Find the ratio of the electric force (Fe) to the gravitational force (Fg) between a proton and an electron. Select one: 2.4 x 10^31 3.8 x 10^12 2.28 x 10^39 4.2 x 10^42

A 3.35×10−5 kg3.35×10−5 kg positively charged ball with charge ?=7.75×10−6 Cq=7.75×10−6 C is resting on a flat, frictionless horizontal surface. For a time of ?=0.255 s,t=0.255 s, a constant electric field of magnitude ?=635 N/CE=635 N/C is directed vertically to the ball, which makes the ball rise to a height of ?.d. After this time, the electric field is turned off and the ball returns to the surface. Calculate, in meters, how high the ball is lifted off of the surface during the time ?.

Inside a cathode ray tube, an electron is in the presence of a uniform electric field with a magnitude of 275 N/C. (a) What is the magnitude of the acceleration of the electron (in m/s2)?                            m/s2 (b) The electron is initially at rest. What is its speed (in m/s) after 1.20 ✕ 10−8 s?                            m/s

An electron and a proton are separated by a distance of 1.9 x 10-10 m (roughly the diameter of a single atom). The masses of the electron and proton are me = 9.11 x 10- kg and 1.673 × 10-2' kg, respectively. The elementary charge mp e = 1.602 x 10-19 C. The universal gravitational constant G = 6.67 x 10 N-m²/kg² and the coulomb constant k = 8.988 × 10° N-m²/C2. What is the magnitude F, of the electric force between the electron and the proton? Fe= N. What is the magnitude F, of the gravitational force between the electron and the proton? Fg In this scenario, how many times stronger is the electric force than the gravitational force? Fe Fg about us privacy policy terms of use contact us help careers || %3D