State the law of conservation of electric cha ppc+.) v(1eunocn,z1rk ork7 rge.

  Is it possible for two negative chaf q)nlrl: e2y);uaur;rges to attract each other?

  Is it possible for a positive and a negative charge to attract each dqafvb;f ij2e2(ib82 other?

  A glass rod is rubbed with a piecev:y *tny*iv ;o of silk. During the process the glass rod acquires a positive charge and t ;yoy *tv*vn:ihe silk

  A proton carries a

  The model of the atomq zrf;5uv 1:pf shows a

  A neutral atom always has8 qwkwx iso9u3 g09lgzpwwf88,64qw z

  An atom has more electrons 2, )cha(qvl z0l xsfi7than protons. The atom is

  Materials in which the electrons are bound 8c(. yjgh8e(odu3jo . l.fbp.k,zogrvery tightly to the nuclei are referred to o3(gh d.y .8bu8 ojgz. ,ejp(cfrlo k.as

  Materials in which the electrons are bound very loosely to the nuclei and can mo l;*rwsi;yk2aa9rahf , yru4; ve about freely within the material are referred toay*4 2ha9;r is; r ,fk;urlyaw as

  A negatively charged rod is brought near one sf(;3g gx9 uky, q7bu:ua21 kddjx j;tend of an uncharged metal bar. The end of the , 7 xg gbj2j k;k:f; tysuu3aud1qd(9xmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl(rq:gu)c: zoa aced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stz ::( u)corqagatement is correct?

  How can a negatively charged rod charge an electroscope positivekiygdbz 5cl) 6fr (v22i 7)8zsfd wln/ly?

  An originally neutral electroscope is briefly touched with a positj4 allba 4l/u,ively charged glass rola44ja b/lul,d. The electroscope

  An originally neutral electroscope is grounn9)is)qu) )tazvkb ,hded briefly while a positively charged glass rod is helh)t,9qs uk)nabi)) z vd near it. After the glass rod is removed, the electroscope

  A positive object touches a neut+ uyrcrr; /vl yop-)t4ral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to th)lpro/rt;uyyr 4cv -+ e leaves?

  A large negatively char oy, nvoql )t5jjm x7-*w)ow-vged object is placed on 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 mv5o7ol -)j)yvw*n,qxoj-wt ball, 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 zc yctn3 3c9 h ax2-(tsh3lw2ithe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated bj1+z r fti o+z/5ft)rzy a distance d. The first charge is larger in magnitude than the secot1fij )zo5+zr rf/+ztnd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed i5:wx ,2zygf lpk/ 8lwnear each other on an insulated table. 2:5wz lfk wilxy,g/p8 Which statement best describes the electrostatic force between them?

  Two charged objects attrac4nvsbyy8*t9 wf ixfi fly,:+ 8t each other with a certain force. If the charges on both objects are doubled with no change in seibyf s48:fti 9*wnxl, y 8yvf+paration, the force between them

  Two charges are separated bybj 5luoc3j +-kadv:7j+oker;i*.w 0pxzfb: c a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are a o u+jo3f+ekcwxciv: .7:dzljb5 k-b pr0*;jthe new mutual forces?

  Two charged objects attract each kg 1w,gqi/*c7 j6ic5pv:xrm 4t gpv*hother 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 original value? Th,cq7ipv 6gmh*rciwjt / 54k:gvgx*p 1 e force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens to jzi:pzk/y40+jnm 2i)tti77ws ka3au an9;pg the magnitude of the force on the proton if a second electron is placed n2:nip93ki0t/m jg zwik 7n+j; aaats4u7 )pyz ext to the first electron?

  An electron and a proton are separated by a distance of 1.07ka6 ehics9) f m. What happens to the magnitude of the force on the f6eh fc7)isa9k irst electron if a second electron is placed next to the proton?

