State the law of conservation of elec2a7//x*u -kp64pz b reftc.mm upw tp6tric charge.

  Is it possible for two negative charges to attract el 42t085 aaej,xiy e:btrvoi 5ach other?

  Is it possible for acrrr0c , .e/ff positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gl8yv7xgv qf8 4pf8r.mt ass rod acquires a pos7qtr48 f.vvfym 8p8 xgitive charge and the silk

  A proton carries a

  The model of the atom sh,h) 4f qmrz,.bx96 m5majoflaows a

  A neutral atom alway7brw1ro 5x-1quwj;j o s has

  An atom has more electrons than protons. The atom inb7or:9k 0jvm(l+rtaz +,rtss

  Materials in which the electrons are bound very tightly to t)ckbmqz 2d 9d5 0olu. /6unsfmhe nuclei are referred tobmdfq5os zl)/nc6u2m0 dk9. u as

  Materials in which the electrons are bound very loosely to the nuclei 4 6fwwazlj4o5 and can move abf5az 4jlwo4 6wout freely within the material are referred to as

  A negatively charged rod is brought near one endov t a(bh 7us3yj)l,3g of an uncharged metal bar. The end of the metal bar farthest from the charged r3alj tg73, )o buv(hsyod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plaz.+odjwt m60 z; ehr8pced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sz e8pr m0hjtz;w.6d+otatement is correct?

  How can a negatively charged roded63,5g-b*h;nhhpepqahm054m jehp 7 kqw 7 f charge an electroscope positively?

  An originally neutral2, ln,8 pzgqom electroscope is briefly touched with a positively charged glass rod. The elect8 o2l,nqg, pzmroscope

  An originally neutral electroscope is grounded brieflyxh2thg;1 i vw0hm j es0k:ba1* while a positively charged glass rod is held near it. After the glass rod is removed,shv g kxh0et1wi1b; :0a m*hj2 the electroscope

  A positive object touches a neutral el0;b vs*i93 o gfyk,favectroscope, and the leaves separate. Then a negative object is brought near the ele fvv;os0b*gfa,k39 y ictroscope, but does not touch it. What happens to the leaves?

  A large negatively chargf ti4t d*1gsh5xq: n8bed object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before isd 5*b4t1xi8n qtg hf:t 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant 9k40hu rkwc)ynp7t6 l$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg- psz 6.qmsrs6e is larger in magnitude than themss r- 6pq6.zs second charge.

  Sphere A carries a net charge and sphere B is neutral. Th7e+5gwjx -e qrey are placed near each other on an insulated table. Which statement best describes theegwr-e5 j7+ xq electrostatic force between them?

  Two charged objects attract each other with a certaz9wz.xb0 m s2q:lzh i8in force. If the charges on both objects are doubled with no change in sx2.:z80 z9lhqbmzw iseparation, the force between them

  Two charges are separated by a distance d and exert mutual attract.x, xwo;sxl+ r9v2 +bdyvl v-yive forces of F on each other. If the charges are separated by a distance of d/3, what are the n v +xs,xdy .;+wvl9-xbyvrlo2ew mutual forces?

  Two charged objects attract each otherj6lc3ap dphdp2 4 mb46 with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separatioddch423p 64a 6lb pmjpn distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separa bc.2c. gfl+zlted by a distance of 1.0 m. What happens to the magnitude o +fc.bz cgl.2lf 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 ff4v+2svy8 qnof 1.0 m. What happens to the magnitude of the force on the first e8fyq+2f vs4 nvlectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dixgmyray:n qv)((4oa sxo.h44 stance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to tax)x r(y4 syh(m.qvn 4oo ga:4he proton?

  A point charge of +Q is placed at the center of avzenoa9.2)xz: rzc/j ueuvj7rj43 p 1 square. When a second point charge 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 net electrostazu nej zj2x7ze :3oua4/p. )vcr1jrv9tic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed atwbk+9w b4h57ikvjr4a0e7 t p u the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's verub45we+9ab 7vw ir thpj7k k40tices, an electrostatic force 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 isti sy* aq35+po not a vector?

  At twice the distance from a point charge,hh.e w.; 6whda the strength of the electric field

  Is it possible to have a zero electric f2 +bxc8gyh/h/t8*vbbr pv n8 dield value between a negative and positive charge along the line joining th28yndcg*bhbrb/ v8 vx+ tp/8he two charges?

  Is it possible to have a zero electric field value between two pb lk; +9mgj3ktositive charges along the line joining the39mt lk jbk+;g two charges?

  Electric field lines near psitive* d4bta5 * 1ehqrfi5auo* f-ysogn9 7c point charges

  The electric field shownk6s;cq2xt -yb 3 ovcm:i 9r9t9cti.ut

  Can electric field lines intersect in free spaceq+40km f lc;fq**qyhy 9h(od t?

  A solid block of metu;+grha:p ws( al in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fiel g+awp :r(u;hsd in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea ei2wmhj:wmzuz*h8 r-vns 5j 205c4ahch given the same charge, the electric field (E) midway between the center and the surface is ha mi0*n4wh2w sj-5ev j2hmcr:u z8z5

  A cubic block of aluminum resto6o9x+v(jfytwugbc/k 8: 4a (ght 7yus on a wooden table in a region where a uniform electric field is directed gy c6x8k( j:v /uyou g9t4otw7f bh(a+straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric 9(r)+i aghi3 tsb56rpb*rg dncharge

  A positive point charge is enclose5 .8dpox: pb)ac+bx sgd in a hollow metallic sphere that is grounded. As compared to the case wicpa.s p8:ob)+b 5 xxgdthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stati10;sz p1vuzv o/tt7auc equilibrium.

