State the law of conservation of electric)o p 4f+pnvs p5)jcn9cjubl6/ charge.

  Is it possible for two negative charges to attract ehzx6/x jn /pe)ach other?

  Is it possible for a pt0ni6qi qeyzifk; . )pdglb2*0q-m* iositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During thmh(btbn5xs; h04- )0ct9wupg6dju s xe process the glass rod acquires a positive chargxshntb;d40xtp c9 gub w ms 0(5u-j6)he and the silk

  A proton carries a

  The model of the atom r, kjh , v1d1;vufsg37 ailq/sshows a

  A neutral atom always ;ya9kc zgead68k 4uk.has

  An atom has more electrons than protons. 3 b5h 1innx5ux The atom is

  Materials in which the electrons are bound very tightly to the n3l 0ha/ye(ipguclei are referred to a3ihy0apg/l e(s

  Materials in which the electronr)41 9 cjecx0- vhpvylo3x:qj s are bound very loosely to the nuclei and can move about freeovchcxxjr jp:431q9 ey-l0)vly within the material are referred to as

  A negatively charged rod is brought near oneacp 0- +deg/qg)c+a lc end of an uncharged metal bar. The end of the metal bar farthest from the chargeda)/degc lc0+ gqa+- cp rod will be charged

  Sphere A carries a net positipf p:sj s. sq29w.jrb+ve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corsq 2s.+ fp9:ps.jrwjb rect?

  How can a negatively charged e)guud .o 19hurod charge an electroscope positively?

  An originally neutral elei4q: x5n -tr.icdm, 8brz-eyectroscope is briefly touched with a positively charged glass rod. The 8 r ey:-zx4r,dmc5n.it-be iqelectroscope

  An originally neutral electroscope is grounded briefly sdp4)zf *m- cz ;uhs4pwhile a positively charged glass rod is held near it. After the glass 4-u4; p*sc )phzsd mzfrod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves mjn9t-* 8rfabd, j bny7*zk0j separate. Then a negative object is brought near the electroscope, but does not touch it. Whattk *nbj -a7d,bzyf8m9 r0j jn* happens to the leaves?

  A large negatively charged object i)5f m vpir*ch0ek x6kx(d*vf5s placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutrx)rhd5v( ikc* vp kxf0 *5e6fmal 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 Coulombl(x6 z(jej.z)hb. kha constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge ,vm xwr b3wv iu:3 0bg ,zqr17w5u-tniis larger in magnitude that7:u qz w1bmv,rb3wwi,5v -0x ur3 ngin the second charge.

  Sphere A carries a net charge apnfay77l(4suupt7ru)8gl v ( nd sphere B is neutral. They are placed near each other on an insulata(pg)un7tvrsy477u u(l8lp fed table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge ,j0o;uz1x vk vur0jl qd6y9p2s on bookyvv91u pz20d;jqxj 0ul,r6 th objects are doubled with no change in separation, the force between them

  Two charges are separated by a disti jdb187soy0y/z u/ udance d and exert mutual attractive forces of F on each other. If the charges are sed /y0suozib/y178 ujdparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract e7dl: hvxppg8 ;09 avfmo(4ozfach other with a force F. What happens to the force between them if one charge is doubled, t79vl hpvmoa(z x 0go8d f4pf:;he other charge is tripled, and the 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 1.0 m wg/luggo, 4*xc3l xg3. What happens to tlguo g,cx33g*gwlx4 / he magnitude of 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 g+)bf eo9ok v4a mr(42 cs,f itdzf)o)of 1.0 m. What happens to the magnitude d fgv ifc4es f),to2br)(4z9o +aomk)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 )eciivic * 6mgfie35+ of 1.0 m. What happens to the size of the fem3 i56evg+ )fc*c iiiorce on the 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 sec s;smog/z / gtl-:mla.ond 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 m/ l-s;zstg: ma./ lognet electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Wh x2yyvm k*bt),en a second charge of +Q is plat*),mvyky 2x bced 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 center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vcrm0fwn cg:q2 pm:p9/ector?

  At twice the distance from a point charge, th0x bff9wd s zq6r*kv02e strength of the electric field

  Is it possible to have a zero electric field value between a negative andyoowf:lm7( u;fiafgj z-cyy8(t -(a71i mhy, positivew(:iazjau;(yo(fg o myyh7 87f --lymitf,c1 charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positiv u)n:sbgk 5ps-e 3vwr0e charges along the line joinik:vp 3swnu 5r-besg0)ng the two charges?

  Electric field lines nema79 blcf7r/5eolm,sh6a 9q y cei-w:ar psitive point charges

  The electric field shov- 7unt(qk;a mwn

  Can electric field lines interse sg26vp;mi0;s7v wdst ct in free space?

  A solid block of metal in electrostatic equl+szl3 4 r8ievilibrium is placed in a uniform electric field. Give a statement concerning the electr 8e43zv +sillric field in the block's interior.

  If a solid metal sphere and a hollow me2zvx,ct8(t sftal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface tf vtz 2,8xcs(is

  A cubic block of aluminum rests on a wooden table in a r5wt o/1ldreyf4hrx9xbe:k08 egion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacwfx4:1b/oh erd9y58 0 rlkte xe?

  If a conductor is in electrostatic equilibrium near an electc-kxc 4*tpj*i ric charge

  A positive point charge is enclosed in a hollow metallnxmzvt7hk f x,l+9:k4ic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a9m kzxhntf7v+k4 l x,: point directly above the hollow sphere has

State three properties of conductorsxcc/io z(v+v(.svl 1 pf)f8ks in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 4t49vw mh.qo *su0 azl$e = -1.6 \times 10^{-19} \; C$. 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 2 nr, )wjcx3-iklrsx6mC. How many more protons than electrons does this pix6,kl2s)w nj-3x rr ciece of plastic have?

