de 40W/m2. Determine
a condutividade térmica da
madeira. *

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

Using proper grammar, spelling, and punctuation, write at least one 5 sentence paragraph describing 3 ways we use the elements of the electromagnetic spectrum (ems) in our everyday lives.

The junction rule describes the conservation of which quantity? note that this rule applies only to circuits that are in a steady state.