State the law of conservatiop/o79x sywvd 9n of electric charge.

  Is it possible for two negative charges to attract each otheru6bx)a7a x bl0?

  Is it possible for a positive and a negative charge to atrj cap1ndvn .lz bk(c)5vc3x9 x(u)l4tract each other?

  A glass rod is rubbed with a piece of silk. b 8*cua )7iryk During the process the glass rod acquires a positive cha* )7r8cybkia urge and the silk

  A proton carries a

  The model of the atom0+hja0vkc y1ogjy;0 8aur s6b shows a

  A neutral atom always hatakp n2h6o dnn+yohe89+8 7h ps

  An atom has more electro;r: s8s diunto80ds6r ns than protons. The atom is

  Materials in which the electrons are bound very dnu8-t98l5 lih d .awmtightly to the nuclei are referred to d nm -85ld.w9ai8hl tuas

  Materials in which the electrons are bound f1/b.o(hphepe q1e/x /3 uttovery loosely to the nuclei and can move about freely within the material are referred/ x/upq .tfo e(to1h1h3b/pee to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Ta:u lp9ldq3m+ n (q-arhe end of the metal bar farthest from the charged rod :(pm-nu3a r9ad+qql l will be charged

  Sphere A carries a net positive charge, and sphere(9sssj gww*v2 B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a s s(j2ws9vgw* wire that is grounded. Which statement is correct?

  How can a negatively charged9i9n+ p ewc+h)gvp km2 rod charge an electroscope positively?

  An originally neutral electroscope is0uwyz6kt8bv ,v+aa 3h briefly touched with a positively charged glass rod. The ew6 +zuavyk0ha,v8bt3 lectroscope

  An originally neutraldfw7dhb(n - u2 electroscope is grounded briefly while a positively charged glass rod is held near it. After theh wd(7undf -2b glass rod is removed, the electroscope

  A positive object touches a neutral efz(g -yonu97idg/ h h6z5q mhtmz(..qlectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happenhgz9g(.hm6t/yiuoqdh(n f zm qz5.- 7s to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral up),jnp0yi t-/y 9qm jmetallic 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 rolls forward, but does not touch the negativenjuqp-/) jm, typiy 09 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 tpjsjzj /*65p. /dwght he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated v)9do,guga n: *qgs6 tby a distance d. The first charge is larger in magnitude than the second cha gqv9a), du6t:*gnosgrge.

  Sphere A carries a net charge and5 mbe *p3cncd +-a+ymw sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic f5cnbw3 - *+e+pammdycorce between them?

  Two charged objects attract each othey 8u-eb oaz;y.r with a certain force. If the charges on both obja -y8ze;o y.ubects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutua0 w)hqqhpw(j83 ,ohvtl attractive forces of F on each other. If the charges are separated by a8 hq3 (jhpqt0,ww)h vo distance of d/3, what are the new mutual forces?

  Two charged objects attract9efd 6v :tuokksxp ,18 each other with a force F. What happens to the force between them if one charge is doubled, the other charge is fs: p1kuev986xd, toktripled, 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 ay)x*v:( bys xymrcf ;bp1)jt 1 distance of 1.0 m. What happens to the magnitude of the force on the psj) fyxyvx);rm y:tp1*1cb (b roton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a-ndt(of;v hi9.u 87sxk q w;gjf3vq*g distance of 1.0 m. What happens to the magnitude of thh oxf f nsdi 79-(q83jg;.w;*g kvvuqte force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated byx-*4q7ncou +wl-oa equzh n .9kbe,p. a distance of 1.0 m. What happens to the size of the force.bkew *7n qxu,eo po aunql.cz-49- +h 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. Wnbe yk1zhvb), c qmb2/p78f5ma y4ny0hen a second point charge of -Q is placed at one of th p vye8)0fk 4h,1nzb yqbm7m2anb5cy /e 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. Wheaa o6, -o7kn3yivxo2 vn 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 ce2, yo 6oixkvav7oa-n3nter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is notgm* (gakt cuif5r/3,a, ah r.g a vector?

  At twice the distance from a point charge, the strength of the electrir4a91 s-lrowng 8u) n9zh qzox+-(usoc field

  Is it possible to have a zero electric field valuexhmh;k,c*b,k o5xh9 + b, eb21 kzbyhd between a negative and positive charge along thh b;h mbh +eokc hzkkbdbx y1,x,,*529e line joining the two charges?

  Is it possible to have a zero :xt zo qqu /3 xyajr7mh9h 2h,1hnt;)jelectric field value between two positive charges along the line jmt ra yh3;x,hx1o9t:qu/ j7z hqj)hn2oining the two charges?

  Electric field lines near psitive point chargrpemi/ko4 7- aes

  The electric field showniqq09cir:l nb2l 5*t v

  Can electric field lines inters9ic*luf) r(kg ect in free space?

  A solid block of metal in electrostatic equilibri tz /5+lzibpb(um is placed in a uniform electib/+ zp(bt5l zric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a 1,vkmpfzh7 2 ohollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center7mfhz1 ,kopv 2 and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifort4e0q kafr: n4:2 cxovm electric field is directed straight upward. Whne4qctk :2f4or x :0avat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil a9d-k q/b,wgdi9mu 0sibrium near an electric charge

  A positive point chac4wh-ky8h 2 iwi+g,no/p jlsiw(wj cz:7-h2drge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovepc2 cw/kl +nidsj2oj hwh,hiiyww: 84 -7-zg( the hollow sphere has

State three properties of conductors in static equili6 x09l4yzgu vbbrium.

State Gauss's law.