  What is the charge on 1 kg ofuqw yrpw 5sbb/(--w ( 5nmk9xo protons?

  An atomic nucleus has a char*hhs,sin 3,ktdv:w (pge 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 c d3k 1lxofpi*d l8z)(qm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fork qpl f*(odd18i)x3zlce between them?

  A 1.0-C charge is 15 m from a secon/pigpgbo264u,dp q (z d charge, and the force between them is 1.0 N. What is the magnitude of the second charge?z g pqibp6/dugp(,2o 4

  Two 1.0-C charges have a force between themuo7uq0 gj:l ,hs:gk tegl,i6zv 2m-q9 of 1.0 N. How far apart are they?

  The force between a p 9 :.wvi(tg je42n 9xeppgky(ol/e.p $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 d; rx 2hpg-h(i8vn2dc cm apart, experience a 1.0-N force. If they are moved to a new separation2v ;(x -dipchdn 28ghr of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed2cpn22fj me5e 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 electrostatic force which acts on the charge at the origin?cnm22 pe2ef5 j

  Three point charges are placed on the x-axis. A charge of +2.0 mu q8/hhf4anfiu)+jf) 0xildq y4 rm xu6 :77tsC 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 which acts on the charge at theu)lns 4d):7q0tf y6 f/hhi4qf7rxu+8aum x i j origin?

  Three point charges are located at the following positions: Q1 = 2.00 mCa8c1of d;)e cp at x = 1.00 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 thpc )acdoe;f 18e 3.00-mC charge?

  A point charge of +Q is placed at the ce /oo lc/t-rvg4nter of a square, 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 4/cvg-o/ tolrat the lower-left corner?

  Q1 = 6.0 nC is at (0.rf;8p+*q *skoj xg bji)k/ql -30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whapsj r8;oki*lb fq-qg */)xkj+t is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1wok/s4) i i+md.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is thim+)si/ w d4koe direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at 3on0ate)piu1k ,3(od;f seo-) ak mq fthe vertices of an equilateral triangle whichpf3eon (qtamkdek30)1-i;as)f u , o o measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Qc*u03s md 4y6:( myw jnrgb)r/yhi pp. and +4Q, which are separated 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 electrc(myrpum)w3d 0rg*pj yn6i: h.s y4b/ ostatic 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. Whfg9+vas9 w9yvere on the x-axisws9 9+vagyv9 f can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = v2 ph.rap1m7v2a. Where can a third positive charg7pvm1r.a p vh2e +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tf2vz)km2r 1o motal 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 g.cjyj n9k0 els 30.hmdravity by the attraction of a fixed proton some distance above it. How far above the electrj.0enjhd.0ls 93 ckym on is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thr(y *lp5lh8fdpg l jpy)0auf;9 eads which are 30 cm long. Both are given identical charges, and f 8ah9u*l y0p;f5dlpyg( pjl)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 chart0r- 9xexn zo7ge of +40e. What is the magnitude of the electric field at a distance of x- tx70rn oze91.0 m from the nucleus?

  What are the magnitude and dirkat 1jt o333edection of the electric field at a distance of 1.50 m from a 50.0331tdek 3a toj-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whr:,i/p oxjxbfi:v q+ 9at is the magnitude of the electric fielp9j,ibxxv i /:q r:fo+d at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire(1edg*bg+p e ection of the ele p1beg e+(gd*ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude6l ga+dtx.n(o(han kdk87, -ku be *qx of the force experienced by a 1.0 nC charge b6klon7x. quae, a(g k8dk -+th*(n xdplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and+541 b0ce nelwfnv/ uy are separated by a distance of 4.0 m. What is the / +e5u14wbvn0n yflce electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 c5 na(pc5nwz(byvy 1okf -,a k8m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?ka-,fkn5vb(o8 acwnp5 y( z1y

  A 5.0-mC charge is plasx .f)b:w9cb) z wxikz4g /j is*2xmh1ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At mzx cbig/x ) )4bhz:f92*wsw.k s1xjiwhat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ; /ekt26c;urh xcy)rs and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elecsc) 26x; ;rrthue/ykctric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sd 3aaf (8nej0;g-: yffyti ap2quare of side 0.50 m. The last corner is occupied by a -3.0 mC char2f -y ajed:a gtf(i3;yf80 napge. Find the electric field at the center of the square.

  Consider a square which i1e )at qy5g crh6f9hs2s 1.0 m on a side. Charges are placed at the corners ofy 1t)fr5 962gqeahc sh 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 center?

  A force of 10 N acts on a charge of 5.0 mC gl(u9m(jctj9x 5zrzaf ce-0; when it is placed in a uniform electric l9 z(ta;c r ef( 59mj0jcxu-gzfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass ofgvx.p3mz e+x /;b+pzjk 8loi76xz 6g f+ lirh5 $5.0 \times 10^{-3} \; kg$. 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 elga :-/ug(liuq ectric field of 6000 N/C pointing downward. What charge musi(/ aqg:uug-lt be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball i6zb;p7p/dz zns placed inside a uniform electric field, and is suspended /ppz7dnb; zz6against 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. What3yuunqm 9bi6 i8oc 62p is the magnitude of the electric field 5.0 cm from the sphere's s6 9oqi3uibmc8 2u p6nyurface?

  A metal sphere of radius 2.0 cm carries a chargevy;3enfy go.1(uu(mcb2+i 4oj /rz bn of 3.0 mC. What is the electric field 6.0 cm frb e2uuyj.g3 oiz+ovc1fy(( 4bn; mr/nom the center of the sphere?