State the law of conservation of electric cha(xa,642 usvomyx le*zaho + 6trge.

  Is it possible for two negative charges to attract eac/8z mt9y erp-atf+ox+h other?

  Is it possible for a positive and a negative charge t 2/uz4bxri g3to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rop6;ejoel8- w ,hb-s kcd acquire6ck w8jes;olpbeh -,-s a positive charge and the silk

  A proton carries a

  The model of the atom sbjo4 .ycg xt5;vm8pb 3hows a

  A neutral atom always ju(h muj;b h*-3:sqfqhas

  An atom has more electrons than pi(aeqd;6x wy 0aiduk)h(muu v 68z j-5rotons. The atom is

  Materials in which the electrons are bx8z7 df ah/ rg0 g.xtar9)io2wound very tightly to the nuclei are referre aw89o2xa/.ir) gd 0zfhrt x7gd to as

  Materials in which the electrons are b3b 8bgp;thbz; ound very loosely to the nuclei and can move about freely within the mater3;p zth8b gbb;ial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar* yxu4bs9irkzx:s4oe2 r* n4y . The e:sr yrexs9*xy4n4ou k2b 4*iz nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutraf m lfj1hawx f1y4x;/-l. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundedxh jx-myf/wa;41f1 fl . Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?):gz (gf ep8c;g h.bem

  An originally neutral ykqy+xgz y9n2j ;f91 : ty; 0f/fuiphvr0f*ohelectroscope is briefly touched with a positively charged glass rod. The electrosqxff f ;09/g*2tyjyphky 1:z 0 f+h9 vy;nuiorcope

  An originally neutral electroscope is grounded briefly while a pos; ) ih- z+4cfwl wimhlx:u1tj9itively charged glass rod is lhi;l )4w1-c:+ wzti 9ujxhm fheld near it. After the glass rod is removed, the electroscope

  A positive object toucvl-1*. zsc5abhh -rlpy 5:wl vhes a neutral electroscope, and the leaves separate. Then a negative object is brought vwa1l 5shh-*5clvl byzp-. :rnear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A ne,d.y5hwm 5juez j: u2outral 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 the final charge on each yjw5 5.dm :u2ehujz,oball?

  Charge is

  What are the units of the Couxuv) imdo2zzcgjb7:. 9/r 1u psa-4z alomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fk 7 i/vqeo2qr9irst charge is larger in magnitude thkiv92r qe q/7oan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They +q/rh uxfkm8;tn kaqg/zf+7 n5w,nj 8 are placed near each other on an insulated table. Which statement best describes the electrostatic form fn k8q /uz +7 nanr;kwh8tjqgx+f,/5ce between them?

  Two charged objects attract each other with a ce;:,qhiu3hhthsy u(eamc u :99rtain force. If the charges on both objects are doubled with no chanu;,c(ehh::ia3h9 htuum9qs y ge in separation, the force between them

  Two charges are separated by aetyhxdw7r0kfmc( 8. . distance d and exert mutual attractive forces of F on each other. If the charges are separated c ft hrk m8.yxd(w.70eby a distance of d/3, what are the new mutual forces?

  Two charged objects h7c l1bpuld06 attract each other with a force F. What happens to the force between them if one charge is doubled, the other charge i 1lubh0d6 lcp7s tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separar9/ 9ayt::drc2r osg qted 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 the first ele/qro rs:c 29d t:ry9gactron?

  An electron and a proton are separated by a distance of qy6 mp-2tlg;cz4sdv ud-vt)pa83h*s 1.0 m. What happens to the magnitude of the force on the first electron if a seco 3 vgv6shl8 t pa)ydzm-24spdqut*-;cnd electron is placed next to the proton?

  An electron and a proton are segwd;n;n ;rc ,h/z2 +i bcrui r,/zp;iwparated by a distance of 1.0 m. What happens to the size of the force on the proton if thep; zibw;ir;n 2i zn/hr+/c ,d ;rucgw, electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placedl9(0nuoab c9x/ io x-h 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 2xabochul0 99/-(io nx.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 square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. j0t zi xuf*w:pc81j+ zWhen a second charge of +Q is placed at one of the triangle's vejx wi8:fcj0+ t1z*z purtices, 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 vectoy i5n.o8cehqgd0jf- 7r?

  At twice the distance froi 8rhr nz 4fcpzru7yu3wi1j.z4 +mc/8m a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negativeiqwttf x(c09.jpg /9p1a(s xk and positive charge along the line joinia/9xitfqgw x 19.k 0ptpjc(s(ng the two charges?

  Is it possible to have a zero electric 8uz un8 . 2ff-b; i6tk)wbamdyfield value between two positive charges along the6kit ua f);2. wbnf8-du8z bym line joining the two charges?

  Electric field lines near psitive 7)+3c0gzqnt w8j) b inka (i6jlfndq7point charges

  The electric field shown5o n6z h iu;/r-him*ouohcf5(

  Can electric field lines intersect in fvc,p+n *j6)pl :tp vhmree space?

  A solid block of metal in electrostatic equilibrium is;neew b 17sq.g placed in a uniform electric field. Give a statement concerning the w7enq bes ;g1.electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equfhybc( lt*y:) 4/2mimom2 e,nsyipr( al diameters are each given the same charge, the electric field (E) midway between the center and the tmi2r:n)oym yf( p,2ilseby(h* / m 4csurface is

  A cubic block of aluminum rests on a wooden table ii*bkyyc -y8 7sn a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's tsy b*- kyci78yop surface?

