State the law of conservatiop2,c,u30w mpm(kci qrn of electric charge.

  Is it possible for two negative charges to attract each ov4 7 tw)b6 sh(1xkxrdtther?

  Is it possible for a positive as* k6sld m sjc )ittf*dt(/6(cnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the nu s n +)bsrnyhzu625)yx:cm;glass rod acquires a posmu2y) r ss nn6ch5+:;ub)nyz xitive charge and the silk

  A proton carries a

  The model of the atom 7z :woyfc9g.0hp3yv.t b9uvmo4,mxx shows a

  A neutral atom always hasgee+ gsiz (k:ax7*kh/45p lap

  An atom has more electrons emv63qcrp;y)7 z is:6zp1 d4 apzw)el than protons. The atom is

  Materials in which the electr:7 fyw ntep2sk2) tp0nons are bound very tightly to the nuclei are referryttp 2)wkp 7e0n2:sfned to as

  Materials in which the electrons are bound ver,o,b*nuc . ni8*vejvry loosely to the nuclei and can mo v. i ,n,nr*8oveucj*bve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mekzc4nk .; ra-ijn2i;ktal bar. The end of the ;2r. i n k4kac;ji-nkzmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chargnl1a4c jc8a:w7i uhp.e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which state4u1ah: w7n.j 8ai pclcment is correct?

  How can a negatively chargy;36 0r9etg txitl/ waed rod charge an electroscope positively?

  An originally neutral electroscope is briefly tozhi , h-rbsv *+s80ztouched with a positively charged glass rodtsz* zh0s b-iv ,8rh+o. The electroscope

  An originally neutral electroscope is,85ypkqgx e d1ohb6v a+t:y.bhec )c: grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopexbe1gyc eqh.phbo:+yadv65 ,:8tc ) k

  A positive object touches a neutral electroscope, and the leaves separate. Then,lzkx*xyzu,x t 4a9 55e .moax a negative object is br5oy ,amz lx *k5x t9e4ua,xz.xought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tab kcpi6/:0bv ghle. 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 balp0:ib6h cvg/ kl 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 conehsb h0d42 oz9xdro /8stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanc nxxha 08kba84e d. The first charge is larger in magnitude than tb hn0a48 8xakxhe second charge.

  Sphere A carries a net charge and spdo h8kj e1k5y*here B is neutral. They are placed near each other on an insulated table. Which statement best describes the el *yhkk5oj e1d8ectrostatic force between them?

  Two charged objects adsqjf 8y3xy7 0ttract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between th3fqydx0y 7j s8em

  Two charges are separated by a distance d and exertey0e3el e,in:. a -sjy mutual attractive forces of F on eac,l:eyee0 s-nai e3 yj.h other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the for3pqvzl(xz b 73ce betweevzq(3lb3 zp7x n 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? The force is now equal to

  An electron and a proton are separated bywuu8b0g myc )*wd,cmr7e7(x e a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to 8 m xmg,)uyu(7*bwrde0c7e c wthe first electron?

  An electron and a proton are separated by a distance ou8:f nik pei/wlaa4q0/ l-b5t f 1.0 m. What happens to the magnitude of the force on the first electro5ept/u-0 8/la:w lafnkb 4iqin if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wm9udlukf(3nf a( 1up +icm*:;sp) zhbhat happens to the size of the force on the proton if the electron is mo+p)zda(;m3m1fui9bc: p (uklsfnuh *ved 0.50 m closer to the proton?

  A point charge of +Q is h cxsg7) d *vvmtj):m2placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is o2x:c vm7gsh))d* mjv tbserved 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 eq2eb;bx953a; oln n4 1iozajc5eqzwo( uilateral 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 th(3ea;xw9 l1;2nizq ja4o n5be ooc5zb at acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following kv ja5 a/8o(,ngncz.x is not a vector?