  An electron and a proton aresa2yb+ lg ,o0 r.uml+z separated by a distance of 1.0 m. What happens to th uyb++ar.zo0s2, lgml e size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a 2aj:/te fu,shn- l ju3second 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 t-,ats 2/:fujjlh 3unehe 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 trpb(8 on-v:kn4qd qq1riangle. When a second charge of +Q is placed at o-:41 8kb rp(do vqnnqqne 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 nk: e7 jsqd0w,not a vector?

  At twice the distance *5q1q gxacu: ct,mak* from a point charge, the strength of the electric field

  Is it possible to have a zero electric s4 cag;cek 1-fzw p3/.tu .ketfield value between a negative and positive charge along the line joinin cec w;aus1tt-fe.k3g4zk/.p g the two charges?

  Is it possible to have a zero electric field value b(qju ygffi/3v. l7 ;4t6*hobajz)u p, gca,vhetween two positive charges along vj.u,ohqga,fj6zfic)bp4tuh y*l 37/( ;vag the line joining the two charges?

  Electric field lines near 3zd 2b oi;nf.tpsitive point charges

  The electric field showntyjcp7 j4ro:y 4+rq /c

  Can electric field lines interse b ff.c5qkv.q:ct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a +4 1drji/oj hdid nj6*bn 7gag:49dn cuniform electric fiegc a :j*b6 /4h djddn7+gdjroi4n19inld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaclt lir e;b2nuu: u9jvh3pt979 h given the sat9bt lrn3e uh;u79 uijp :v2l9me charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden ta k eb5,04k p35j,raghjxbz*fvkc65 h rble in a region where a uniform electric field is directed straight, 5,brbvjhhjcr4g65k xpfkk*3 ze50a upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostaticyt. g2k ute84j equilibrium near an electric charge

  A positive point charge is enclosed inh p6 qnvfsmbh9gr34tq7i5 ,j)xag(+q a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abov jpqgt ,h36)h+xgai q q5fb4 mvn(rs79e the hollow sphere has

State three properties of conductors ini.jply gue:1t e 22-px static equilibrium.

State Gauss's law.

  The charge carried by one electr4sdc1k r6 v5cbon 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 hw s9a5vg0g 3aeas a net charge of +2.00 mC. How many more protons than electronsag059wva esg3 does this piece of plastic have?

  What is the charge on 1 kg of protonshb,fcm 32- ekh/ :sdyo?

  An atomic nucleus has a p s9( kwcs:(ischarge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sexjg1zs3okut -y;1 27n r4otdgparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude o14zydk-o 73utr1ns g ;jt2 gxof the electric force between them?

  A 1.0-C charge is 15 m from a second chhx(kw,+a**u fuy,pr darge, and the force between them is 1.0 N. What is the magnr+f x,d *(*uukwyh, apitude of the second charge?

  Two 1.0-C charges have a force between them of 1 phow4v w*/.m6s3ycqi.0 N. How far apart are they?

  The force between a vayvijo(gbr7d i1(; t951 cbx$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experie f ,sm1h(p2jxpnce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenhps fx, p2(1mj them?

  Three identical point charges of 2.0 mC ,59nxo+02a cqb hpxbj are placed on the x-axis. The first charge is at the origibn+xjc,bqh920x 5aop n, 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 which acts on the charge at the origin?

  Three point charges are placed on the x-axis *wod;wsb *2ix. A charge of +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 electrostatic force which acts on theib*o s w2xwd*; charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC agegn d /)e8am2t x = 1.00 m; Q2 = 3.00 mC 2e/eg 8gnad)m at x = 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 at the center of a squ 91l5 kffkfcl+are, 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 f59 flclf kk1+placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0lxv(ja(,xb7gz *5tq+d z.klp ); 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 zz 7ad xp,jb(x l5lgt(.*qv+kon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3c2dm1*cs/2 lmof 0 mbj0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the mo jmc* f/ml2d0c12sb net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate gxl i-+-fgc( gwup6;uwg)eifl44,z aral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one ofg i lwcu(iel-gu,4 ag) +;p4 w6zxfgf- the charges?

