State the law of con a7+zgo u4h )raqsa69sservation of electric charge.

  Is it possible for two negative charges8hm xy3fjs/m:o t84ir xdrs2. to attract each other?

  Is it possible for a positive and a negative charge to attract eax npoef51 u5:wch other?

  A glass rod is rubbed with a piece of silk. Dqd 2j;rfybk)g ++. wjjuring the process the glass rod acquydj q ;f.2 g)+kjj+bwrires a positive charge and the silk

  A proton carries a

  The model of the atom shjl 2bab+g32wz37 bsv zows a

  A neutral atom alwaysqjyb)dn.) mea c,+* qr1 ixcl/ has

  An atom has more electrons than protons. The a )i5+i.(of dfq 0(yxq svh9editom is

  Materials in which the electro(rl)0zykrfc)sp 3 s.ons are bound very tightly to the nuclei are referredsz0f .c( roy)) rs3lpk to as

  Materials in which the electrons are bound very loosely to th a7b8 dfan*b8pe nuclei and can move about freely within *n bd8ap ab8f7the material are referred to as

  A negatively charged rod is brought near one end of an uncharged mex3mmf38 s3 wjdtal bar. The end of the metal bar farthest from the ch fx3wmjds8m33 arged rod will be charged

  Sphere A carries a net positive chargnyx4ci c(7shi sl9-n dvn 9)s8e, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statem7x8hvc-i c9s4snn9(i d yn)slent is correct?

  How can a negatively charged rod charge an0e)crz.q8x9ycnv2 p u electroscope positively?

  An originally neutral electroscope is briefly x xu iiy8yhf)w6,:8 9ks37f+f cljtaw touched with a positively charged glass rod. The electysfa7l h:6 jy+w8 wf8 fu3x i9icx,k)troscope

  An originally neutral electroscope is groundb0lk k,o:os m8ed briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elec: b8 so0,mkklotroscope

  A positive object touches a neutral electroscope, and the leaves separate. The/oaqpv1f r:+rn a negative objec :+/qfp1rarv ot is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table)yljxqb9o b ))-f +ez4em,b0wyfd d) j. 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 n0byj wql4, 9bf-d)y) e)jmz)d boe+x fo 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 constant:t0t6 gt ix7lx $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chary.0)xp oh7c ,sn uv9dige is larger in magnitude thapi9hnu. yx csv,o70d) n the second charge.

  Sphere A carries a net charge and sphere : e 9qu5fab o9tn0gly8B is neutral. They are placed near each other on an insulated tab90aulgt n y89:o bf5eqle. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If th8f- .sw*+ 2nruxs8ff rkkw)gle charges on both objects are doubled with no change in sepa28rx +).8s wlsk gffnkfr*- wuration, the force between them

  Two charges are separated by a distance d and exert mutual attractt/ ehb+i1pp- ,t6hxq p;vbm0tive forces of F on each otheq /;ehbppt ixh6pm,tv-b1 +0t r. 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 t+z,p0ab+ h 1.qwkrewjzyvp2 8o the force between them if one charge is doubled, the other charge is tripled, and the separation distance between thei0+vbr yzq+ ,pwwez8 .1 p2hakjr centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separat1d x)- pmc5ad*kfv r ./mnpfa) /+gkf.n5ythzed by a distance of 1.0 m. What happens to the magnitude of hnmzp)ydavagmdnkt5.c *f5 1/kx .r p+ f/f-)the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance o.tg 2h6ywx wm)6:epkf f 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the2tf .p 6e:)m kygwxh6w proton?

  An electron and a proton ac8umpx0k6uhovbp+4 .re separated by a distance of 1.0 m. What happens to the size of the force on thexp uh0um+684p v.kbc o proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plama6g*p/j lj-6 rbpr1 aced 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 cpr/ -6 1gmabpjraj6* lenter. 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 at the centu2ligwd,,ni u) u;ppj0zb1 2c roid of an equilateral triangle. When aw;p i0 ,ujzcni) ,p gul12b2ud 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 other vertices?

