State the law of conservation of electricixz1k; l24 2xzeuqi;u charge.

  Is it possible for two negative charges to at3embd)(ak4 xbtract each other?

  Is it possible for a positive and a negative charge to attract 2i3a4qjj5 zoydf/r 6m (r alx0each other?

  A glass rod is rubbed with a piece of silk. During the procgf wv2z/gj;:less the glass rod acquires a posvglg; z2f w:j/itive charge and the silk

  A proton carries a

  The model of the atom shows 6n-5rk9 sqt bca

  A neutral atom always haslv, 9 fxi,u fv/y9/vvc

  An atom has more elexdhxjpaku/w) 10f l6pk/ 4vf .ctrons than protons. The atom is

  Materials in which the electrons are bound very tightlngj.l -qj22v1cw 7 tlky to the nuclei are referred to 2kgn - j71c.q2l tljwvas

  Materials in which the electrons are bound very loosely 6me;tri; 8+ 1qh pdylrto the nuclei and can move about freely withinr +m8lteh ;r6d1pi;yq the material are referred to as

  A negatively charged rod is brought near oaw51* rv hmpc,ne end of an uncharged metal bar. The end of the metal bar farthest from the pa*1rvh,wc 5m charged rod will be charged

  Sphere A carries a net posit:7mw-a,q jet qive charge, 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 wq,eq:- 7ajmtgrounded. Which statement is correct?

  How can a negatively charged rod charge an elect* 2vm)z47gz39n3rc uhqxq9 co7gm rtproscope positively?

  An originally neutral electroscope is briefly touched with jn7e .mo nyzh d( 7ahex1:5n:ja positively charged glass rod.(::7 znm5o dhe 7jjnxeyn.a1h The electroscope

  An originally neutral electroscu1(-1vrk*bs nlrft ue5r3(h 5c*mmxvope is grounded briefly while a positively charged glass rodhet x1 lfv(urkm 3 ru-5b** n1mc(5rvs is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lea,: oyb p:jyjd9ves separate. Then a negative object ib p: djj9,y:oys brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged ozv v3kq7p7 ha8bn1m6r bject is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but 1hnq 8p3vrzamkb 6v77stops 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 the final charge on each ball?

  Charge is

  What are the units of the Coulomb conz*6d zu) n4kd8g5qav fstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. hugc+/ em1; 8f/yw*uowj ;drg The first charge is larger in magnitude than the secondrou;g1ww*;f+ydeucg/ mh8j / charge.

  Sphere A carries a net lydjqcn* kwl. wn1 l7, b-4*pucharge and sphere B is neutral. They are placed near each other on an insu1bll - w * 7ucd4n.n*ljpkqw,ylated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each .8,o3phiyqp bother with a certain force. If the charges on both objects are doubled with no chaip,8.oqh3bp ynge in separation, the force between them

  Two charges are separated by a distan ep.(,xn+l eoice d and exert mutual attractive forces of F on each other. If the charges are separated by a distance o( pexol+n ei.,f d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens s-ttjs ezu/9/to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bts z/ 9-se/utjetween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of i.p-qviuf1 yu c h23,cr;8vmd1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the firmyhu.fd3i q 8p2viur;1c-, vc st electron?

  An electron and a proton are separated by a distance of 1.0 mnzz 2 enk(dx4-hcr) 7w. What happens to the magnitude of the force on the f7-h2wz(ne )c4dknr zx irst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of d0uh2bt )fa h)1.0 m. What happens to the size of the force on the proton if the elect2u bhf)td0)h aron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sec5ia7xop.s(oido(b yr gn9e 26ond 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 the squay e ar o6(xp7o5 bii.d9gs2o(nre. 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 triangle. Wh)a- p73tzovonz ujug 33o- f6pen 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 other vej 3t)nfu-zo o 3o3pa- 6vugp7zrtices?

  Which of the following is not a qf dk2w 28 v(xqag,u+wvector?

  At twice the distance pg.d1s9vkz0o from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posy3j;04k lqhr(8tfzy) 4qy c.pqdl h6hitive charge along the line joiningq4ylj(h d fqph)y.0lkzq;h 63 t8ryc4 the two charges?

  Is it possible to have a zero electric field 8dgc3 pfyou:* ia-/an wve(p-value between two positive charges along the line joining the two charges?8e :ow fcn(-aau d ip-*/3vgpy

  Electric field lines near psitivz65mu8/yhc6: px6new 2 wym r3cg8st ie point charges

  The electric field sho3r j 5u. uns) k.drxrh;9lwv9qwn

  Can electric field lines intersect in free space?g6 mc,q axpflg 4(*jp-

  A solid block of metal in electrn :8qgg-a8gn zx:8/a 5btmbe 15bcwwhostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thew:8mbb/h ng gq-ea8zwabg8 5 t1x 5nc: block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are et1 kv,h: tv+j,mnpst * jyv;r,ach given the same charge, the electric field (E) midway between the center and the su v;m:+yt,,kh1n,*svv p tr tjjrface is

  A cubic block of alu-ph +vweba//ekgz.bb,m+,x - r 1ope mminum rests on a wooden table in a region where a uniform electric field is directed straight k+zr1.,/ a - hexmp,o p/m-ebgvbw+beupward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr;i md 13qj a1(lbu8hjcium near an electric charge

  A positive point charge is en f0(ae7ndrb7i7p7ejn closed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direct7ni (70rea7j7bdnfpely above the hollow sphere has

State three properties of conductors in sumdpzk83 h6s 7tatic equilibrium.

State Gauss's law.

