State the law of conservatioc:ksy-pn2h /p n of electric charge.

  Is it possible for two negative charges to attract each othj/ z 7vokfh.y k/julgf,:./pver?

  Is it possible for a positive and a negative charge :*khjmc- cu4rto attract each other?

  A glass rod is rubbed with a piece of silk. During:wvw-h -,ioqlafhd5 8 the process the glass rod acquid ,w i--vh58:fqoalh wres a positive charge and the silk

  A proton carries a

  The model of the atom sho)mgk ual (11qcws a

  A neutral atom always haoo fx3p j4h7e.s

  An atom has more electrons than protons. The at bv((0wca 1b9qpyfgw+om is

  Materials in which the electrons are bound very35,t g b/,-zx sn+rn yufpm2faz+q7yy tightly to the nuclei are referred to auz+ 2sr7ny/, g-yfxtfm+,b53nz q yap s

  Materials in which the electrons are bound very loo bgip0c4 jo,k.sely to the nuclei and can move aboutkb0p 4 i,j.ocg freely within the material are referred to as

  A negatively charged rod is brought-/y+,veq 9*w:dbo4bgsepu q f near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be char q,v*ps euqy+gb -wfb4:e d/9oged

  Sphere A carries a net positt3 paah,1nfrr3h+g;j d : y4sgive charge, and sphere B is neutral. They are placed near each other on an insulated tablgyjg1 rps 3nh4a3tfh:;rd+ ,a e. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posithijh*z2* zm px)u.k )tively?

  An originally neutral electroscope is briefly touched with a positivelluixjf9t z7 xxs 4 z,6fi ,*0qoq.oo(by charged gl.b4oq0oq 6ofs* i 7(xlxjif,zu9 z,xtass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively c)hfn-6za. lh/;:xixo nuk(mw harged glass rod is held near it. ;l:zioxwfxkhunm) h-./ (6na After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Th53 r41 yfmybak.mhp(k en a negative object is brought near the electroscope, but does not touch it. What happens to thy(y4k mr ak.p35 1bhmfe leaves?

  A large negatively charged object is placed on an insulated table.r5p4+by9cl2tc j lca- A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutra +54cr29c atj-blcypll 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 ball?

  Charge is

  What are the units of the Coulomb gnr;um6nv lx2f71b.vconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Th,6hvaxu- a)xg+vhw+ i8h 7 kere first charge is larger in magnitude than t6 +hhr8vuevwag-xk7+i), axh he second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near rqctu)wm56 e4 each other on an insulated table. Wh64ute 5)qmrwcich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.. my gcf z0xl0e2p7e/95gr scp If the charges on both objects are doubled with no change in separation, the force between thecm es.zlx57pg029ye/p 0 gcfr m

  Two charges are separated by a distance d and exert mutual attractive forces of5 5ub(6j 6y8gnbeyyyf F on each other. If the charges are separated by a dist6n5(5fyj 8y ue yb6gbyance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happenf8gn40k1z/8 pkgcg q 4mqi3l u47dtuhu9e b8cs to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reducb0e 4u 7k8 g/13h4pqcl9c f 8zq nukutgg8mdi4ed 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. What happs9 oey g:x*rh;eqh (7dhdd2l5ens to the magnitude of the force on the proton ifed5s(xh*gd 9: ;lryhq eo27dh a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What ysh h 11b9p+k p/aai8jhappens to the magnitude of the force on the first electron if a second 1abpa1 98kpji+ sy/hhelectron is placed next to the proton?

  An electron and a proton are separated b (-bjuh4. zearx(6tkl y a distance of 1.0 m. What happens to the size of the force on the protoea btk4 .xr6z (-uljh(n if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center ofx1raphcx via0 *j3+6x 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 ar 1*rx63x cxaap hv+j0ie 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 -o-kvu9mz7kg 5g gm0 pp0l xc)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 the oth70cgplm)-vg-x o0gkupzm 5 9ker vertices?

  Which of the following is not )d1i9o x j(eyza vector?

