Two 18 cm-long thin glass rods uniformly charged to +10nC are placed side by side, 4.0 cm apart. What are the electric field strengths E1, E2, and E3 at distances 2.0 cm, and 3.0 cm to the right of the rod on the left, along the line connecting the midpoints of the two rods? A) Specify the electric field strength E1.
B) Specify the electric field strength E2.
C) Specify the electric field strength E3.

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

Samir watches a 100-minute movie on his spaceship. maria's spaceshipe flies in the same direction as samir's spaceship but she observes his move to last 125 minutes and his spaceship to be 40 m long. how long does samir observe his own spaceship to be? according to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does marias voyage take according to samir?

Which compound is held together by the electrostatic force between two ions? a. co2 b. cci4 c. h2s d. mgf2