State the law of conservation of elec-zn:8k 0xnt,lu7 fx:edyrsj2 tric charge.

  Is it possible for two negative charges to attractjrv +9jln94 pwwn6 :dct yv3/j2 ljsx+ each other?

  Is it possible for a positive and a h,ot. cg,61ec h dpqc5negative charge to attract each other?

  A glass rod is rubbed with a piece of s3 b6o eoyo86luilk. During the process the glass rod acquib3eoo8oy6 l u6res a positive charge and the silk

  A proton carries a

  The model of the atom shows 2 mymacl -2fsj6y 8;xga

  A neutral atom always hass,(wu; /hjzpw

  An atom has more eleci/ 4dkfn g3gw8trons than protons. The atom is

  Materials in which the electronsd ,,8hcf9w rk(fed2 wz are bound very tightly to the nuclei are referred ,dh(9 zfw8wfd2k e ,rcto as

  Materials in which the electrons are bound vo-;q k+3bv xotnwf(ioiq)vb62y :*awery loosely to the nuclei and can move about freely wiwx) voy q+vn* o:k62i(i3 wftb;aqob-thin the material are referred to as

  A negatively charged rod is brought near one end of an /ftmc- yw)y:ukcwt3/(hzb3 xg ue8,cuncharged metal bar. The end of the metc3ybkmwz/uc) uh/: gw8tx3- fe( , yctal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spex9kouqxkpp myp11w31e d-2 /here B is neutral. They are placed near each other on an kdopkm2 puxq91 p 1xy -/w1e3einsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chahkt6;qr* c 4papb)9pv /tez 4arge an electroscope positively?

  An originally neutral electxpohyk7;i4 r/ roscope is briefly touched with a positively charged gh;4oypk/r 7xilass rod. The electroscope

  An originally neutral electroscope is grounded bri 2/g(r(tjx na+vgz2hfz:gf(f efly while a positively charged glass rod is held near it. After+htg/ z22gfafrxz(v( n:gfj ( the glass rod is removed, the electroscope

  A positive object touches a *znai19d5 .n7wuo lch7tz z 1eneutral electroscope, and the leaves separate. Then a negative objl zcwnn.*51 uoe17 9h7zdzitaect is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on t-r4p cqo*o1qo0(pgz k idcp4n2x6z: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 balzg0c1 ptk o x-p2o d46c(q4ionq*:r zpl, 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 Coulom;*ztiyo n(v(wb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated b: fbgbr/m5p1 brk2zx(y a distance d. The first charge is larger in magnitude trm5kxzfbb2b /p:( g 1rhan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e+n t9t;:hll pmyp* t8nd7lku8ach other on an insulated table. Which l:8p7p8llh tn+ dtmn*ytu9k; statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge 3(q x9ak*ilr ygq5b d-wg+w:qs on both objects are doubled with no change in separation, the forw:b3xg ild9+ - a5rqgy*kqwq (ce between them

  Two charges are separated by a distance d and exert mutual attram7d o 6hf, q71ttvykhhm 7h;2 rmsq6xkis+z.6ctive forces of F on each other. If the charges are separated by a distance of d/3, whr.sh6k x m261 mhmt kq7+7 iv6q7sf,zt;dy hohat are the new mutual forces?

  Two charged objects attra9in( eb mg3fe/3rl4u pct 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 centerrm3 begie3(pn94ulf/ s 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 md 8+d5y, (:vzlf6ztfeja he8 o. What happens to the magnitude of the forc: e av+fl88(ezy od6,d5fhtzje on the proton if a second electron is placed next to the first electron?

  An electron and a proc)3d p mth-pb5e --rrgton are separated by a distance of 1.0 m. What happens to the magnitudh- p) pr3rc-5dt b-gmee of the force on the first electron if a second electron is placed next to the proton?

  An electron and a pro/qypt a eg)ozu/w*n(8fd 8e q:ton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pq *8w)yt edg 8:oaz/qfupe/(nroton?

