State the law of conserv bu q(8gbj7wg2a0oh-gation of electric charge.

  Is it possible for two negative charges to attract each otsuug(d0l .y z0her?

  Is it possible for a positive and a nv8-tmx znn k4j .y.javt9 3tlul1,xk4egative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the 2 )r7p:p vl3dao dgib;glass rod acquires aar bd2;vpd:o 7)il3pg positive charge and the silk

  A proton carries a

  The model of the atom showsp1;a,l5 m r6yeyz*ykho, ch ov4ne*.i;c 3 nty a

  A neutral atom always haswb(91bbgqvn*5k;s yokk 0g;v

  An atom has more electrons than protons. jz4 rqh7n0hur4,o zz s48epcg c -1o7sThe atom is

  Materials in which the electronguql9h x(81cxyfui ip0 he t:fzk;)53s are bound very tightly to the nuclei are referred to as8 9exl;g5u xhki q)3p c hiz0yf:(tf1u

  Materials in which the electrons are bound very loosely to the nuclei and can m, pb0rnvzz6t (f5pf5xetu 4l0 ove about freely withif vu5pf 06eb0ztx(5p,zrtnl4 n the material are referred to as

  A negatively charged rod ingzkwi590qb tj :/sb2e+mp:2wru2exs brought near one end of an uncharged metal bar. The end o m2tebxznr95/ w b 2ewpq0:isu g:j+2kf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positivew+/e pzmw0;vy charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly tom; 0p +wvyezw/uched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pofnth h;p+dny a6 r8h*.sitively?

  An originally neutral electroscope is briefly touched with a po7g) ay cpo2d o,qtl96ysitively charged glag q ,6ly)t2oa97podyc ss rod. The electroscope

  An originally neutralftlghu 3nrc -:d uyw5.5k6w rz5eh +r0 electroscope is grounded briefly while a positively charged glass rod is held near it. After ur wk5t:3-h+cg u.y hd5w ef65r0lzrnthe glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leau,ea. 3qtlv0uxmwwp 3zg- 2j2ves separate. Then a negative object is brought near the electroscope,ua .3e2qx3t2j -wm,ul v0pwgz but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on cd*r;ph cx hn ukr*hmw0404l( zbkd7 a:p/xq1an 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 stc0 p ;n*r*( 4zhq1b dhl:c4rkupxwx07ah /kd mops. 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 Coulomb constanwy5pua3/wz ;o+k p* dct $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first 4mu k . n)kcdkg-a,y7bcharge is larger in magnitude than the 4na,km. ukyg -)7kcbd second charge.

  Sphere A carries a net charge an81*pqms eus(ed+ /9ux uqwrj*1in; i kd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the pj(u;nsur*8eiue9 1w + sk1/ imqqxd *electrostatic force between them?

  Two charged objects attract each other wte(yo( 6+ ts2em:vxmaith a certain force. If the charges on both objects are doubled with no change in separation, the force bett (ya6ms (o:emetx2+vween them

  Two charges are separated by a distance d and eaa9(0 sy+/wm7cga-iog 8mgpt xert mutual attractive forces of F on eagyo sa7m+c0-9a8 p(gamt/ giw ch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eh9/ z*ubae 53tgcb5 rnach 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 tou55 ebb nagz*/h9 ct3r 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. kd,(b :q, wsejWhat happens to the magnitude of the force on the proton if a second electron is placed next to the first es:ekb ,j,d(wq lectron?

  An electron and a proton are sepa3cw0 ucn.ndd 0rated by a distance of 1.0 m. What happens to .ddwu03nncc0 the magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton 8u./ ;e zruo2q*tpxyz3ahz(5jq4 v uoare separated by a distance of 1.0 m. What happens to the size of the force on the proton h uuvx2(tzoza;r5zu *.3y/op eq4 8q jif the electron is moved 0.50 m closer to the proton?

