Suppose you throw a ball vertically downward with a speed of 10 m/s. neglecting air friction what would be the speed of the ball one second later?

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

Which is not true about oxygen-17 and oxygen-18?

Which of the following bonds would be most polar? a. c-i b. c-br c. c-cl d. c-f e. c-o