State the law of conservation of elej1) axiu,: 0crtd )ehtctric charge.

  Is it possible for two negative cha4 kdrwj 42 7bqc5xm9oyrges to attract each other?

  Is it possible for a positive and afydqqrt n;j f6 3t:c7+ negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tp *:07l: epymbqn i8vjhe glass rod acquires a positive ch:0b8py*vjpm l 7in :qearge and the silk

  A proton carries a

  The model of the atom svskz;p )/m8z8r r*omrk:;bu khv k5y, hows a

  A neutral atom always je ;0bf2y jvhai4cl: 3vc+.sjhas

  An atom has more electrons than pr5cz ;v-+lssg dotons. The atom is

  Materials in which the electrons are bound very tightly to the nucleqqnes6:ms m ;::v 3d ,o6glctvi are referrce ,gq3:l6 :6qm:omv dtss;vn ed to as

  Materials in which the els -adjb(s; vf3f zqh3+ectrons are bound very loosely to the nuclei and can move about freely within the material are ref;q+h3f(3s asvd z-jb ferred to as

  A negatively charged rod is brought near one end of aner+o+.o ec)9 zxb g6 zvqt8v4k uncharged metal bar. The end of the metal bar farthest from the charged rod will be vr.)9 e oqxtgbkoezc+8vz6 4+ charged

  Sphere A carries a net positive cnfw 10mgr9(af harge, and sphere B is neutral. They are placed near eachf1n9w ra 0mf(g 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 cn w1 h;wjl8(upharge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv ov1+;hxvn0n jely charged glass rod. The e0nx;nh1vvo j +lectroscope

  An originally neutral electroscope is grouh 4jh0cu ;,jttnded briefly while a positively charged glass rod is held near it. After the glass rod is removed, ct0uhj4hj ;t, the electroscope

  A positive object touches a neutral electroscope, and t,2u off;4 zuv70pm ybx1v h6r ,udlj5qhe leaves separate. Then a negative object is brought near the electroscope, but,fpr6 muu5hqflu,y17 b jdv2v ox4 0z; does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insula4qyi 5pr(ekx 0ted table. 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. W prey(5q0 i4kxhat is the final charge on each ball?

  Charge is

  What are the units of the Coulombw li(emt0jnh9;z(x ,g/ 9aiu r constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch c/+t 6suvj0srarge is larger in magnitude than the second charg sv06+/tscjure.

  Sphere A carries a net charge and sphere B is nk s8icre: k4.g7vls) eeutral. They are placed near each other on an insulated tkr. :7ce) sk84islveg able. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a c+ xb7qqgd;o (v top6ee05so (lertain force. If the charges on both objects are doubled with q7b5ogs0etvxde+oqp (6;l( ono change in separation, the force between them

  Two charges are separated by a distance d and exert mutukhcx0 hl (./c i8re0nyal attractive forces of F on each other. If thr/0ich.e 0l nykc(x8 he 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 happens to the for epqs5)cfb :: xfz3vr9w1.js31fzxh dce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its origicxr dxh51: ezffs) jv9p1 :s f.bw3z3qnal value? The force is now equal to

  An electron and a proton are sepaq-rqz 0szc niykt.06 5rated by a distance of 1.0 m. What happens to the magnitude of the force on the proton iqr y5zktc0 n.0z- i6sqf a second electron is placed next to the first electron?

  An electron and a proton are separated by a dist.8l quk p6y3vy m,gsx8ance of 1.0 m. What happens to the magnitude of the force on the first eq8p.skv,xl8 6gumy y3lectron if a second electron is placed next to the proton?

  An electron and a proton are separate6/ jhcb *ii+uhmqt13 gd by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m +q6ij3/ghcbi1mhu * tcloser to the proton?

  A point charge of +Q is placed at the center of a square. Wgg6xngmj zsc q-8bo /9 ru27z*hen a second point charge of -Q is placed at /2r9gjcuq z x*7bmg6zon-sg8one 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 net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q y:gmwrj3)hwnt *(/6eh27ickbmmrxzt *8 ;w eis placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forebi mw e2 *c/ 8rw;kwxm(hr7m *6nzthtjy3)g:ce of 4.0 N acts on it. What is the magnitude 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 is not a vect h elzt,8x8g8yor?

  At twice the distance from a point charge, the; qmk4b+m;u-lgc.se v8g4lw g strength of the electric field

  Is it possible to have a zero electric field value bfw5/8 bnhnhq(bfm )nq b(l)) between a negative and positive char/m b b)bbh)qh5nnnw(l8q (f f)ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two p8pu:noz u2s+kositive charges alongn2+u pz8:ousk the line joining the two charges?

  Electric field lines near psitive point chargefynzw1g j+vn2f 9(s9vzf.nfi1s wf28s

  The electric field sh.y06lp za9mz jh c+uf/own

  Can electric field lines intersect in freaetgf ;a6eh46e space?

  A solid block of metal in electrostatic equilibrium is placed in+gfet zk 9c(jq xn.e n6):m -1wbrojx+ a uniform electric field. Givece+ g+qf 1xm(9n .xk)6bwrejon: zt j- a statement concerning the electric field in the block's interior.

  If a solid metal spherl52q36 a u:y 4gxycz7ya ;xxore and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the c4q;gxx6la 3u :acryy 7xoy 52zenter and the surface is

  A cubic block of aluminum rests on a wooden table in +u::dri 3bj bna region where a uniform electric field is directed straight upward. What can be s:bnb+r iu3dj :aid concerning the charge on the block's top surface?

