State the law of conservation ofh4 5 *yjc1hcppd6( jgv electric charge.

  Is it possible for two negaz4a.pv 0uxk. ytive charges to attract each other?

  Is it possible for a positive and a negative charge tcs4gifrd/y96 m f/kd yi(m,-.ki5lda o attract each other?

  A glass rod is rubbed with a piece of silk. During th ggs ffbma ,aoq.s*t-qpm, 64:e process the glass rod acquires a positive charge and *sq:g, 4m a.,f-softqmagb6p the silk

  A proton carries a

  The model of the atom sho (adyak c9pas ee5;nji66yv8:r ,)sscws a

  A neutral atom always h9o37ks/hv +eapndod n(u kx5zob70v h2 (z (cnas

  An atom has more electrons- /np.e rz;qlf than protons. The atom is

  Materials in which the electrons are bound very tightly toercku8h uj69n9/ id 4i the nuclei are referred to heu i6ui/cj4rd89kn 9 as

  Materials in which the edtwg8go (i5i 87ft0iklectrons are bound very loosely to the nuclei and can move about freely within 05t8gkd(i i7gow 8ft ithe material are referred to as

  A negatively charged rod is brought near one end ofl zcm)b y)d7hs(f- n(, yik+qb an uncharged metal bar. The end of the metal bar farthest fro 7fc)ibnd-ymqh),s kb+y z((l m the charged rod will be charged

  Sphere A carries a net pp qlm xuiik)zh :k9-*re8 1v-bositive charge, and sphere B is neutral. They are placed near each other on ah ie)i l pvb1xz9*-qru8mkk:- n insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod:y)p/)0xzrakbjv 1 ) g ptspv9 charge an electroscope positively?

  An originally neutral elecyvq qr,f hhppkk-49-r.2v4w rtroscope is briefly touched with a positively charged glass rod. The ele pr whvrq.r2vk4f-q4hkp -9,yctroscope

  An originally neutrad8i6z:nuup l +tg; k5bl electroscope is grounded briefly while a positively charged glass rod is u:5 ; ndt6lk8ipug+zbheld near it. After the glass rod is removed, the electroscope

  A positive object touches a neu8f) 66hu(7wlnulzojfs y9r tj 0y(mf -tral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to they(8fm f(7t9r j6 o6ly ljn-zfw h)u0su leaves?

  A large negatively charged object is pl utf*m9 +bij+xaced 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 bixm9t+ u+ *bfjall, 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 c.dcaxz7b/mj91im f1cvx7 8 c sonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a diiyk/m *a4 dcbeay(c vs7x,30v stance d. The first charge is larger in magnb,a*vs(ai4y7cym3/ dkc 0 vxeitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are p:x mjar/q7 ee prl:-.llaced near each other on an insulated table. Which statement best describes the electrostatic fo-qe: xrme/r ja7l.l:prce between them?

  Two charged objects attr)uwoqp.es3xps53l7 mqew -i h7h..*onaq m b/act each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betw.h/e-)q3hw7*5on7mp.q xspui 3mq b .sl we aoeen them

  Two charges are separated by a distance d and efpn1uv/n);i+edhyriwv/v7 a 2lr, 2axert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whlnf 12n) w /e; 27ar,udrapvvi+vyi /hat are the new mutual forces?

  Two charged objects attract jni /u.z-g)j/ qt/q b;w5i 2npi* qcfceach other with 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 original value? The forceq/uc jzwict*; 2jfpqig / bq-.)ni/n5 is now equal to

  An electron and a proton are separated .bo8.;v odsvzdto)8lxt1rn8* xj .seby a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second et8x.* e sdlj1 8vx8obnzr .v.dso)to;lectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What rjhv,h2ta q*qjt7g**m5x f. dhappens to the magnitude of the force on the first electron if a second electron is placed neqjm*2ttf gd5ah*hr q ,. 7j*xvxt to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ-qc;k9d7prj ykf z9 gze. 2q-dens to the size of the force on the proton if the electron is mo7pcke 9gj -zy.qr ddkf;-qz 29ved 0.50 m closer to the proton?

