State the law of conservation of -10 z 0xpw3r: jthln *j/oinllelectric charge.

  Is it possible for two negative charges to 0un*39avn ymb fz+nh 3attract each other?

  Is it possible for a positive aeq)9n2 y)j 4n6 8aypt)l t,r+rbjay efnd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rodnw ses1q765 nx acquires asns x576 1nqew positive charge and the silk

  A proton carries a

  The model of the atom irc0oa2euuo rzbvo7nh4b+;a+ 0.9u f2w iyh ,shows a

  A neutral atom always hac.,l3mqhu o8utal .np7 wcruh:+ 9j7es

  An atom has more electrons zzf,6 z3 aiuo95c 8hiethan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are reff4/pp8takz q)h ld9-terred tqp8ttpdaf 4h)z9k-/ l o as

  Materials in which the electb/z5;wk n5dpkrons are bound very loosely to the nuclei and can move about freely55d/zk ;npkb w within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bbjfm yk 25v8s,/ 7wbymar. The end of the metajm/ yvf 28kb wmy75,sbl bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neqel nmkgh124wuqk *h/g0 0ep+utral. They are placed near each other on an insulated table. Sphere B is briefly touched with a uh* qqhk0g g l2/wm1e +np04kewire that is grounded. Which statement is correct?

  How can a negatively charged rpty4eq :8e8g ood charge an electroscope positively?

  An originally neutral electroscopa8t 4mym)evtan; xg8 :e is briefly touched with a positively charged glass rod. The ele y;:a mm8g)8vtnat 4xectroscope

  An originally neutral electroscope is grouev+ 1nuusk7rab 9 ;ckq;)nii *nded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosni79*ek 1)+ibusuc ;nkrva ;qcope

  A positive object touches a neutral electroscope, and the lzp zkx d07m k.ty33wg+eaves separate. Then a negative object is brought near the electrosc tz+kk7 .dygpz0w 33mxope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. r,qxi7:7 er6 fosvo8 0qbjh1 vA 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 the negative object. At no time does either ball touch the negative object. Whbsei vq7f 7,hj8xqr 6voro :01at is the final charge on each ball?

  Charge is

  What are the units of the Cojg+ (z*fg ye e:ch ++quxtg:cv.0zly*ulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first f+ ypw3 iohu/qzr ,-*fcharge is larger in magnitude than the o3-hfqy+,iu*w rpf /z second charge.

  Sphere A carries a net c5z;5 8zt wam+rnoxqo4 harge and sphere B is neutral. They are placed near each othe;8rw5xt an zqo4m5oz+r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects atti;9*mau2xc ct,d8qjo x8. zx nract each other with a certain force. If the charges on both objects are doubled with no change in separation cox8,d;mx8* z t9xc2quni.a j, the force between them

  Two charges are separated by a distance d and exert mutual at)lp0dod .x jg*tractive forces of F on each other. If the charges are separated by a distance of d/3, whp0. jdg)d x*olat are the new mutual forces?

  Two charged objects attract each other with at/5e).7gk bzen x7s kc force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation dix/.cg n7b)e57kkzets stance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sy* cy4 i*ks., cl5gxifeparated by 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 the firstci4skf, y *l*iygc5 .x electron?

  An electron and a proton are separated by a distance of 1.0 m*.kep --5w eoushiw4m. What happens to the magni-pw- *k4emesio .uw h5tude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0)g 2c1ojl.opc m. What happens to the size of the force on the1po gc)2 .cjol 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 seconcz*p qidey /ealyy-n u+11p ):d 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 y) dqczpepn:yi e- 1/*+l1ua y-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 du)w3 o ivo9+ *,vtkmmof 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 charge due to a third charge of +Q placed at one of io om*ku ,+3mw t9vv)dthe other vertices?

  Which of the following is not a vesue2p5znaazq c1j.b e9/8sc 8ctor?

  At twice the distance from a point charge, the streng5z;/s8w btewzh/ le r+th of the electric field

  Is it possible to have a zero zyj7tyoh++pqp2z, --xzcpy. electric field value between a negative and positive charge along thez + +ytjz,y.7-2x-zhpcpq opy line joining the two charges?

  Is it possible to have a zero electric field value between two positive -u5m 1rleg2ntcharges along the line joinu125mtelg-n ring the two charges?

  Electric field lines near psitive point chargesxssl 6x 8h2ruqd72k 7e:ih mgue4)0 kg

  The electric field sh96mil;;xzla:kgp7peb )y 9stown

  Can electric field lines intersect in free spacp* -l 4y6 t83mo bil(pf v5kpn)mwvt7ce?

  A solid block of metal in electrostatic equilibrium is placed4fi sub 59sef5 in a uniform electri5e59sifsf4b uc field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphernnc rvj doa3q .(gm+9:e of equal diameters are each given the same charge, the electric field (E) midway betwj n+.q dmn(v9 rgoc:3aeen the center and the surface is

  A cubic block of aluminum rests on a wooden ky7kl; qkrzqv+-c2d:jgrr ;/table in a region where a uniform electric;rcrd z2yv+r; / qkg-7:jkq kl field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electriq ezogk- 6nn xt6 1a.j b)i)e25rseioc, 0wk2uc charge

  A positive point charge is enclosedosyq6z ; fuaofx q:n:-: wp;zo2)v7 nd in a hollow metallic sphere that is grounded. As compared to the case without the hollow nva pu6 qyf;zf;-q2o ):dx:wzn: s7oosphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat(mbvzh9bx 6tb6w.lv.r)g)1 l n*bphfic equilibrium.

