State the law of conzn *vsgk0bgg/4p2* k5av ri d:servation of electric charge.

  Is it possible for two negative charges to attract ft t i-55ue+ksdm0tk1 each other?

  Is it possible for a positive and a negative ch odp8q 2xz6jk;arge to attract each other?

  A glass rod is rubbed w mdb2-(l 2ojqtith a piece of silk. During the process the glass rod acquires a positive l2jb(-o2qm tdcharge and the silk

  A proton carries a

  The model of the atom showsnz4cd 6dgx6j3ri; h3)0.bi nc m cu0qk a

  A neutral atom always xx +dwd2fjk,)bq k(n1 n vj9)ehas

  An atom has more electrons th*,x if yh4e78glvrn 1han protons. The atom is

  Materials in which the electrons are bound very tightly f,)yrv5ef 2iwx6 2oq4 knq0xito the nuclei are referred tok2q5 veyi2rqi w,40nfxx )f6o as

  Materials in which theiho*h aa:czj1 au8ym59zwf8l*s 32k d electrons are bound very loosely to the nuclei and can move about freely wit3zymz l saui58h** 1oac a:8fdhkj29whin the material are referred to as

  A negatively charged rod is brought nearsa 0fl -w*7,kn ua /*hzjcje/r one end of an uncharged metal bar. The end 7kjr0 ,*s*a -ej/un lwfac/zhof the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positj)igrq c7rcns8l6)(zpnw4nq y ,r .,dive charge, and sphere B is neutral. They are placed near each other onz47 ,jr ncrp6)cr .wnlsygqi (8)d q,n an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elec:i2pm.*qj mut5a,qc sass/ 14 ya1mwotroscope positively?

  An originally neutral electroscope is briefly touched with a positively cha;;o- wynvvot-)jrcaiu+(eh7 rged glass rod. The )-raw ; hi7(+tc;u y envo-ojvelectroscope

  An originally neutral electroscope is grou.0ej s:zdrk w,g 5ae d1nu 0cf*(hb8oxnded briefly while a positively charged glass rod is h era0 xdk8gh.1wb:, n zu*fjc 50se(odeld near it. After the glass rod is removed, the electroscope

  A positive object to.. 9qljryv5 9ep cdf+ax ,s3nwuches a neutral electroscope, and the leaves separate. Then a nej .wy95xp.e9,ncqsf v + ardl3gative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charg88/ (ooqyoavln 89jbued 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 ball touch the negative obyjn /8(89av o8uq boloject. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constant m xhiex-( 9 fw:w(kls5$k$, which appears in Coulomb's law?

  Two charged objects are sepac u: b:p r*xb)xp33tqs(7hmjmrated by a distance d. The first charge is larger in magnitude than the sxjmh 3x(sq : 7:tr*b)pmu 3pbcecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placeos ;k 1qg9z2;yjo*qr jd near each other on an insulated table. Which statement j9yqo sq ;kjz21 rgo;*best describes the electrostatic force between them?

  Two charged objects attract each other with a ccj9 +8kp)1 ,yh nyhxjdertain force. If the charges on both objects are doubledcy hhxy j), 8dk+n9j1p with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forceaa et;z3pd y sty;+3.ws of Ftta3sz;d+y3aey ;. wp on 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 with a force F. Wha*i,. pasm;ppg r 8-+nsp8wcykt happens to the force between them if one charge is doubled, the pr.p8pw-* aysn8 +icgps km;,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.0mu5/kfznmgh*/u)ii qun 1/sez. vu( What happens to the magnitude of the force on thv uhz0imkn* n uu )gu5q/1/fe(/zms.ie proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance/bh- 4dv zuh)*ul 82uqcf up)k of 1.0 m. What happens to the magnitude ofv q)uc)8buul/h 2f*p-hkzd 4u 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 di36blrl3 c bq.estance of 1.0 m. What happens to the size ofc6qelr.b3lb3 the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at 3 c.2wb9c(kdbws h /ckthe 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 pl/.9h(kwcs c 3k2d wcbbaced 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 a ef*te-l y/2tdo+ i3ta) att0rt the 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 the magnitude ttdfia t* 0lt- 23+aoteyer)/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 vectorpp v) 8wdsk* tqxv6n9,?

  At twice the distance from a point charge, the strength of the/,n0e nw9. d7 osigemp9ygi 8n electric field

  Is it possible to have a zero electric field value between a negative 3zcp6 omw 3bwx( ggh6usf2q +.ezzu6 +and positive charge along the line joining the3 fqwb 6gwu6u+x2 ehs m(3c.6zz+pgzo two charges?

  Is it possible to have a zero electric field valueqm )pkq ia0h+ g,v4sq; between two positive charges along the line joining the qiksqp4h ) q0g;am,+ vtwo charges?

  Electric field lines near psitive point ud0-phs)ot 0ybr095i cm+gi echarges

  The electric field show(l +ox p,t) 4khn wgqc.uk11khn

  Can electric field lines intersect u tl(ph pmzi;l,3+tl99.c16 (pkui7zj va muzin free space?

  A solid block of metal in e(wcnj53b.di amwowpek 38-v +l,7 rsulectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blocc3l +wk7. jbdpuo83wsmw(e, ra5vn-i k's interior.

  If a solid metal sphere and a hollow metal spherdp-e wrvvnef57+) vj* e of equal diameters are each given the same charge, the elect7e+) rn-* v jevdfp5wvric field (E) midway between the center and the surface is

  A cubic block of aluminum2qyk6ru( lyf0eyo/z ; rests on a wooden table in a region where a uniform electric fie2 / eoyyul6rkz (;fyq0ld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecd9 z smri- z+u4mc5h)plza:9jtric charge

  A positive point charge is i lqj+3c-0dq*u45eqb p5logp enclosed in a hollow metallic sphere that is grounded. As compared to the case wito* b45iqje0+p dq3 -5lqucl gphout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equil9k s m)j(z07s/ar33 1g fsepx0tdwh qgibrium.

