State the law of conservation of eled,how *n3yoz+ b 8,l w0)qpeblctric charge.

  Is it possible for two negative charges to attract scfhh+4eyph ;:hk/ c:each other?

  Is it possible for a positive and a ndh60g ir mdo)5egative charge to attract each other?

  A glass rod is rubbed with a piece of 8 y-n. x)drxljvx,:d zsilk. During the process the glass rod acquirexxy.vzrxld-nj d8 ,:)s a positive charge and the silk

  A proton carries a

  The model of the atom showse9rxft3e6 (irf j9cwc9jr zbo a3i668 a

  A neutral atom alwayxb7r.,eo .an- ar-bdps has

  An atom has more electrons than pr5 rbyn6y+q 6 *ijy2ebaotons. The atom is

  Materials in which the electrons are bound vegho w;n 8crb 8kld 3hyp5f;n/)ry tightly to the nuclei are referred to ly8)rk 5f;bh3nno;wgd c p8 /has

  Materials in which th by;spl f*tmkk2 ;* i,s8lc) r;vi-vnue electrons are bound very loosely to the nuclei and can move about freely within the material are referred to a*v, srl;*;ms2u n;8pib k ckyv)ti-fls

  A negatively charged rod: ur3blez6++8l kyvsv is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged3vl:yb kr zl su8v+e+6

  Sphere A carries a net7l-b jh)xr g-z positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sjg-r z-)lhb x7phere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chav j,c5x pcp.-elj15zhrge an electroscope positively?

  An originally neutral x ga atyw-) vb,oe)emo) )2r3sm6iz3welectroscope is briefly touched with a positively charged glass rod. The electros6a )3ooeiz3yx2mw rv)a-b, )wt )egm scope

  An originally neutral electroscope is grounded briefly while a y r*7,.uk(wc9 ibhpvfpositively charged glass rod is ,r(h f bp7c9. ywuv*kiheld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral 9q ao )of/jqb8electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touchjofob a8q/ 9q) it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. rl lpea+k (d4no*31 tb 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 fl3 td+ (leparb1 4o*knirst 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 consta9l8:d 2m4klxx kx +cg-ladb :pnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distf1 )ciluo +tq1ance d. The first charge is larger in magnit11uif oc)q tl+ude than the second charge.

  Sphere A carries a net charge and sphere B it/9x/*ttc5 wl(mzyeo- qcu9p f6h qt rb5t-2xs neutral. They are placed near each other on an insulated table. Which statement best des-qhyq6xce 9lz b(cttwo /5xum* tf5-2 rp t9/tcribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch5dpgxin9 f3g7arges on both objects are doubled with no change in separation, the force between 93x pgnd f75githem

  Two charges are separated by a di wq9f) i7 tvp:h0*qmsqstance d and exert mutual attractive forces of F of tv9 )m0i qh7*p:qsqwn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with9aqc 2ts-2+) ldgwhifk)4 jst a force 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 origiq k)4ws2+i- hl jat f2)d9stgcnal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens tyn8 ask)d0* md 7k f8ibvzh+j(o the magnitude of the force on the proton if a second electron is placed nei(*f0d hyv8dj8)knb +sazmk7 xt to the first electron?

  An electron and a proton are separated bd4i:x, kxepfwzmgg 2x/,lb;i(wto4 6y a distance of 1.0 m. What happens to the magnitude of the force on the e ,gi(lpo zgm2 xxb, f;kw 4i6:dxw/4tfirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What cg(pa)qa2 d(c.w :rry happens to the size of the force on the proton if the electron is moved 0.50 m closer torapd .wr(:yc ()gcqa 2 the proton?

  A point charge of +Q is placed at fb60gtm xqul* /z(9;z5zrj o ithe center of a 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 ot 9zrxb *zi50gj;6zoqluf /( mther 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 the centroid , n41yvjjqbn43p mg3az;p(k gof an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrospbz(3,gj m y;jna13p4 vkqgn4tatic 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 n;lf207h5pfik2w k oo lot a vector?

