A hollow glass has a density of 1.3 gram per cubic centimitres at 20 celcius. glycerine has a density of 1.26 gram per centimetre cubic at 20 celcius. At what temperature would the sphere begin to float in glycerine?

An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.