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- A charge of 36.3 nC is transferred to a neutral copper ball of radius 4.35 cm. The ball is not grounded. The excess electrons spread uniformly on the surface of the ball. What is the number density (number of electrons per unit surface area) of excess electrons on the surface of the ball?04 Two very small spheres are initially neutral and separated by a distance of $6 cm. Suppose that 310¹1 electrons are removed from one sphere and placed on the other. (a) What is the magnitude of the electrostatic force that acts on cach sphere? (b) is the force attractive or repulsive? Why?1. Comsider fuo charnges y. - 37e and paitions (20, 88, 87) and C, = 18 e at -45 -1) 元,40) Respeekinly ane in the reale of 10-> matow. of parition wetar of the dlagge Vi is R, and change e is ñz where ll the coordinates meanured m Or nans Now consider anather charge V3 yz plem paudioned at *- n). caloulade nat fance d aeling - 30 e in the L18 4s - 18). c) Net Farce due to ather dengea on goeomponent-?,z eomponent -II due to alher ebarges! [n componel =? d) Net Farce on V2 [nemponent :?, g oumporant a?, zleamponant .? I e) ealeulate the net destmie field at the pandion of No due to ri an Nate that cant ealeulade deotrie you panikion . Own . field of No at it's Ln =? , g=?, z:?
- 7 alculate the electric Dohential due to adipde cuhose dipBle if this paint is kar 30 is u8x10 cmat apoint 1d X10 m away fom the clipole, and i (a) along the axis of the dlipole nearer Hhe Dositive charge 7(b) (45/above the akis but reeiler the sositive 30 Chage P=4.8r10 C.m.What is the dimension of volume charge density? a) [MLAT-2] b) [M0 L-3 A T] c) [M L-3 A T] d) [M L-2 A T]Ex1:- determine on expression for the volume charge density that gives rise to the field: a- D = e4*e-5ye-2z (2āx – 2.5āy – āz) b- D = e-2z(2pø āp + pāø – 2p²Øāz) -22 (2āx
- what is the magnitude of the electric porce of between attraction nucleus (q++26c) and its an on Innermost electron if the distance betveen them is 1.5810-12m?What is the charge of q if location A is 2.40 m from the charge, location B is 4.5m away from the charge, and Vb-Va=45V?person sCuffing her feet on wool rug a dry day a ccumulates a - 42µC How many On het charge of ex cess elecdrons des She get, and by how much does her mass Increase ? Use the charge per e lectron and the per electron: mass le - 9.11 s 10-31 %3D
- 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.Q/Let auniform surface chargedensity of 5nc/m be fresent at zso plane,auniform line charge darsity of8 nc/m be locatedat x-0,2=4 a point chargeof 2 Hc be prescat at p(e,0/.If Vso at (p,5), }ind Vatli, 2, 3)? Ans: 1-38 kvkqQ The variable r in Coulomb's law (F= kain radial direction) represents... The separation distance between the test charge and selected/given origin. The separation distance between the source charge and the selected/given origin. O The separation distance between two point charges, often denoted as test and source charge. The separation distance between two non-charged objects.