Which option is the most accurate description of speed? a. the ball rolled down the hill in five seconds to reach the marker. b. the ball rolled down the five meter hill in five seconds. c. it took five seconds for the ball to be displaced five meters from the marker. d. it took five seconds for the ball to be displaced five meters north from the marker.

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

Write a full page that sumerizes thermodynamics it’s from the website visionlearnig

Ahorizontal force of 400.0 n is required to pull a 1760 n truck across the floor at a constant speed. find the coefficient of sliding friction.