State the law of conservatiodq8458 iqltbjc5+rj o n of electric charge.

  Is it possible for two negative charges to at 93hum)2oj.8n /hx)jnwwj th20s-b kfltb.ultract each other?

  Is it possible for a positive and a negati 9c* sfg9v,zn9 mqohb,ve charge to attract each other?

  A glass rod is rubbed with a piece of silk.msh2rc*.y)l p During the process the glass rod acquire ) sl*mcyhr.p2s a positive charge and the silk

  A proton carries a

  The model of the atom qm u,* 4,aj1x nt2w0jog :r/d7obrw hhshows a

  A neutral atom always hqogm2hrh -yk:l):h(s+hj6y f as

  An atom has more electrons than protons. pvwp;qd o:/zjgv:: v 9The atom is

  Materials in which the electrons are bound very tightl* dof.ug.0-o3 m ld+rcwgf/c yy to the nuclei are referred+mfo/dcwl . 3d g .crfugoy*0- to as

  Materials in which the electrons are bound very loosely to tfl,3k dslc e .umu:4x1he nuclei and can move about freely within . defslu:3 c1 kxu4l,mthe material are referred to as

  A negatively charged rod is 0nfeievi0.wy 8, 6uxf;qd(pqbrought near one end of an uncharged metal bar. The end of the metal bar farthest n.x0;d,( fi eepfw0uv 8iy6qq from the charged rod will be charged

  Sphere A carries a net porle1o0(u 2k bhsitive charge, and sphere B is neutral. They are placed near eace( lob21k h0urh other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrose t m580h0qiddcope positively?

  An originally neutral electroscope is briefly touched with a posjy:r sb;kil 09itively charged glass rodl ;0j:riks9y b. The electroscope

  An originally neutral electroscope is grut;- m2 xeln9o ock5sjp/x - yh7*vwb4ounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosco h-9o 7 w4ls2ptxbunym ;evx/5j*c-okpe

  A positive object touches a neutral electroscope, and thedtf 5lj 45s sf pav jl*+)v32y(+qajim leaves separate. Then a negative object is brought near the electroscope, buvi5tj ssql)a2 dy*3a5p++j4 (f lfv jmt does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tsg5);i+ a0ea3kb7j fkt hwgi)able. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object.g i)iwstjkh37+0a af)ke ;bg 5 What is the final charge on each ball?

  Charge is

  What are the units of thet(vk9a: h ud*f Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. qwe 3/)7i n7 g 2cwg)ruhvp)eg The first charge is larger in magnitude than the secoe q3p /7 whguw n2)7)i)gvgercnd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near h:oycq,2*:d bhumuk7 3mor3x ,hwv)c each other on an insulated table. Which statement best describes k:cu,oy32u 3h)cwod7, :b* hhrmvxq mthe electrostatic force between them?

  Two charged objects attract each other with a certain force. m3bmwn8 f ;w5q 2t cy0f4ka1ah If the charges on both objects are doubled with n48fha b at5mc0kw3n; fq21 mywo change in separation, the force between them

  Two charges are separated by a distance d and exert nym+vk -r v7(utaf+m(-c.4l0*,zrzc mi xfrbmutual attractive forces of F on eafa x- +7rz,.v( ym(ck bv*mtim0+rf4lnzc-ruch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happensk5 nemc: a.z5;dlys2 l to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is relm cl2y.:k5a esz5d;nduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. ih nw(2t2g7f-org7d fWhat happens to the magnitudtw2(d7hf n 72irofgg-e of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 3co 96eb sg:vqti;o bu+ fbh/4the magnitude of the force on the first electron if a second electron ifgbt ob:6 +9ovhu4c3is /b qe;s placed next to the proton?

  An electron and a proton are separatqr5v 1-qdnq3ved by a distance of 1.0 m. What happens to the size of tqq3 rqv 5d-n1vhe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second point cr hj pulf)),5pharge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the nu h5)lp )prf,jet electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid dplv;umr3: n7of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitu u3lr:p7mvd ;nde of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following iby:cr c, 1uxg e7uo(2js not a vector?

  At twice the distance from a point charge, the strength of the electrn2 hkfz ydq:e,3q8ug, ic field

  Is it possible to have a zero electric field value between s*,.o4ydxq tbi/hq y7a negative and positive charge along the line joining the twoq / .yoi4xh, s7ytdb*q charges?

  Is it possible to have a zero electric field iyl7) at d :pi(;vtsj9rw)j/ lvalue between two positive charges along the line joi a9)wl)il;t 7:/jrs(iyj tvpdning the two charges?

  Electric field lines near d2wu+0 xqxy 1fpsitive point charges

  The electric field shv+ pkbu08nf t/own

  Can electric field lines intersect in free 7+hho.a 8cfoltzh76tl.ub +o space?

  A solid block of metal in electrostatic equilibrium is placed in aoemtwk8pdqr6 d1snu+(d6 z9u8qz-) f uniform electric field. Give a statement concerning the electric field in the block's interio6qd1t-esdkw9f z 6d88rn)(z+u u pmqo r.

  If a solid metal sphere and a hollow metal sphere ofaerfa l:y-8 * yp,w7ks equal diameters are each given the same charge, the electric fiel* y-s:ekf7wr a8ypl,ad (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regibe zy:a g62q;oon where a uniform electric field is 2;6bg:oeq ayz directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ele8 3f epthfm)k 60;ysgd 8a6spz-fw pj0ctric charge

  A positive point charge ir0 d 1nffzp7*ks enclosed in a hollow metallic sphere that is grounded. As compared to the cdr * n1pfk07fzase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in satw831 rpqnv 4 +u.dumd),tistatic equilibrium.

