State the law of conservation of/ fn+9x ohzh-h electric charge.

  Is it possible for two negative charges to attract each otyh-s ,*ld p1nzher?

  Is it possible for a positive and a negative cn wxwn.(:p2:7 xypdn/l f3j ynharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the r0sdzsc/ b)3i)a)payprocess the glass rod acquirb )sp)3d/cyi )a0rsazes a positive charge and the silk

  A proton carries a

  The model of the atom showf5n gci zy)x*6r9sks. s a

  A neutral atom always hasosn yv .u da;ftl*6)v0

  An atom has more electrons than protons. The ai1y w,-k voy: imn75xhtom is

  Materials in which the electroe8ssr *t8xx eagv8x*k1ug o5: ns are bound very tightly to the nuclei are referred to ask *s eaux81o8tgrs:xv5 8* xge

  Materials in which the electrons are bou3d3 hs0xh.af80g fgwlnd very loosely to the nuclei and can move about freely within the material are referredf xs0 w.3d8ghlf0a3gh to as

  A negatively charged rod is brought near one end of an unchashrtl+4 fq.h+rged metal bar. The end of the metal bar farthest from the charged rod will be crl+4tqhfs .+h harged

  Sphere A carries a net positive charge, and sp 0r4uw:r8 sz 1ragof5/hz ee-ohere B is neutral. They are placed near eagw/8osf rror4e 0z:u1a hze 5-ch other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod c.we,jq6i wl:a harge an electroscope positively?

  An originally neutral electroscope is briefly tbr pkpk pp2ie81/s;6h ouched with a positively charged glass rod. The electroscp6ie/p ps8r2 kk 1ph;bope

  An originally neutral electroscope is grnpw(hrzek (cf:k-jh.rm 0+-o ounded briefly while a positively charged glass rod is held near it. After the glass rod is(r+-- ch ok. m(0nek:zphwjfr removed, the electroscope

  A positive object touches a neutral electroscope, and the 2(+f+q 0 c tl /vkbxr5uyg:7devnkd1xleaves separate. Then a negative object is brought near thekb0exd7xk+ v qgt/c+15rf( d:2 nlyuv electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tab- vg27g5;d*yamx jkfple. 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 rol *j2af7gyvkdx5g ;-mpls 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 Cp- .ksu scy-sr-0q2kjoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first char;6b2amphw2xz2*pscx)nad zxoc 0; a5v/7 sy qge is larger in magn0z yq;hdbm s6avc2oxs * w)zpcan;5 xa7/ p22xitude than the second charge.

  Sphere A carries a netpquci/6od 7y a02rnurj5l; k6 ,ibk 3e charge and sphere B is neutral. They are placed near each other on an insulated table. Wkdp l5 yeqr o6nr ij2b7/,;a0u3 iu6ckhich statement best describes the electrostatic force between them?

  Two charged objects attract each other with 7as3 l) iqnbbb79ei u8ds zdyw,): r/wa certain force. If the charges on both)wb sduni/ 3bqw)ds7i y,l:8e rz7a 9b objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutua hu 13gcggpe;636xarpkhnug+b- r1 x4l attractive forces of F on each other. If the charges are separated by a distance of d/3,ggap xgh 36;n h4gre3ck6ub ur p1x-1+ what are the new mutual forces?

  Two charged objects attrag0u: tf/s xib:ct each 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 ori:b /g0xuf:tis ginal value? The force is now equal to

  An electron and a proton are separcespni0 h 19 *zrz,t27n -ypdbated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed n2n*y pnbh0 ,79e1tr pczsdz i-ext to the first electron?

  An electron and a prozzpj)6 t3yonh2 2-ogston are separated by a distance of 1.0 m. What happens to the magnitupg6)z 2t nj23o-sy ohzde 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 of 1.0 m. dnad iqpqg l5 w,0jo48hqai 4 f)7a2m9What happens to the size of the force on the proton if the electron is 4igq7qaq p h m4w ai0,2lad98o)nfd5jmoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a iwmol4 5.inxu czx 2;l p)/i8ysecond 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 chpl /iomlzi.n)x wxy 5u;i 4c28arge at the center of the square?

  A point charge of +Q is placed at the g za0lu5*y8xl f.y u .e1vwke.centroid of an equilateral triangle. When a second charge of +Q is playu zl*. g.e.ae8u5fyv w kx0l1ced 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 n(phg5cps- pr+ ot a vector?

  At twice the distance from a pointa3 wjg sp5t7,-mrl* rs w5ii9d charge, the strength of the electric field

  Is it possible to have a zero electr*j4gner f6iv8n,t+/hsso9h gic field value between a negative and positive charge,j g/ehr *sno v+9gsh68 tfn4i along the line joining the two charges?

  Is it possible to have a zero electric field value between 9m +xybsye-6ftwo positive charges al yy-mx6be s9+fong the line joining the two charges?

  Electric field lines nefxcv;ju4dlv0 :3mvb1 ar psitive point charges

  The electric field shown d*ewuwd,dn.al :mo.;

  Can electric field lines inbm zym:4car 3:tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a-sb4 qnj7l seypr6v,;zwm+q:q g- .fw uniform electric field. Give a statement concerning the electric field in the block's inter4:pw;em,lq q. sn-w-7sg +y fr6 jvqbzior.

  If a solid metal sphere and a hollow mel;of+ *kuhz bwnw11.gtal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface iswf +.lb1nwk1hg*z;o u

  A cubic block of aluminum mjirk;*. 1qz,a, fui brests on a wooden table in a region where a uniform electric field is direcqm.uz,1i;rbj,ak*i f ted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrim,49akx idh 8ac charge

  A positive point charge is enclosed in a hollow metallic sphere7 /h3d:sou yvv that is grounded. As compared to d s:yv/o7vu3h the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properti hcbt0n +qxi20es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electrojq co z5a3tl/ kww;9l1n 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 :.7rqslv-kqo6tdko y5)w s b( many more protons than electronwodok5s vqb.)ks: 6rylq 7(t-s does this piece of plastic have?

