State the law of conservation of electric chjiee in2g6v1:;lg8 r warge.

  Is it possible for two negative charges too sc9lxf0r7o i,rv )+n attract each other?

  Is it possible for a f*d4ugf z5kg6positive and a negative charge to attract each other?

  A glass rod is rubbed with a piecehdskudte9t4(ne 9 w0 go*7h h4 of silk. During the process the glass rod acquires a podt hus*4 9 g7dn9wh0toe4hk e(sitive charge and the silk

  A proton carries a

  The model of the atomuzt ynw:g qs(c1f9)kze -8xr;wvu 8 t/ shows a

  A neutral atom always hxb ibb*9jzl (thmi4sz lv46/ ,as

  An atom has more electrons than protons.( y96juv8cvcihwi u1yv8 pyg2cxx,/2 The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refer :ir/pm rb-isb842l nvrerv/m2l-8 i4sibn pr :bd to as

  Materials in which the electrons are bound very3+xm393zu3iex f;exzeoq 1x f loosely to the nuclei and can move about freely within the material are referred3 3+zxf 93qemxex 31eof x;izu to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thdh7:za* iij:nr(;hf m e end of the metal bar farthest from the chd(jahr mh7f: :*i;nzi arged rod will be charged

  Sphere A carries a net positive charge, abf9f , ks,ta6snd sphere B is neutral. They are placed near each other on an insulated table. Sphere B iss,f,bts9 af6k briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chf 6pljyin4 l o,1xp)w(w4p xe(arged rod charge an electroscope positively?

  An originally neutral electroscope is briefl8mwm6agtke4h 9pt* s2y touched with a positively charged glass9 mk2mp 6*8t4ga tsewh rod. The electroscope

  An originally neutral electrosco7jv9k7)v xj,dejy(t e pe is grounded briefly while a positively charged glass rod is held near it. After t ,et) jyexj9 77(vdvkjhe glass rod is removed, the electroscope

  A positive object touches a neutral electw5) c4*ac crrd*gi3.4h)vn qfxw 9h ldroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavesiqch w*r4hx.g c fw cld9n*45a)3)vr d?

  A large negatively charged object is placed on/zhmn 35 pf:vm an insulated 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 timemmn/z3v5hfp : does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 3,a ;7h swuid4 j6y(mx6nqolv constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chf + j1c jqru9s7e0t(sqpb9v(large is larger in magnituprtl 0s +1q fq(uv e(9jb9sj7cde than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ealcz ;g(bp p5f,ch other on f; cp 5,(lpgbzan insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Ife;nv3yqy w3j lg)* j6fsq.,5w z 3iqhn the charges on both objects are doubled with no change in )e6n3q35gwsfwnvi y.j3 l,jzyqh;q *separation, the force between them

  Two charges are sepaf) +/b g rdnn3inkk01trated by a distance d and exert mutual attractive forces of F on each other. If the c+3dkrkgn0n bft)in1/harges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcnb1g)-equ (y we F. What happens to the force between them if one charge is doubled, the other charge is tripled, and 1 n-bw u)q(yegthe separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of c gme mu9l53if)q,w(q 1.0 m. What happens to the magnitude of the force on the prm mquc(wif5 )q 3l,ge9oton if a second electron is placed next to the first electron?

  An electron and a proton are separa:hsr:fj3d r1 tted by a distance of 1.0 m. What happens to th:tdr srh 13jf:e magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.01*w 5jynvdo p0 m. What happens to the size of the force on the proton if the electron is moved 0.1wv *j nd0p5yo50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. tmya53sw j0 :e When a second point charge of -Q is placed at one of the square's corners, it is observed that an ele: 035syet mjawctrostatic 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 is placed at theddkpt4e lj 2z;*r9 .7xxup5e1pw lx:e centroid of 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 thd.ljxwep; * 2 zpxtped71l5:rxuk9e4 e 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 vector?*ts -g- 9bh5 mrpbvw. kssr1r7b6 6fyy

  At twice the distance from a point charge, the strength oyxrhh9bk* 6n /f the electric field

  Is it possible to have a zero electric field value between a negative and px /.ire(e cdzs uz9i8.ositive charge along the line joining the two chargesd8s uci.e.z r/z(ix9e?

