State the law of conservation of electric chargd*u zjb-hgr,:7na -/ub 9f ampe.

  Is it possible for two negative charges to attract each other?mfm7-( yyo t9mxfcz bpx// 4v5

  Is it possible for a positive and a ndw7p0i*n7tr7 z1z qmeegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procb941rb t/r *1p34zg bljawac vess the glass rod acquires a positive /p9t bz4w1vlbrgjcb14a ar 3*charge and the silk

  A proton carries a

  The model of the ato q1 wd:u(djb, 9paxvw7m shows a

  A neutral atom always hwv gneq7vna) 7v6n( 81y-d gdxwa5hqj cp8/5pas

  An atom has more electronsfm 7.ceir+ 9wop ,mof9 -wp2le than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are re..+sg( i7n:x yspucnv ferred ts7c n.g+s:univyp ( .xo as

  Materials in which the e s:ibh8(gubih 3) nqrpy; r6m)lectrons are bound very loosely to the nuclei and can move about freely within the material are referred to arib;()y:)hb s3pqr umnih68 gs

  A negatively charged rod is brought near one end of an uncharged metal bar. Th jqc04*tyc/ coe end of the metal bar farthest fromco cq*/ 40tcjy the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ykfn wwc1c14,neutral. They are placed nea41,kcn cwwf 1yr each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelc.cps h( )4)bi3ext ibf:s :hyy?

  An originally neutral electr8rp czk i-.zi/oscope is briefly touched with a positively charged glass rod. Thz8/ ikzpr- .cie electroscope

  An originally neutral electroscope is grounded brieflya,k )k/xpp 7s ug6gx,v while a positively charged glass rod is held near it. After the glass rod is removed, th/ vpxxa,s7)ugkg6,k p e electroscope

  A positive object touches a neutr;rj5e *s18(qqh jvgr -0 iutolal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not toucr ueiqg(0lj or8;-5q1sj*htv h it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ya o 8i383j1dlc+mwu stable. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the pat +l1s3dcwui8yjo3m8 ah 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 ball?

  Charge is

  What are the units of the Cs /6*b ryglge5 a.eibhvg- takw10,3r oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge tgge4)o1v z k7is larger in magnitude than the second g4 )zk1 evt7gocharge.

  Sphere A carries a net charge and sphere B is neutral:npd3u ln*8+ 2p 60 fvmrskdcm3)ccnl. They are placed near each other on an insulatedl:unnc vd+ln)m32836c dfr0 pmsc*pk table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a ce 2m/qu 8*g +(wxzcrbne 5n-qzkrtain force. If the charges on both ob-qngw(nurb ez /k5z 2mq+8x *cjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces 5xik 0ha 3.dlzha2z0t of F on each ot0kalz2h t3.za5d0x h iher. 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 e; vffrb t(5n8,ww lm9dr 9/kgto the force between 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 for,(kw mv9 t;grdl e b58n/fr9fwce is now equal to

  An electron and a proton areo kazha)8 77nxipb,3t separated by a distance of 1.0 m. What happens to the mahapa k7, 83i)7zo bxntgnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa)yqq7 7dbk)zaz5 ( d0lldcxf9 rated by a distance of 1.0 m. What happens to thelf)zcd7(kqqz xddl7y0)5b a 9 magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are s:vw-,k s3t t7 eom4gzceparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protons- tkg :e7owv3c4 ,tzm?

  A point charge of +Q is placed at the cq*pck(kpst7u35 k2x m enter 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 squmcksu7qx*pp5 kk(2t3are'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 kasj+ yrz**in,9k g b s5973uhzbolg(at the centroid of an equilateral triangle. When a second charge of +Q is p5g (rb3l7**y oa9ks uhb ,zjn+k9i gszlaced 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 the other vertices?

  Which of the following is not a vectorx nbu6.2mm*kj?

  At twice the distance from a point charge, thvy9+xhp9mco a5f: b 5qe strength of the electric field

  Is it possible to hav.,mhzn sft: x.e a zero electric field value between a negative and positive charge along the line joining the two charge.t.mhxz: , fsns?

  Is it possible to have a zero electric field value betwee16b.z/ sg) fn7yqcsy wn two positive charges alofzyn/7y 1bgws. s c6q)ng the line joining the two charges?

  Electric field lines near psitive poih0a wm 4o1jg-xz-u wn3nt charges

  The electric field showvf : m5o-k l 4gdqyhtxo7/+6mon

  Can electric field lines intersect in free spa/xo uq*x 7;;f n u5-nk5oavgcvce?

  A solid block of metal in electrostatic equilibrium is placed in a una8o.xd e jc n*aitwuio.:w+ unpe 2-)l9zh4 n+iform electric field. Give a statement concerning the electric field in the block'spaoxenjch.le)- td4+w wuzn: 9 +2 a8*uiino. interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea5e.m5 +fxy: tjpvp7d wch given the same charge, the electric field (E) midway between the cen57p tv efx5w+: .jdpmyter and the surface is

  A cubic block of aluminum r2n y0e 9l0hhdwests on a wooden table in a region where a uniform electric field is dirne02h yd 9hw0lected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ell+q iv2f/rp6g ectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grou)dxzteehp07gyw ;+*a nded.+p ayx *d0;zeewg) t7h As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties ofsedipzbo8w6b f5kz.7+ou1*b urv75n conductors in static equilibrium.

State Gauss's law.

  The charge carried bye )5t/ d9ofchr one 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 charge of +2.00 mC./bgvw2 vh98ja( lto z) How many more protons than electrons does th 9)boa/8vw gz 2vjht(lis piece of plastic have?