  The charge carried by one ele1,r )t)vjpf f-a/tf fmv54bzsctron 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 f.3)y9zu lp /kh7.lmvbq o j6p yv:sp.of +2.00 mC. How many more protons than electro )h v pz.:mpf7py.uol. s6q39/ ykvljbns does this piece of plastic have?

  What is the charge on 1 ktco.qnw 6it/vux81671b dwo v g of protons?

  An atomic nucleus has au1) ulpqo b-f9 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 7z x8 a5v*owr;9:*nlm esftsua8l/wq.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of /xzssmawun9 ; f* r*7 t5le8:qwv8loathe electric force between them?

  A 1.0-C charge is 15 m from a seconm h3ocrghof(a ;/4:1vjwd,iyd charge, and the force between them is 1.0 N. What is the magnitude of the second ch ywrdh/ : f1cm4g,;vjho3o ia(arge?

  Two 1.0-C charges have a di5;j2 st un,wno5c :lforce between them of 1.0 N. How far apart are they?

  The force between a j 8nvaj-f.* zikk..6pkyd p2 z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ink)9v ia lom a8)za5+zeitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whati9 ome+kzl a)avz)58a is the electric force between them?

  Three identical point charges of 2.0 mC are placed on t,4fb hjvc0gntir ,-mj,81 lgahe x-axis. The first charge is at the origin, the sec,bjmhj,r4l ,f-1 g ig tnvca08ond 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 the x-axis. A charge of +2.0 cvu nzuzp1b, e5e7 w*5mC 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 magnienzw5z eu5,71c*uvb p tude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges a*4oj pex5*bd lveyvmdi ( 0q3.re located 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 qy4e*(v.0 om l 5jxvddie3 p*bthe magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centerr6 3thtgwt -48n.eryn 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 th 6n8t.whry3tt-en gr4 e 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 6gu9 r,w /ez.uo91otkf; ox ws(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is te/6ko1u.g;f9sw9 w ,zuxr oto he magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.vpzwn9vq0c +7 30 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 net force onn97 +c0qzvvwp the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofn ws, h) x .o gj5z;9kw2svzjmzb9l*n* an equilateral triangle which measures 30 cm on a side. Whazmkvg2 jjls,bxns99.z *)5hwo w ;z*n t is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whic4/n8sgcw 2l k gu(qq1oh 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 thnl 21(kuq ggsqw oc84/e electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and1dgr ;ts0 )c 3hbf:a(shwh99vrxz*tv a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge:cbs9r03 1hvh f9*s(vt;hz) dgx rwta be placed so the net force on it is zero?

  Charge +2q is placed afl81w2fi)k yjt the origin and charge -q is placed at x = 2a. Where can2lffw ky1)8ji a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass-nb- 0j*pcro3w ass*bs za6j9 of 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 against the force of gravity by the attracbwvn9z8 6w so89o;lkpb3 e0ref 9mu /mtion of a fixed proton some distance above it. w;k96/ 8l fe 38bpomvmub90soerz9wnHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from f8o 7.kjahlen,onl j 172cikw2a q0/xa common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwee1fkl 0jnjq i /72hla7e2kx . cooan,w8n 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 electri r; +yp 9zhl,u,19vw dgvzq3lwc field at a dilwzdzvwl9h ;q1gv3u ,9+y,pr stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5zxq2 h0 yrjt9/mdic7xm:gz30 0 m fmi:q0yz 3/m09drz 2 xc 7jhtgxrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude orwin 0t(47nms /(d:mw)xx xt kf the electricxrxkisn(40xm w /)t(wm d:tn7 field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whbpx5-n8p9/ +56 wsup q hjvuzkz+.ploat is the direction of the electric fiel8+-zv 5hkquopn9b6p wpj pl5.xu/+zsd?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofw.j6+hd-c/1dzqfo vd(hu a) n the forc+j - .a(hzdw/vhd)u n c1d6qfoe experienced 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 a distance of2x-vsmwe. n4u 4.0 m. What is the electric field at a point midway between thv-e4sw u 2xmn.e two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 (;xou 1ltyrw stz7.;z mC charge is placed at the 50 cm mark. What is the electric field at the 30lzw 17(uoys tx;r;.z t cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC i6+7 oictf ca(charge is placed at the 50 cm mark. At what point on a line joi6f +aio(7ictcning the two charges is the electric field zero?

  Two point charges of +3.0 mC;r),hwn 5 wkg*x ztjh*n4q(sj7qn 7 ef and -7.0 mC are placed at x = 0 and x = 0.20 m. What is ther*z7 jw xj)kn,q;*h h7(gts nq5enw4f magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atb jf:)l2u53tqwd u-pb the three corners of a square of side 0.50 m. The last corner is of d5:p-uwqb 2ltu) bj3ccupied 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 s-03 2dh tng 7*d1 zpfgp7ycezoide. Charges are placed at the corners of the square as follows: +4.0 mC at -egc 37pdo g1fn072tph *yd zz(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 g4/ mlop 4u-vyon a charge of 5.0 mC when it is placed in a uniform electriyl gv -mpou4/4c field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a s w1g,zp1f6nt cp m3*,acmns8 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 q)d g0pa 17mpck-a+pvx hri -76 dmbk;an electric field of 6000 N/C pointing downward. What chargmc-6 a0vb m7;1i)ar7pqd kxdk ph p+-ge 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 nCvhqf09 u q*wi6( ksi,k. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dire f(6 u,iwhki90k* qvsqction of the electric field?

  A metal sphere of radius +hjt7-7vqd 6hf r-x ml10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacem +-7 tfxvqdl-r7hh j6?

  A metal sphere of radi u im9r ax05*-dw7l8awv uj/hdus 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sw/rl8i5 xdd uum h7j-0w*a av9phere?