State Gauss's law.

  The charge carried by one electron is es-; g-ls 0pzp$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2.00 mC. How many more 5 xzf/hdqrnutsq (zt9+)n 4j iw:s,.e protons than electro )duqs/(9 ,th5xt4:.frqji we nnsz+zns does this piece of plastic have?

  What is the charge on 1ttqvuhv6 47r5)dk )9kle,odnrq t)7o hp(f ;i kg of protons?

  An atomic nucleus has a chaf x.ohk.*4 mlirge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, h 7k;ea i(7qabtave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thak 77eiat b(q;e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bett1cgogw /fcpr3 k2g8 .ween them is 1.0 N. What is the magnitude of the second chargek 1/2 gggwc 3r.f8copt?

  Two 1.0-C charges have a force between them of 1.0 N. How ckw5pn1d k3u*ueh( (-rezn5 tfar apart are they?

  The force between a iu ./)im b910cpdbvv8f4co v j mbnp..$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ininhwyjy:qe 1 d3b :x;l2 v+kt7xtially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new seplxyhj:yew x1k+ b;vd3:7 2n qtaration of 8.0 cm, what is the electric force between them?

  Three identical poinruibnwvb.+let8 pm)u0 is (+/dz. b0at charges of 2.0 mC are placed on the x-axis. The first chargtiup+ l8bi vbw+sr0/(de0m.z .ba )nue is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC p1r d7p 4xh5n,gtdu qqs-- md4is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are rqxq u47ptd1s d-,p5h-dnm g4the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positiodaxe ,qv8n79lns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5e9a, n 8qvxl7d.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plni3 (olb 7any m.7blm-aced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -Q is placed amymb3ln7bil o(-.n7 at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (x rh d.t )t;r uolk(p/54nx7wl0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5t()l7otr.5wnhpdk l ;rxux/4 .0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -i;ber3))l4 yj.bkuaiunw x9kc 6g;(w1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o;x 6)w3 9kc4 l(biwu b rui)nayj;.kgef the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ct*5(bkg/2(jrozq twof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elez(tqb(t *cjk/ 2w r5goctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated wjhy86u ji9*oby 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would oihuj j98*w6y be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on,+msymta5xa-kt e+ 0w the x-axis can a third charge be placed so ,0xk yw5tsa+-t+ma emthe net force on it is zero?

  Charge +2q is placed at the origin and charge -qe 5h2j d3c0l x(wir;gt is placed at x = 2a. Where can a third positive charge +q be placed so that thecr5 e x(20;dlgtih 3wj force on it is zero?

  A copper penny has a d2oa ,s8vy xiq00za2l mass of 3.0 g. A total of $4.0 \times 10^{12} \; electrons$ are transferred from one neutral penny to another. If the electrostatic force of attraction between the pennies is equal to the weight of a penny, what is the separation between them?

  An electron is held up against the force of gravity by the attraction ofh0va :klj8g ay5/s6qr a fixed proton some distance above it. How far6h yark0/a gsvjq8 l5: above the electron is the proton?

  Two 0.20-g metal spheres are u6b-q *wymotmli2:1t hung from a common point by nonconducting threads which are 301mib :tmow6y2l tq *u- cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electofdm:hqd+ax7+ c)fd-: )nlmbmmp-g ,ric field at a distance of 1.0xdm+- :b ahg +f cpmfmn- dq:)d)ml,7o m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.w 7k8azh+v i; 0oks0gx50 m from a 50.0-nC ;hkv ko 0a8 07iwx+gszcharge?

  A 5.0-C charge is 10 m from a small test charge. What)f8,a zd6s dpo is the magnitude of the ea8s pfzdo, )6dlectric field at the location of the test charge?

  A 5.0-C charge is 10 m frdf ;-0hk2glcf om a small test charge. What is the direction of the elech g0df2cf ;-kltric field?

  A 5.0-C charge is 10 m from a small testc5 0tknc-sw*i charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargt -cnk50 *cwsie?

  Two point charges each have a 4 g ),x2j cawenpse3x48u3l nrvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at xse),32lruwa x3nnc4gep j8 4a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticz0i:ilg 3xw0l k and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieldg:l30iz lx wi0 at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick8 l85yyefl gn 0xcl((8dz*yh i and a -4.0 mC charge is placed at the 50 cm mark. At whyl x5ghy(l0lin(d y88c* z8fe at point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mmowin15 s-ex; C and -7.0 mC are placed at x = 0 and x = 0.20 m. What is mn 5iowsex1 -;the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squa-y+o -kix2 gcwre of side 0.50 m. The last corner is oyc-ki owxg +2-ccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges p-pvu7g/vc/+ m j4 cxdare placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric field at the square's center/c/dg +vm- vxc4pj7up?

  A force of 10 N acts on a charge of 5.0 mC when it id7xm/4(s ky. lq 58kc2rpf e9vhyt do(s placed in a uniform electric fiefk crxkps2y(e. o t/dh58lmdq(9vy 47ld. What is the magnitude of this electric field?

  A particle with a charge of 4071eq tcjmhop( i hdz.*msb7s:h6i +j.0 mC has a mass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an electric field of 6000 N/C poini y5t;w 6urb:xting downward. What charge must be placed on the ball foirbx5; w6y:tu r it to be suspended?

  A foam ball of mass ; tdjmuq4l+a:0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electrictm:dl ua+j4q ; field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitpc .1zhq+;u ;fsd x0sekf.nd3ude of the electric field 5.0 cm from thsk3d e.qdsn hf.z;+;cf p10 xue sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. rr+ku)y2ieecn 0/;jf What is the electric field 6.0 cm from the center of the kn0+ireyur;e jc f )2/sphere?