  Which of the following is not a veg*g3d p(wayb)i4nyo4 na0o ,qctor?

  At twice the distanc8 :i5kus fm* y;.abc7wtde 8wewda3i3 e from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negati chxp jri;m -y* u4.g7zge)y(jve and positive charge along the line j(;r g* yujpgi7xmz-e4c y )j.hoining the two charges?

  Is it possible to have a zero electric field value between two bon;lnh(2d,lap3)4, z fcqop positive charges a, qbf,3hno (clp4ao2;p ldnz)long the line joining the two charges?

  Electric field lines ne4d wi.mpqgf11 ) srm1,lua,s3+yfoed ar psitive point charges

  The electric field showshw1ujk;k0o e m-(v w8sg s+q*n

  Can electric field lines intersect in fre4u9/,qcv bs9lro bl0ze space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elech j 47ap4 bvgt+ejk6r395ts:6 opapyatric fior ajp a +s34yat6p6: gb9pe47hv tkj5eld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are9x/7gr(cdzq ox(yts :t z 9ba2 each given the same 2:tqgsd(9 /ozbatrc ( 7xy9xzcharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a sxy0.qm b/m ;swooden table in a region where a uniform elm / sb0.qm;ysxectric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrkiz/c t +vlfr-m7n4*, 4aaawkostatic equilibrium near an electric charge

  A positive point charge is enclosed in a ho 7f.svr )zmwt6llow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere ha)r f6.tz v7mwss

State three properties of conductors in static eq90-)w*yvp;uq4(hrr kxgsbcz c3b ) yq uilibrium.

State Gauss's law.

  The charge carried by one elmooxy6 3g( :ylectron 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 chari 2j.e2ag e:ku n(y*ylge of +2.00 mC. How many more protons than electrokjey:.2(g*iy2 n ualens does this piece of plastic have?

  What is the charge on 1 kg of proih3yjc 11;j9wx4fja 3mvot x)tons?

  An atomic nucleus has a chao/ -g 0(zalav j:*zewlwxg 7x0rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1s4kb+qb byug z1.eo 4..5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitu .zgbys4u4qb k.1+b eode of the electric force between them?

  A 1.0-C charge is 15 m frou *4hfw7,jq ick 6yu-fm a second charge, and the force between them is 1.0 N. What is the magnitude of the seco hw -4 6*qiu,ykufcj7fnd charge?

  Two 1.0-C charges have a force between them2ir,bzqet: zr 99ad0 l of 1.0 N. How far apart are they?

  The force between a , wg /bh+ +0iek4wi: pnh/yojpf*7nxj$30 \; mC$ 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 dfjk6.1/yof2e 9hmcg/d e8 q fthey are moved f8dhm/cj1 ef dfy2 /k6eqgo9.to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 m8o+ v8pu,if5t sgqu)wC are placed on the x-axis. The first chargsuip88v tugf)w5oq+ ,e 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 at the origin?

  Three point charges are placed on tch+*kss9+qn e*-sjd nhe 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 direction of the electrostatic for s+dkqs 9*+es*c-nhnjce which acts on the charge at the origin?

  Three point charges are located at the 0;8y6cgn4 0q3c rfwrmowv s;dfollowing 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. Whrvfg0;;w8nc3co6dr0y sm qw4at is the 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 poinw/;vf 8zaen 4zt 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 8n vfa;/e4 zzwcenter 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);nl5b;l l)6 ogpj6i u.t Q3 = 5.0 nC is at (0, 0).lp ;ll gu6)t5onji 6.b What is the 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 y2cc7m .u 9 wft)1isnenC is at (0, 0). What is the direction of the net force on the 5ncws7tifu2yc 1e) m9. .0 nC charge?

  Three identical charges of (hj5 :g jrgur73.0 mC 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 5:g(jrjgru 7h acts on any one of the charges?

  Consider point charges of +9nw07d p;m-xsil9,ob *nuzsrQ and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on i slrs7onb9umw9; p,n- 0*xzd it would be zero?

