State the law of conservation of elec 1fr8a j;h wp+mupc9l6tric charge.

  Is it possible for two vg 2ivou:9c9 anegative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachzm-wmy f/ 81ep other?

  A glass rod is rubbed with a piece of silk. During the process thev;jdh6a0njl pkvu8 17a*cip5 glass rod acquires a positilda0 *njj cvpip17h6 v5k;ua8ve charge and the silk

  A proton carries a

  The model of the atom shy)gk (6;eyaoc/ v 0ntvt7g;iwows a

  A neutral atom always ha dr2vc 5s sxx;9:mdrocu,9u*z s

  An atom has more electrons thax ukk *tc5x/-rn protons. The atom is

  Materials in which the electrons are bound very tightly to thei8 -,8 xh0ug/ m/cgcr (duqqmk nuclei are referred toghd,c(8 xum0 gkrm8q/c/- qiu as

  Materials in which the electrons are bound very loosely to the nucleik-i7fzy,.uh* bxwi a : and can move about freely within thef iz:y,* hb-.x7i kauw material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 3z1wp23vzg9 d-ps vm29uzsix The end of the metal bar farthest from txwp1 g3vpmi3d9sszz- 2 z2 u9vhe charged rod will be charged

  Sphere A carries a net positive charg3jryddv vxh:38t) h m7e, and sphere B is neutral. They are placed nea38 dtvd) mjhh:yvr7x3r each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively4ziam kzu1-e0/ht vh .d.8qlra 2n xlg9u(vu2 charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly toucld6n54 hmp(eyu a 5ac-hed with a positively charged glass rod. Th5-h64p(e ln aduym5a ce electroscope

  An originally neutral electroscope is grounded bri .fkne*/2mnap* vck2tefly while a positively charged gnk.ec* kf22pvma*/n tlass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touchesp3 rjarvonsxi4 1 y c3;in41t+ a neutral electroscope, and the leaves separate. Then a negative object is brou y 4op1n ;ci+nirvatj31xr3s 4ght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulateid5 w5vk z+*zty87uuc0s8uzdd 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 stops. The first ball rolls forward, but does not touch 50wyudt ucz88szi 7dzukv5* + 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 tir1+a)p*p6za j j5ojconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thapm().rk j:zy.dhbgt3vc /.k e first charge is larger in (zgvyk mkprc ./).dt:.3jabh magnitude than the second charge.

  Sphere A carries a net charge and spherl (a5fmi/,zvf i kb34de B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwe/f i4li3mf5bkavz( ,d en them?

  Two charged objects attract each other with a certain force. If th0donaz8rj./qk3 z6koai (u0 xe charges on both objects are doubled with no change in separatiiudkn63 8k( zza/j ra.0qxoo0on, the force between them

  Two charges are separated by a distance d and exert mutual attract 2 / sd6nmy2khhk(vgm9ive forces of F on 69 2y(2kmn khmsh/dgv each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects mbnc q/0/ksl8 t lez;m+k/8gcattract each 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 bettnm0/ kle/mkcg8;cl b+/8qzsween 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 distance of 1.0 m. What happe, *2 u.+v km2t3 v4gzco6 +kbocbdioions to the magnitude of the force g3,vd.k*zcb+ 2kb mc2uoo4 toiv+o i6on the proton if a second electron is placed next to the first electron?

  An electron and a proton are s p/ adngdgbtmjl+* ql31l5a84mi(2a keparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next54td1j a3b(2g q idl8p+nma m*/alklg to the proton?

  An electron and a proton are separated by a distance of 1.0ya7bx wp2ny t 2 ,2g5woshel4/ m. What happens to the size of the fort la,wgn2 hyo b4xp/ ye2w5s27ce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pl8m l )ttp7k;szaced 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 magnl8 zs7m; )ttpkitude 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. z 5d m7 jsvfl*vne6v((When a second charge of +Q is placed at one of the triangle's vertices, an electro(jvmds n *76f (vze5vlstatic 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 isbr+yy.6xw sz3iaic(- qb3 g g2 not a vector?

  At twice the distance from a point charge, the strength of thlap0frt 8 fb ebi)/;u.e electric field

  Is it possible to have a zero electric field value betwuza-.de 9w9 rm.e 1lx)et5d rieen a negative and positive charge along the line jointd9 eru .xr9m.we-e15ia)zd ling the two charges?

  Is it possible to have a zero electric fieldy gddt 1jfec0fy3,/4k value between two positive charges along the line joining the two cha,1ge/yjkt0f dd 4ycf 3rges?

  Electric field lines near9(3ho)s blzac psitive point charges

  The electric field sh; r0)ys etq0r1 wl7mpdown

  Can electric field lines intersrtdfb.4 -o ,fjj .iz7kect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniw p5a/* e/s g ;bzgvqfr6k4/qpform electric field. Give a statement concerning the electric field in the b6kpg5pbe vg4/a/rf *q/zqs ;w lock's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eaa6fl 96*mos. xley3uxch given the same charge, the electric field (E) 3lo*x6ufle a 96xmy.s midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table 4 oj0.wrvsb(fye7b 7l in a region where a uniform electric field is directed straight upward. What caf(4s 7vob lw7 bryj.e0n be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibri jq:b eked6b:ow0f63jum near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundbvxjfn i i.93) tqdd. vz9z0v+ed. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphej9iv+ di xv fv9.z.0nz 3b)qtdre has

State three properties of conductorsqfd mo;(cirn,4g,u 4w in static equilibrium.

State Gauss's law.

  The charge carried by one elewb-k63lktpq h:e-g ) pctron 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 charge of +2.3+ crwq7g 5ws(xeg yd))* ulye00 mC. How many more protons than eleey+3*) gs5(w)rue7wyd gx clqctrons does this piece of plastic have?