  The charge carried by on ual1ko ahhn*34(8aule 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 char5dz b5nzqy8ha92zrn 9y c qfl-(-l fj3ge of +2.00 mC. How many more protons than electrons does t85a b3-2j (zqn9ldhz9 l5y-nzyrq ffchis piece of plastic have?

  What is the charge on 1xl:(o8lj u; riq/ vcb( kg of protons?

  An atomic nucleus haooh q: 1nv if/zs96a.cs 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 2.0 and -4.0 mC,44;ez+sqk1lflz k 3srh l8p5g respectively. What is the mll4p 31+;gekrk4zzss8 5q hl fagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th06:u+pilbjh) jkwcfr f.jl 13em is 1.0 N. What is the maw0 l3b krh. jp+6f1j)lif jc:ugnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thep6z/ yr6nct piooj4c1 sra(:9y?

  The force between a :st ;go(qm)xnz1 9wra$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencezn- lfj1+v )b jmw3j5pfd;1ka a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bvb1)fw+-1p zja ;n5k jfj3mld etween them?

  Three identical point charges of 2.0 mC are placed on the x-axi lskdz(,iq)4k1ac7j+7nsdg fs. 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 which acts on the cai7 , 17kkn4+(sfdgz)jlsd q charge at the origin?

  Three point charges are placed on the x-axis. A cha4j9xfzz* /-pel pjl8irge of +2.0 mC is placed at the origin, -2.0 m lx8j -izf/9 4ez jpp*lC 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 the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x +r()nnhfi f*0suk0pv = 1.00h0nirf v u(+sk *)0fpn m; Q2 = 3.00 mC 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 pm vgmoe u,qi:n5-;k. *eav5q at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is vi;m- .apevemgq k: 5,no q5u*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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3a 8gf a..r0x+ebaf1rc = 5.0 nC is at (0, 0). What is the magnix cf.+a8. a0afbrgr e1tude 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 ihjr 8gs 35wcr8 5ere,us at (0, 0). What is the direction oje 8hes3r5 wurr, gc58f the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed adef .dncb9*- qt the vertices of an equilateral triangle which measures 30 cm on a side. What is the magndf c9-n* dbq.eitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, nra jl 0:/,gnwwhich are separated by 3.0 m. At what point, on a line be lnwan0/rjg :,tween 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 +9.0-C charge is at x yk gyda)g7r -)= 4.0 m. Where on the x-axis can a third charge be placed so the net fok)raggd -yy7)rce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 8 13kw iyx/d 6iygs:awWhere can a tiw: k68ygdy a3/1xw ishird positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totat5w5 rh;p nde/1ke/9gu/ridb l 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 force of gravity by the attraction of a fixedb c/t q21g1 nj8vp6lro proton some distance above it. How far aboor l/ b21g8cjn p6q1tvve the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poinjls.+a3:n w 8d lyj5egt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostat58+j:elg ydjawns .l3 ic 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 electric 4 clgeqe)e.d2c :vqu3.j gmj6fielduml eg ).c26eg:e 4vq c3.qjjd at a distance of 1.0 m from the nucleus?

  What are the magnitude and directy(vn. ef+nn o4ion of the electric field at a distance of 1.50 m from a 504(n o+evn.fyn.0-nC charge?

  A 5.0-C charge is 10 m from a small test cel:8y9mc+ .s;oyn lnkharge. What is the magnitude of the electric field at the location of the test charge?.y;o:enykl lc m89+sn

  A 5.0-C charge is 10 m from a small uxb;f)b tl+ ka8; s:e ox) *gusu:e,gxtest charge. What is the direction of the el+*ux :;:bk)gs,tx falgo;8seebx u )uectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituh m wro/ku6hgx u)(3k4de of the force experienced by a 1.owguuk6khh) /4r m3( x0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0m u+:l5f-dgx1zubc ru/mu50(qk: mof C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chao(fxm kf/ r 5-cg5d+u:u0m1 z b:uuqmlrges?

  A 5.0-mC charge is placed at the 0 cm mark of a mecyer.//w iqww hn. :zi qdz((8).j yboter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the (j/w ./:yo(iz )dw8ybzq n.h.iwqcer30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4, ;0vlx yyj g1gms*k sh,f/9zn.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargs k /m hgljx,1gs*y;zyf9, n0ves is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x mr; ,yj7nzvi 2= 0.20 m. What is the magnitude of the electric field at;niv,z 7yr mj2 the point midway between them?

  Three 3.0 mC charges are at thlfpn5bd+6- xj go20ome three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie06l 5+ mf- pbxo2dnojgld at the center of the square.

  Consider a square which is 1.0 m on a side. Charges arw((l 2u;;l ft cs 0ha2waufj,fe 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); -3.0 m; ;hf0 cju2(w2(la ,fwlfautsC at (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a chargel )9s(94-lm+m lqu qmq7qa gby of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric y9 ml+bmqqm9 qul7s-qg) 4(lafield?

  A particle with a charge of 4.0 mC has a0fraye,s 8*i /p7v uo-jom q-e 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 electric fies( ag ezdu:l28n7q ;inld of 6000 N/C pointing downward. What charge must b s7ul2:gie;na nqzd8(e placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ctfu hl.9b ( pb*z)w*rqharge of -2.00 nC. The ball is placed inside a uniform electric field, and is sb. 9 uqrbzthw*)p lf(*uspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrie2hwfmf chs*d u3bl h8a74 dg))s a charge of +2.0 mC. What is the magnitude of)7ub42 *h)3wdsfhfmgdchla 8 the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 0bqxeu32,( e-glbpqn mC. What is the electric field 6.0 cm from the ce (gbqqn-u 30l,e2bpxenter of the sphere?