  At twice the distance from a point charge,s;;/ksor:l2ql 5dup t the strength of the electric field

  Is it possible to have a zero electric joku w*, q(xqz,2lz;fxq.0bq j-*dhqd avz*- field value between a negative and positive charge along the line joining the . jd x a q,qbl;w -h*-qoxq,*zv2fj0q*uzzdk(two charges?

  Is it possible to have a zero electric field value between two positive cha)h5+gqtg 4 cyprges along the litygg+ h4 c5)pqne joining the two charges?

  Electric field lines near psitive poix cs.2kkm, z*ynt charges

  The electric field show kr;n-q-i,6v mdckhtdj z81; 1yxi0cwn

  Can electric field lines ojv 7p2fvbp. 1intersect in free space?

  A solid block of metal in electrostatic equilibrium is placei+t eus 3.g;*ubd 9x9.voiehad in a uniform electric field. Gi.oueu. *htexsv9a i9;3db+igve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet*i*6 z.bfulayt*c os 1ers are each given the same charge, the electric field (E) midway betwzfuo 1lc y*ts a*.b*i6een the center and the surface is

  A cubic block of aluminum rests on a wooden tab),kukp yrwbi3 gt/f i7xd,3zcqi**:qle in a region where a uniform electric field is directed straight upward. What ck x3 c:biwid p, grqf) *tyu3k,q7i/*zan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near az8.9j vs gbiavciw(1 0n electric charge

  A positive point charge is c czjp:9+fh (uenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above9f :zp+hu( ccj the hollow sphere has

State three properties of conductors in static equi-qpyhfz:lbrx)gvaum )g f 2:-/*ajw) librium.

State Gauss's law.

  The charge carried by one elnx e7 limt wz*cd 0y,u7;u9av,ectron 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 +2.00 mC. How many mooygc.-s 8z; h;rxg 2m4tz0tkj re protons than electron8cg4 r2j;0 s-.;gkz htxzotmys does this piece of plastic have?

  What is the charge on 1sq7yqtzn/0 *oxh* ef- kg of protons?

  An atomic nucleus has a 7d a1 .ymzqa*qcharge 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 lncsrb x0k16+ values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thexklnbs1+ 60cr m?

  A 1.0-C charge is 15 m from a second chayueym,54;4px 9 ohaz:yc a/+m e4sruhrge, and the force between them is 1.0 N. What is the ma um95yh y+az 4;4eusxcypa4emoh/,r: gnitude of the second charge?

  Two 1.0-C charges have a force between them of 11fh c*s ccwx0)(y b7xm.0 N. How far apart are they?

  The force between a lp).;e 4j+y cc u;ysek+m /oja$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ewy:3j20j ok;oerw w8experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the 0 r2 :ewjkjyw3owe8;o electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The7l(e l v ,kj,ohuvv:b7 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 hv7: e,llvo v7b( ,ujkthe charge at the origin?

  Three point charges are placed on the x-axis. A chargxjh/7pxg .t/ b0( ;nt;bx pfchmrdo bp) yb9*)e 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 magnitudjh )n/x( t/hx)p .*fb;b 0 x;r9mobbcp7tydgpe and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followjsjhs, g uu2z(fr 422ob1u1yx,) kaku ing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is ufz sxk2k1o21h(j b2ay, gru)u ,jsu4the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at tlw )k,ep/nr *phe center of a square, and a second point charge of -Q is placed at the upper-left corner. /repln*k )p, wIt 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 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 = 5.0 nC is m9nirluv)g4*-+ rlz i at (0, 0). What is the magnitude of the net force on the 5.0 n4l vg)lirn+-z9ui mr*C charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.*/p xdy +pkmm)0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net mxdp m)p/y *+kforce on the 5.0 nC charge?

