A research-level Van de Graaff generator has a 1.95 m diameter metal sphere with a charge of 5.25 mC on it. An oxygen atom with two missing electrons is released from rest near the Van de Graaff generator. What is its kinetic energy in MeV at the distance of 47.25m?

The next 5 questions all have to do with the diagram shown, on which I have placed an electron at the origin. The grid spacing is 1 Angstrom per small square. Now place an atomic nucleus with 6 protons on positive x-axis, at x = 4.7 Angstroms. How much work did it take you to bring this nucleus in from 1 m away?     15.7 eV     18.4 eV     12.9 eV     23.9 eV

1.2 nm 0 + 1.6 nm Proton V X 1.92 x 10³ T. out of the page 1.25 x 103 T. out of the page. 2.33 x 10-3 T, out of the page 8.33 x 10-3 T, out of the page 2.33 x 10-3 T, into the page 1.25 x 10-3 T, into the page 1.54 x 10-3 T, out of the page 8.33 x 10-3 T, into the page 1.92 x 10-3 T. into the page 1.54 x 10-3 T. into the page. Electron An electron and a proton are each moving at 4.80 x 105 m/s in perpendicular paths as shown in the figure. At the instant when they are at the positions shown in the figure, find the magnitude and direction of total magnetic field proton and electron produce at the origin. (e = 1.60 x 10-¹9 C)

6. The radius of the central wire of a Geiger counter is (a – 200 um) and the radius of the hollow cylinder is (b – 2.50 cm). What potential difference between the wire and the cylinder produces an electric field of (E – 3.00 x 104 V/m) at a distance of (r – 2.00 cm) from the axis of the wire? First derive theoretically the potential of the inner wire with respect to the outer cylinder.

In a Millikan oil-drop experiment, a uniform electric field of 6.66 x 105 N/C is maintained in the region between two plates separated by 1.31 cm. Find the potential difference between the plates. MI Number i Units

The Bohr radius ao is the most probable distance between the proton and the electron in the Hydrogen atom, when the Hydrogen atom is in the ground state. The value of the Bohr radius is: 1 ao = 0.529 angstrom. One angstrom is 10-10 m. What is the electric potential produced by the proton at a distance of 2.14 Bohr radiús away from the proton? What is the potential energy of the proton- electron system when they are at this distance from each other?

I have placed an electron at the origin. The grid spacing is 1 Angstrom per small square. Now place an atomic nucleus with 13 protons on positive x-axis, at x = 4.2 Angstroms. How much work did it take you to bring this nucleus in from 1 m away?       53.4 eV     35.6 eV     44.5 eV     26.7 eV