State the law of conservation of el 9xmwhpm7 76qgoa i8;x;k f0c6 y(jbaqf9ce9mectric charge.

  Is it possible for two negatqn62,tlqm- 0u*cr c tmive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othep -n/pkuv fyx/p85jb2r?

  A glass rod is rubbed with a piece of silfu/ jhrd4n;q5s-id6wo ; pjy 2k. During the process the glass rod acquires a positq; u2 p/dj;6wshniyf ord4-j 5ive charge and the silk

  A proton carries a

  The model of the atojsd mb3 0j9qi+m shows a

  A neutral atom always ha:v9tw 3p1tu 3 uzeru8h)c aa.os

  An atom has more elep.4ki/*ohtn;k4o(iwc b p zp1 sd2s a4ctrons than protons. The atom is

  Materials in which the electrons are boun.lvn,i5 aj04r zdmz k4d very tightly to the nuclei are referred iz 4,4a l.5dkjrmznv 0to as

  Materials in which the electrons are bound very loosely to thkv,.e8 1d pn9usi hi9he nuclei and can move about freely within the material are nshie89dhk91,vi u p.referred to as

  A negatively charged rod is brou-u c;+thxaj( xs:v *0 mez,utcght near one end of an uncharged metal bar. The end of the metal bar farthest from the vcs(xhu0 t:m ze*c -+,xatj;ucharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placm(jtg(m;rvky+ sfr-uz+x:- mg*o5 yted near each other on an insulated table. Sphere B is briefly touched with a wire that is gr+tvfm-:5g+kjsmr-*mr g zx y yt((o;u ounded. Which statement is correct?

  How can a negatively chargefhwfc9j0ie7gppq/0 1 ope, f8d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively char hjp.oe9id2m;r w5- isged glass rod. The electrw o 25i9d; -m.rpejshioscope

  An originally neutral electros:-o vo m glilznl;y0*al;(l9xcope is grounded briefly while a positively chargel yi9*:na( 0oo zvllllg;mx-;d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object tou z3/u r 9jg99l 82ov2or/uahe,wff bcmches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does nojlc fam9 ueoorv w9289b ,/rhzg/f3u2t touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrcyz4 la8h6g; jywr ;yan77, fwal 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 ba4ayyfnj;8cw a,;gzy7r 76l whll, 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 omn a4hl:p.p8ldc - ym.6ev+ebf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects arenx2ixsk/dr)s0a.vb w z8*z ,o separated by a distance d. The first charge is larger in magnitude than the zsxnw b2k)8r0 ,di /.a zo*xsvsecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedo9ap*qe v bc(528 adjh near each other on an insulated table. Which statement best de(*8ah2qe o d c5vbpj9ascribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges bz1-d7 rafotlojnci413 9b6/magbl: on both objects are doubled with no changed1lafg: i/rnmbbt63 bcz-4 7 a1jl oo9 in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrad416/subi lt0 o6is qrctive forces of F on each other1u/ 0 tq6diro bsl4i6s. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects uyu9 fye7d0ewyd3u8dzb).i3 attract each other with a force F. What happens to the force between them if one charge iy83d)9 buue7uyf 0.w ezd3y dis doubled, the 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 distan7ct ucnr26pj(igd* x.ce of 1.0 m. What happens to the magnitude of ixctn6p gud j7*c(2 .rthe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1 m +nep8qc9,.jb(bvyps5-vg1p3 os3xwa- lck.0 m. What happens to the magnitude of the force on tv5p.lvk-pq8c19+ ms( w s ,a jbbcye3pog3x- nhe first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.h7lrf1q+.9bap b(t favcnq 7: g+i)rw 0 m. What happens to the size of t w:7c7g+fvr(q)b.fta p1lrq n+ah i9b he force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plaboxpv)f76 kz0o j bw*f.r-; hwced 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 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 positivezkpx.b- wf;o7jbv*r6)wof 0 h charge at the center of the square?