  At twice the distance from a point charge, j72w;r(cr6m w9 s -ya9ayzjihthe strength of the electric field

  Is it possible to have a zero electric field value ddplf52na8c ,6z6z 6hipv pe-between a negative and positive charge along the line join-i2ve866dd z ppphf65z n,lacing the two charges?

  Is it possible to have a zero electric field value between two positive charges g hm -*s*n,juoi0v+qk5k )qcwx g2vf (alovjc+k5x2sqm0ou)g(*q, f -kn* v giwhng the line joining the two charges?

  Electric field lines near psjvm8b*lfj dn46 e wsi9ql)/x2itive point charges

  The electric field shown 2ry 5-7y5xgmduiv.vf

  Can electric field lines intoj,;v,af/xlijq 6.b nersect in free space?

  A solid block of metal in electrostatic equilibrium is placed inbpb ypiky20/i3m,( jqz6sft4 c k3.xi a uniform electric field. Give a statement concerning the electric field in the block's i y/isb3zijxfm kct 0b.(qky623 p pi4,nterior.

  If a solid metal sphere and a hollow metal sphere of equal diameters44 w.) g*wm(hxj i -0btkaczox are each given the same charge, the electric fielgwok xwc0a )* bzij 4m(4.thx-d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regip3+a) fsp ehmki(v;1m on where a uniform electric field is directed straight upward. What can be said ch;sp( 3am1 +vk) ipfemoncerning the charge on the block's top surface?

  If a conductor is in electrostatic equ6 o7owze /b rmuz*x3x*ilibrium near an electric charge

  A positive point charge is e; v(vet(dzh9 wnclosed in a hollow metallic sphere that is grounded. As compared to the casehev 9 v(tdw(z; without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condu04r 1+ m vecvkthry :vko84u*.nou yt,ctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron vsscn+104 jur 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 protons than er1gn ( cp)p8yo7bbuc7 lectrons doepc8br pc) ugo 1n7yb7(s this piece of plastic have?

  What is the charge on 1 kg of pr vn( gc/ludo:z-q/lf) otons?

  An atomic nucleus has a chargg( y*)p.rah(r)lnaos e 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 c(b2irvw 8k kcfd9+a6f z.0fucharge values of 2.0 and -4.0 mC, respectively. W c frc82k +uk90adbfiw6(.fz vhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and r4w s 7s*.kptkie bt.3the force between them is 1.0 N. What is the magnitude of ti*. srk34 tbtpsw. ke7he second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How dap( d(, 9cyn qb(0hsq w8*hiwfar apart are they?

  The force between a : njyb*i8sj; a$30 \; mC$ 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-Nirwk3h3 o/.eq force. If they are moved to a new separation of 8./eok .rq3 iwh30 cm, what is the electric force between them?

  Three identical point)eu*yxi3-7 z l (ginx j*bl3cic3o tq0 charges of 2.0 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. Wx3czo3ex(ci) ub7*nl0gj ii -y3lt *qhat 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 of +2.0 mnpuv6 /td3 (bdk.iwrs +-*vpvk1 4kla( ye+nvC is placed at the origin, -(w6ptv(3vv*n+d-1 4k ksdv. uby rk+alnep/i2.0 m C to the right 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: vvgoe::zn: z9 Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x 9::ogvz ne:vz= 0; Q3 = -5.00 mC 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 thes8 r xyxzduap-)s v+l:99a( nm p8n0pj 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 th pa9p(zja)s-+p: ndr8xm u8l 9n 0vxysat 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 n(lce) /u; osw xtpr (jgq 2 -/wofyt()1ucg,ygC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chr / u/g)xg,gl(j pcwe)ot-uy1fw( qc (ts2o;yarge?

  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 ac1ge:*9b qkenwuvno g.q+ 2a,t (0, 0). What is the direction of the net force on cbg. *an qog2 :qewk+,uvn 19ethe 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera8 vh(jwj4v45ww2 rk:yx bg(+ jlsmq-jl triangle which measures 30 cm on a side. r 8bwg 4hkjs4w5v2 vj:jw (+qjx(y- lm What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ando9i;0zuwivasjrgd + q(2p 687;p rvsc +4Q, which are separated by 3.0 m. At what point, on a lrz67p+usrs;0 dq 8;jp 2 ov9a(giiv wcine 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 origin and a +9.0-C charge9 dng1rwj o:7c is at x = 4.0 m. Where on the x-axis can a t9o:17 nrdgj wchird charge be placed so the net force on it is zero?

