State the law of conservationq,o.qx1wa44 6bv3hokin ch ,q of electric charge.

  Is it possible for two negative chargz7f:df*p 5 k*ppb q,dkes to attract each other?

  Is it possible for a positive and a negative charge to a9e1:2u) ;hmcl,f h *-jlwmee)qxfzunl: *tlattract each other?

  A glass rod is rubbed with a piece of silk. Du;w lxs mnx5m(6ring the process the glass rod acquires a posi;6m( 5sxw lnxmtive charge and the silk

  A proton carries a

  The model of the atom shows *xy1w fige/x, a

  A neutral atom alway4su65tffa88bglb hn+h 0n /tss has

  An atom has more electrons tha+ xl0llz;qkbxn0tf p8 v3.8n vn protons. The atom is

  Materials in which the el62s31moly4zahnea j0d;y8 hd ectrons are bound very tightly to the nuclei are referred to o281;ezn jd yl430ayh6dmhsa as

  Materials in which the electrons are bound very loosely to6dtdv d,(tkt7 the nuclei and can move about freely within the mat d tdvtd,k7(6terial are referred to as

  A negatively charged gm-:f,ugeb ab23hy e 9rod is brought near one end of an uncharged metal bar. The,hby92g egb e3:-uamf end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nyr p-09tnf6zjbt lr- /eutral. They are placed near each other on an insulated tabl-6- by /9tfr0z pnrjlte. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged roduzvc f:wp5p:kc (0b9m charge an electroscope positively?

  An originally neutral electroscope is br3sk4c m*/g0hve.g temiefly touched with a positively charged glass rod. The evg4 /egkm0c3 sm*eh t.lectroscope

  An originally neutral electroscope is grounded briefly while a positively char maww-3a 8tvcp3zx*w+nm):3 l/awoxk ged glass rod is held near it.+3x3a wl z)p*k3-:cwn8wxmwomata/ v After the glass rod is removed, the electroscope

  A positive object touches a neutral electrir 77g shjwgwk fr(9+* gir;u/oscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to tg9igrk+h7wru; r /i*wg j(f7s he leaves?

  A large negatively charged ;bh o0ybmujk0:)l t,t39asceobject 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 3j0y m e0 hb,k9 tutc)aobl;:seither ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Cout(j m wq57 o7g0lck w9ev7w2kllomb constant $k$, which appears in Coulomb's law?

  Two charged objects arecx-ee:wnxmhw9gma lq 5c6*, 5 separated by a distance d. The first charge is larger in magnitude than tl9g6,m* a5x- qehn:wc mxecw5 he second charge.

  Sphere A carries a net charge an:up 4 :awlm(su6 n6go(e nl/lhd sphere B is neutral. They are placed near each other on an pnue:o(gm6/hul: s(a4 6 lwnlinsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cermz9jb3)bf8o yz7vio ;*ndrae5 bz 19 wtain force. If the charges on both objects are doubled withw;i8odz)y1f9r*3 jbm7ba5 ozze b n9v no change in separation, the force between them

  Two charges are separa-,6 ,wzd6py n/imy*m u iksr0g 2.mgt f9kvxc+ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual f k6m-. y*dw/69r x+zf,mtps, km n0gyii u2gvcorces?

  Two charged objects attract ea y1+v3daf0d onkuk d90ch 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 dist0n+kdd9 u3of 1dy0vkaance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are6 *q0id)x emtp separated 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 first el)m*pdq xei60 tectron?

  An electron and a proton are separated by a distance ofh0; l0lw :xwojt( jsps0 t6;4tgidz y0 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexsyliwt6(00;p4h sw gt;: d ztoxjj l00t to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whm:xwv*iizn :m h m;s-7at happens to the size of the force on the proton if thes;mxi-wm z nh*:m:7v i electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c0 //4 jorjeebihb 9ky.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 square's center. Now, identical charges of -Q arejjbeie 0r k4obh.y9 // 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 equilateral trianglehorknd; 2 ;n7q. 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 ao;2q hk7r;ndn t one of the other vertices?