  Consider point charge4q. c ,d k6 h;oziejxdczv(-.zs of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such thatj d.6;4ocze , h-ikqx. dz(zcv the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charxv 9m 3 xbqmn7;8h8pnrge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it i3 r;mn97mqpv8x nhxb8s zero?

  Charge +2q is placed at the origin and chy0q , aomuj1n/m,9.o l6jsm ao;ber -harge -q is placed at x = 2a. Where can a third positive cha6y9m/qn,u aj.m 0l- ,m1 osb ;jroeahorge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. yjwb. mlohh le)97are 0o9 (qg- +j7je 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 agovs(jx wr -5,oainst the force of gravity by the attraction of a fixed proton some distance above it. How far above thoxv- os5j(wr ,e electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thread4:gl brn xx7s3.:r)sdc0jf 1vhn5f qrs which are 30 cm long. Bot)rs xsr:4.r1:cv0h5gn7 xld q fbn jf3h 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 isttfvzl4d/das r.23 /)+sef t a the magnitude of the electric field at a distance of 1.0 m from the nucleus?d)4st/rfd/+ zsl2 afe tt3v .a

  What are the magnitude and direction of the electric field at a zx( q;w(ylyo t;b)vp1vg/-ih distance of 1.50 m from ;(i 1h-z;xvy(/gotbq) lwvyp a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small t 2r.ex1 aumz9dest charge. What is the magnitude of the electric field 1 9ua dexz.2mrat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiolt /sq fh ter058gg45pn of the electri/p gq8lt0gs h54 erft5c field?

  A 5.0-C charge is 10 m from a small en gy yw;1ydbj 1*c/ 4l7mkq2stest charge. What is the magnitude of the fd2y71 bwsn/1mkgyc*ly;qj4 eorce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and 7n ;j3d3r fr1ptiih5evhxf5e zz36 v(are separated by a distance of 4.0 m. What is the electric field at a point midway between the twetxn 3 i hf derp53j(;v5ihz7vf3r6z1o charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and cd 4 b2 ng24cg-c4mddfa -4.0 mC charge is placef- mbc4 2ddnc4g4d2gcd at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marz iiu8 l49*u q.vd7g5n5gtkxc.yxw np g:v0+s k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what c5gxlidsv5gnk0 pi+7 :utn94u wv.x*.yzq g8point on a line joining the two charges is the electric field zero?

  Two point charges of +c;yg vmx* +l8n gd0ey4a2q *rvdklq6.3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at q y.drdmv+l* 2q06 4ke axlycgvg;8 n*the point midway between them?

  Three 3.0 mC charges are at the three corners of a squ4xcs.6gtnfg 3/+dtkzp /yt,r are of side 0.50 m. The last corner is occupied by a / kgsdn3cygp rt.6,tftzx4+/-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. Char7(z hoa:qxp):bs,p me ges are placed at the corners of the square as follow(ha: :pzm)qpx, 7 beoss: +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 chahdmb; 2+0iny arge of 5.0 mC when it is placed in a uniform electric field. What is y mibdah n+0;2the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha;q tdwdof1pf;j, .t b4s 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 0.120 g is placed in an elect vimpi2 1k4q1aric field of 6000 N/C pointing downward. What charge mqk mv4a1ii2p1 ust 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 bal+:ixm 8qw5zocs 00kjs l is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direok+m85szc0 i0 qx w:jsction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. Whbam 4pjccsvq5e-u c9 2viu;62at is the magnitude of the electric f;v2puv 2i54bc ae6 jqmu-c sc9ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.9 4) idw fggjlg16e btd7+n:yj0 cm carries a charge of 3.0 mC. What is the electricj6twe +b17gjd lgy:n49)df gi field 6.0 cm from the center of the sphere?