  Three identical charm7f byi oi)fj+y/4v ;*(lh csrges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the ma lyv;j/hoiby *7if()f4 sm cr+gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by zi0eoj.9bu6 :e8x 0por,plg v 3.0 m. At what point, on a line between the two charges:lg9z xp 0p,ejvbroeu86o0i. , 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 m2qvjbs8t2 .+cld ,oo = 4.0 m. Where on the x-axis can a third charge be placedl 8 st.omjod ,2+cb2qv so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed fe+t*ddx ( q0l8pr9/(3voisjr8 ivhsat x = 2a. Where can a third positive charge +q be placed so that the force on it is8frt3d 0j9v8ps+qi/(hdx*s ( iv ler o zero?

  A copper penny has a mass of 3.0 g. A total nuz 9f vup+fht0k: k*,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 up9hwtwao. zc:o2 ,ebykoc(-. t against the force of gravity by the attraction of a fixed proton sot o-ww.o2 a9zot hck.eyc b:(,me distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductzce69f yj gv7mx8yc3 ;ing threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces67eyg9zc3;yj v 8mxcf 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 ,qy p(gt-zefbtcdt-2 /9arb0wh./ po td o;k4of +40e. What is the magnitude of the electric fz9 d4/ ppo(q/2a-ortt. bt-0wf k;tyc,gdheb ield at a distance of 1.0 m from the nucleus?

  What are the magnitude -jmta:u 2dpc; t h-s1bnn al,-and direction of the electric field at a distance of 1.50 m from a 50.0-s- pjmu-tnb l;d,an 1 2chat:-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th4,cmc- ulruw gl-.pd -e electric field at the location-ucugrw,pl -l.-4 dcm of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is td+ye 4ijqv/plm98b:u he direction of the electric fmie /:4+ 8vudqp9ylj bield?

  A 5.0-C charge is 10 m from a small test charge. What is the mdi1zw xrqy6 l/)pfs qtf+ 2(1bagnitude of the force experienced by a 1.0 nC charge placed at the location of the tesps26 (lz+qd1t1q r fby/ifxw )t charge?

  Two point charges each have a value of 3.0 C and are separated by a distancekra(5;--se:ltfqn v e;z btmk ;l7 h*x of 4.0 m. What is the electric field at a point midway between the two chargeer lq7a he t5s;x zfbl*;n-tm(:-k v;ks?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 64xubb* :b+nccawjuig c,x ;qp98qt2 stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric2cw cn9b upig ba:, qcqtb*+;x648uxj field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stichv)0n3k0f k )dui3 elao;o,cik and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field z)n)0iu3kd; hli0o3ovk fa e, cero?

  Two point charges of + a mtex+4-tnkbvx+vvmh6i+3 :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 th3ix tv tk vme +b4-haxn6:+vm+e point midway between them?

  Three 3.0 mC charges are at the three c6jd sbd 3m1/*. qiwyotorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the t *yd16w/jb3doi. qsm center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ath.vkow yiy6.9 w y) kwl5(jwe3 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 mC at (0, 1). What is the magnitude of the electric field at the square's ce)w jy yw w6kl.h9woi3 kev.5(ynter?

  A force of 10 N acts on a charge of 5.0 m-;j;y ccdan2 ossy3w(C when it is placed in a uniform electric field. What is the magnitude of this electry (s; ;o-ndcj3yw sca2ic field?

  A particle with a charge of 4bzchvi0r/nf7 m; ,jouww(mgo :i0i;;.0 mC has 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 e. ; oq7u p/)6t1i ma 2ygzzf*cwcpru8vlectric field of 6000 N/C pointin2wug.if z 6 copqa cpy/)t;u1rmzv *87g downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a civ::0xvv/dewisz)a 2 harge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspenxv:20)dav:eiiz/ vw sded 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 theanv.c j9q- hxzh(-w k3h:oi*j magnitude h(zh3n- co:i hq9x*-.wvj ja kof 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 ,jnte+dg ;c2x mC. What is the electric field 6.0 cm from the ce xt;2jgcn+,denter of the sphere?