State the law of conservation of electa i2+ 3ppq6zik zn(zf5)zi /vxric charge.

  Is it possible for two n zmm *,:bbl -rghfeu ./e;yt(cegative charges to attract each other?

  Is it possible for a posit+s5/p xyxw9 lsive and a negative charge to attract each other?

  A glass rod is rubbed wm9 m 3+ruw yam++.umoxujoc62m 0y g0uith a piece of silk. During the process the glass rod acquires a positivc+w6j+09xa+mouy r 2mgu.0 mo uy3umme charge and the silk

  A proton carries a

  The model of the atom sh1t zgt; j pm,)4dr;dftows a

  A neutral atom always sh1,ae/ac8 jzhas

  An atom has more electrons than protons. The atosn:a k ooxq:c q7 f8c(4u0d:wc6i8vcym is

  Materials in which the electrons are bound very tightly to the nucleim +p9d,zf vzf: are referred to am+fzvzd 9p,f:s

  Materials in which the electrons are bound va,wt2mxukkdj* *f) 0nery loosely to the nuclei and can move about freely within th*),da2xm k j*u0 fwnkte material are referred to as

  A negatively charged rod is brouglk 0*ng.vy h khv8dj(xz u5*c(ht near one end of an uncharged metal bar. The end of the mehl5vy(*nk. z*x( j0uhgd8 kv ctal bar farthest from the charged rod will be charged

  Sphere A carries a net positive c4w;hiut9z n8 -go:lsyharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brieflt: ygnz ;i-94 wsoul8hy touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope lc88 v;cvyix0 rie0o7 positively?

  An originally neutral electroscope is briefly3wq2 4yy *p3hynieo2t touched with a positively charged glass 3nh3wt2qyp y4i2yo* e rod. The electroscope

  An originally neutragjo o)2obpah i4:l-d ri7bo37l electroscope is grounded briefly while a positively charged glass rod is held near it. Ao7- bgl2b)rj 7p di oaio:o43hfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separator)if- vnl1l(06 fba ue. Then a negative object is brought near the elec1ol b(l6avui)0rf f-ntroscope, but does not touch it. What happens to the leaves?

  A large negatively ch/bgz4yk* ) jjxsyrj7avn27d e ) dp;u6arged object is placed on 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 time does either baljx /sazj2 ;y)krdybdjn) v7 64uep*g7l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couloml* ,fzrw :i-6wryfh4q b constant $k$, which appears in Coulomb's law?

  Two charged objects u-+opnl:e 6 mqare separated by a distance d. The first charge is larger in magni+op neql:u -6mtude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are o 4ps98q;pnwr nowasn j(0.l am c*5r1placed near each other on an insulated table. Which statement best describes the electrostatic force betwew9wc. s(ps45poloaaq*;jnnrn8 1rm0 en them?

  Two charged objects attract each other with a certain force. If the charges on ymzi. .+vi53prs y ujkkb n034both objects are doubled with no change in separation, the force betwe3ikvjy3b+p4rk0 m.sn yzi 5 u.en them

  Two charges are separated by a x1lt i,m09c3byvlpb ,distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new m m vyixb1cp,btl9,3l0utual forces?

  Two charged objects attract each other with a fry1j gckcx0 6u x 4vc/13w*w-qtmc:1sgvsm 4 morce F. What happens to the force 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 original value? The force is now equal gw 4qumr:c*11ckcwmtsxc/6-v34 mgv j0x1 s yto

  An electron and a proton are i8m.g 7;kae s xx/nlvtjl -6;aseparated by a distance of 1.0 m. What happens to the magnitude of t/mllvk.gisa8 e6tx 7 -;;nx jahe 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 hagaosh i x fxi,6--a1eg48pmxd)+h21gh t*rmjppens to the magnitude of the force on the f*fgm 8x-oga hie1+tgjx2a1, hi-xr )p4shdm6irst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.n.;4a kx z2rnq0 m. What happens to the size of the force on then 24axrz knq;. 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 secondvksm6x qg5sza8xz t2+3gck2 ,lxt4j1 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 electrostatic force acting on the positive charge at the cenxltk 2 x cqvtsmz35+g16x8zgja,s2k4ter of the square?

