two electrons, separated by a distance r, in vacuum would be (taking k as the Coulomb constant) 4.0 x 1042 0.2 x 1042 O 2.7 x 1015
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- Two parallel plates are separated ?=0.00375 mx=0.00375 m and have a potential difference of ?=1610 V.V=1610 V. A small ball with mass ?=9.10×10−12 kgm=9.10×10−12 kg is placed between the two plates and remains motionless and floating between the plates. From the overall charge on the ball, determine the number of electrons ?ene the ball has gained or lost. The acceleration due to gravity is ?=9.81 m/s2,g=9.81 m/s2, and the elementary unit of charge is ?=1.60×10−19 C.Say you have a point charge of one Coulomb and a hydrogen atom some distance away. Within what distance would the difference of forces on the proton and electron from the Coulomb charge exceed the attraction between the proton and electron that holds the hydrogen atom together. Treat the hydrogen atom as a proton and electron 0.53 × 10−10 m (a.k.a., one Bohr radius) apart.Two circular disks spaced 0.50 mm apart form a parallel- plate capacitor. Transferring 3.00×109 electrons from one disk to the other causes the electric field strength to be 1.00×105 N/C. [ What are the diameters of the disks?
- 16Please AsapIn this experiment oil drops are suspended in a vertical electric field against the gravitational force to measure their charge. If the mass of a negatively charged drop suspended in an electric field of 1.76 ✕ 10−4 N/C strength is 2.299 ✕ 10−20 g, find the number of excess electrons in the drop.
- A hydrogen atom when in its lowest energy state consists of a proton nucleus of charge +e (remember that +e = 1.6 x 10-19 C) and an electron of charge -e and mass of 9.1 x 10-31 kg. In the Bohr model of the atom, the electron moves around the nucleus in an approximately circular orbit with a radius of 0.52 x 10-10 m. The speed of the electron when in this lowest energy orbit is approximately 2.3 x 106 m/s. Imagine that we want to ionize this atom (that is free up the electron from its nucleus) by launching ANOTHER electron at the atom to break it apart. If we were to launch this electron from very far away from the atom, then how fast must it be launched in order to break apart the atom, so that all three particles (the proton and two electrons) end up at rest, very far apart?Recall Coulomb's Law, which says that |?|=?|?1?2|?2|F|=k|Q1Q2|r2 , where |F| is the size of the electrical force, the Qi are charges, r is the distance between the charges, and k is a constant. The units of k can be written as Ma Lb Tc Qd. What is b?