  Which of the following is not a vectoyf 4fq;)/s z *izvqw-ukw 3so4r?

  At twice the distance from a point charge, the strength of the electrisw3xywk.:u 7e xyt i39c field

  Is it possible to have a zero electric field value between a negative czam4v1go)qa511 hr oyj er16and positive charge along the line join 1141 1erz yajhgrao)mcqov5 6ing the two charges?

  Is it possible to have a zero electric field value between two positivetxv.sy7oye qe9t5(l f(-2un n charges along th qu (2t.tsone7-9vy(nfyx5ele line joining the two charges?

  Electric field lines near psin9j8p5 p k0qmztive point charges

  The electric field shownla2m,-()z n9i 9t dqvev;8hv pju w q1*hfzlv0

  Can electric field lines intersect inyyn 3esjtx3r7sg o1+8 free space?

  A solid block of metal in electrostatic equilibrium is placed in u+gq 3tubx8jf8l8vu0 a uniform electric field. Give a statement concerning the electric field in the block's in8xj 0b+qf8 u8u3vl ugtterior.

  If a solid metal sphere and a hollow wb0 wk axv6b0-wymj3 5metal sphere of equal diameters are each given the same charge, the electric field (E) midxb3bw0wj5ma k-0v y w6way between the center and the surface is

  A cubic block of aluminum rwfq6/1zhw , vegu1v.qests on a wooden table in a region where a uniform electric field is directed straight uv uhwz/ve1fqw 6.q1,gpward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an ela pe6lxc uj7 0iq1r1fbp/,pdhj 2k.p 8ectric charge

  A positive point charge is enclosed in a hollow metallic sphere tsp aiyo4k35 oo7 nvh9(u/q(5c+(k r dmr9cuvchat is grounded( ona/ 5 r3v+o9kq cod5k (uv9ps (7chmyicru4. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibm.y 9nj7yn jr7rium.

State Gauss's law.

  The charge carried by one e0 lj, knna6.sqm0cw /ulectron 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 more proton(ej rm5 kf:u ix:06lrls than electrons does thi:le(fm56 x0 j ril:ruks piece of plastic have?

  What is the charge on 1 kg ofvkfflm ek1p hm4*4;i3 protons?

  An atomic nucleus has a charge of gp f1p*gw/ybcb q 0g-cia:)h,$+40e$. 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 ohl*ay-/j 6q/yq,m q npf 2.0 and -4.0 mC, respective- q jylq*nh/y ,a/pqm6ly. 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 between them is 1.0 Nj)qgzz- g0j) ic7i b+u. hbnaeg31la.. What is the magnitude of the se3n+a)ljbgi gqe- u0 b.izh) g.z1 c7ajcond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartnbnj7:x f0nzb, a w+0p are they?

  The force between a h0 rx hle7zhx/:x 7wt2$30 \; mC$ 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-m6 l3ng- u+cct7fw1w yN force. If they are moved to a new separation of 8.0 cm, what is the electric force between 3 wwmg6f71 -tn uy+lccthem?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha jo(lz9 /5lnr6e(ib ycrge 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 direct 9n yo6l/li(ejz b5(rcion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed ,ts7.0;*x bo 7hmvmrmcf4ehh on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the righv*cx o.t0r7s7e ;4,bfm h hmmht 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 located at the following positions: lnys- kq;f-c:7 gl33o3r jm ywe;x,t cQ1 = 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;3- t-3sflmn:jy3crqg w;y7,c exo kl 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 krm ,ri3d5 0dbvgv;)bi o /j5qpoint charge of -Q is placed at the 5;o k)qbigdjbr0, 3vv /d5mr iupper-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 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, 0m;tstm: .. kifvoidv7wzl. 59 .10 m); Q3 = 5.0 nC is at (7o vi:zt .f9kt5s.. lmdvmwi; 0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.307)zsj0 )gswzc miym; )qel5,o m, 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;,gz)jmlmi5w 0e7c)zo ssq) y net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera np-bou8y jrgo1ji 9v81kg.na7i. .kml triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one ok p8g7 9r ju.aonj.myog k11.iin -v8bf the charges?