  A point charge of +Q is placed at the centroid of anr;1w5,vcv7 s81ri om l+zdkbn equilateral triangle. When a second charge of +Q is placed at one of t 1w1srv8i,c ;bmklz7+5d o rnvhe triangle's vertices, 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 is nok2*4s7xq uetg t a vector?

  At twice the distance from a point charge, the strength of the electxn x/g ;:l/vpo :u6lusric field

  Is it possible to have a zero elqmw9ip 6(suolb7zw 1:ectric field value between a negative and positive charge along thelqbwo1 u6p (iw:sz 9m7 line joining the two charges?

  Is it possible to have a zero electric field value between two positive charge:h ja; gty4nzprm9y1 i*i,(ylj w3 8dgs along the line joining thj(l *:pz;yjdy4n,9g a13yi8m irtwhge two charges?

  Electric field lines necn:-w w4bndh c 2a)n;9v1lgsxar psitive point charges

  The electric field show4,kweunu06 y9pxbasd5ac ;)i n

  Can electric field lines interseqbp/h nq+oi*g rd4k819gvl -ekp:t d/ct in free space?

  A solid block of metal in d+:q v mjr-db)electrostatic equilibrium is placed in a uniform electric field. Give a statement con:q -dmjv)r+ dbcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metqq *85n iby,)md/l jlgal sphere of equal diameters are each given the same charge, the electric field (E) mi)/d jb ylq,ni qgl85m*dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table inql7hrg4odx6 25 y6eu5hv7b l x a region where a uniform electric field is directed straight upward. What can be said concerning the co 5x4d75x62l6vhyglrb7 uqheharge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ans2 d6 errb29.mnn)wd o electric charge

  A positive point charg bpqxykqi68j8t3(;l gvl8 wcbl*+hq.e is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has + bl . qbq;l8ix pkcvw(86tl3jy8*ghq

State three properties of conductors in st/hfvx c(max:- atic equilibrium.

State Gauss's law.

  The charge carried by one ele..c;0k e5 ky)spg )mowqfgxl:ctron 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 h bf8c u6uu80 *hdwq:4k5yqk9b we9rgoas a net charge of +2.00 mC. How many more protons than electrons does this hbrwuqde oy 9cu8wb594 6*gk8q:uf 0k piece of plastic have?

  What is the charge on 1 kg of protons knzl7(2bc6wv ?

  An atomic nucleus has a ltf*ok;j0n +i)jk4 ke 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, have charge values of 0 w)* qq-.25xb6r6 dtiqysbv2tppqs i2.0 and -4.0 mC, respectively. r tt 6y*qqd62spiwiqv52 .qxb -pb)0 sWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwe3l0lus2nudhklaeo (46;c pg ,en them is 1.0 N. What is the magnitude of the seconsg4 3kdua, pl (hloe nlc;0u62d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apasva9h,/vdb k-* gs j2jrt are they?

  The force between a c-6jh y)o7s;sw8g;n wvxbd*p $30 \; mC$ 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 sflht :dr m o*uk99 ohb,w:c7jtiq31,1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricq h9c, s:f:k9m lttui173o*worbh jd , force between them?

  Three identical point charges of 2.0 mC are plac+8k 7w( d/swljb ba0oced on the x-axis. The 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 o( a +7/wodj8ks0lcbbwf the electrostatic force which acts on the charge at the origin?

  Three point charges are pr/srxl p ;nle frj4h4,c4-(pflaced on the x-axis. 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 jrhn4ps4/xrclfp4l( ef-,r; 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 -tftomq 1qinz 2:7/-bknp -dlat x = 1.t2ki- qn1-bo-/ lfdp nm 7qzt:00 m; 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 squa0l8 hcdwv8 48 m)zm op09rvnsvre, 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 at the lower-left c49svwdo)pc 0rmzv 8v808ml nhorner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1eg/hd19pre,0m4,fcba 9m;ykfot r-k c6 n8kz.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at t,bdk9 fnz/kg64 y9 ,ph;m krrc0-ee18oacmf (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, hl/gm45)nfd o g 6pbb80); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o5l/gnh)6gmdpb8 4bfof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices nh.ov )gzluk*;s 5w+w9nx s,iof an equilateral triangle which measures 30 cm on a side. What 5n9kzl n)u;vis. ow*xs +,g whis 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 3.0 m. At wha -zjn opt:/g2it point, on a line between the two charges, would it be possible to place a charge/j p-in:oz g2t 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.wlr oo,u ja(t 2fm*4ips+1fro37h x*b Where on the x-axis can a third charge be placed so the net forc74i rj mpf*fw3t+2oh1r l*(obua o,x se on it is zero?