  Charge +2q is placed a8a7 hyhl( q2cbt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed sya2 l (8hbh7cqo that the force on it is zero?

  A copper penny has a mass of 3.0 aptk0qjhloa,s)o/k 1qb6dfd;:l.f) 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 force of gravity by the attraction of a fixed4*ix(jy-2grktjy48h aq .m ps proton some distance above it. How fp.* 2 tk8mysyr-g( 4 q4jxahijar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n m l8eqba:cf04odro )3 vw2ik)onconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwevof20 w4:e3) cqo bikral8 dm)en 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 the electric vcu/l7n*3hrk) j,vozgs8b8 g field at a distance of 1.0 m from the nucleuo3nb sggvz8r/8 uj*vl,hc 7 )ks?

  What are the magnitude and direction of the electric field at a distance 1ihxj7)tr9 )ejbsguaw)1y: h of 1.50 m from ab)j17) ehsxtgu yr1 a )iwhj9: 50.0-nC charge?

  A 5.0-C charge is 10 )by*ga wgbpf9grc9 a)-ygb gz0+*su8 m from a small test charge. What is the magnitude of the el*9u8bggcyy+9 * -fsbg0w) g apbg)ar zectric field at the location of the test charge?

  A 5.0-C charge is 10 m b+mjey8yp26a8 ch tf*)qw.n m from a small test charge. What is the direction of the electribw *.e6q fap2mc8 yyt+)mhn8jc field?

  A 5.0-C charge is 10 m from a small test chadj qdpngum,m(: 892b y up4a5yrge. What is the magnitude of the force experiencednpmu aq u,md49yb(p5 2gj8:dy 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 dut6+hwrl) u ju)hswy6/y/y8 (wss8ua distance of 4.0 m. What is the electric field at a point midway between the two chargesjr l+8 uy8 )wydu/6wh6ussy wu (ths)/?

  A 5.0-mC charge is placed at thl 7cyu4r r syb5 f*/bv(0hclr+e 0 cm mark of a meter stick and a -4.0 mC charge is placed atbu+ r rcrvy7/ sl0cy (4lhb*5f the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargeq* aob d2:h :tyqnd y9k(9sf6q ist nsbkf 9:o(9qhdq6q:yay * 2d placed at the 50 cm 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 = 0.20 m.;o -v og-gcue*1o 1vfa What is the magnitude of the electr e*ov-afvo g1 -ug1c;oic field at the point midway between them?

  Three 3.0 mC charges l+k nkhip0;u8are at the three corners of a square of side 0.50 m. The last c+8kh0;ul pinkorner is occupied 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 a sidelw54 8nbr r :v00zkbyfmxo ,5o. Charges are placed at the corners of the square as follows: b45r, nowk z 8bvo5 0:ymxrfl0+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 chargez (6)fg/dcp(soqq b co .x+n9e of 5.0 mC when it is placed in a uniform electric fi pgn qf .cqc+6/z)9x bsd(oeo(eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass *e/ n *vtbyz l6 skq,r*)tm)mlof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is faxq:j7:frp iu ).t jd 57qx irc07gn/xa 6nb-placed in an electric field of 6000 N/C pointing downward. What ch/qxb7a ):aqr.ft 6j:idfr0 jc ni75g7u xn px-arge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries aj hi q wh7-l-lxk)5k9a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspende9 hl lji-x57 wkha)qk-d against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm car; cm,t)exq 8g//oxfhfries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from ;hcgom)x, /8t x/ ffeqthe sphere's surface?

  A metal sphere of radius 2.0 cm carr.r8j edda 81am dmrq0fv, e(2fies a charge of 3.0 mC. What is the electric fif d2 de1drv0 f,ea8qrm m8j(.aeld 6.0 cm from the center of the sphere?