  What is the charge on 1 kg ofb:toasj*p 4z x4lo 44f protons?

  An atomic nucleus has a cujtwxrvu :/5)- jfd n/harge 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 mC,luui(-nx(; 0lv.csq;tp 7k wn respectively. What is the magnitude of the electric force bu- xntk(.wlq v;l0sp c;uni7(etween them?

  A 1.0-C charge is 15 m from a second charge, and the force betw uo 9dwpp0wvrmb4m/v7ou y94/ een them is 1.0 N. What is the magnitude of the secwvm b /uoy9 4v07 our/p4dwmp9ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tt eass)h . ,2qla(i-nahey?

  The force between a jp*-)fb7vm ;vw kw *go i1vyi4b6 qe29o9 ugpn$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience avi3)nan4zc+sm / :n ea 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thv+3z ies:)m/ na 4nance electric force between them?

  Three identical point charges of 2.c+ksm1n oz)o n h8;c),i vcg)r0 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 ,))co+n) crhi;1vz8km cnogs the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are plau,o+ flrarh-peu s5,(ced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rio+fr e(5,-upuls ,ahr ght 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 origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC psjzap7c,y u2( hv4p.at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mazu jy.7 cvps4(2p ph,C 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 c/1a 41wbl to+(rg qydd qexym069siz 6enter 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 pos b/t s+me(ydlqa4qd669xi0 rg1wz1o y itive 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 iebc bhxn0y1ei)4p kds. 5*1m us at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force k1 sd4y5ucpbe 10xbie)*h.m non the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 +,s+b/ fvag 4zl ohdve,u:(wd= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the d, wdzlou/4ghe,+b a(dsvv +f:irection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an ea9c5;v pruuvp:y o0 +yquilateral triangle whiup:av95 o;+0 pycuyrvch 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 +Q and +4Q, which are separated by 3.0tt(w 97k apagm*e -/+iyt:qb f m. At what point, on a line betwee7e +b* itw/ptky- at9agfm :(qn 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 hpw1 poz)f)s(+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 oz(wp) f)1hpsit is zero?

  Charge +2q is placed at the origin and charge -q is placed at *atinc/ tf/ .7q(fnm o8 j1dmgx = 2a. Where can a third positive charge +q be placed so that the force on it ini/ (ogj18 tdf*nmatc.f/ m q7s zero?

  A copper penny has a mass kurqb()hb)-. vdn5 ma 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 gr t ac*,9 .dmrlhn7 dmsj-b1*,tiq/aqfavity by the attraction of a fixed proton some distancer jhqc7as / mt.,*n 9f*1m-tlbdda iq, above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fro.n0o grg5ipnj5z * fp7m a common point by nonconducting threads which are 30 cm long. Both are given identical c5 7*n jroign.p5zp gf0harges, 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 magnitude of t659 bzz hyce:vhe electric field at a distance of 1.0 m h5 vze z9by6c:from the nucleus?

  What are the magnitude and direction of the electric fielc7hp z mbmbh7sq8j 7:8d at a distance of 1.50 m from a 50.0-nqhj7cz8pm 7 h7m b:8sbC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeyxwqa*gtg ;4+w:.aq.ec 3 git of the electric fi:3ax4; e+ctqwy *g.twqiag g. eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is ri74hc vnjx(e 3-k/; deicl(/bkvgr 6the direction of the electrh/b 6nrd3c;7 ric4(i-ee xvvlk/(g kjic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thdud6d nz)wz t bik)g c1j.)f7,e force experienced by a 1.0 nCdibfgdju1 z ,c)zw.7d6 tn))k charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C c rcjufx915 eya.t-tf/7cp8k and are separated by a distance of 4.0 m. What is the utec1frj 5pcf7x 8yta/kc- 9.electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick gvg. manypw y 2bm /-14;d.jmxand a -4.0 mC charge is placed at the/x.y.d-1bmjg wm p4 ;angy2mv 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 meth9 3wo 7rj(drzh9f7pp er stick and a -4.0 mC charge is placed at the 50 cm mark. At odw7pf9(p7rh 9h rj3 zwhat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed t 3bq*ff52dx vat x = 0 and x = 0.20 m. What is the magnitude of the electric ff btq5fd 2*vx3ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sider5ms i(ss-e 8kn0-aia d+fy:h 0.50 m. The last corner is occ s -ssrh0iym +e85d-(:kif anaupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges.;ef6p xck fw hrqaq*p.g15o* are placed at the corners of6a.c 1hqq* 5wfgr*xk.pof ;p e 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 when it is placed in a unifo ,)y((zz/ lvas atooq(rm electric field. What v,() tqyz( o/zsaa(olis the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass jblc 5,3i6 cpeof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of m0irwhz49 mm0tagq1 f1v (*qblass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspend9r1 hzf 4m(lqt a*0wqm01vb iged?

  A foam ball of mass 0.15 0*lvavw)e 4qxk r4md,0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the 4 v) d0*vml wex,qar4kforce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrizar3xga:+mdtqn y 0y3,jw1c tj530qv es a charge of +2.0 mC. What is the magnitud3 ydvj0 t3zwyt:50qm1, rxq +c 3ganaje of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of *eh z8zr +3u3n/km90saa egmr3.0 mC. What is the electric field 6.0 cm from the center of the3m3 ar a 0+uh*zegsk8 9nzm/er sphere?