  Charge +2q is placed at the origin and cvstj w:8e, 5;vix6 /kem4);rnumuotnharge -q is placed at x = 2a. Where can a third positive charge +q be placed so thatj euknmxn) 4 v:/v,w;8;et uo6ritms5 the force on it is zero?

  A copper penny has a masef g/ j5e00sk2aqw8u qs 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 bmm j +,i1lgrg2t,ciq-y the attraction of a fixed pro, mcg2r,i-jqil1tm+g ton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by8we ,aw lujb+b*mp-s l0dlcpg 7kt42, nonconducting threads which are 30 cm long. Both are given identical cha apll-*swe7,+d8bl2 kgbcm 4pw0, jutrges, 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 mah xaqdz/ssl /36 -7n olh.ee,ngnitude of the electric field at a distance of 1.0 m from the nuclend/eosxen6s7a ,q-. 3 llz/hhus?

  What are the magnitude and directiem +:zgo3+je bw( fv(aon of the electric field at a distance of 1.50 m from a 50.0-weog3efa:z(m +v+b (jnC charge?

  A 5.0-C charge is 10 m from a sma as.n)jb rqb 04o18uhbll test charge. What is the magnitude of the electric f q h0j) ob8s1n4r.bubaield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatg+o69zwzn8fzfdu4 2 p is the direction of the electric fi+ffuzpznd6 zg 94w8o2eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fk)j :ux d1qer hug vxhos( /sp::38j8lorce experienced by a 1.0 nC charge pla us:rgq:e hj1x/v(h:k8x sl o)3p8djuced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of:p9b0kgu6kk5+ dxppt vlap47 4.0 m. What is the electric field at a pokp0p7gl 6d +uba54:p9kp xvtkint midway between the two charges?

  A 5.0-mC charge is placq /n8pf*yg y2ted at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. p8 t /yfgyq*2nWhat 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 mC c.4l rh xe8ynv;harge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric f8x;vlh4 ren y.ield zero?

  Two point charges of +3.0 mC and -7.0 mC as* ,db*ijsr dxj*2n-qf/n8u k re placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at * /-x2nsf*ki* unjd bjsr dq8,the point midway between them?

  Three 3.0 mC charges are at the three corrk(7:y9jh h yrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cenykh yrjr (7h:9ter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thi gftv , w*8;-zmd.qgre 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 ce;igdzwgrmf8*, vqt- .nter?

  A force of 10 N acts z+xvdn51e+;zw,pl9u4qj s 1 d bkj(gd on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of;zpwud+,9nkx4(1+bg1sqdvl5d j ejz this electric field?

  A particle with a charge of 4.0 mC has a mass (9dd(c;:i9umnt yok nof $5.0 \times 10^{-3} \; kg$. 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 6(ylo r 4tj6bbt xo;jqx nntct,7r-.12000 N/C pointing downward. What charge must be placed on the ball for it to be s 42xt t.r -t1j c7oyltq(xbn, njbo;r6uspended?

  A foam ball of mass 0.yd97kg rq-up5--xg6oj fxwevmv 0: n3150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the n6f : xeuwg7g--m yvqd3k -vor0pj5x9force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charg bq3,g ojkw4a2 r* 4of/rkv5lwu,mc/ ge of +2.0 mC. What is the magnitude of the electric field 5.04q/u, g wagc4jlk r2ov/ robk,*wf5m 3 cm from the sphere's surface?

  A metal sphere of radiua,y5om s8pg h.s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm frohp8ys am,g 5.om the center of the sphere?