  A point charge of +Q is plac vr 7c:lwys.qu*je)o0 kn4i:ked at the 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 aw y0kecvlkn 7rji s.::*o 4uq)t 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 the centroidm0 dklvh eg67b,7j oq0 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 the magnitude of the force that acts on the center7bq 60,0d7kvjl hmeg o charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vec*qco h)jtg: o1tor?

  At twice the distance from a point coaw; i)zpoe(t4i d3 9charge, the strength of the electric field

  Is it possible to have a zero electric field vamua;bq; :(j fmlue between a negative and positive charge along the line joining:;um(ab m; jfq the two charges?

  Is it possible to have a zero electric fieldo553g20 k8ks ud ymked yx2ic* value between two positive charges along the line joining the two m k*yi xu80c yk og2dse55k23dcharges?

  Electric field lines ne:iwi0 b2svq+ e+emp6i ar psitive point charges

  The electric field showw9 /-hhftg9tp n

  Can electric field lines intersec u38r,,9bjjcr+ bq kdk/s)mwct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unii2vr +ro1l*vn form electric field. Go2rn rl*1iv +vive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equatj 1 rtcfc8m +f-t :c0tcs4w6an tp19hl diameters are each given the same charge, the electric field (E) midway between the center and the surface i-ttfac:fhm c18ttwc0 rpjt4 ns91 c +6s

  A cubic block of aluminum rests on a wooden table in a region where a unfh, jzqu6vz1 y/v +d4):mvi nriform electric field is directed straight upward. What can be said c 6:vfv q+ y vm1z)r4zd,ihun/joncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near al/xx, ;a0fslb n electric charge

  A positive point charge is enclosed i 16guysafel 6qmjwbm5a9630 rn a hollow metallic sphere that is grounded. As compared to the case without the holja m6q r56ls690wg1f 3ay mubelow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduc* 59rny8rhub htors in static equilibrium.

State Gauss's law.

  The charge carried by one er c la+9a5dchp ci-a*(z zrw3: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 net charge of +2.00 mC. How many more protons tha gb3.swe1 lr9un electrons does this piece of p9wu3b ers.gl 1lastic have?

  What is the charge o +ah7ij 5jh;ibn 1 kg of protons?

  An atomic nucleus ha(vc70: ;ca +xdob1 .agzmffvz st(v(s s a 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 2.0 and u p;1o:w)iiip -4.0 mC, respectively.i1iuop:i; p w) What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second ch*xt1 tn2gm8 e1 kwe7zcarge, and the force between them is 1.0 N. What is the magnitude of 1nettgwk7exc *z m81 2the second charge?

  Two 1.0-C charges have a force between them ofn0c;sekz3( 9so)s bub 1.0 N. How far apart are they?

  The force between a 1e 4e(g)xn 2xufn: w(evh0 uib$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2 :i- b3k;zk*ua1sic g(j .phjj4tfsl2.0 cm apart, experience a 1.0-N force. If they are mih3 *k2i:j(k; ujtscs zj4fgla1.-pb oved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the fv;;it; sjkh o0ta84x 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 electrostatic force which acts on the charge at th ktt;0j vs4f;oah; i8xe origin?

