State the law of conservation of electric chh6b itnsv)f;cu.s745 epl 2fbarge.

  Is it possible for two negative charges to attract each othe b-c4rh, idm.tr?

  Is it possible for a positive and a negative charge to attract eacsz6gjm,qc:p1 7z r v2ah other?

  A glass rod is rubbed with a piece of silk. During th7pf01 t9bykilc4f3w k 82xcj he process the glass rod acquires a posititxwihc30c7lf1kbj48fy 2pk 9ve charge and the silk

  A proton carries a

  The model of the atom shows k 2fx,/jz o;nw)2 e7hqirt/bca

  A neutral atom always hahisu3( *pfqjditxcgj b, aqg (418+/ a7wz;nxs

  An atom has more electrons than p ;yceab 43cub)rotons. The atom is

  Materials in which the el/.e g0qwea:9tfajypnh 9:ll e4 bl20uectrons are bound very tightly to the nuclei are referra40909 /eblgl.euflyw: p hanjteq:2ed to as

  Materials in which the el;a4.d-z pjr :pxqb 3fcectrons are bound very loosely to the nuclei and can move about freely within th4fa:;zdc 3 .bpj-rqxp e material are referred to as

  A negatively charged rod is brougmw.4:4)4 j7eqakkmty izx1h vht near one end of an uncharged metal bar. The end of the wz4.h:iy4j1 tva kxem74kq m) metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neu0r( -fu:xz(fm e8tbq8vtlj c9 tral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corref98lb8ttvfe- 0zcrmx ((qu:jct?

  How can a negatively charged rod charge an electrosc5i,v;maxa w *jope positively?

  An originally neutral electroscope is briefly to+9wot swcu3 e.uched with a positively charged glass rod. T .+tswwuec39ohe electroscope

  An originally neutral elect *uey cah(s,;xroscope is grounded briefly while a positively charged glass rod is held near it. After the glae*uychx (, a;sss rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves seft*dll/9n4e6h1ggdga( xx 1 jyf3e( lparate. Then a nelxt6 e f1led3g *fj9g1/nghdxa(y l(4gative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively cplrp- i-m )im8harged 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 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 bmr8l -iip)mp-all?

  Charge is

  What are the units of the Coulomb constantu (2+bxtw(6lcw6ngz u $k$, which appears in Coulomb's law?

  Two charged objects are separatefy ;0txqb*oym80 9harf f:(gtd by a distance d. The first charge is larger in magnitude thah9 0 tfqygrym(0 a*fbxo:;t8fn the second charge.

  Sphere A carries a net charge and sphere B is nelr(it-r 3p16 lp cal4tutral. They are placed near each other on an1 tp 3-pl6cir4tlra(l insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges(6/*uufa8u lpznki 3+xvnwi: on both objects are doubled with no change in separation, the force+nuku(/ a6f i8n*x v iwlupz3: between them

  Two charges are separated by avi; k: 7(yhwsc distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance ofwc hky7vs(:i; d/3, what are the new mutual forces?

  Two charged objects attract exs:jb1d.w9 :6+e kjl. xsyoj ,mvbnz.ach other with a force F. What happens to the force betweens e:nm.9bo. y 6lx.wbzvx+ j:sjdkj1, 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 by a distance of 1.0 m. Whatyj*fqh-6c4 c cld m*ngob-fb. c5.l3c happens to the magnitude of the force on the proton if a second electron is plabc-*.ogm3yhlcc nl5 -j fdf *.c64cqb ced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. W/5t0:eq nl8 pxl9etg4de*nrihat happens to the magnitude of the force on the 0e xnpi r:4eedt8l9/ *nl5qgtfirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 4nj 3nn(hm( vrthe size of the force on the proton if the electron is moved 0.50 m c3vn nhrjm ((4nloser to the proton?

  A point charge of +Q is placed at the center of a square. When a second*dxc*n b8j rr/n,kqv3 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 magnitk ,/cnvx jdrq *8rb3n*ude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed d0i 8 n irny2g. d wk;s-kmjy,-beei88at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vern- d 82ymye w ;i,bi-0kkd8engsj.i8rtices, 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 not a vecto)n o;7)gmgxl 6 sv,lymvln*e4r?

  At twice the distance from a point charge, the strength of the eiro nxr *2 +a8zbx76pwlectric field

  Is it possible to have a zero electri8 lhva 18g.ewjawl87 yc field value between a negative and positive charge along the line joining the tawy 1lale gj8hvw788.wo charges?

  Is it possible to have a zero electric field value between two positive c p5ia )auy2p;tharges along the lineap2t i; ap)y5u joining the two charges?

  Electric field lines nea;) w tvor .tjdx0jb.e/r psitive point charges

  The electric field show2h 0.uea ki.hdn

  Can electric field li ymn 9b2mgxnm/*q8v.8kvxeq qog 4y+.nes intersect in free space?

  A solid block of metal in electrosp gi,n*lbqzlxex;61 a:k;y2 atatic equilibrium is placed in a uniform electric field. Give a statemen pxxgn,1;* eb2a yli zak;l6:qt concerning the electric field in the block's interior.

  If a solid metal sphere z vgyn9 qk q+xs)1n,m-and a hollow metal sphere of equal diameters are each given the same charge, the elec +nq-qgk1)y, m9zvnsx tric field (E) midway between the center and the surface is

  A cubic block of alum 3n2)lr)fa oecinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface?2r )nf3la)eco

  If a conductor is in eq+,n +;7lqj .wi gg))h6moa uknpq7 qslectrostatic equilibrium near an electric charge

  A positive point charge is enclosedr;k p 41ry)rzt in a hollow metallic sphere that is grounded. As compared to the case without the hollow spk4ty rrpz1r;)here, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static e8kxnivj)e 6qi 3t+bb,f 0c1aou4 8ewi quilibrium.

