State the law of conservation of ele:gjjawo- 8 fb m5ngl-8ctric charge.

  Is it possible for two negative charges tnpra5 ca578i(n ell,dob-sd; ,ea i1go attract each other?

  Is it possible for a positive and a negative charge to amk.h7iq :r* mf*e0hfcttract each other?

  A glass rod is rubbed with a ln24d,tnuz/cpiece of silk. During the process the glass rod acquires a positive charge and th42cunnlz/ t,de silk

  A proton carries a

  The model of the atom o3zdjfh3dhk j854 d/k shows a

  A neutral atom always has5sez +4ji qiz1nh +i5q

  An atom has more electrons tdj q6(hpq4 iy0han protons. The atom is

  Materials in which the electph3 0dpi mo08qrons are bound very tightly to the nuclei are referred to asd83o 0mphipq0

  Materials in which the electrons are e4lr+z) 5gmkvwvxsrtc( )++l bound very loosely to the nuclei and can move about freely within the material are r )5l4+rz+ )mvw(+rtksgcvexl eferred to as

  A negatively charged rod is brought near one end of an unchv.b vep9uiv su xt3t,(5..pqharged metal bar. The end of the metal bar farthest from thv5ie (p qv.sx.uhu9.bp,3 vtte charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra,atlgeqs mqq4 2v./zu g,+)2xm pf3iql. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whq. q, pi2) q,xq3lvust4+f2ga gemmz/ich statement is correct?

  How can a negatively rkt ngxdu *we.f p).2:charged rod charge an electroscope positively?

  An originally neutral electroscopj r 7i d3pd36frvn wei:t:*c q6*odp+qe is briefly touched with a positively charged glass rod. The electq3dwv :rd3: +ti7jo 6p *iqdn6e*fcprroscope

  An originally neutral electroscope is grounded briefly whilft*8xeb6sx )zig 3i y6e a positively charged glass rod is held near it. After the glasstf68 )3i bs*gxzei yx6 rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then*p7k )dodo b uou5x)5u0tr,zc ac*xr 70d 55puutd ok )buo)z,o negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is place4a9udnf, 2 iclen3 *sfd 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 thedc,3 efnnl 9us a2if4* final charge on each ball?

  Charge is

  What are the units of the Coulomb constant sn rri.*.+*evb+k*d1l s p m8q fam+gl$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firsnqtelh*,cquf(el/ )0gk: 2n -w hjbr2t charge is larger in magnitude than the second bw:h k)( ernc fjtql20-h/eug,q*ln 2 charge.

  Sphere A carries a net charge and qbeb j+8 fu5 4igbis::sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatfbb+ bsq: 5uge84i :ijic force between them?

  Two charged objects attract each oy yrm0z.,7n1utul ;pdther with a certain force. If the charges on both objects are doubled with no change in separation, the force betwe7udy lrz .,pnt 0u1ym;en them

  Two charges are separated by a distance d and exert mutual asl wt(os/:bhf/t:c /nttractive forces of F on each other. If the charges are separated byf:(t o:/n/lb cwhsst/ a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachfpr q ;; s2opx6nztk0./4amf i 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 distance between their centers is reduced to one-fourth its original va;4aorfx n;mt0q2 ip/ p.fk sz6lue? The force is now equal to

  An electron and a protrs q9k+t8 vyfng1n+e +on are 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 q89yvkr+ fent+ n+g1s the first electron?

  An electron and a proton are separated by a dg6ahlnqn5q( 7so 4 *nristance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elech(q* rg6 olsanq75n 4ntron is placed next to the proton?

  An electron and a proton are separated by a distance ofd5tjlft -, k5n 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 prkd 5t-,5fn ltjoton?