  A point charge of +Q is placed at the ces/ xy1wc.b+u hntroid 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 of the force that acts on the center . ux 1cb/w+hyscharge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vects9 o1p9j6nhb2 lu2amp or?

  At twice the distance from a point charge, the strengthx (crh ,7 uw,3c;zlyxf of the electric field

  Is it possible to have a zero elel,r90c hwma-l ctric field value between a negative and positive charge along the line joining the two chh9l0c wl,-mraarges?

  Is it possible to have a zero electric fielv.mymw67jxvg mu-- sa + 4t/qwd value between two positive charges along smyxuw76 .-- /vmg4qvtam j w+the line joining the two charges?

  Electric field lines near psitive point charge( flmrk7j g(z 5s8nt;zs

  The electric field s3 . gflhu*6q:lo76xwwbnn-4 8b yzxrrhown

  Can electric field lines ant2u(2z qog ag)- /vmintersect in free space?

  A solid block of metal in electrostatic equilibrium fi-* ;h3mci:s 1l qdp4xd -ualis placed in a uniform electric field. Give a statement concerning the electric field in the block's interifl-*qadp-uis;14 c l hmx3:dior.

  If a solid metal sphere and a hollow metal )sm2hqqgydr/ bo*vwp 0e3 8: wpw1mm+ sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and t3:qwvo2prm)/0my qwbs wg1hm +dp e*8 he surface is

  A cubic block of aluminum rests on a )gq2 ,z:i(r. hntjyv rwooden table in a region where a uniform electric fielr iztn g,rh2jq v()y.:d is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriumomf.zs 2t4 b39da8 /hrd.2 lcuni2phv near an electric charge

  A positive point charge ;00 j4kvss qv6.yhr1:hfiuujis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directv.sf k1;46y vsu:qhijh 0j r0uly above the hollow sphere has

State three properties of condyl)x,:(n 3h*kryzahi3z:9 h/x ztwrpuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron lldj3m)t.1y4u-lvhmis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net 2 i9e*tr0h4 vuk g;srqcharge of +2.00 mC. How many more protons than electrons does te u i4kqrs2*h0rtvg 9;his piece of plastic have?

  What is the charge onv6eut+yod 2ml 8ir/53off v9c 1 kg of protons?

  An atomic nucleus has a char2 *dow a;u23gg1szkrjge 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 -4.01x607sgb wn6e3 vg xqg*v bn .rgdw:j0 mC, respectively. What is thex. nvvgeqww nsbr07g*: xd gjg6136 b0 magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1u nb k-8,fy;qm nk:2oc.0 N. What is the magnitu,mqu ycn 82-n; b:kfkode of the second charge?

  Two 1.0-C charges have a force eumm3:jkw dw6:3ijc7 between them of 1.0 N. How far apart are they?

  The force between a z ))w20;j4ogwky czj g$30 \; mC$ 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 th km4van0.: qviey are moved to:n q kvvi0am.4 a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0wtm) n4*butlm /-,eq tw;hb4st8 4efi 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-4,utbwf8 hms;e ln*/q tetbt mi44w) 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 placed on the x-axis. A charge ofa5h(7-admc o t +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 electr( 7haa5do- tcmostatic force which acts on the charge at the origin?

  Three point charges are located at the following pi-f.zxoqcm 3 3b ds-6y3ktnl/ositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x t of3 lq-3-y/nm dz6 xskic.3b= -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 yy p )2a wv+r/94s h:d9dafgldof a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic forcsd+f:ld ayw)g2 v4h/ dpyr99a e 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3/1 6z/.wfmw7crzr 8edd ggkz +.cdag0 = 5.0 nC is at (0, 0). What is the magnc.zkgz.8fwc/g6 dg /1e0 z7 da rdm+writude 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); Q3 = 5.0 nC is 0xep v ;o)merps55l)2ljkb ypg 8- jc+at (0, 0)xkg5peype rs 5ovm; 2)8 l )ljb0jp-+c. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertic0h ce03qkii+i +xwtm+es of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whih i qcktim+ 0+x+0w3eich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what povd j.*+kc-a m2)kgd7olj 1h ooint, on a l.md jo hc 1l)-ovkgdjko7a+2*ine between 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 +9udud bsk,o7n ffu7 -6afptc)kc0s94 5.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it7uf5,ak)tpsbccu9fd- 46s7dfn u ok 0 is zero?

