In the early years of the 20th century, a leading model of the structure of the atom was that of the English physicist J. J. Thomson (the discoverer of the electron). In Thomson's model, an atom c embedded negativeed of a sphere of positively ch ips in ain which were charged electrons, like chocolate a ball of cookie dough Previous Answers Consider such an atom consisting of one electron with mass m and charge -e, which may be regarded as a point charge, and a uniformly charged sphere of charge +e and radius R v Correct Part B In Thomson's model, it was assumed that the positive material provided little or no resistance to the motion of the electron. If the electron is displaced from equilibrium by a distance r less than R. find the net force on the electron. Express your answer in terms of the variables R, e, vector r and constants and co. Use the 'vec' button to denote vectors in your answers. AE Submit Previous Answers Reguest Answer

In the early years of the 20th century, a leading model of the structure of the atom was that of the English physicist J. J. Thomson (the discoverer of the electron). In Thomson's model, an atom c embedded negativeed of a sphere of positively ch ips in ain which were charged electrons, like chocolate a ball of cookie dough Previous Answers Consider such an atom consisting of one electron with mass m and charge -e, which may be regarded as a point charge, and a uniformly charged sphere of charge +e and radius R v Correct Part B In Thomson's model, it was assumed that the positive material provided little or no resistance to the motion of the electron. If the electron is displaced from equilibrium by a distance r less than R. find the net force on the electron. Express your answer in terms of the variables R, e, vector r and constants and co. Use the 'vec' button to denote vectors in your answers. AE Submit Previous Answers Reguest Answer

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Ising model of Ferromagnets

The Ising model is one of the easiest and most famous theoretical models for ferromagnetism in statistical mechanics. When a group of atomic spins aligns such that their magnetic moments are pointed in the same direction and produce a strong permanent magnetic moment in macroscopic size, the phenomenon is called ferromagnetism. The relative permeability of these magnets is greater than unity and increasing magnetization with the applied external field. Even in the absence of an external magnetic field, these substances retain spontaneous magnetization. An example of ferromagnets is iron.

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In the early years of the 20th century, a leading model of the structure of the atom was that
of the English physicist J. J. Thomson (the discoverer of the electron). In Thomson's
model, an atom consisted of a sphere of positively charged material in which were
embedded negatively charged electrons, like chocolate chips in a ball of cookie dough.
Consider such an atom consisting of one electron with mass m and charge -e, which
may be regarded as a point charge, and a uniformly charged sphere of charge +e and
radius R.
INU
Submit
Previous Answers
v Correct
Part B
In Thomson's model, it was assumed that the positive material provided little or no resistance to the motion of the electron. If the electron is displaced from equilibrium by a distance r less than R. find the net force
on the electron.
Express your answer in terms of the variables R, e, vector r and constants a and en. Use the 'vec' button to denote vectors in your answers.
?
F =
Submit
Previous Answers Request Answer

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An oil droplet is sprayed into a uniform electric field of adjustable magnitude. The 0.0400g droplet hovers motionless when the electric field is set to 370N/C and directed downward. a) What was the charge of the oil droplet in Coulombs? b) Determine the approximate number of excess or defecit electrons on the droplet.
Please explain Keatly 'aind cleardy with Equationo oShowrng the corest process Yand answees I have tilud tuwo way La(6). and only gethe same answeifor 10 Quest ioi (6). Thauk yau!/ An electron with a speed of 3.70 × 108 cm/s in the positive direction of an x axis enters an electric field of magnitude 2.74 x 103 N/C, traveling along a field line in the direction that retards its motion. (a) How far will the electron travel in the field before stopping momentarily, and (b) how much time will have elapsed? (c) If the region containing the electric field is 4.17 mm long (too short for the electron to stop within it), what fraction of the electron's initial kinetic energy will be lost in that region? (a) Number i 0:0142239849 Units meteRs (b) Number i 7.69X 10 - 9 seconds Units (c) Number i -1 i Units
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[Numbers change] In the early 1900's Robert Millikan discovered the peculiar property that charge came in little packets, no smaller than e = 1.602 x 10-19 C -- he had measured the charge of the electron. Here's (roughly) how he did it. He removed an electron from an initially neutral droplet of oil with diameter 0.8 um. In a vacuum, he positioned the droplet between two metallic plates separated by 4 mm and fiddled with the potential (voltage) across the plates until the droplet would hover against the force of gravity. Droplets of this size with +e charge would hover, but only for a particular voltage (otherwise they would sink or rise). Given the parameters stated here, and the fact that the density of the oil was 815 kg/m³, what was the voltage that made the droplets hover? (give your answer with 0.1 V precision)
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In the early 1900's Robert Millikan discovered the peculiar property that charge came in little packets, no smaller than e = 1.602 x 10-19 C -- he had measured the charge of the electron. Here's (roughly) how he did it. He removed an electron from an initially neutral droplet of oil with diameter 0.5 ??μm. In a vacuum, he positioned the droplet between two metallic plates separated by 6 mm and fiddled with the potential (voltage) across the plates until the droplet would hover against the force of gravity. Droplets of this size with +e charge would hover, but only for a particular voltage (otherwise they would sink or rise). Given the parameters stated here, and the fact that the density of the oil was 831 kg/m3, what was the voltage that made the droplets hover? (give your answer with 0.1 V precision)