State Gauss's law.

  The charge carried by one e ;wepa ,49 lr)w8lfiffijnt;usrv8:+ lectron 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 bshojgrh0+j 3s6 *u2re sdk8;net charge of +2.00 mC. How many more protons than electrons does this piece 28es;+uhj6 sjsok 0b3 h*grrdof plastic have?

  What is the charge on 1 kg of prot57dzbsgcq (4rm 8ash*ons?

  An atomic nucleus has a chargb8+mv. xjw-g m*esmz2e 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, have charge values of 2.0 and -4.0 mC7-8c e 9s+xpz6xjcvgg , respectiv -ze78xj96gxscpgv+c ely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secon 4l,be*jmrzgn: u3(asd charge, and the force between them is 1.0 N. What is the magnitueas*j r bl(n3,zg4: umde of the second charge?

  Two 1.0-C charges have a force between then0x1v ei hd2 bg .1jd 9sf)fxs4ibqi5(m of 1.0 N. How far apart are they?

  The force between a t8uqw:+p2uh c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia7js: m l4ojv4elly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separationmo4lv je: s74j of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 dg+hruln0nj.ce4+oe hq9 0 h:mC are placed on the x-axis. The first charge is at the origin,u o :4hlhr0q.hc9nn+e0e + djg 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-axiko0 ubqne .rc;9t rj24s. A charge of +2.0 mC is 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 the magnitude and direction of the electrostatic force whjurt0c9qkrb4.n e;o 2ich acts on the charge at the origin?

  Three point charges are located at the following positioj.far;f9sbnk*ai5 x 5ns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnits *jaif 9x;r n.fkba55ude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, ad+3p g 48 ip znm9r-+1ahnubctnd 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 a-n1c3+t 4g 9abhn8 zid +mprupt the center. What is the magnitude of the force that acts on 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 d;ks e f8am;h-is at (0, 0). What is the magnitu e8-;kmf;sahd de of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 njo/ /poezlcq g1o)9;.wt4yc3x.pt p= 5.0 nC is at (0, 0). What is the direction of o;x4el3c/9qt g)yoc./zpnj 1po p t. wthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 m/s 6ghqd a(j ,*7u3ija,mfbzxC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elec,h*j dm j3gau( /f7ixqa,s6b ztrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separm9(pwtcw c 67k1jiyn7 ated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q 7 kyctw i(7w9cm1pjn6 such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-e9hi fu8ubh r9tc,39pC charge is at x = 4.0 m. Where on the x-axis canec8f9 b uht 39,rp9hiu a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q*4 ow 5tu,bkbl is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zb ko,t4lw*b5uero?

  A copper penny has a mass of 3.0 g. A tjw*h5)/oj 8*jnft7nej mp *aay 9vcm2y5mh, u otal 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 tctbqddu5 6:u x8ad 0xpu(t5r (he attraction of a fixed proton some distance above it. How far above the electron is thxx c(u560:tt8u5da d(drbqp ue proton?

  Two 0.20-g metal spheres are hung from a common point by noncood 59g-jk3*gl 1dez8u 6oj cygnducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angg5ed9o3ugk8jjgd6ol cy1- z *le between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wht) 0q8zlpa0szxm :h0:lcvr6l at is the magnitude of the electric field at a distance of 1.0 0p :0xlltqm0sc l rh:zvz a)68m from the nucleus?

  What are the magnitude and direction of the electrice4v7.6slqo ed field at a distance of 1.50 m from6evl7qde4 s.o a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude os5bf+pu; lu8j* /vd2ilw(phead y)q/f the electric field at the location o w)*/ep5/ulsdiaj( pdfb8;y+hv qu2lf the test charge?

  A 5.0-C charge is 10 m from a small testx(qavni0gh vk h2s 057 charge. What is the direction of the electric fqs2( hgvah0k0i x n5v7ield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the86thlms a q7jr1. olo( force experienced by a 1.0 nC charge placed at the location of the test cotj los(61m.8l a7rhq harge?

  Two point charges each have a value of 3.0 C and aogz( ;js+9b qjiidh )-re separated by a distance of 4.j 9b ig;dqsjio-(zh )+0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark dfp iv,ij ldqnz ,9xy1*z,9e 0of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el,j01z q ,ldpf x9ny*zd, iv9eiectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0(sj 5awsg sqvs 0124ci mC charge is placed at the 50 cm mark. At what point o1vg4ss0c 5i saw(sj2 qn a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2w+a tsi4vz w)w*c;( ls0 m. What is the magni iw wc4s z)*+vs;(twlatude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a pweu ;k)od.rghh0w e/r47 d*kbbn6v/ square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleorerk*4g;d/.d h kw/0phb )b 7uw nev6ctric field at the center of the square.

  Consider a square whia.ja (s(ly37g; 5zfwkfi5 whbch is 1.0 m on a side. Charges are 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). 5laazsi( f5.wywj7hb3; kf(g What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge szbs.10bw 1 ihy8cwkq2n gzj)8 m d)(rof 5.0 mC when it is placed in a uniform electric field. Wz.)wk1smcbjh1dw q8 b0rizs (8y2)ng hat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mailm7m64 aan. uss 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 vb;(v izk2c-mplaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspende;iz(v 2cvbm-kd?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is2-n h6- sv5h xfh 95tokw:xi94pfsthh placed insipi 5knshhwx9v2h o: t-hs t465 ffx9h-de a uniform electric 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 thek)o)*v pn),dm -mljzv magnitude of the electric fiev),vo * -zpm))kn djmlld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.r pre2 2-e n4kjmd/pe:0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of p- kej24e/:dprnr2 em the sphere?