  A point charge of +Q is placed at the center of a sqot purw ( j8pi9yi1r .*orv0:juare. 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 other three corners of the square. What is the magnitude of the net electrostatic force actingj9py . ui8o*riwojv pr10(:t r on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilat.8wgf/ ey t9neeral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of w/ngt ee9.y8f 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 .8nbwf,-8abg*ir si9 ltrf1na vector?

  At twice the distance from a point charge, the tal 30 hob s/k);a(al h4-yfxlstrength of the electric field

  Is it possible to have a zero electric field value between a negativvq;t5 jsr*c3 y(g:pxje and positive charge along the line joijt (jxyp cv35q* ;:srgning the two charges?

  Is it possible to have a zer l+4t9tke t;5ed jlm8po electric field value between two positive charges along the line joini t5 e89pj4km+e tdllt;ng the two charges?

  Electric field lines near psitive pointr 8xpbmx8p9,s/ j g;rrnf/yh - charges

  The electric field sh-83wd kzlmjm-mr b9a 2m* r d36yhvd-fown

  Can electric field liner-twd 7ykeriw )o u68w(:dc;fs intersect in free space?

  A solid block of metal in electrostatic equilibriu,m9i(z ken27 tkwzm e3fo a71hm is placed in a uniform electric field. Give a stawe,m73 a (7o zk hkt1ez9imf2ntement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o52z6q)8ips 7jr cu1kp; mhdr+vxi 4 iuf equal diameters are each given the same charge, the i5 vcp h 21rsmki8)+qzx6jur iu7dp;4electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regionxv:f,+x4 t 1scq/k ieqe ;;zyd where a uniform electric field is directed straight upward. What can be said concerning the cxcxt;yk+1s: v4;z ed ,fqieq/harge on the block's top surface?

  If a conductor is in electrostatic equilibriulk9 jqur.0bh/u5;y qem /t-ezm near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that rdu; ex a*9k b.3t:hpkis grounded. As compared to the cash x:kt*eprk93ud.;b a e without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static2pdvmo8r c2 5mw.6 1dhnzvl/m :nqq-s equilibrium.

State Gauss's law.

  The charge carried by w-ko5bsbbro c+-7l 3 hrd/k, yone 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 mC. How many more z0hej 854y7 ehpufp)yprotons than electrons does this piece ofy47hfj5zpu 08pe yh)e plastic have?

  What is the charge on 1d+9 ,w adr)awk kg of protons?

  An atomic nucleus hardnsv q0 l 7i.5a0 fng.s5c9ncs 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 23c*f e)3+))y kqn(epe 6-apqhwyellw.0 and -4.0 mC, respectively. What is the magnitude of the np336 ))wa*)eef-+e lqyleqp ck(yhw electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bee (cjf-oa;vy)i.l c a7tween them is 1.0 N. What is the magnitude aa jvl( i f7.)ec;yc-oof the second charge?

  Two 1.0-C charges ha. b:/d51bgbtkfpimu grm1x 9 4ve a force between them of 1.0 N. How far apart are they?

  The force between a v-mb(eq1p - tu7 hs3j 3tf2ppr$30 \; mC$ 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 fod(v2y*cg: dtv47 zeix rce. If they are moved to a ti7 x *4dg(yezv:2vd cnew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Th/ s12hvra2t6z (l+k snyodrc(e 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 th1(hrsy 2czo t6avdskl /nr2(+e magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2+evy94ce s h+t.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+s94yvch+t e e the electrostatic force which acts on the charge at the origin?

  Three point charges are located vxt2n kg-0b3qat 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. What is the magnitude0-tnkv 2q xg3b of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and pqjs zt;1:e p*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 lowerep s ;*t:z1pjq-left corner?

  Q1 = 6.0 nC is at (0.3orf qg2 -5v,yg0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 gro-v 2f yg5q,nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, /.g xtrbqvywj4 +4to60.10 m); Q3 = 5.0 nC is at (0, 0). What is tyto. xt rgbw6/4j+qv4he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placg (vgnp4oq3.vdr69ijn qfg hcq 97e;6ed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which ac v( 3d g6nr9 ggq;. vqq7hpjfeon4i9c6ts on any one of the charges?

