Answered: 1) How much charge (in Coulombs) does…

Science

Physics

1) How much charge (in Coulombs) does one mole of electrons have?

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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3. An isolated system consists of two metal spheres, with sphere 2 having twice the radius of sphere 1. Both spheres are initially charged as shown in the initial figure. The two spheres are then brought into contact with each other so that charge, in the form of electrons, is transferred between them. The spheres are then separated as shown in the final figure, where they have unknown charges, q and q2. Since sphere 2 has twice the radius, it will have twice the amount of charge than sphere 1 in the final state. Find q, q and the number of electrons transferred between the spheres. Hint: The net charge of the two-sphere system is conserved, since it is an isolated system. initial electron transfer between spheres final 91 = +12.0 μC 9₁ = ? q2 = -3.00 μC 9₂ = ?
3. There is a sodium ion, Na (1+, 23.0 amu) and a sulfide ion, S (2-) (32.1 amu) located in certain positions and the force on the sulfide ion is measured to be (500 N, 45 °). Without calculating, determine the true statement. Answers: a) Sulfur Accelerates More Than Sodium Per Charge. b) The force on sodium is (500 N, -135 °). c) Sodium slows down. d) You can't know without doing calculations.
1. Common static electricity involves charges ranging from nanocoulombs to microcoulombs. (a) How many electrons are needed to form a charge of −9.10 nC? electrons (b) How many electrons must be removed from a neutral object to leave a net charge of 0.520 µC? electrons 2. What net charge would you place on a 412 g piece of sulfur if you put an extra electron on 1 in 1012 of its atoms? (Sulfur has an atomic mass of 32.1.) 4. What is the repulsive force between two pith balls that are 10.0 cm apart and have equal charges of −39.0 nC?-------N 6.How far apart (in mm) must two point charges of 65.0 nC (typical of static electricity) be to have a force of 5.50 N between them? 7. a.What is the direction of this force (away from or toward the +6 µC charge)? away from the +6 µC chargetoward the +6 µC charge ---------mm A test charge of +9 µC is placed halfway between a charge of +6 µC and another of +7 µC separated by 17 cm. (b) What is the magnitude of the force (in N)…
3. Two small aluminium spheres weighing 10 g each are suspended by 10-cm-long silk threads from two hooks separated 10 cm apart. When the spheres are uncharged, the silk threads are vertical due to the gravitational pull of the earth (the effect of gravity between the two spheres is negligible). A fraction of the electrons from each sphere is then removed, leaving behind a net positive electric charge on each sphere. Once the spheres are charged, they move away from each other causing the thread to hang at 45 degrees from vertical. a) What is the net positive charge on each sphere? Hint: The horizontal and vertical forces acting on each sphere must be equal for the net force to be along a 45 degree angle. b) Given that the atomic mass of Aluminium is 27 and the atomic number is 13, what percentage of total electrons of the aluminium spheres need to be taken away to achieve this scenario?
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4.) Figure Q.2 (b) shows a cylindrical structure with length of 50 m. The inner and the outer surface are separated by free space and located at r = a and r = b respectively. The inner and outer surface of the structure contain a total charge of +1pC and -1pC, respectively. An infinitely long line charge with line charge density of +1pC/m is introduced along the axis of the structure. Given that a = 1 mm and b = 2 mm. +pa C/m? -Рь С/m? Figure Q.2(b) i. Calculate +pa and -pp at radius a and b respectively ii. Find D and E in all regions iii. Sketch graph |D| versus r