  If a conductor is in electrostatic equilibrium near an electric chaz quj28u qm:+a;mm.k/jgf k*hrge

  A positive point charge is encloiq ;b+fuqf 6ale8( /ub erd,:zsed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere e8fr(udqq;/liz 6 b+aueb :,f, the electric field at a point directly above the hollow sphere has

State three propertieo3pl f/*( pl*m)trddls of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one eq:/b6 3b4owdk q+dfp ilectron 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 ha g2q*5 jm5xjmbs a net charge of +2.00 mC. How many more protons than electrons does this piece of plb*gmxj j 25m5qastic have?

  What is the charge on 1 kg of protons?w23 )s nz7.g bdtgt)xi

  An atomic nucleus has +dpu5rit3y /bv+s4c g-v x5tda charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 c 3y(fif,y ugnlr7s ;4jm, have charge values of 2.0 and -4.0 mC, r;yul g4 (s3yn,f7 firjespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second cx qyh0nwllnino3o / /u s; qrp7400po2harge, and the force between them is 1.0 N. What is the magnitude of t2 r/pupnq400l o0q/3n hyoxw 7l;oisnhe second charge?

  Two 1.0-C charges have a force between them of:4sg6wznqz: k 1.0 N. How far apart are they?

  The force between a ty (,wsi7/ uld$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inpmi5o0rr ym9i5wjamw ; (p7 )witially 2.0 cm apart, experience a 1.0-N force. If they are moved to a nmjm)0pwi7 y(p rw5o;w5ia9mrew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-b9 m2znd75klvaxis. 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 elect5d nm2vblzk79 rostatic force which acts on the charge at the origin?

  Three point charges are placed on ; oxnxigvmjsii2c /eu4y-6 *7the 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-ivisxj2e *cym nx ui7; g4o/6 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 positionsny pd 0/cff3up:1ggwz(z 9q(m: 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 the magnitude of th0ggnpp y1cz3(w ( f:q9dumzf/e force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poic fe,6i (qqyrw 6-)sngnt charge of -Q is placed at the upper-left corner. It is observed that an 6c)q-fwqrig(,e sy6nelectrostatic force of 2.0 N acts on 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); Q3 = 5.0 nC is a mp6o,j lgx 9wtajj38p-n y:fh-4x gb7t (0, 0). What is the magnitude of the net forlb :jp4g3y om6j, tw7ph8xfn j9-- axgce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at6 xz(.hsq/zlzj47/ p o6o cb3f3 juf(3spxx ej (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the 7 e63jsz3p 4j.xbfczx/ /l ux(hqj3f(s zpo6odirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC ap 9iz h8th4zw*re placed at the vertices of an equilateral triangle which measures 30 cm on a side.i98w4pz tz h*h What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4 p/bu,au ofprr3n.lpln0d((*Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be 3u a,d 0fpr.* lp/nuobl(np( rpossible 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-e e7wsyb 2mt+8C charge is at x = 4.0 m. Where on the x-axsw+tbe7 m 8ye2is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wcw 27oo: fwds8here can a third positive charge +q be placed so that :w7ofs cdo8w2 the force on it is zero?

  A copper penny has a majkb2, 4j,l ze79 hc uki(wjp:hss 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 of az)u (hqg )u6xa fixed proton some h)g z)6qaxuu( distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are huxma ssfn7o;*.j s o41cng from a 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 betw1nos4s;sc * f.jao7xmeen the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge/ hir.3i*d wtvhpoq6: of +40e. What is the magnitude of the electric f 6riotihq p3v/.w:h*dield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dis:bs+ x0quml0q6wu ze80wb2zm tance of 1.50 m from a 506uwm q0e+l bwmb8z:x20zsuq0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wu0,ky59hewes 5 d;galao /7. ab1kxeshat is the magnitude of the electric field at to ;5/ega1kxs9whbsel, ue0 k aa7 .yd5he location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is exam w,jk++; ythe direction of the electric f +k,wa jxy+e;mield?

  A 5.0-C charge is 10 m fr.-f2+1k- 4nedcmv9cscpgqlk nr/-jf/ :d zyqom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the lm -psd19/dfck.g q+nczk-2 cyf-r j4nl/:eq vocation of the test charge?

  Two point charges each have a value of 3 1pnid*7 3 sovyto.tr8.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two chargos8.1v3tyr pnd oi*t7es?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mCr94r i-xpcfvey . /rx. charge is placed at the 50 cm ma/cy 9.ep . -rrx4xrvifrk. 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 stin/6vak ; j5twtqg x3c(ck and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?gjtt /(wca 3;k qxnv56

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and u9+x.x:n tqiej*v .vdx = 0.20 m. What is the magnitude of the electric fiel.:it 9q*+x .u vdejvnxd at the point midway between them?

  Three 3.0 mC charges are at the three corne;2-oxxrs: p i/-iu 2 p0rrqijhrs of a square of side 0.50 m. The last corner is ocx/ 2- ojpris:rpxrqhi0 -i2;ucupied 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 f ads5h 6h5ze:placed at the corners of the sda5z h hef56: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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wxb3rkr626 qaw kkw: t-d b 8q+bl8k*ouhen it is placed in a uniform electr*qk62kw8 wa8tx-+k6o :ql3bdrbbruk ic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ha h9(n1ol vlweix/id )l-w,q8cs 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 ofp: *ggcq5m 1s)+vua yd 6000 N/C pointing downward. What charge must bed:v qs)cu*aggy +pm15 placed on the ball for it to be suspended?

  A foam ball of mass 0.1c;9ov1 c;stqy(lbb j 650 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and div b(sc ;b9yo61 l;jctqrection of the electric field?

  A metal sphere of radius 10 cm carries a chauol.fg3g- -0jqbu+ p9aykh)z rge of +2.0 mC. What is the magnitude of the electric fieldu+pukh- )y3o zg.l qfgj ab9-0 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wx nw wr.rh*.q5hat is the electric fiex wwh5q* rrn..ld 6.0 cm from the center of the sphere?