State Gauss's law.

  The charge carried by one electrw5smhrf6 7oo2 f,yzd .on 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. How061 b*k2c vzf hhq1xdi many more protons than electrons does this piece of plasth 0*1kbxdf1v 62 ciqhzic have?

  What is the charge on 1 kg o 7;adx nk8z7 7c(d8 c0sniaowwf protons?

  An atomic nucleus has,;;z wrm- mz 2gdphgb(nwe7z9q w c(s0 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 -46fkda;9ua/w q.vnqu815 c)jhz0 wnwd.0 mC, respectively. What is the magnitude of the eled95wka1 hv qun q;8).60u a/fwcdzjw nctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between themdvs y dpt8l;pb9;/ rh- is 1.0 N. What is the magnitude of the second chbdtdl/s vp -9hyp8; ;rarge?

  Two 1.0-C charges have a force between the 5qlb,iba uf( .flj(t.,u4b crm of 1.0 N. How far apart are they?

  The force between a xpz1y u +m:x)j$30 \; mC$ 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 force. If*n2 z shh)vwgc1 n0/ej they are moved to a newjh egs02wzn/v1*) nch separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on theb y v7(-/x x( klp9/podb.petx 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 t bkp-vx o./(7 9b/eplypd x(xcharge at the origin?

  Three point charges are placed on the x-axis. pv0 /0;nc+xr+qp o jyl5v6v-mn3ksf yA 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 magnitude and direction of the electrostatic force which acts on the charge at the origi6/ ;lfvv0m 0qyx5-k+ p yrp3v ons+cjnn?

  Three point charges are located at the following p 1n/ -fumckb (xow2*yjositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q32 jmfwnob1cu- kx( */y = -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, and libo(nx)i::v aayp31 a9elu -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-le :vianu3apexloa ) - i1:y(b9lft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC isu640vp* ,bhnkcuky ; v at (0, 0). What is the magnitude nk u*y4ubv0 kvcp 6h,;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)y 50xjko+j2es ; Q3 = 5.0 nC is at o+2yx jjke05s(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of l*p+fql6p pq2 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm onpq q*p2pl fl+6 a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q an .p65fpcqca4wd +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 elepp54q.c cafw 6ctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin a/c9fqt7xf(a cnd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is f(/ f9q t7xcaczero?

  Charge +2q is placed at the orc tb7pi5j4c6 loy6s 4vqgu;/iigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force oc46tlscb vpu6/ 4giy;i7jq5o n it is zero?

  A copper penny has a massytc4gkl + z0q7 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 by the dai2+ bh4c8tg attraction of a fixed proton some distance above it. Hoc +4bgia28 dthw far above the electron is the proton?

  Two 0.20-g metal sph85msk-mh lorabc5p81eres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, an8 mpcmr-k5 sl158ah bod 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 magnituai udjd1a7n,-o.tzbv+5l; gg de of the electric field at a distance ofg5a+bod - gnl.iaj1 u d,7zvt; 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista nms om4s231nbpes5y1nce of 1.50 m fs15 4o es3pbnysn2m m1rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnirjox ay jjw6n8 ef-rm((k q8(/tude of the electric field at the location ox(e/km f jqjyjr 6aow r88((n-f the test charge?

  A 5.0-C charge is 10 m from a small test charg,1g+/l)rrct)dk wo)ofj )bnie. What is the direction of the electric1wj) ) g+rid)ck/nlbrfo)o,t field?

  A 5.0-C charge is 10 m from a small test charge. Whatfozc+ v(l8;i(yla(cf is the magnitude of the force exper cof ((ia(;c+vzll8 yfienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eaq+7f3+rhftdmi lgim *q;r //vch 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 m3r;m+h r/iq*d/m lfq+i7gv ftidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -vdra 5(7,ea hiw 5w2ixlncb254.0 mC charge is placed at the 5 nahbv(55drcx57al,2iwwe2i0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed gi81t 648z5k3lmnl gngyte ;t,kcv g+at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric f14gz,ny;l8ntmtgic 8gt+6 elv5kkg 3 ield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x *-swu) zk( o* f; i(qy qq;t)zwxv1abf= 0 and x = 0.20 m. What is the magni)q (;z-zft1usq;y wx vaobw i*qk(f)*tude of the electric 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. Trhw 11clm(tm :he last corner is occupied by a -3.0 mC charge. Finhw c1ml1r(tm :d the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges kukh keij6+ km-ia (nwq255 v;jvb 8f6are 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 electrif2q5 bjk;6wh ij+i(uvvk-65 ae8k km nc field at the square's center?

  A force of 10 N acts on azidvc 8k / c0mw 1fooz9+l4du4 charge of 5.0 mC when it is placed in a uniform electricc/1l +4 zzw 0mdki84fuo9doc v field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC had/qa u(as xk, iivd;dj 5xh52.s 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 electr58o e /eehkn4ai/uz,bic field of 6000 N/C pointing downward. What charge must a/ /o iu e845kznh,beebe 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 imaz;,lkzw7 w6 s placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction o7zwl a ;zm,wk6f the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0ytk: x50i kti: mC. What is the magnitude of the electricix ki:ky 5tt0: field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whata2 5lxwaxz(h 8 q;c1fi is the electric field 6.0 cm from t(fc1iaw2xax8 qh 5 z;lhe center of the sphere?