  If a conductor is in electroseq+z;9howu91,tp: mg*t eouf4.ueh static equilibrium near an electric charge

  A positive point chavmerme blr)8 i, m3 lgb69jowv)x: +i.rge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, erii x:e.9+v3 rwo, 6j)lm)mb8v lmgb the electric field at a point directly above the hollow sphere has

State three properties of cfqfb;gcynt/e1:e*- ronductors in static equilibrium.

State Gauss's law.

  The charge carried by one elecp;ndg zc)(9pujyu*7p tron is $e = -1.6 \times 10^{-19} \; C$. 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 pa(8m1u:dfv6o1*g rjs(1 1geax oimocrotons than electrons does this piece of plastic hacdoug6 av1r ji:f11xsog(om e8* ma1(ve?

  What is the charge on 64epscuv2/hh 1 kg of protons?

  An atomic nucleus has atf /pb52qpm.33q jenj99h gg j charge 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,/3t9i / lb.jvc5 orijo have charge values of 2.0 and -4.0 mC, respectively.. lv/tb jrji 5oi93co/ What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and th hj69.yvw:p-wqm 4eci ;/0lebjijl 0 we force between them is 1.0 N. Wlw-0:0pb iwl4 v9e/qw ej; .hyj 6ijmchat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of -df;-7k i jaxk1.0 N. How far apart are they?

  The force between a p) sl8b k*1z: ,mlehu6xjiyt-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially fr+(tjl. 0 0e mm+ 7qm:5khomv gks3bg2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between thef +7o5j.e+tb(k mg 3qvlk:hsrmmm 00gm?

  Three identical point charges of 2.0 mC are placed on the x-axis. e5ho-ee au (r9The first charge 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 tu e5o (eher9-ahe 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 is ii+g0z/2d;ojoz 9rwaplaced at the origin, -2.0 m C to the right at x = 50 cm, and +4.02+ir za;ojdwi9 /gz o0 mC 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 located at the following positions: Q1 = 2.00 mC at mgzq;vczx74)jed 1(: biya l:-hnk/s-p+q dt x = 1.00 m; Q2 = 3.00 mC at x dv-7eslzbh /jq4 :-x iaq;m1)n gc+( tkz:dyp= 0; Q3 = -5.00 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 p-ev:fy.i7m7 kf/q1v q1s vdj qlaced 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-7 s7d1 qvkf v1q:/y jvieqfm. the center charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at :m5m 6.ksxez*m1zbdr807s za; s wfyo (0, 0). What is .*smk61zmbmd fas80xye w7zzors5:;the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m.a)qnygt b/m:kz t;w9* 9pt gn, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the);qn99n:gptg z.yb* k w tat/m direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofbx4 dvcvbv :)gm7z;m4 an equilateral triangle which m:bv44 mc7;g)zvbvd x measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.v3q adk v u/h-mj+op5;0 m. At what point, on a a3qhpv5+vujok-/ d m;line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where ie* b8w v;koe;h lsp87on the x-axis can a third chvwi78;;8obh e e*lpksarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where/d o9qyn2o km ,(uz5kifpa j4, can a third positive chak of/o 2j49uiqp a,dy( n,mzk5rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total v*6ue1b2ra i8-th 6vcp9cm q pof $4.0 \times 10^{12} \; electrons$ 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 gravity9i+ hh9z3kaxk by the attraction of a fixed proton some distance above it. How far above the electron is the przh3kkxi+h a9 9oton?

  Two 0.20-g metal spheres are hung from a common point by boc 03 n7lajc cv0*k3anonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threacn0ca 337a*v ol cjbk0ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What i1c;;ze ecm uy cbgt4t-wk4p,2 s the magnitude of the electric field at a distanccpkb 1 4 ctwce-mu;2zg4,;tyee of 1.0 m from the nucleus?

  What are the magnitude and direction o fy:ynlwgc 8np; m;ri 3+o65maf the electric field at a distance of 1.50 m from a 3gimrm;wcn6+ f ayly ; np:85o50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wuk2 i/h o(ozoc6,4bdbhat is the magnitude of the electric field at the location of the test b / obuhid6(4ko2, czocharge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of pu jn7h(g*n4athe electric hun* anp4(7jgfield?

  A 5.0-C charge is 10 ) ));ksxj; uri bij6vam from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge plurs vkij ));aijx);6 baced at the location of the test charge?

  Two point charges each m2q*z-. qycuo24 sguvhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fi*4-u2us z.cyqqm2 vogeld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 qcbs d914k5dnmC charge is placed at the 50 cd4sck5d 1bqn 9m mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is p-+mz(kfrbh:m laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm-(:rbmfmh + zk mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed a0snx6bx i+o 92brj so-t x = 0 and x = 0.20 m. What is the 2irs +0on sbobxj-96xmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of t 3bgtur.l8s k sb;h00a square of side 0.50 m. The last corner is occupied by a -3.0rus0kg0tb;lbths 3 .8 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners odbq7hvya t :zh spbr175misw((f722bqp0l n 4 f 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 thervtnl7yh0aq:2isb7z ( bspdwh527m (4p 1q bf electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electffz5x 7z;( y6lonx y0kric fie5ofxz 076fyy n;(zl kxld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ht;nzyd )ba.v4 as 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 poiwxh5(, pkjtpswu1 x ,*nting downward. What charge must be plac,px jwxsu 1 ,tkwph*5(ed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chw a(dxofp56p4arge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric p6pod 5a4x(wffield?

  A metal sphere of radiu6;:.mhlziymd s 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'sdl6y h:zm;.mi surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elec ic2 10fx p/ mextv5)etal5tq/tric field 6.0 cm f itx5e p2t/te)/a 0cv1mql5fx rom the center of the sphere?