  At twice the distance from a point charge, the stva 7 cxx3+zta(txyb4. z yr8u+rength of the electric field

  Is it possible to have l 5aiw 8xuokazd(15(ua zero electric field value between a negative and positive charge a1ko au(5ad8x iwzl5u(long the line joining the two charges?

  Is it possible to have a zero electric field value between twzz48y:jstfk-n sfoq s9mx+9a ddt3iy::+ ;wjo positive charges along the line joiningsdyj4f3 :-f kys+td:ai:zzwts;m 8 9q 9xj+on the two charges?

  Electric field lines neq,e q n *zq6f8(amck4far psitive point charges

  The electric field sho6n5f0y 1nuiu zgw6 0xc83qlbo wn

  Can electric field lines intersect in ye (8n1yy 5)mda6ikg vfree space?

  A solid block of metal in electrostatic equilibrium is placedxhi8:v3diwub/zb) 5.ecrv .p* a wtc 1 in a uniform electric field. Give a statement concerning the electric field in the block's inteub:vc 5w etwi.8pcbrai).3dh/zxv1* rior.

  If a solid metal sphere and a hu-kkrpe 60y2u ollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betwkk-p26uru e y0een the center and the surface is

  A cubic block of aluminum rests on a wooden table in a retazlb(q4 475wofr rt s7vf q6,gion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's tq4btrr6q ,(ff a75otsw7vlz4 op surface?

  If a conductor is in electrostod +gd:;*er9 ozf 6psd g h+p;wj0z/nfatic equilibrium near an electric charge

  A positive point charge is enclosed io 370gtp:qn rq2q1 jqu6mjs q8n a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the ele:jq16q 23ugs8q07o mptj nq rqctric field at a point directly above the hollow sphere has

State three properties of condu zb* udjv34vxu70t29o gswoc(ctors in static equilibrium.

State Gauss's law.

  The charge carried by onh cgl z(ov8 27zpdk*i-e electron 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 o lwh,qs2fa3 2 tv,*9ogqvvf6mC. How many more protons than electrons d 9v*gvo a l3vf fsq,2to2,w6qhoes this piece of plastic have?

  What is the charge on 1 kg qr5ds,6w 3t6 chyhs 5dof protons?

  An atomic nucleus has a charggwl-23i hwoogv zzu(*(p uw +w-+z(vae 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 mz8xaj t5bs06,fxl j1s 1h p( or*n:tkgC, resp(p sba j0ott6*rl: f1x8j shx1zg ,n5kectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m ogdj0m6o + gf3c;7lgifrom a second charge, and the force between them is 1.0 N. What is ofg 3 o6c0ij+l 7g;dmgthe magnitude of the second charge?

  Two 1.0-C charges have a force bl4 he7lybb0n4ivs;4//0l rdvp m k ,tketween them of 1.0 N. How far apart are they?

  The force between a k qf rqbc(b , chu 16tklc.8)3mi67skq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparts ,ty:ccf1y9a3+rgon , experience a 1.0-N force. If they are moved to a new separatiysny+c oa1 c93 gr,t:fon of 8.0 cm, what is the electric force between them?

  Three identical point charges o5yv drhjvpcks rx.o c.;+8:,a f 2.0 mC are placed 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 of the electrosta.cjapdv+5ok ,: y8 vr.h xcsr;tic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. Aeju7 h .v0rsqm v(f8a2 charge of +2.0 mC is placed at the origin, -2.0 m C to the right s8j(0hq.7rm 2 vauefvat x = 50 cm, and +4.0 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-bc;amv -0builacj8b 00bv 4d the following positions: 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. Whatac0bc4dj;v u0b i8v--blm0 a b is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the ci0doc2 uppk0(gveem aj8/8s 1c, f)or enter of a square, and a second point char/,cjpmod 810pi)ea(usfo2 ge0rc k 8vge 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0fu)x09r85kkh7jkx e/jo;zm o, 0.10 m); Q3 = 5.0 nC is at (0x ko5jz;0f hmx8ker kj9 )7uo/, 0). What is the magnitude 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);ncd3j6 /r*)xc3qcbfwnml w/: Q3 = 5.0 nC is at (0, 0). What is the direction of the net forc w6j m/bx3*c )3dfqln:rccnw/e on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vew1mq 2ueb 7d/grtices of an equilateral triangle which measures 30 cm on a side. What is the magnitwgq7e /12mb duude 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 5 cagk )x 8a:lb0mrk+5g3t li+tj 0gtiwhat point, on a line between the two charges, would it b:8 rt iactjm5lxatgki ++k0 gl3b50)ge 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. Whex lvjorz1vr6a; 0 l:e3re on the x-axis can a third charge be placed so the net force on it jvrlav;:x e 1o0rlz 36is zero?

