State the law of conservation of electr.ossj46ju w 0jt3g-rsdi,9icic charge.

  Is it possible for two fx9elh +v u4 )xyeiia0*ci2v.4odbl9 negative charges to attract each other?

  Is it possible for a positive and addc *d/ef0o6t negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod)dk(fm p( qbq) acquires a positive chargem fkqp)q()(bd and the silk

  A proton carries a

  The model of the atom shows a6z(pf wcc3t2jn7mnx ;

  A neutral atom alwaysd (itanlz7j 7lj 2(ge5 has

  An atom has more electrons than protons. The z;h y4rkn9ho..ke(isatom is

  Materials in which the tm44q 2 pub4xdelectrons are bound very tightly to the nuclei are referred to am4xq2d44b tpu s

  Materials in which the electrons are bound very loosely to xsinls;j, z,q6z8vl -the nuclei and can move about freely within the material are referred n 8sljs;6zv ,qix-lz,to as

  A negatively charged rod is brought near one end of an uncharged metal uun(w4 +fe : iz ( ox.jppgysxbg95n5oaqt/9,bar. The end of the metal bar farthest from the chargeasp9g. (egy(:bpj,oxt 4uo xzw+5 9qui fn/n5d rod will be charged

  Sphere A carries a net pof:im2b rlgsy0 l8*7mv gdta1 1sitive 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 27g8g fvat srbi1y0 :mlldm 1*is grounded. Which statement is correct?

  How can a negatively charged rod chargahb. d 0allj4 s9ye;q4e an electroscope positively?

  An originally neutral electroscope is briefly touched with a pos3ep o1;hu mcxg2efr3 ,itively charged glass rod. The e h3 exrc,3mgf21 pu;oelectroscope

  An originally neutral electroscope is grounded briefly while a positivejsc0wqb3 jg,tg4+h e(ly charged glass rod is held near it. After the glass rod is removew40g, jthcq3( e sbjg+d, the electroscope

  A positive object touches a neutral electrosc ,inbwt y7mlnyu h+ +: 7c0aita:eqj,.ope, and the leaves separate. Then7+t qi.m:aj0nie,yhcy twbu+lan: , 7 a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tablv 9w zs mqc*70ojcptdf 8171pae. 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 rp7qm 9 ofs7wczv1a8dc0 p t*1jolls 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 theej tvfu hq4h+( qo/+b..c i)4 fuxtut; Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first d x yv4lg+p6rf6 +gh iorq+7en:ar;,ocharge is larger in meo4+ qr 6 6 gg:oxf;ryhvn+aldp +ri,7agnitude than the second charge.

  Sphere A carries a net c+z l ;re6fc.gi vaabdr3dt5j..s hp32harge and sphere B is neutral. They are placed near each other on an insulated table. Which stat d.gjad5r 2h.f;pa bts36l. zcie+r3vement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for+(+cocr7o m,i ok dcx)ce. If the charges on both objects are doubled wi7+or( +md icxo,kcoc)th no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of igyvev-qj .ta :*ugze ;p46 -bF on each other. If the charges are separated by a distance of d/3, what are the new mutual fvig*j-6e:4.yzvu;pba - geq torces?

  Two charged objects attract each other with a force F. What happens to the 4+l2l 4 xh9 ejpwo2/ndpt oa+lforce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-oo tp dh4l+2l+e9wan 2p4jxl/ fourth its original value? The force is now equal to

  An electron and a proton are separated by a w 1ua c(8yju+wdistance of 1.0 m. What happens to the magnitude of the force on th1wujwayc8(+u e proton if a second electron is placed next to the first electron?

  An electron and a proton are seh7-v.jbmwjyb (qm 09 lparated by a distance of 1.0 m. What happens to the my.7m mv qj -w9(0hbjlbagnitude 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. What happens t(yx vc 3n 2 7ac6fx*mtnsgw+q+o the size of the force on the proton if the electron is moved 0.502tcma (cq +yg7sxw x6nv*+nf3 m closer to the proton?