  Three point charges are placed 2h z.it8fl l/* m,ptneoc*a 3uon 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 mC at the 100 cm mark. What are the mae laop. 8u,*i*mnchft2lz/3tgnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ax.z3 oq1czt2hre located at 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. W1 cxtoh 3z2z.qhat 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, and a second pol*r7a1 zwe0c bint 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 t*1ew0b ar 7czlhe 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.) p8ywnoxz +p nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on )w p8 .n+ypozxthe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); ye679,mgrtdsef10p; f npm7g Q3 = 5.0 nC is at (0, 0). What is the directn e ;,y tgdpeff69mpgmr s0177ion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ,oi/h x)wt/,vcklv1 xvertices of an equilateral triangle which measures 30 cm on a sidh/,)tlvv 1x/ikc wx,oe. 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 3.0 mkq/aj/sp vv ylg8;c40 . At what point, on a line betw/gqcv/0sl jp 4;ka8 yveen 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. Ws0utja;: 3nzbhere on the x-axisnsa3bj:z;u t 0 can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charts 1 2fjujz xwqh*c6:7ge -q is placed at x = 2a. Where can a third positive chargexu tf61jzw h*qcs :7j2 +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of2g; +* byqvsp anz46:duf3ia w $4.0 \times 10^{12} \; electrons$ 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*g:ckk6.2 jz)tt 7x,toy)f- ppkbvbe gravity by the attraction of a fixed proton some distance above it. How far above thet,p-ck 7k 6:eypz)t.)kb2* v tjfoxgb electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducttb* 8km9,myzding threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 8*t m ,mdky9zbthem 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 + (jlr )w2t-omsgtnj;f4qg71g40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuc )mosn4;2t17w (fjl-ggr gtjqleus?

  What are the magnitude and direction of the electr6j8 fnu 9( )h0kqnulm8wnhk6qic field at a distance of 1.50 mquk9fu( hjnl 6 068kqnw hn8)m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of td.*ys j nyvh4we16fd: he electric field at edvw6jh y* f4:dys1 .nthe location of the test charge?

  A 5.0-C charge is 10 m from a : .ouho et6ha.ftn74d fzs7*z small test charge. What is the direction of the electric fio.oft a*7n. sfzz6du eh h4:7teld?

  A 5.0-C charge is 10 m from a small test charge. What a:hzaw9 i: af i+(b5pjis the magnitude of the force experienced by a 1.0 nC :5iiahbpaa +: w(jz f9charge placed at the location of the test charge?

  Two point charges each (9er v*3tu d188l3urk xsptlz have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between t8p*kvrslxz389r t (ute3 1l duhe two charges?

  A 5.0-mC charge is placed at the 0 cm mjm7sb lujp;( 2oqa20sark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field j2bsjmqpo2u;7a l0(sat the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meuy. fdz 0ulnc ;836spoul7g(oter stick and a -4.0 mC charge is placed at the 50 cm mark. At 3y78;0no 6u(.dlcoul zgsfupwhat point on a line joining the two charges is the electric field zero?

  Two point charges of +3m*qtw.:./ny s;fbdc fh7rn ms;;;pi o.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldcsqsnhm/t 7. :i wfpb m;d* roy;.n;;f at the point midway between them?

  Three 3.0 mC charges are atjddqm1l y.c/q 53eg*l 02nqk e the three corners 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 center of the squaryn 0* gje2eckm l qqqd.5d3l1/e.

  Consider a square whie-id9ycblk fz:+j(-gch 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). What is the magnitude of the electric field atcl--k (edfzgi9b j:y+ the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pla z5sde)a;c nzpuh(7m:ced in a uniform electric field. What is)ha(zemdp7n ucs5z ;: the magnitude of this electric field?

  A particle with a charge on1v- klw6w5qv au*(a fgd4 h6uhm4)dff 4.0 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 electric field of 6000 N/C pou,26bopj 6af uintingo aupu62,j6bf downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carr8k3l)kft+t5g 5 wex tb+xafl6ies a charge 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 elecbxt+t 6xkakf5w+teg) 3l l5f 8tric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mc;nv49x5jnjd sz2 z+u agnitude of the electric field 5.0 cm from the sphere'z4u jvz+95cn2 xnsd; js surface?

  A metal sphere of ralr*us hgsx 57(dius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cent(5urh sl7*xg ser of the sphere?