State the law of conservation of electric charge-jbvlwc pi*:c;,ug+y5)p h hhl 05 pkq.

  Is it possible for two negative charges to attrlcu;jg pi*6kagns :b 1;6wp m4act each other?

  Is it possible for a positive and a negatibeh g 6 5 y3zrabmpt25,jy1 0t03yofgfve charge to attract each other?

  A glass rod is rubbed with a pippto4ju)+gp m 5 fas43d6 lgv+ece of silk. During the process the glass rod acquires a positive charge ap 3+6g vpatm+ g)oldf54j4spu nd the silk

  A proton carries a

  The model of the atom show)p1p utnuoya;20z*dd s a

  A neutral atom always has0 g d j6mlso w9c 23bj9b7n/bun0enu9e

  An atom has more electrons than protons. The atom iawszr- 9x d1+zl1eo1 ss

  Materials in which the electrons are bound very tightly to the nuclei are rx vz5w+1-q pvreferred vwrzx1-vp q 5+to as

  Materials in which the electrons are bound very loosely to the nucl5,s.jbl r46wv. k/ lg: yencxrei and can move about freely within the n. rkl./ r6c j5vsw,egy 4lb:xmaterial are referred to as

  A negatively chargedbiyy*+x p n.coh7:q 7( xsd6yu rod is brought near one end of an uncharged metal bar. The end of the metal 6dyqu.ib7*yc + sp:xo(x nhy7bar farthest from the charged rod will be charged

  Sphere A carries a net posie o25wuyph t9g )3v5pjtive charge, and sphere B is neutral. They are placed neayup2 3hgpvtjew 5 9)5or each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electr5e3,0kg hx8 m5emmxqu n4 bwg4oscope positively?

  An originally neutral electroscope is briefly touched with a positivdp6uq: gl4s t.ely charged glass rod4t .sq:u lgp6d. The electroscope

  An originally neutral elect-t+ co )k0 wsoelcbyajm/;:)nroscope is grounded briefly while a positively charged glass rod is )n / wa+-k0)blcs:jyomt;oc eheld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lepe:xy2)c sdhsn6* t7oaves separate. Then a negative object is brought near the electroscop d*cn:h) 2ot7es yxs6pe, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat 2 8 ogihmyo0v)g/8kmred 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. W/vh 8y i8)mgo20romkg hat is the final charge on each ball?

  Charge is

  What are the units of the Coulv*5 bu) wcvgfph 9 11dduc/;scepb5+uomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger khe8d xc3i x4/i x 4xk8i3ecd/hn magnitude than the second charge.

  Sphere A carries a net charge ag 7 c(cjqh*7 ;ub5uynxnd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the ec*xy5j 77( hbg ;ucqunlectrostatic force between them?

  Two charged objects attract each otx*omoynvpek i9q +p./; /a5zrher with a certain force. If the charges on both objects areoppn;zm.9ke /aq *oriv 5/+yx doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual*yg 4hgb)wkmhcz -k* 7 attractive forces of F on each other. If the charges are sepay bzh kmw )7cg*h*k4g-rated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapaf1 192z/ffn8 w2s qu0yipnujpens 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 value? Ta2su 2jpn f1w 8i/fzfy nuq190he force is now equal to

  An electron and a proton ar :,;wcg wmntc3j 2qvrvk((jlb3*d.wge separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron vg3w m;jqgv*l ckcj2(bt:3w,r.w n( d is placed next to the first electron?

  An electron and a proton are separated b v9fr2hk ua+z.y a distance of 1.0 m. What happens to the magnitu 2uz.vh+afrk9de of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wiml ii ++6k(cihat happens to the size of the force on the proton l+i kiii(c m6+if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center lily7 ;4d ym4kof 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 the square. What is the magnitude of the net electrostatic force acting on the positive charge at the center of the squy4l7yd ik4l;mare?

  A point charge of +Q is placed at the centroid of an equilateral tr/w)*mrnusgx n,em /,iib;g 3aiangle. 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 other vertices? ,*3ugmws)g;/ /r mn,xbia nei

  Which of the following 8l++dqe ibf16clk 2ip is not a vector?