  A point charge of +Q0dnl--ob(7+ 9f9b lomlssdywfl /nk5 is placed at the 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 mosf 9lnbdl7/bw+5y9- n sd okf-( 0llN 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangwbdza:; y r1cej3b/ +tqu9y,lle. When a second charge of +Q ezyly1/dr;cq93 b ,b:jt+awuis placed 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 h*ijm;4 2kkmj not a vector?

  At twice the distance from a point charge, the strength of the electric ff sqe7q .m-g)q ;, oya.boq1kmield

  Is it possible to have a zero electric field value between a negaticyw53kfc0vi gk*0.g6z m 3 bucve and positive charge alo*cbk 0653cvwg3mk.g0u zif ycng the line joining the two charges?

  Is it possible to have a zero electric field value betweek2im4 jae gf c yxn2s2.p:: l88i,ldcyn two positive charges along the line joining the two charxf 4ipk s.njcg2 y8i2c,elyda82ml:: ges?

  Electric field lines near psitive point charges)jhxv)by n29q

  The electric field s :qe3emvz:pg ) lmm4lt4nnv ::hown

  Can electric field lines intersect inm g uslb7j(57oz mb(h9 free space?

  A solid block of metal in electrostatic equilibrium is placed sb *q +uh;lw4vin a uniform electric fie4qs+bul v ;*whld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equslm+ istlhf1, h +0g ,cj;pxz.al diameters are each given the same charge, the electric field (E) midway betwt1i, ,p+;l0f lzxgh +ssmh. jceen the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uni)zt3g/z ) 17 kflmkkc,q ra;gp4 yjai6form electric field is directed straight upward. What can be said concerning the charge on thepjz7g qm;)1kyac/rik6t g ),fzka l34 block's top surface?

  If a conductor is in electros4v2e5e ,.1x )j/e tyy+d twrbcdze-obtatic equilibrium near an electric charge

  A positive point charge is enc7r c e;kvv75s( ;fsxe4vjw ow4losed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere,jw(sw75f4ovrvk4;; vex sec7 the electric field at a point directly above the hollow sphere has

State three properties of conductors ino:5vlq4o4uc7n w tma- static equilibrium.

State Gauss's law.

  The charge carried by one electron is-:yma5e) a a*nbvcf *vmag7r1 $e = -1.6 \times 10^{-19} \; C$. 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 protons thancb5k.8a9gd;ixprwb gl(2b *p electrons does thi 2ggk *lw8;bpdr 9cb.ip5 xa(bs piece of plastic have?

  What is the charge on 1 kg of protons?wp(llk+,w ; 9d:l+ubzs ue/mj

  An atomic nucleus has a chargy e6w2f5kyvcz 61 :pple 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, n:xc(lf-gv eqtx*p 07have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thqt0 * gxp- (l7vn:cfexe electric force between them?

  A 1.0-C charge is 15 m from a secondd-tonduf )f*(fg5a, f charge, and the force between them is 1.0 N. What is t5td*u(,gfn- a f d)offhe magnitude of the second charge?

  Two 1.0-C charges have a force betwewcf:;jv wv(o- 5l e:cken them of 1.0 N. How far apart are they?

  The force between a )ew/iyq3q+jf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar oyuktfv+x x- s.+ae:6t, experience a 1.0-N force. If they are moved to a new separatioxo. ksvyfueta-x++ : 6n 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. The first c9ypa; jwwfa2cb7b4 gc6/lb61/bs pte harge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. What arebgwj 691b2a l6wt7fb/ 4;apcyb cp/se the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed p vcxz5a*gct3 q q172von the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C toc vt*2zqxv3q5p acg7 1 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 origin?