  Charge +2q is placed at the origin and charge -q6mdjt5s t wk*,9anzp0 is placed at x = 2a. Where can a third positive charge +5sz jmp d*kt6wa ,90ntq be placed so that the force on it is zero?

  A copper penny has a ( l, +6a6xej-8pd+rqnfbmivn mass 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 forcl,a/l a 5kd;vae of gravity by the attraction of a fixed proton some distance above it. How far a/alkl d ,;va5above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondgnvbz .phe9qv bkn1k 6-4cl(5py)-h oucting threads which are 30 cm lok1.hh )(k9p eb6 cn-z4gyvl5qvp b-nong. 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 cha)10e ii ebdfvk 4*u wr 4y,zs+t6zv,porge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from theyd,wk)oi+ 1vi46u, ztp4 0vb*ee rz fs nucleus?

  What are the magnitude and direction of0 *0xux e +z)ztmy3nq3i84mao1 u zhon the electric field at a distance of 1.50 m from a 50.0oh 4*x 1en ymz0 in8 +uom3)zut0azxq3-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituti/ f b2f7pi 31bbt)igde of the electric field at the location of the test 2g )ip bbti/31 ft7fbicharge?

  A 5.0-C charge is 10 m from a small test char-8u s ;kx-)tkwd ylra0ge. What is the direction of the electric fieldlrkt uw --0axs)8 ;ykd?

  A 5.0-C charge is 10 m from a sma uulbe;w(7y4jll test charge. What is the magnitude of the for4w(bu7ju;e ylce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a4fd94u-g uyb 4pq(rph fc2tz8 value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field atp9y td4g 4u-q(8 cu4bfhzr2f p a point midway between the two charges?

  A 5.0-mC charge is placed at the94j) e lil* khah3;giz 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the9 g3hia4h);*izlj lke 30 cm mark?

  A 5.0-mC charge is placed ac7xc s bh 8dno;u.(t)kt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 d7boc xht8.)s;c ( unkcm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 p w/3eq.3u qz8bi.xph,4d hwbk1(hhumC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field atu/bhz3.w1ph3d,kx.eqh qhpu (ib4w 8 the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T ajsd +n/u(qc 2j8xl.qhe last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sq+jcx l(nd8/u ja2 .qsquare.

  Consider a square whicpzm jh4.pj5 ;njd)6pol4n /mb h is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4;.dmj nhbj z6o5j)p4lpm/p4n.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 ploj6 +;4g;xe ouryq;rzaced in a uniform electric field. What is the magnitude of thi 6rux ; oy4ze;qjo;+rgs electric field?

  A particle with a charge of 4.0 mC has a mass op bxr+hru iblux-1gs ,9 arf2g 8y*8.ef $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g-(i j(zngc(wf is placed in an electric field of 6000 N/C pointing downward. What charge m z g(n(-wcij(fust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -ce)v 2 rtg+sysn: dh*/2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the t:c 2*nv/yhr)se+sg dforce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn2 g.jkii7syg6*)ej7brdyj 56hy/b h n itude o y/r6 bhdk.hjg n 6iey2igs7)j*5yb j7f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieste.h)l4d21 7wc, sl)k p,a xwewni2es a charge of 3.0 mC. What is the electric field 6.0 cm frexh ),lka l2ewt )2pwecw s7,1d ns4i.om the center of the sphere?