  A +3.0-C charge is at the origin and a +9.q4rz6 hi-is lg c49xx.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on9i r-q gxl464csx.zih it is zero?

  Charge +2q is placed at the orymra5kdy m4 .pjon3m7; 1 f5wqigin and charge -q is placed at x = 2a. Where can o45;57w 1a rq mmykn.dmyfp3ja third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass z:bw ghwtx)0ek/s0ce zk1(g4of 3.0 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 asydf: +bm9k yg /0cy. jq4g(nk 0cdhp/gainst the force of gravity by the attraction of a fixed proton somdfj9k .0c y+m4g(y0hs/:dkngyc q p/ be distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung hcz(y/skd wln-s-6n4cc e(+k from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsio6 ( nhkeyc -cnskl+c-(dsw/4 zn 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 charge of +40e. What is the magnitude of the electricit y;f*juhhmp rz -nr5u/r6-6 field at a distance of 1.0 m from the nucleu6f trum5rnp-h rz6hi;*/ yu j-s?

  What are the magnitude and direction of the electric fieq9er 7 whan jma:)px72ld at a distance of 1.50 pe)xj q ana7w2:h m79rm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sm i20ql1q eei)t .e6o nq05vaaaall test charge. What is the magnitude of the electric field at) q.vioaa0 60l5 1tq2eiaeenq the location of the test charge?

  A 5.0-C charge is 10 m from a small test char4gsickh,tbx 5 .j0 4hzge. What is the direction of the electric field.bhc54i,ts4h0 g xjzk ?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudes,b(d8w 0g4yk7xq f wd of the force experienced by a 1.0 nC charge plac(q fg8w0y k7sb, ddw4xed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are z5w)e b32y:otn gxl uz *bn1z)separated by a distance of 4.0 m. What is the electric field at abyl o2x n 3zg:z*n)e tbzu)15w point midway between the two charges?

  A 5.0-mC charge is p8gw l4:b.r jw0ffo ev3laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the ewf0fj.g l834r bwv:o50 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 c:,ebet6mz8 y- gm e,jjharge is placed at the 50 cm mark. At what point on a line joining the two charges is the electricg6,tbm- ejz8m,eejy : field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x k1-d-ik/f yqwjv 3 /gdt4iwcoku1 ;w ;= 0 and x = 0.20 m. What is the magnitude ofq -dj icvu-gdko 4k3iwy1; /1t ;/kwwf the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of ,h oa;),7bpn(s3gc *pv srh*7ajzmtpa square of side 0.50 m. The last corner,*a(ppjhc b7psav)os t z7;* m,n3 hgr 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 side. Charges are placed at ttu1 6.g6),roieqf zk2 .vq0:.cvap di8naqhthe 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 magnitudc f1aa:qv p,6d.ez0 i6hq t)rko8t2q .uvi.g ne 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 unca ing *qkri3di j 8(sq*3k6lv0(hqu.rn6gs5iform electric field. What is the magnitude of this eles*3r0 ku 8n (gql jisan*k3cvq5d 6 (ihqrg6i.ctric field?

  A particle with a charge obq gktyp k7 m5 2zc04pr4u/jr0f 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 e0kz3tnw52)yx i/ih talectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to bti /25y )x3wnk z0htiae suspended?

  A foam ball of mass 0.150 g carries a chargl.-3bm1a jdxfv,mzha1bm kp iq.(e 86 e of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. 1hv3m1z6 m8 bxp.efil.aad q, -k m(jb What are the magnitude and direction of the electric field?

  A metal sphere of ra2y b*ah*q;sp jdius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the h **ab;j2qspysphere's surface?

  A metal sphere of radius 2.0 cm cazms9nbq q.+ wcj*x 3la6h(rrc ral+; (rries a charge of 3.0 mC. What is the electric field 6.0 cm from th *xr6w( bn lcm+q(hra+c3jlrs aqz9; .e center of the sphere?