  Consider point charges of +Q and +4Q, which are oj,)nfl 1 f sdi1+4kzeseparated by 3.0 m. At what point, on a line between the two char)4jzs,1f+niol fk d1 eges, 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 = 4.0 m. Wher+ g a6bxy esd6n(1+rlae on the x-axis can a third charge be p+ena6 6grl1x(s abd+ylaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2(b3gh33/s yy yn5m bfpa. Where can f(gy 3snbp3mh3 yyb5/ a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A kruw+zhiy /95total 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 wf4l t(69t nnaagainst the force of gravity by the attraction of a fixed9f walntn6t(4 proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads wiqbpy +6c +vmu*v hb.,3j /mouus:.ychich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apa .cq6ip.u*j3ms:/+b+m cvyoyu, ub h vrt 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 magnb9qwvh :x;ez a2 ivl5,5dvok:itude of the electric field at a distance of 1.0 m fromva;b,95ikh: z 5x2vql:eow d v the nucleus?

  What are the magnitude and dir/bkida 1(v1k qection of the electric field at a distance of 1.50 m from a 50.0-nC k 1ki( avq1b/d charge?

  A 5.0-C charge is 10 m from a small test charge. p9 62bamqa0c vhkjcn(2d*np d f4/m.j What is the magnitude of the electric field at the location of the test chargehp cdvcj j90df/a*qp42ab2n(nm .km6 ?

  A 5.0-C charge is 10 m from a small test charge. What is the directi0x h0yku 9os.97srb dwon of the electricy7 d0xk0ho .9bu9rwss field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ozw36z-m qz3 )it6d;auo;tm zif the force experienced by a 1.0 nC charge placed at the location of the test charga;w z-t3o;i6tm3 6izd um)qzze?

  Two point charges each have a value of 3.0 C and are separated by a distance ofjcu kh72w-e fo+jzs 3m5(g eif*nn z3sk6j2v 5 4.0 m. What is the electric field at a point midway between the two charges5zo 26+s5zj c3m2niefw 3nks v(-7j jgfuehk*?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a i e-3 ws*qo:vd2lx+qond a -4.0 mC charge is placed at the 50 cm mark. What isq v2l+- eo:qx3o*iw ds the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at t9 jf0 7aislzej yu-v*9he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linj 9v y9il z07*-asuejfe 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 = 0.20 mt.r t 0lu*vo 8(n(n5woblc6*tf( l8a dvjw7wo. What is the magnitude ot7 tu nw0.5o(w tc*wd l6v (8v8oll(nbaf*jorf the electric field at the point midway between them?

  Three 3.0 mC charges are ato:v v0 lpc;s87tb gu1kbe,-lt the three corners 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 center of the squarll8vv 7p-g : uteb;sc b10kt,oe.

  Consider a square which is 1.0 m on a side. Charges are place6dja p)snd zrtaw,8 zj3pw6/3 d 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 tw6ad)j8 a wds/p pjrz ,63zn3magnitude 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 uniform e;ajug ckqg rqg)-7: d5lectric field. What i5jg7drq -u g;a:)cqk gs the magnitude of this electric field?

  A particle with a charau34sq;ij w/ ige of 4.0 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 i3v5mzrr zkrh 42cs nq4y cmaa02 /9z:ls placed in an electric field of 6000 N/C pointingcnly0qr5r4c 2v h9m2 3/am :s4zr zzka downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ; ,4ops 7axsyuball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and ,x7 says4;uopdirection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu 7jg7qqg,+/evf7o -/3d.p gsfdktz d wde of the electric field 5.0 cm from theq .7+ts,e wdz/fk-vpq7o g/gd7g j3fd sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elec ucr;ag1/b6s5 fixz o:tric field 6.0 cm from the ce ou5sif6x; 1cgazb: r/nter of the sphere?