  A point charge of +Q i8yq pafz( (f:tmf.x(zs placed at the center 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 are placed at the other three corners of thxp t f(azq.: 8(fymf(ze 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 ivrayu q -wbm-l)rh4s0 )e*wjo(e 8q4vs placed at the centroid of 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 th4)u v)q*- rrwmhsyov (we a-4 eq8bj0le center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vectotwaluh t1 26r9r?

  At twice the distance from a po:j)fr us5y* ze)pld:kint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative an u 5ut.+xr(+ept lw4gjd positive charge along the li+er+(p54. wt xgtujlune joining the two charges?

  Is it possible to have a zero electri,j04g pmfq5 vm 3y,x )fhf;qjbc field value between two positive charges along the line joining the two j qmffgmvh ,0p3)yf;4xj,5 qb charges?

  Electric field lines near psi vbo 49noj19;yv1ktne tive point charges

  The electric field shbj bdfk2rgs:x+ +( b,oown

  Can electric field lines intersect in fi j;y(d 0 ychw)h5tsc5 gj4c:dree space?

  A solid block of metal in electrostatic equilibriumxy;hq-d 8zx 9a5ljdbl(v)kmg v(.q, m is placed in a uniform electric field. Give a statement concerning the electric qg db a8vh5zlqx j.ml (;v(m-9x,k)ydfield in the block's interior.

  If a solid metal sphere and a hollow metnihb.mu4 *v rza1;s/eal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cenme;* b.r/ins4v1 huzater and the surface is

  A cubic block of aluminnbk;+ + p+3nkyx +nvaeum rests on a wooden table in a region where a uniform electric field is directed straight upward. n+k+p kab3++n vnxey; What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosh89xma o;mm1 ntatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic l rgrzdl,cxx:)bp ,*,g3 ar 9/r1a kzn2l8flssphere that is grounded. As compared to the case without the hollow sphere,l)p9c 2bzx3,sa, l* lrg x,d 8nr k1rfzg/:alr the electric field at a point directly above the hollow sphere has

State three properties of conductors4 lo6 a(h;17cc g03/bfj (zbrwj xlnvh in static equilibrium.

State Gauss's law.

  The charge carried by one electron is w n9day::4nkvu c+q -rrc)o if5b7,tp $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charg u7g,j+-vs 2 ic*tvrmbe of +2.00 mC. How many more protons than eleutcv2 iv +-m rg,*s7jbctrons does this piece of plastic have?

  What is the charge on 1 kg of u6qv6z91m v3s oqm6cqprotons?

  An atomic nucleus hasuhr p2;9k.6 mbqcdi2v a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separ16g5o (t)jerof fht0w 8q5u quated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectivuf56 urwht1 jqof 8(05e)qtogely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secon-brqh eezocco 6zl08*ij*,; 0 ha*ulgh u/5 cwd charge, and the force between them is 1.0 N. What is the magnitude of the second charc0hoc6,h*/zaz chi*u8eu-lblg e r5;o0j qw*ge?

  Two 1.0-C charges have af+i lf5/r rm va;klk,* force between them of 1.0 N. How far apart are they?

  The force between a o3 opp( a28hli$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience aqopa2wqf3+ 7 a 1.0-N force. If they are moved to a new separation of 8.0 cm, what f2a wap+ qq7o3is the electric force between them?

  Three identical point cvch3eu;xpz f)) v 9-lmharges 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. What are the magnitude and direction of the electrostatic force which acts on the charge vxfcvp9) )e zu;m l3h-at the origin?

  Three point charges are plac.n+vwpmrq2 uo*m)g1m6 x uz/ped on the 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 n2/6u zr) u pgmmx.wmoq* +1vp+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 atx9lj -t9ufhiq)9/cs-0r7saevwu) l q the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m9v)x) e0 -9hall7-ujiqcst f9usw/rq C 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 center 1lt u elb4s98tof 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 u8l4eblst91t 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, 0.10 m); Qj97r z bx,wwek/ (iu9v3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on th9,zx7(ki 9/ vubwewjre 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 7a5 c5s*zj,eoh a3:-vrlq svc nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whaqcc3ov h7-z5s va5* :rj,ls eat is the direction of the net force on the 5.0 nC charge?