  Is it possible to have a zero electric field value between two positive ch4( 4q-vs fvbhzarges along the lin- zv44hf (vbsqe joining the two charges?

  Electric field lines nea ky e4cefv00zn(coa98iod*x3r psitive point charges

  The electric field shown /bmgh gq7v:mf 7de:2 6/agurs

  Can electric field lines interyx y ,vbhd 5;qjtko2+0sect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e*b ,op+4k3zy kkebkh4 lectric field. Give a statement concerning the electric field in the blo p*e4ok3ybb +k4k,zkhck's interior.

  If a solid metal sphere and a hollow metal sphere of equal d/ y5j 2hewt2pyiameters are each given the same charge ywt jpe52y2h/, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regy1.t mkc* d44l:ttpr 5irtl*sion where a uniform electric field is directed straight upward. What r5ls t*:.tdrlmt*cp 44ki yt1can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric char .c1kc.xypq :pge

  A positive point charge is enclosed in a97: ekwl9amvn i l 6qwjzx xx;/nn2.)r hollow metallic sphere that is grounded. As compared to the case without the hollow sphx l) zemx;i2rn/9v9ql:ka6wjnn7x.were, the electric field at a point directly above the hollow sphere has

State three properties of conductorf;pi r29mm j;zqf+h6 ks in static equilibrium.

State Gauss's law.

  The charge carried by one elezq/z.:lc- t bw84vc otctron 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 protons thanfvj4:q3 : by)nswi1ma electrons does this piece o:q jay4)fnvm :1b 3wsif plastic have?

  What is the charge on 1 kg of prw;y2zdxi q.; hai/0d sotons?

  An atomic nucleus has 5: djsix4e2lia 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 22bmm:o /n;qm8l uexx.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thxl2; e mn/b:m oxuqm28e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweenc uzkn/ z zca,lc.sl)5egf6*+w6irq; them is 1.0 N. What is the magnitude orz,l.k zuc6/cg +ns;ec aqziwf)*l5 6 f the second charge?

  Two 1.0-C charges have a force between them of 4 ue;sw:p(gc)8yjrn8 d -wqcrpe6 tz:1.0 N. How far apart are they?

  The force between a -knt6qnhs)b6cg+ 7 lyvpd7 d+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N h0j jox/der c-bw;qa3js/w 9p-7+nmfforce. If they are moved to a new separation of 8.0 cm, what is the electric force betwe9;3jm wdnsj 0rfc7 -xob+whj-peaq //en them?

  Three identical point charges of 2.0 mC are placed on the pw:ch/yi(0x9p 8phtrt,xqo0x-axis. The first charge is at the (r8thhtp x ,ywq c/p9i0:0x oporigin, 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 chary /zotfs 0u:w/y(zv6cge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC/tovyw zuc: fs6zy0/( 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 /j*vd+ln mr7b+bv - aaat the following positions: Q1 = 2.00 mC at x = 1.00 m;brbv-*ana j +md7v+/ l Q2 = 3.00 mC at x = 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 placed at the center of a square, nox*7lox tb. hc,+nl;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 *x ,ch .;o7xobl+ ntnlof -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.04ibhl k6wgo0s u0 /;xd nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC csg0dl6 /04woi kxuh ;bharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nz8 +k ij0b4i/aqkh ;raC is atk +ia;j a0k8/rbih z4q (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ej8bug 0 / dkmy/)umuve/ (l;utw6t km*quilateral triangle which measures 30 cm on a side. What is the magnitude of u mmjtt e kwu6/ /)(lb *u8;dg/vuym0kthe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepj. vw lbwtbwt32 .ug( nv0i*p5arated by 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 wouv..ltu2w(b 3g0*5 bji wtwpnvld be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargel lvubg o786 g0:g*xjk0npfm9 is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force lf80n60x b:m g*gv9o7ju pkglon it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where s 9t 0q-0x3o-fenfqj2i) vjwqcan a third positive charge +q be placed so that the for fqo00-twej2-jf)vn3q ix 9sqce on it is zero?