  What is the charge on b8m3 f)rhr+-yf q1 gz:5npsc6pfbab/1 kg of protons?

  An atomic nucleus ha f7.dmj)dj vspwqfu ju6y3 -;-s 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 mr;mbb 3 4kf.mjgjm z;7rk0z9sC, respectively. b43zj;k0m.bk9sgmzfmj;rr7 What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bl;ozzzd;9s.j 1v 3 mrnetween them is 1.0 N. What is the magnitude of the second czzsm d 9z3.rjl;on;v 1harge?

  Two 1.0-C charges have a force betwe5 5*pm d(kiuhren them of 1.0 N. How far apart are they?

  The force between a 7 f0kodnfr nugzfl5,ndth 1+1;39rli$30 \; mC$ 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 force. If d.8ua akoqb8d5 w 17b7d-dqilthey are moveaubdkl1 8a -7owbid8q.d q5 7dd to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are . o:1 o1iw kbxezwc7si; od.l:xl 9vh(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 elect7 ixlwclbzwx9dk:ie (:oo v11 s.;.ohrostatic force which acts on the charge at the origin?

  Three point charges are placed on t.gwszycf:, 5rcd lb*.rd 5u .xhe x-axis. A charge 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 magnitude and direcd. zy cs. :f l,cdbr.w5gr5*uxtion of the electrostatic force which acts on the charge at the origin?

  Three point charges are lo5:xmboymx i n+r)3ap2cated at 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 n 2r):b+miy 5ma o3xxpmagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at t3q8 bue, em9of9x hwo/w,kw2 k iwi0/khe center 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 center charge if a third,kw2 ,fo9wwexiqhbim/u3 9/wke k o08 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.p;gmhw8,h *zm10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of tphz,gmm;h *8whe net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m f09ug5 2ztqi.d *wvcu, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net fg95 ufq2zi*0vdwu .tc orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices52yndyz (eh9e of an equilateral triangle which measures 30 cm on a shne9 e (zy5y2dide. What is 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 what pl,u3w -pf yxp )v5ym-gfhws64oivg-uffy6 ywp lm3p5 )-,h 4xwsnt, on a line between 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 or o ,3(+ll-ktuq2rxu* 8apgmu figin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed uqao* 28u r+mtuxpl lg,f 3(-kso the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed ammm4xh d g4tsms0ya* rk8c, -wff5*r+t x = 2a. Where can a third positiv,dfw-**m5mmxg tmy4s rfka4s+ rhc80 e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.vlp3 wi;.9nd w0 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 fo) mbzt1h.v )dprce of gravity by the attraction of a fixed proton some distance above it. How far above the eleb t) zh1dmv.)pctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threjzmshd8h 3 /czfr c(j89,wro-ads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle be88sorrm/9jc h(c- zdjw 3fhz,tween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is t9we:uaoft4)jda 0 l3q he magnitude of the electric field at a distance of 1.0 wuo0 3dj)49q:ata eflm from the nucleus?

  What are the magnitude and direction ofkklplo; rg 0; ca5-v8i the electric field at a distance of 1.50 m r l5pocik;v0lagk8 ;-from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude oiog65m+v vjax dh*g59f the electric field at thdmja5i56 v*ggvxoh 9+e location of the test charge?

  A 5.0-C charge is 10 m from a small tvhp84v xfj fhnq::.8 dest charge. What is the direction of the el f.4:v8xqh hfvp:dj8n ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the djd4x 9 p(v1)u3hyyehmagnitude of the force experienced by a 1.0 nC chep9uy1y3)(hjv d dhx4 arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated d1smr*crw t0 u.z(vjtj;/ 4 kuby a distance of 4.0 m. What is the electric field at a point midway between the two rs0t4j(k/1 *td vr;j.u zucw mcharges?

  A 5.0-mC charge is placetlkl7dlr7 v/ b+r h2-/dk6po id at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electt/-o lkl7hkv2rdp+r /67lbdi ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark oo0n em5 y*bjb7cslo18f a meter stick 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 zero?nom 87b5yjel 0s1cb o*

  Two point charges of +3.0 mC and -7.0 mC are placed a7y41eq-nwj v ut x = 0 and x = 0.20 m. What is the manvwy7u 4jqe- 1gnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at oaddgt,wrri d0 r c-d,-u8bl.2 6ilf; the three corners of a square of side 0.50 m. The last corner is occu ,02-w6o;-gfrl.irbdd a dci8l, dut rpied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on mzig 7xet vpo52;g s+:a side. Charges 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). What is the magnitude of the electric field at the square's center?o+7igz; ep2sx m:g v5t

  A force of 10 N acts on a charge of 5. );shhe. klk*t0 mC when it is placed in a uniform electric field. What is the magnitude of this electric .s hth* klk)e;field?

  A particle with a charge of 4.0 mC has a .z ob,w;2l cbbaz,ow t-mk-: imass 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 ui*fm, a b4f5lfield of 6000 N/C pointing downward. What chargeifua 45,f*l mb must be placed on the ball for it to be suspended?

  A foam ball of mass 0.(kpn :(0idb kl150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspenl(n k bk0i:dp(ded 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 mCs5;.v jwg ux9c. What is the magnitude of the elec9 usxw 5jvg;.ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm.bggzl.h,38bvdhdl+yn( / z4 oqv z,l carries a charge of 3.0 mC. What is the electric field 6.0 cm from the z48h,oh/3.bg+.vz,dq bly ( v nzlg ldcenter of the sphere?