  A point charge of +Q is placed at the cw/z;(:5vl y lfe +cbcpenter 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 placed at the other three corners of the square. 5 wzlc y:lf/v e(c;+pbWhat 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 centroid of an equilateral triangle. 1 m7zjwpvg.b4 a pd9x17 z. xz/xfzy3fWhen 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 magnitudx.p371.z 7 4f9zf1wyzgbpavdz/jx xme 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 vecto vbm e /+-nzl0sibov,3r?

  At twice the distance from a point charge,+40x pzuvvi d bau;)i) the strength of the electric field

  Is it possible to have a zero electric field value between 00wbcy*qwkqd)34hl g a negative and positive charge along the line joining the two ch 34 b* cylwqk)qwdh0g0arges?

  Is it possible to have a zero electric field value between two positivc:za;g ) jpjf0a1kyg8 -njb c8e charges along the line joining the two c)fc0j8 a b cy:g1pjnga8k -j;zharges?

  Electric field lines near psitive point ch* ld7sip,+mq w uds)q;arges

  The electric field sho n. mtvk:.lj23k9 *namx.erwiwn

  Can electric field lines intersect in qki7u(0eki:u gsw1 )8 vuh( wbfree space?

  A solid block of metal in electrostatic equilibrium is placelv17, n:ms k(;i boaakur1,nqd in a uniform electric field. Give a statement co qaaokimlbnksr v7un11,,:;( ncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are 3ef.au)r fc- zeach given the same charge, the electric field (E) midway between te-.c3aff ur) zhe center and the surface is

  A cubic block of aluminum rests on a wooden table in a regionrkq1mcv t:a c/zdp,7: mr)l /t where a uniform electric field is directed straight upward.a1:/m)7m q,pktc/l d:zrtr vc What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near,m+t 0c;sa metq*5sest6 ipv. an electric charge

  A positive point charge is enclosed in a hollow meri71 s,mtsdrf i n4+.stallic sphere that is grounded. As compared to the case without the hollow sphereismns4i7d tf,r 1s +r., the electric field at a point directly above the hollow sphere has

State three properties fr:08i+p +0g chabovr of conductors in static equilibrium.

State Gauss's law.

  The charge carried by 29t-ec5kc8jqvv i-le one 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 . s4z:6wibx7c qtfasu47s t *nnet charge of +2.00 mC. How many more protons than electrons does thisnfzs44xc7 .itu7a q:sbs*w6 t piece of plastic have?

  What is the charge on 1 kg of (/rhzde1h1ru1 n( lquprotons?

  An atomic nucleus has :u2k9q*ak4-cf4 kv ulip2iny 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 ny1a-bnatdjsr .c/ .oin2+9 pof 2.0 and -4.0 mC, respectively. What is the magnitude of the electn.pj9dyan/s r2anb i. +-o tc1ric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 bo *bj5- rmyig3 g-,omNg-mbbrmgyj,5 o3o-i *. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them nwt /j0m1gh*x;cdydnn + j(j3of 1.0 N. How far apart are they?

  The force between a qe)s bp1xj6. 6+8h pxanjn/ix$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyk1aie)a m :p+(ribekeq16/k q 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separ bii 1m p1a:eekq6+k)q (/kaeration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on tro.tt d-e(hbt e kv(zk bi1(,3he 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 whdk i(rebztvb.teho-3t( k, 1 (ich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge .l q-2 n, csndi h.uc:t-*ozkqof +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5,i*l2c:ckqqhn ndou- t.zs. -0 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 follo4ni/0ttnm dt x/:,n :0wift8 n tmtfti8m-ez, wing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at e i0:tmf4tnn/tn nixt/m w-t,f 8:zm 8i ,0dttx = 0; Q3 = -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 ab /poh z21 tr f*0ph/h* 4p(fwbix:rjvt the center 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 at the lower-left cornevw *( pzh1bb0* frp //x42f:jirpohh tr?

