Eugenia Etkina; Alan Van Heuvelen; Gorazd Planinši?
ISBN #9780134601823
2nd Edition
2,244 Questions
Homework Questions
None
CONCEPT
DEFINITION
Atomic Physics
The study of atomic models and structure, detailing the evolution from classical orbit models (e.g., Bohr’s model) to quantum mechanics with quantized energy levels, quantum numbers, the uncertainty principle, and tunneling.
(a) Construct a graph of the magnitude of the $\vec{E}$ field-versus-position for the $\vec{E}$ ficld created by a point-like object with charge $+Q$, representing the $\vec{E}$ field magnitude as a function of the distance from the object. (b) Using the same set of axes, draw a graph for the field produced by an object of charge $+2 Q$ (c) Using the same set of axes, draw a graph for the field produced by an object of charge $-2 Q .$
A uranium nucleus has 92 protons. (a) Determine the magnitude of the $\vec{E}$ field at a distance of $0.58 \times 10^{-12} \mathrm{m}$ from the nucleus (about the radius of the innermost electron orbit around the nucleus). (b) What is the magnitude of the force exerted on an electron by this $\vec{E}$ field? (c) What assumptions did you make? If the assumptions are not valid, will the magnitude in part (b) be an overestimate or underestimate of the actual value?
The electron and the proton in a hydrogen atom are about $10^{-10} \mathrm{m}$ from each other. What quantities related to the $\vec{E}$ field can you determine using this information?
Use the superposition principle to draw $\vec{E}$ field lines for the two objects whose charges are given. Consider all objects to be point-like and choose the distance you want between them: (a) $+q$ and $+q ;(b)+q$ and $+3 q$ : (c) $+q$ and $-q$.
Use the superposition principle to draw $\vec{E}$ field lines for the following objects whose charges are given. Consider all objects to be point-like and choose the distance you want between them: $(a)+q$ and $-3 q ;(b)+q,+q$ and $-3 q$.