State Gauss's law.

  The charge carried by one electron y5b2 7u x6porbis $e = -1.6 \times 10^{-19} \; C$. 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 mCe,9/+*sq zfh 9 rkukpc. How many more protons than electrons doepkh*9qf, 9esc +zk ur/s this piece of plastic have?

  What is the charge on 1 kg of pr: 7g tw+o9g+szwp/kj*n - kbhsotons?

  An atomic nucleus has a cha/sc6cdc1t ru:rge 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 valugt/ik q/.w 5fdes of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force k f/qiw5dtg./between them?

  A 1.0-C charge is 15kdjn/si8yhy 1k)c- ( b m from a second charge, and the force between them is 1.0 N. What isy-n8ijbdsh/c k(k)1y the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a yii.p3 wh5n06rk+xm(/9 1d alwb glucpart are they?

  The force between a fhqer 5we7(3agntf.3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N fotz/ 48q5kpy g-sfb:nr rce. If they are moved to a new separation of 8.0 cm, what is the electric force between the zs:q ptn4g/k yrb-85fm?

  Three identical point charges of 260 7- e jbjmeavaj3h;1upk me:.0 mC are 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 eleem036:e-jjaj ;a ubk vhem17pctrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placedp7am8ykf m7 a, at the origin, -2.0 m C to the right a a7 8,k7ymapfmt 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 ;ryzsv ueyjm3684,kbthe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 ;je83 b,y 6 vz4srkyummC 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 2j6n ri5gjy4 ocenter of a square, 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 c 6r4yj2ng oi5jenter 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 m7d5d4 ;heq quj); Q3 = 5.0 nC is at (0, 0). What is 7uq5 qd4deh; jthe 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, 0.10 m); Q3 = 5.0 mn :k1hhmd +1dnC is at (0, 0). What is the mmhh1d+d k: 1ndirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC,k xogd5luym t*mhqlj4 (2y5( are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any on2l*ut qgym4l((j5k5h ,y xomd e of the charges?

  Consider point charges of +Q and +4Q, which are seph c-3*.hq j+cbddw+jhac j,tssk;) z *arated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a cqh ; +w,zhdc j*ctjahc+sd b*k- )j3.sharge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origi:8(6hy acn 8+l.iqitjn c 4ifnn and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the ncnl 68tci :4+iqn ya(f.8 jihnet force on it is zero?

  Charge +2q is placed at the origin andkq v4t.7(g; m:h .ajmiuq1ovu charge -q is placed at x = 2a. Where can a third positive charge +q be plmu;oaq(hu. : igvkm71q tv4.jaced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of - x,yoo)ctxb ;blv(.r$4.0 \times 10^{12} \; electrons$ 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 fixed,i5 j pjv+yc).un6xmj proton some distaujjx v5,i). m j+pc6nynce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from at9a ua5v:w /ro common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forwtav5 uo9ar: /ces 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. Whawb)zuuq 7n9s,b*pj d2jb* cyt4v*sa ,t is the magnitude of the electric field at a distance of * b 7dwqauustyb4jv)92p ,zbnj* *c,s1.0 m from the nucleus?

  What are the magnitude and direction of the electric field attf b;4y( .tf))rmcvtc a distance of 1.50 m from a 504(fy.)trc tbft);c mv.0-nC charge?

  A 5.0-C charge is 10 m from a small testpd*3laxch) z. charge. What is the magnitude of the electr hx. c*p)3ldzaic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the +r+ jhfu85t cse +r+jh5su f8ctlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude tg 4b*g1 bfka5rx;t1 rof the force experien5 *fgb;r akg 1bx1t4rtced 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 arg g(ue2,0axo r7y5 g qhsc6-2epe0rn we separated by a distance of 4.0 m. What is the el wphn ag2exrur0 7 ceq,5s62-eo(ggy0ectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meteratvtoepa 3;j1r) rh6* stick and a -4.0 mC charge is placed at the 50 cm me*vjaroatpr;h t 1 36)ark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meterj 8wxj3g0pyk9 u 5)cfj stick and a -4.0 mC charge is placed ayjufwg893j5 )0kxcjp t the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of j8nmcm9y ))d mit/ldhoz7s7 a7v8s7u +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitum8 ia7o7jlmvd7)hcnm/8z 97y ustd)s de 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 0.50 m3j-2syqp x3ob:qe*cp . The last corner is occupied by a -3.0 mC charge. Find the electric field at the cen3-b xs3eq :jqp2cop*y ter of the square.

  Consider a square which is 1.0 m on al -1hdcf6tbruu; i.-+5 jk npg side. Charges are placed at the corners of the square asu.1gp dc+k-h ln56it fu;rb j- 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform9k h t*eym)*(ntxr,kpghp, zd;4y j1u electric field. What is the magnitude of this 1pxh,ktn yzrmdhj*k9eyu, g t*)p;(4electric field?

  A particle with a charge of 4.0 mCm gwszbl.rk)b7uj 4q-:9 f /usb)d:m n 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 pla 7aqz,gv-dzuz(5 wr4yced in an electric field of 6000 N/C pointing downward. What charge must be plawzq ,4( y 5dag7zu-vrzced on the ball for it to be suspended?

  A foam ball of mass 0.1529upc /l futhk t3; t;sdk xq/g4tgu8.0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, qd4hu ;c kgtstlk.9fgu8 /3 ux/p2tt; 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 5yf.byh;k9pk ee4t 0x-zr3 jn charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere';zbe 94xejhp5f0.y t3rn ykk-s surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electro +felph/ exeh(u 4bb 799ft7zic field 6.0 cmhxe(9uzb7/lt4hf+ o9ep7f e b from the center of the sphere?