  What is the charge on 1 kg of protons?; o ol6bg4hj.h3et x u(7jpzh4

  An atomic nucleus has a chargtyryzkpkqih7d6u :6 .4:m yu .e 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, mfj50(ck7 s5ioij-e chave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the ej7 iccej5(omi k0s 5-flectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between gzis bfchie-ci m)r(jx 63 3//them is 1.0 N. What is the magnitude of the second ch3fhsmb 3r 6geiix)i/ (/-cczjarge?

  Two 1.0-C charges have a force between them of 1.0 /plp6 oi8vke/N. How far apart are they?

  The force between a mp 0u978g7fgl faktt 6$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experieqqqx18q396j. jdpqx x nce a 1.0-N force. If they are moved to a new separat1. qpdqqxxx38 q jj69qion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC l/8 -2cx8/rkvj cig4aj:ih fware 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 the 100 cm mark. What are the magnitude and direction of the electrostatic force which acts o8 r/k4gv 8f:h2iwcjca /lj xi-n the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2buc jr:z/9xaw,h5z+u)h: szh.0 mC is placed at the origin, -2.0 m C to t hc rw9x5u z+zbh)az/u: :s,jhhe 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 locs z * .ak :)(o62z;rasv6nag *eojlikeated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00i*e;ea6)nsv l(z: r6k 2o .ajksz*oga 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 point c r,qd qp2.ey5wharge 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 chargyq2.,qpwedr 5 e if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0o.jijjcm 8h+;.30 m, 0); 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 forcjj.m8 h j+i;oce 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 ssxr(ze /fjl/ 84nt v3c bn7av. m+k4tnC is at (0, 0). What is the direction of the net force on the 5.0 nC charg ne v cj3/4m4x k(8sbf7z.sl/rantv t+e?

  Three identical charges of 3.0 mC are placed at the verticesmy*4gdl u5h.qax xk s,94g6j9y /qyot of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which htqj.4agxyoqk/* xmyy ,s4 ld9g69u5 acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3z7qt5xijh, azm537w d3ix8 ck .0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that t z8i55hx3qi7caxwjt7 dz,km3 he electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a 2n ev:/ 4i427el8tbuyusq:vrakw 2rn+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is 2eyl82:47t4q nrun /2vi: krbausewv zero?

  Charge +2q is placed at the origin at f)cu*+6x(nooco 8zk nd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force of*(oun oct6k8+) cxzon it is zero?

  A copper penny has a,q3j ba,ss.ln 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 fz6-) o2o0 twn4dax w xkfbk(;dorce of gravity by the attraction of a fixed proton some distance above it. How far above tw bkxd tn)o24(o0fza-d6kwx; he electron is the proton?

  Two 0.20-g metal sphx gpt*j1 cbj-r,p:ow67 xe,q meres are hung from a common point by nonconducting threads which are 30 cm long. Both are giv-xgjj q7 ,pc:p*m t,oxwbr16e en 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 is the magnitude4j9 bqoq3i ,c8dw szx3 of the electric field at a distance of 1.0 m fro,xq43iz9 dwjos q 3cb8m the nucleus?

  What are the magnitude and direction of the electric fieldk5 +fol6sq5dg.umot0 at a distance of 1.50 m from a 50.0-nC so0o6.f gm d5q+kt5ul charge?

  A 5.0-C charge is 10 e 3yl856 kf)gaai3ueg hz(*e om from a small test charge. What is the magnitude of the electric field at the location of the test char yg38eeugzaoei(3lfa 5* k6) hge?

  A 5.0-C charge is 10 m from a small test charge. What is the tz,-ocj z9o/ jrewr70e*af*h direction of the electric fij*9w/jt zh0-zfo,cre *eaor 7eld?

  A 5.0-C charge is 10 m from a small test charge. What is the dku*0l:sih 3p2,zni u magnitude of the force experienc ipzun0h2i *uk,ds3:l ed 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 are separated by a distance of o dde(su9h+3 -z: fvfa3vde h57ve;rl4.0 m. What is tha3hv- r:ds;f3(o he du7dvv+9fez5e le electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metelmwaiyw x gd yp:d6nd)+m7*5. r stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm +*dddl ng)pm5m67i w yy.w:xa mark?

  A 5.0-mC charge is placed at the 0md3o lg-wf m79 cko9u5 cm mark 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 twowlg-d5f7 9o9um3 komc charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Wh+u1cxy/ iek0 2ubv6 kxat is 1ix/uuc 0y2k 6+exv bkthe 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/kle+mm3f nz3bk z 4:i 0.50 m. The last corner is occupied by a -3.0 mC charge.fk/ nie33lzm kb zm+4: Find the electric field at the center of the square.

  Consider a square whixshz+pl,-uu ;ch is 1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at +x-l;u hsup,z(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 placed in a unifor4var lws ,q53rm electric field.54sq,ra3r lwv What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has dvcg 26u4bw9g 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 electric ff m h4qo4xqfrbetv-g8, 6wr34ield of 6000 N/C pointing downward. Whaxr fe bh6, r484toqwm34- fqvgt charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carn(1e 2my/gh,k tnpxv( ries a charge of -2.00 nC. The ball is placed inside a uniform electrivxeph,g 1/nkmt( n(2yc field, and is suspended against the force 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 mb r 1ot/0 r-9 7ufeb8txpvwo rp:ug14fagnitude of the electric field 5.0 cm from the sphere'sf94:vo7 gxtw1 eb -urupf1 p0bort/ r8 surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr -mry)x6p f)snic field 6.0 cm from the center of the spherp-sf)) 6xn mrye?