Asmall charged bead has a mass of 1.0 g. it is held in a uniform electric field of magnitude e = 200,000 n/c, directed upward. when the bead is released, it accelerates upward with an acceleration of 20 m/s2. what is the charge on the bead?

What is meant by the statement" the melting poin of glycerine is 13 degree celsius

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

Why don't you see your reflection in water with waves or repples