  Charge +2q is placed at the origin and .s*efxie1g n1 yl.+5j 3 zdjkvcharge -q is placed at x = 2a. Where can a third posi1f1dv3.. 5 njz+i* segjkelyx tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total :yjfuh pg 0lns74fzc444nv)x 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 byonenj -0 2akc, the attraction of a fixed proton some diste a-,joc0 knn2ance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a e/or;xm b.iv,j kt ;hsx:,7qlvci 1j :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 ,.li;i/vce kr :vt b jms7o, :;jxxqh1between 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 electm,cmm(vnqe a :wc5 87nric field at a distance of 1.0 m from the nucla(mncwqn ve:8mm75c ,eus?

  What are the magnitude and direction of the electric f6 dueu8.a 79rhpqa ck37psi-lield at a distance of 1.50 m from a 50 l.pk89a3qe7u7 r -iuhc 6dasp.0-nC charge?

  A 5.0-C charge is 10 m from a smk; kznq;-sp n.all test charge. What is the magnitude of the electric f. pz;ksnq;k-nield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct5bj- xtq s5(c 0t(boki:yigm9mw9 2ap ion of the electrija9-ogx0bitmi(y 95s kmb5(pctq : w 2c field?

  A 5.0-C charge is 10 m-yy-pkl h:n7w from a small test charge. What is the magnitude of the force experienced by a 1.0 nC w :-ykhyn-7lp charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are sed qe+lm cq0rq1xc+nt d2. ,2brparated by a distance of 4.0 m. What is the electricr02rqbme,tl1xc q.q++ 2 dn dc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mk mz3)dnb;jfjhn,4 bb 9:9i rnark of a meter stick and a -4.0 mC charge is placed at tmr4h;:bnzd9n 3 9b,jnfbik) jhe 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 ael )ir6+( km0tme0qla -4.0 mC charge is placed at the 50 cm mark. Atl6i(mlm r) q0tea 0e+k what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC78+ rtcnb3a sa and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mi8tsar+na c 3b7dway between them?

  Three 3.0 mC charges are at the three corners 9: vs 5uk1e kv+:+lexlxtce r,xi:m t,of a square of side 0.50 m. The last corner is occupied by a -3.0 mC 9xe :veukemsi:vct1:l x,+xtr,+k 5l 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 )b -*zgfzufz( of the square as follows: zff-u* z(zbg) +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?

  A force of 10 N acts on a charge of r z*+ukxg 35y9if.ssx 5.0 mC when it is placed in a uniform electric field. What is the *9ix k5us3x+ .ygrfszmagnitude of this electric field?

  A particle with a charge of 4.0 * tfwtk (l0c4isa0fy+2f frp/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.(c mju gec3;x.* bscm electric field of 6000 N/C pointing downward. What charge must be placed on the *(gjumcm ;sc. xceb3.ball for it to be suspended?

  A foam ball of mass 0.1)y 9us kg;8msjszzr)350 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force9uzsz sg3;y s)) rmjk8 of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a cha/3mxq:tit.yiww08br arz +;wu/fg t+ rge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfatftw qxa/rry;. 3i w8i/:+ tbzu+ g0mwce?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electri6p r ekfq6h*w7-ol v6nc field 6.0 cm from hroep6fw- lq*7v 66nkthe center of the sphere?