  At twice the distance fip fb+dy*ey6 nu* pj6 e0fis)0rom a point charge, the strength of the electric field

  Is it possible to have a zero electric fn g3rxi n-4*lda/x.meield value between a negative and positive chargnd* me /nx-3gx.i4lr ae along the line joining the two charges?

  Is it possible to have a zero electric field value between two posid,32joo:l. q9kp ,igb5 osx+m5r ytfa tive charges 5d32axij:sq5ko byo m,g+9, o.pf tl ralong the line joining the two charges?

  Electric field lines near psitive 9mvipcx :ovs)zy:u*(point charges

  The electric field shownb1v ;g*fgdw gla87rj/

  Can electric field lines r/t2kytut n z)9d k pax.sb488t(o;zxintersect in free space?

  A solid block of metal inp78 a dr s rdsks3xg u1a(1s00hvw;gi. electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interio wsskd.7;gd18hs 00 u13xisvraa (pgrr.

  If a solid metal sphere and a hollow metal sphere of equal di( 4otvyu3tiw :3zm8 akameters are each given the same charge, the electric field (E yto:(v4kmwi8a tuz 33) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform m: xaqd-7tfjz3u6uo ( electric field is directed straight upwardjm6 :(7- x3dozua qtuf. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric cha(:;k5f*posq 6t ijfvkh* 6 utv8x j4rjrge

  A positive point charge is en,4f9t vrn(h wiclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poi9nwrihv4 f( ,tnt directly above the hollow sphere has

State three properties of conductors in static equil nqgw:0no p*-r(cel)ey id.6gibrium.

State Gauss's law.

  The charge carried by q +9nvcvs(mq48k cqhl 6h;;zt one electron 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 habm9o)p:1p d q7 w:vxe*1ptl8wc ybe 3qs a net charge of +2.00 mC. How many more protons than electron1*1:wcq3 7pvxdb t8e:l w)epoym9 pbqs does this piece of plastic have?

  What is the charge on 1 kg of proefjva/ g/ 9 yxlc:7j9jtons?

  An atomic nucleus has a c) qnvj.yx ,r y0t57v u*wp,xfbharge 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 cmc*;m- q6zvmf d, have charge values of 2.0 and -4.0 mC, respe;-vc z6*qd mmfctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg0ike- j5lm ai)z/ -sine, and the force between them is 1.0 N. Wh) i-ksj-e /0l amizi5nat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them ofbzkj9f9dh0wd za1 yp4.m91yn 1.0 N. How far apart are they?

  The force between a cszsbrxo at/m4*: vqt; 8ypb*c 9m4 m8$30 \; mC$ 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. Ifralu oz q5kh2e4 0+-we they are moved to a new separation of 8.0 cm, what is the electric f2u-eakrh qlo e+z4w05 orce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. T-6bi6k1eh rv )) lpiru z4b1tdhe 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 direction141)lr-hbi r6)uv td6pze kib 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 ici 1 lkx453jktq h3 7x7;pmrcmC 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 olp x ch3q7ijmck r3475t1;kixf the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0- yf f(a g+)md fbcm982d;fjgs/iz)yk0 mC at x = 1.00 m; Q2jdf)i/yf8 + sgf 9(fb)gm ckzym2-a;d = 3.00 mC at x = 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 pla+ rq)xla 2v6pg4 fev/rced at the 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 t2) 4pave/grrfx+6vlqhe 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);(vt6w*eyzt7)zrntx my fo/mj z2g2 34 Q2 = -1.0 nC 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 charny yzev*z( t3m7m)2fz4t x 2t/6ojgwrge?

  Q1 = 6.0 nC is at (0.30 m, 0);sd+ezww+phvo;/ v 1 f; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of zh/s;ww+p 1vf o+;dvethe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral top r;s 60 m-zfe8 yokfi8pg0j5riangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whichsg68 8ro f;k0fmpp0yj-5i ezo acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what po2mjhcq25 jp f8int, on a line between the two charges, would it be possible to place a charge of -Q suchjq2c8 pjmf5h2 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 v,ns ay c)fp-13;jy rpu-m.bw at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on ipayrm,.1wn3j- uypbf- c; )svt is zero?