  Consider point charges of +Q and +;zbtdrq,:1n i4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possini,q r:dtb1z;ble 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 /(mg;gszm+r kv-zu ,kp 5sul.. Where on the x-axis can a third charge be placed so u5 m(kk;p.rzvmgusl-g ,s/z + the net force on it is zero?

  Charge +2q is placed at thez *. u qe;5lb-um:qff.wmlz5k origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on -f. :.u we muq;f5*l zqmzk5lbit is zero?

  A copper penny has a mass of 3.0 g. A total o d0rb,xuc1lb*sc0c * cf $4.0 \times 10^{12} \; electrons$ 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 gravite m1p9;qpzht)80ge g*rrcue(yyqw;+y by the attraction of a fixed proton some distance above it. How far above the electron is the pr q (t0ug ;9py+wp ce gqer1)ey;mr*z8hoton?

  Two 0.20-g metal spheres are hung from a comtn65shgm;h ,rh hpe;n n./,k,,sfp zjmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elect h,ptnh ;hhf sm5g /k,n6ne.p;,,j srzrostatic 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 the exrduq,( b6o ;c(wayj2 lectric field at a distance of ;xcrwq 2o(ubyj6a(, d 1.0 m from the nucleus?

  What are the magnitude and direction of the electrijlm25mtp/+ aic field at a distance of 1.50 m from a 50.0-na25imm t/ p+jlC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magng3atj ,nmozr/yv9 1- yitude of the electric field at the lomz 31tyyv9r g/,jaon-cation of the test charge?

  A 5.0-C charge is 10 m from a smal e1*w+hxl r*ejl test charge. What is the direction of the electric *j*1+lhxee rwfield?

  A 5.0-C charge is 10 m from a small test charge. What is the-mleng(c 7a2 e magnitude of the force experienced by a 1.0 nC charge placed at the 2ec nge7lm (-alocation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancxipx: ir8-hd s 6n-gac. :cse/e of 4.0 m. What is the electric field at a pointe di6- h-ir spcaxx: .:/ncg8s midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a :nf)l:vs h. zimeter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiv sli.nfh: )z:eld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a jw0vdu1cpx5 euujh4pc7; 3:kmeter stick and a -4.0 mC charge is plk5 u u:;1cwu7dj 0vche 4xp3jpaced at the 50 cm mark. At what 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 /*cmdvm gi)0w.g9zhr placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the po/gmh *g mi )wv.z9r0cdint midway between them?

  Three 3.0 mC charges are at the three corners of a squar6/e/a 6pc.avb jx8t0 kdipn2.6as vfbe of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thvj .d8aa6xsep/vb .0/2pc6banitf 6k e center of the square.

  Consider a square which is 1.0 m on a side.8p8mt+nnt / ysi-sl9b Charges are placed at the corners of the squa8+sls/b 9nt-tyimpn 8 re 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 orh+kzfc ; ew.be*b -b4f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric f*e bb ;.fzk4w+cbr he-ield?

  A particle with a chargeasah ko,jo -)zj+bs,3 of 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 s)i cy;qoab+ 38l+wn l0.120 g is placed in an electric field of 6000 N/C pointing downwa y+l; s3albnc8o)q+ wird. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.1509nif zxl a.;l55*o/wthtiv1 b g carries 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 direct xtf 1lw*no9av5ibhi/z.;lt 5ion of the electric field?

  A metal sphere of radius 10 cm xtdrfps;no 5cwm 56 )8carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sx wdt ;fpoms8)crn565phere's surface?

  A metal sphere of radius 2ql6 nfo55b a7f*m:ffyh mtss*yr2* 7s .0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center7sr* fam*y 65 ffssy2h*:m5tfnl7 o qb of the sphere?