  A copper penny has a mass of 3.0 gx :ydu1h3ooa6 di 0- vo;ft-jp3 jb7jw. 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 byf 3gabs d7tx+g) jj)q8 the attraction of a fixed proton some distance above it. How far abogj3+xg7bfd )tjq8a s)ve the electron is the proton?

  Two 0.20-g metal sph3/p-w+frr2.rxl9cg h/nl v xxeres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threa r +xx-nrx//wl.92p3cglv rhfds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude opm yd(nv-)i(6r s. 4 -;zx:bpk- apzqikkrq9n f the electric field ats zknqx9-(i :(y d-nbpv)iar6zpr k.k; 4pq-m a distance of 1.0 m from the nucleus?

  What are the magnitude a h ,x:b*)2pqyfcfg cq:nd direction of the electric field at a distance of 1.50 m from a 50 fqcpcf:x, :hq*y gb2).0-nC charge?

  A 5.0-C charge is 10 m from a small test charg; rugr ov 1d:o))kt1rwe. What is the magnitude of the electric field dgor 1ot) rv:u1r)wk;at the location of the test charge?

  A 5.0-C charge is 10 s,ya*1gmjcj0 m from a small test charge. What is the direction of the electric field?sg0yaj,* cj1m

  A 5.0-C charge is 10 m from a small tes(,si72hlh enyt charge. What is the magnitude of the force experienced by a 1.0 nC charge placed aty(ihs72hl ,e n the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by k) ( tm pkpk+tzz.e:;b qh9m/l fgng)d4xcq.2 a distance of 4.0 m. What is the electric field at a point midw. k xf/ 2hpbzp .gm:lm kqz;)c )d+gt9tn4(keqay between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofmpvt v g dn7+r4pis.(5 a meter stick and a -4.0 mC charge is pla.t(pr7m ivs 5gd+nvp4ced at the 50 cm mark. What is the electric 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 egxus.(:vthx*shat4vn 92 /hmC charge is placed at the 50 cm mark. At what point on a line joining the two charge4u. shntv/g:sxhh2* a9tev x( s is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are yt u6*ys0 5nx1cec(etplaced at x = 0 and x = 0.20 m. What is the magnitude of the elety5c0ute* 1cx e6(ysn ctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T+ jrhx 06ejswdcd,63k he last corner is occupied by a -3.0 mC charge. Find the electric field atcerwj js+6x6 h3kd, 0d the center of the square.

  Consider a square which is 1.0 m on a sidehiqi+ 33 n/ wv*6jm 59 ratr,ia-coe0b-ceofi. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 miic-j3 3, o95-wievreq* a /n+itocm 6hfr0abC 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?

  A force of 10 N acts on a charge of 5.0 mC when it is plalnnv. jdencxrj/h683x )ze *6ced in a uniform electric field. What is the magnitude of this electrr cex 8nh nz. )6d/e6vlj*n3xjic field?

  A particle with a charge of 4.0 mC cp 9, 0i sxldsuycp/04has 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 inqdfo u by3o*d5v(yvdymu4,6 5 an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b5 (yo5v 46 dfo3,mdbuuvdqy*y e suspended?

  A foam ball of mass 0.150lqg.wfphf8d1); zx z( ifi 5s/ g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of.sqgpld;fi) /fzi8fxhz1 ( w5 gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chh44h evgi c4r6arge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spherv44i6gc4hre he's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the enj 4f68yp.s sg3ji/ 9jgza pe*lectric field 6.0 cm from the center of 3zggp*spij/y 9ajs68 e njf4.the sphere?