  Charge +2q is placed at the origi3i,t 9 lsv84fkqf5vixz5-yq j n and charge -q is placed at x = 2a. Where can a third positive charge +q b8-fl z3i4k, t fxvqvj5y9sq5ie placed so that the force on it is zero?

  A copper penny has a q6-j jgx68 prr5a wajg3- ys+jmass 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 attraction oinpj),) km z2m83 vkitf a fixed proton some distance above it. How far above )8pmvmt3n2) z kjk i,ithe electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncond)5-jqx pb3ywnn)+ihkqbp4exx 7e c e95 s-ud)ucting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweenqk)-)ypx xs4)bu9 xbn5 7wp-enee+jhd53c qi the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is thepz7.7cmg k4 t),wtle,,)vxfc s qm6qt magnitude of the electric field at a diszmkt,t7m,gc vf)6x, c lt wp4.sqeq)7tance of 1.0 m from the nucleus?

  What are the magnitude and direction ofz1lh je4vyub3 9c)o+ y the electric field at a distance of 1.50 m fro hc+ybo4eluyv9) 3 jz1m a 50.0-nC charge?

  A 5.0-C charge is 10 m from au:a) b+f-dmx+y449il, vhumvj g pz)c small test charge. What is the magnitude of the electric fb ap49my+xm+ufd) ), i:c4guz vvh-ljield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thene04bimlnt. o 0bl5z8 direction of the elenblniz0l8tmo .5 b04 ectric field?

  A 5.0-C charge is 10/ x:pmf+dhct+ m from a small test charge. What is the magnitude of the force experienced bd++fm x ph/:cty a 1.0 nC charge placed at the location of the test charge?

  Two point charges each h;9nqlc*-es * ::n1c5m fpypmczp/j* * e rtntmave a value of 3.0 C and are separated by a distance of 4.0 m. What is t*p nf1lce z5/e*tn:-cmnmpy:; s *9jcrmtp q *he electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a:c)ihp9(9w jzbrrmr / q1a o/mnd a -4.0 mC charge is placed at the 50 cm mark. What ir/m9mp9:carbiro ( 1/ w zj)hqs the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c9ntk okaz +qdy;ie(*)m mark of a meter stick and a -4.0 mC charge is plact koa*9kdyi nq;e+z ()ed 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 p.jeo6jq x( bds smbk*-g o.x-1laced at x = 0 and x = 0.20 m. What is the magnitude of the electric fieldsb -gbje6x .j1q.o( kxso -*dm at the point midway between them?

  Three 3.0 mC charges are at ()rc)t.tt5pryp5ygwdu, lp 7the three corners of a square of side 0.50 m. The layp.g5r (t t, )w7cd )tpp5rulyst corner 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. Charm3g:vz/ wfns1 v;ug+hk;v:j l-y)d fm ges are placed 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 magnitude of the electric fielu/zv+km; dvw 1):mjlys:g ;3nh-fvfg d at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pvd7kygk )zf:nz; w24 flaced in a uniform electric field. What is the magnitude kd w)zg72f:f; zvk4y nof this electric field?

  A particle with a charge of 4.0 mC has a m2zddt5d (s br;tcg) )pass 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 placbwk48lj6 i8f)svc :c+awo .hped in an electric field of 6000 N/C pointing downward. What charge must be placed on fwphjlak: b 6.84cvo8 +iws) cthe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placew 3r:ha 3c l)0vdnsg7td inside a uniform electric field, and is suspen)t gw 7n03:3lcs davrhded against the force of gravity. 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 uxij*)yr( qh- is the magnitude of the electric(ury*-)jqhi x field 5.0 cm from the sphere's surface?

  A metal sphere of rad6bf)8c l8gzzpv l/i u.z0qii:ius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 g qiplz0c)b88 v.i zlf /6:ziucm from the center of the sphere?