  Q1 = 6.0 nC is at (0.30 m, 0);) n0sf1drhli*6h2 a zs 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 nC charge01 nf6lzr *hias2dhs )?

  Q1 = 6.0 nC is at (0.3ylqylk+:erzw oz m :-6k z)+-y0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction o +zl-): k z+rz6k-:wyyoleqymf the net force on the 5.0 nC charge?

  Three identical charges of 3r)n(qxh mwv*- .0 mC are placed at the vertices of an equilateral triangle which measures 30 cm o-mwqxv () hnr*n 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 3.0 m. At what q0 f w0nj93onww+6icxpoint, on a line between the two charges, would itc wwq+xw0 oin 9nf0j63 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 ag /tmqn ( d2,uwtv(5smd y1us(nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chargmt gdvd(ywqs1u /n5((,usmt 2e be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at)bj q9t fan;q: x = 2a. Where can a third positive chargeqj) fbt9;a n:q +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totio ;flih6g 0h7mt0 2;(ubgy1yl x.qkfal 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 ujf1ax0+g q6 gzp against the force of gravity by the attraction of a fixed protonjzf6x+g1gq 0a some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondswh s7uma :w-5j;dilw w i.+k7ucting threads which 5imsaww l7wisk -7w. dj+u:h;are 30 cm long. Both are given identical charges, 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;v-t dksv lo+3 9s6tci is the magnitude of the electric field at a distance of 1.0 mitss-+cd; v3l6kovt 9 from the nucleus?

  What are the magnitude and direction of the electric field at a distance 8fl) zsbh7pvx0 -h;ibof 1.50 m from a 50.0fpv)7h b ; lb8zxh0i-s-nC charge?

  A 5.0-C charge is 10 m *sl 2i). xi2m(*am rqsqsjmr2 from a small test charge. What is the magnitude of the electric field at the locasma2l js m i.i2s* *qrx2rmq()tion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wha6i ywrxs0,0 fkat)j- st is the direction of the elwr si0x)s,a60k-fyt jectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th4(9sp qmm e 1ji4i2nyse force experim4s(iyq 1mep9 jisn24enced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3/f ulz /qfn+(f.0 C and are separated by a distance of 4.0/fzq (+l /ufnf m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 n9tq s8c:onv, cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elecvcs :oq8n9tn ,tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chag1v/*vm 6m3:yv0y(ym qzuskyrge is placed at the 50 cm mark. At wha myyg 6qvu31(zskymy:0mv v/*t 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 pl2w61(azj5-1(e h pjrvx lxwkmaced at x = 0 and x = 0.20 m. What is thh( 1r6-j1zkwamx 2p5e xjwlv(e magnitude 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 oaqf;m-. p.h;qwhb+ f 0.50 m. The last corner is occupied by -f fh.o. wqp+a;mhqb ;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 are placed at the 9z.(uju wy-w wcorners of the square as follows: +4.0 mC at (0, 0);-zw( 9 .uwyujw +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 ymhc,wegb9x 97i6am*b5oqg1gvex (2it is placed in a uniform electric field. What is the magnitude of this electric7ig gbm,m5 gq e269oahxbe( xwc 9*vy1 field?

  A particle with a charge of 4.0 mC has a mass o2oj 7 .pyc :rr0xmh/nzf $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of masz8v)zis c- hdt3z.lg umz(+ )ps 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge(p)gvczu+hts-i8z)l 3.zm z d must 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 bafa 0 zjt0f-x*ew1u34 ,kdvxsdll is placed inside a uniform electric field, and is suspended against the force of gravity. What are tf,3wzfddv*u0e4k x1s-j xta 0he magnitude and direction of the electric field?

  A metal sphere of radius1:ttbqnp)pz o71-sr / ;vjqfmm w, )cl 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thepq/ msf t, 7pzocrl tv1q;)b)1wmj: -n sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is therq( vq3zs- 8 ;8xg1px,upei+t otv,wa electric field 6.0 cm from the center s8xi-qxp(pt 8,; v3 g roav1e+zqw, tuof the sphere?