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Consider a two-electron atom in which the electrons, orbiting a nucleus of charge +Ze, follow Bohr-like orbits of the same radius r, with the electrons always on opposite sides of the nucleus.
(a) Show that the net force on each electron is toward the nucleus and has magnitude The energy needed to remove both electrons is just the negative of the energy you found in part.
(d). Compute the energy needed to remove both electrons in helium, and then repeat for Li+. Compare your results with the experimental values of 79.0 eV and 198 eV, respectively.
An airplane has an effective wing surface area of 15 m2 that is generating the lift force. What is the weight of the plane
A friend in a spaceship travels past you at a high speed. He tellsyou that his ship is 22 m long and thatthe identical ship you are sitting in is 19 m long. According to your observations, how long is your ship
A cylinder is rotating about an axis that passes through the center of each circular end piece. Obtain the magnitude of the angular deceleration of cylinder
Using a theodolite, with a laser rangefinder, a researcher at point A locates a pair of rare birds nesting at point B, For observation from point C, determine the direction angles and distance to the nest at B
a certain region of space bounded by an imaginary closed surface contains no charge. is the electric field always zero
the 1994 winter olympics include theaerials competition in skiing. in this event skiers speed down aramp that slopes sharply upward at the end. what isthe skiers launch speed
A thin lens has a focal length of 10.00 cm for red light. If the index of refraction for the lens material tends to decrease with increasing wavelength
a person takes a trip, driving with a constant speed of89.5km/h except for a 22 min rest stop. how much time is spent on the trip
q1. find flux due to a point charge q on a rectangle of sides l x b at a distance r from the charge along the center of
A 1.0 centimeter diameter pipe widens to 3 centimeter, then narrows to 6.8 millimeter. Find what is the volume flow rate through the pipe
When one marble hit the end of the line of marbles, how many shot off the other end? Describe the momentum of the set of marbles before and after the collision
Some telephoto cameras use a mirror rather than a lens. What radius of curvature mirror is needed to replace a 855 mm focal length telephoto lens?
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