  Three identical charg2- -jl;szk/rpo ba co6es of 3.0 mC are placed at the vertices of an equilateral triangle wh-bpoolr6c/2 zaj-;sk ich measures 30 cm on a side. 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. Atja*wn;( eku 6p what point, on a line between the two charges, would iuj*ae;nw 6kp( t 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 orxdp82ohz r2ex 8qa /l+igin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be ple8r a/lpxx2zd2h +o q8aced so the net force on it is zero?

  Charge +2q is placed at th;ap/ub0 fm bj4e origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on ijp4bu0 ;b ma/ft is zero?

  A copper penny has a mass of 3.0 g. A total of w*.fn31gh tl97o3bhv: bbzff$4.0 \times 10^{12} \; electrons$ 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 ah9sr*c(iw3l q sktg+oa a, n1y anwyv4-0/,cwgainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protosr- ty*gn3w0a(sc ,iakq,w 9lo 4c1+v a/h wnyn?

  Two 0.20-g metal spheres ar,;j sz(x2t 3ddreosu7ijk(*q e hung from a common point by nonconducting threads which are 30 cm long. Both are given identical che7j;,udr2skd( zjts*i ( qo3x arges, 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 c jr/:by(n4boq9 x y;jyharge of +40e. What is the magnitude of the electric field at a db :q/jonyjry by(;9x4 istance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric5y7p 5rp4opk w field at a distance of 1.50 m fr p 5oy5r7w4pkpom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charzy8p9n o9+ri ege. What is the magnitude of the el9ey8or iz9p+n ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whawj04n ztxctjrp8 (1w8ua)*2)to g joat is the direction of the eleugat*a128o t)cjx0t 8rpw ojnj4w()z ctric field?

  A 5.0-C charge is 10 m from a small tesluq+kezc+ozr61 a0 *qt charge. What is the magnitude of the force experienced by a 1.0 nC charlr zcaq1*qu0+6z ke+o ge placed at the location of the test charge?

  Two point charges each y o1:jhqfkv6m:63vykhave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electrichv6 y:km ky:of613q jv field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 u 1viri.f3l2qosl2+cmi 7:w v cm mark of a meter stick and a -4.0 mC charge is placed at :sf7miv2r3cl+ 1 q.i wv2oiluthe 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 sti ( lkp)6q,lftrck and a -4.0 mC charge is plrftl,k q()6lp aced 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 pla pzfo5 :b.ebb9jksrh775 )dsnced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at ths9b dbrp z):f7.s5nhjo7k eb 5e point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.;ut)rppo1 q9r The last corner is occupied by a -o1)r p qr9tpu;3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.a smp98 rndovjr5n 3 jw55i+bx1 gtu1.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0pur nd a j9mgronx8w1ti155. +35jbvs 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 mylr f6cu,pbv5zy -p. (f*4dlof 5.0 mC when it is placed in a uniform electric 5.( yrf v6z* mpb-p4,lcdlyuffield. What is the magnitude of this electric field?

  A particle with a charge of cd(z /si.722vjsmkvw 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 is placed in an electric field of 6000 N2 q k ps872ogjg7vmgf*g8yo/ f/C pointing downward. What charge must be placed on the ball for it to be s /qf7g2o8of8*v7kgjympgg2 suspended?

  A foam ball of mass 0.150 g carries a charge of - v:c,d tgs 2un wi8jlyh6*4vedt (;au-2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. a scu(8y*vjig,:v h4 2-d e wultdt;6n What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnit ke 2r78* knchubm2os0ude ohem0ro2b7cn* u sk2k 8f the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ee8qm+cngf9xln4f5 o 0 lectric field 6.0 cm from the cente4xnnc 8l0g5+qeo9 fmfr of the sphere?