  Three point charges are located at the followi in57ni*nid4w 9cvg*png positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; n 5n i*p7 nc*9idgvw4iQ3 = -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 a second pp:7vk5 3q j3g 9omekiloint 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 j p:3 qlk v3ki7go59mea 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 is at (0, 0.10 m); Q3 td;j bc19bl* 8 hnmn4o vcawpi-0z/m: = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charg i vn4ph-nbd8*l jbt91 zocm :/wac;m0e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC7l n2jsgs f +.zkljk7, is at (0, 0). What is the direction of thj+7n.s 7,2zjf lgklk se net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilai8r3pwbf w(b s8 *;x st,m)hehteral triangle which measures 30 cm on a side. What is the magnitude of the electrost (i8xwtsbfm )p8;sb rh w,3h*eatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.sir7z: ie6to 7+rr 7zv0 m. At what point, on a line between the two chargezte7s7 zrr+ioiv7: 6rs, 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 +9.0-C charge is at x = 4s s/:fapxal 42sbrt21.0 m. Where on a 2sp/srx14aslt:b2 fthe x-axis 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 placeayw d 4 x:.kqs(6g )iioka.wa2d at x = 2a. Where can a third positive charge +q bei (q.).kgakx6wyd42wia os:a placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. yy;*pwz+xqf.wv g z2 j3uoi -0A 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 force4toao0yvu us, t mmu7t270v2 m of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pr2oy7v vt7msau 0uou20t4, m tmoton?

  Two 0.20-g metal spheres are hung from a common point by noncondum: h(hyps -teo6;m+tcgqd* 3w cting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads i:;wht+ h3 *mc dqtygpsm(-e6 os $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4)4h,zt b dfq;4: mphui/)zdxo0e. What is the magnitude of the electric field at a distance of 1.0 m from the nui44qdd bfu mz txpo,h:z) ;/h)cleus?

  What are the magnitude and direction of the l4q9j)7 qflytelectric field at a distance of 1.50 m from a 50.0-nC )79lljyq4q ft charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of jfiio6f2z z .;the electric field ato6 .z2zijf if; the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the5qz1 r:d.niy7e. o.cmrk3r)m 2nwwh t electric field?roy:d k wn wrc52ri. m.1m.ez7 q3)nht

  A 5.0-C charge is 10 m fr9tt o7vkej;k +om a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of +t9ej; tovkk7 the test charge?

  Two point charges each have a value of 3.0 C and are u icc)*i ug qmyy+v j)n6he3c .xnqt-i 3-w1,fseparated by a distance of 4.0 m. What is the electric fieu))u+q-3-ciiy ty,fmnxv*3hjic1wg6cn .e qld at a point midway between the two charges?

  A 5.0-mC charge is pl culxnx vz*t/*zht.o;h*-y w8.8vpn taced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm-u8clnxop**xt*./t; zhnvvt8w . z h y mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm advvk) 456u4dzs+wfoy l3 2thvg5 o. nmark 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 5ao4+fd k .lv )25gzwt3 vs4h n6doyuvcharges is the electric field zero?

  Two point charges of +3y-hsunzzn 11 8.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the mau-1nz 8ysz n1hgnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o5uvp/vfn)mrg x/u( v2i *q 8hpf side 0.50 m. The last corner is occupied by a -3.0*m/2(u pnfv u v5rqgxp8 iv/h) mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m o3xnhv r ;p(+wtn a side. Charges are 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); xh(w+pr3 tvn; -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.3o1 .yyo(eo6qy *smhzbk)- /acxxkr 5.0 mC when it is placed in a uniform electric field. What is the magnitude of okx (h syzyr3co. o6/. xqbem)ay1* -kthis electric field?

  A particle with a charge of 4.0 mC has a mass of pvwm +r35 u 2hxifj1/i$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in ae jfinf i+7y-1n electric field of 6000 N/C pointing downward. What chargf iij7n1 y+ef-e must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.0:zg gb 4;hy 96onyjy(k0 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the b9nh6(;k:4gyjzy yg o electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is .f-7hvo7;ok dnaomu7 the magnitude of the electric field 5.0 cm from the spherehnvof o7udmaok 7 7.;-'s surface?

  A metal sphere of radius 2.0 cm carriezvo m2cfy6d4 (qq dm9-s a charge of 3.0 mC. What is the electric field 6.0 cm from the c2z( oqfy6m9dvmq -c4d enter of the sphere?