State Gauss's law.

  The charge carried by one electr,*lnr hjglos1p ou.b:z,s 0i: on 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. Ho63 :epp8i:iy2 6l tmvu8-v )iaapvn tjw many more protons than electrons does this piece of pi:aepvjvi p 8v:8l23n tu pit)ay6-m6lastic have?

  What is the charge on 1 kg a+ ctq8-i xwme-j85emof protons?

  An atomic nucleus has a ouao 4j q+7uvn4q -9tjcharge 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, ha5g 0wqzj /o0zb3xz -bqve charge values of 2.0 and -4.0 mC, respectively. What is the bz - og53q0/xjzwq0bzmagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcun5 gg(ct;io 0/ z)cnte between them is 1.0 N. 0n tcgg t(u5noz;i/)c What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 c3gt9vj;+io nN. How far apart are they?

  The force between a a9ybcn1h a+x6 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initig c5-rl:apww5 ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elecrcglp w:w5 a-5tric force between them?

  Three identical point charges of 2.0 mC are plj 0t5 zr p 6bq3b-desc1x7j5ylaced 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.3 ce16 z p5dsqlt7yb5rb 0j-xj 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 uxuvu 0x+00fv 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 mf0 vu u0xv0+uxark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located q y7 36ad qo/kjfyn-)ijy 5e 9tdo,:nzat the following 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 the magnitude of the force on the 3.00-mC):fo i3o 5/q7yzaqe6j9dkn-, jyny t d charge?

  A point charge of +Q is placed at the center of a square, and a sec2 meem5ltfcx2 ph2 4c(ond 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 charge42cxm(2cte52 hpml fe 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 n oqss,4/aj(aj C is at (0, 0). Wha ajo/sj ,as4(qt is the magnitude 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, 0fgyj.(k2a 7x7 m)xe :n a+yelx.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the netl.(axe7k:jmfx xy )+7gae2n y force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an: z*jk9h*ny ze/sl55rbq+g zn equilateral triangle which measures 30 cm on a side. What 5* lgyzbhn:s 5+zknr*j/9q ezis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh5z3g)4u lzhgf s *4rn/w,dbw nat point, on a line between fr 4u w)3ghznz*s,n5w/d 4bglthe 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 i;xg4u 1qgy 6sgs at x = 4.0 m. Where on the 1xqg y6u4; gsgx-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the 3 4p,re,*p (nnmj:i;belfnumorigin and charge -q is placed at x = 2a. Where can a third positive ch3mmr,jf,ubl:4 eipnn ne*(; parge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 gv-se1fza )(a ;tujo6i . 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 - ak005ult/er3eu d orrp92g yup against the force of gravity by the attraction of a fixed proton some distance above ioklt3r0 ae /grp0rue-9y25d ut. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from cj:u 4 m;r/bfda common point by nonconducting threads which are 30 u4f b:mc/jd ;rcm long. 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 charge of +40e. What is the magnitude of thafsnikr8 /3ln*d; o7o7roh (be electric field at a distance of 1.0 m from t7or ki fnorl(dn8a;*b/soh 37he nucleus?

  What are the magnitude and direction of the electric field at cbj+/(y- fkt 9thr -cwa distance of 1.50 m from a 50.0-nC charyh-c+t-kr(tb / 9wcf jge?

  A 5.0-C charge is 10 m from a small test charge. What ed0;xiech* w3is the magnitude of the electric field at eed ;*h0xc wi3the location of the test charge?

  A 5.0-C charge is 10 m from as3nab,*(m ekhbjp-izr 8s)2l small test charge. What is the direction of the electric3 r(ab -nsljh2)e8,z bsp*mik field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o 6 odc;lhbpt)94hnq fz30c,hef the force experiencebzf hlc 0q tp64e h)d3n,h9co;d 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 distankwa;/dgc r8; ice of 4.0 m. What is the electric field at a point midway between the t ckagd8wi;r/; wo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metk,mevly h575e f+l ku,er stick and a -4.0 mC charge is placed at the 50 c,v5 5+,u klf7lyehemkm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is place mh8x - g8oeu-nha16m0rfw;2 wma0mxmd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cmgn0-0oa6mwm8 m h8mfxrhe2 w-am 1ux; mark. At what point on a line joining the two 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.i; :sbqi.a, *+goxxck20 m. Whatgi+ics ,x qbko:xa; *. is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at kim /-we0x/uaen1 e-i the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC char/x- we0-n1 /eiumkae ige. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charg,bt+g g(43cig/twzsxes are 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 mC at (0, 1). Whagx,tgi 4 ( /tzc+sgb3wt is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mhs;on ws3zezh- 49p*nC when it is placed in a uniform electric field. What is the magnitude 9zn3zohnsps*4-;w h eof this electric field?

  A particle with a charge of 4.0 m/cy:b:;i0f/ep f anbc h/g:;s3 zvnnp C 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 zo( xd yk(7 /jzgx4+ydcv;ww +electric field of 6000 N/C pointing downward. What charge must be placed on the balld+z4o(j/7zw(gkw y+ dxcy xv ; for it to be suspended?

  A foam ball of mass 0nd)0)q,t5uv.t v v uhd.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the ma0.u,uqvvvd h)ntd5)tgnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of *umm sbb,jku5z0k2lb o;; s:r+2.0 mC. What is the magnitude of the electric field sol m0kusbkmr:;bj 2 ub,z;5*5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargec;wtje+ k/d1*e2 uhze of 3.0 mC. What is the electric field 6.0 cm froh w c/u;12dj+ek*eetzm the center of the sphere?