State the law of conservation of electric charhu qik4/,2bf p+po g+lg g/)cige.

  Is it possible for two negatifcf48 6fvyf-vf.n e4m ve charges to attract each other?

  Is it possible for a pnrp d) xrkq0+nw:+ry 9ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proce.qj pors d1elzi;-qu 1p4k6+uss the glass rod acquires a positive charge and the silkuipr q+euk4joq- d s16p.zl 1;

  A proton carries a

  The model of the atomp vug6(vd;kdfqhta,z 5w/h 0 0 shows a

  A neutral atom always hasp glrz0p)ckrr72y6:k

  An atom has more electrons than protonsgm-g4r; 4,cgktnueiy-w) 9 r d. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refvqo n 3,;7er aiyl2gvjhu3wdyt u,4. 8erre 83 ly,n, ujv2r7dtye;w4ahu v.3gq oid to as

  Materials in which the electrons are bound very loosely p jv 0p/(4)mq7sdsshou4mmb; to the nuclei and can move about freely40 hdv47j s/)mpmsmsq(; ou bp within the material are referred to as

  A negatively charged rod is brought near one enc5shngd)rgv8ur g/3 xg x )t19d of an uncharged metal bar. The enhtr gn35xguc8r)d gxg/ 9v)s1 d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutra9 plemd0+rw; q+nhouw, kr5c)l. They are placed near each other on an insulated table. Sphere B is briefly touched with a5 +r;cq,en hr90l + pm)owwudk wire that is grounded. Which statement is correct?

  How can a negatively m *fmy ;bbme)px8xn+ (charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive vlr)upq 0,)naii7+ ty/ar6z xly charged glass rod. The electroscoppxilyiv+rr067t)nz u ) a a/q,e

  An originally neutral electroscope is g73ahvw.e148nmfdicmp - :wygrounded briefly while a positively charged glass rod is held nea :d7w3 8g. whnfyp1mec-ai mv4r it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, anxu66ut;bu i :ud the leaves separate. Then a negative object is brou 6uiu xb:6;utught near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on gq-bb9kv3 d0q 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 tg39-dvkbbqq0 he 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 const,o0zjq r:ep jik4z-1yant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lnnuk5d u77 tev ,+v2uwr74h tlarger in magnitude 27tw7vu 4knurelv5+7u dn t,h than the second charge.

  Sphere A carries a net charge and sphamy*xc3 qd.6r ere B is neutral. They are placed near each other on an insulated table. Which statement best descrirq3axdc.6y m* bes the electrostatic force between them?

  Two charged objects attract each other with a e2ggz,2qqo/2nh k*:gk 7uud a certain force. If the charges on both objects are doubled withk:g*nzgg2ue2 a7qohk q2u d /, no change in separation, the force between them

  Two charges are separated by athf3l:(l+js*jj mj qg0bw u; ) distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual for) b*tw(j usj:3 mq+gj;fllj0 hces?

  Two charged objects attract each other with a force F. What hapf i6b il: fs2(x29(xfp(*cf. r yqlv* h-jtxlrpens to the force between them if one charge is doubled, the other charge iq*.bshllxi y-9:(ff r (rx*2jp6 tff(ivx lc2s 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 separated by a disbak9c2q t +s5.zg jw8xtance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is2gsb9xjq 5.8+tzakc w placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.k(odg2bkd:iu2. w-d l What happens to the magnitude of the force on the first electron if wuob.d2( kdgd:-l 2 ika second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. ogo3c ;5ydq* zWhat happens to the size of the force on the proton if the electroog ;zd3 *oq5cyn is moved 0.50 m closer to the proton?

  A point charge of +Q isc2 mu-y5h4 f3y7y uf*b wd 8rzm;fj.pb 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 chargesbfmu ;4hz8ry *fy2ubcj md-pwf.73y5 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 a wz;a4u4d5p4 h obusrjgi1;z ,t 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 pgo ;b ;1z5uh4 d 4zrwuaj,i4sthat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is notr1zxozbg34 oq/,cd/mvqzu) n5d 5.tu a vector?

  At twice the distance from a poip p3yz)a 3bsy*nt charge, the strength of the electric field

  Is it possible to have a zero electric field value between a7jq-obc n1ev+6j yuc. negative and positive charge along the line joining the two chargc17 .j+yobn6qevju-c es?

  Is it possible to have a zero electric field value between two positive charges f k1(c+yzyb ewg51l0j(z) z9z8yd y fhalong the line joining hyzj98l 1ybew f)ky z0(1f(c 5zzyd g+the two charges?

  Electric field lines near psitive nglp(:jjm1 g 4point charges

  The electric field show ;nc q7/lhfyqwvff .r7:6fq/ tn

  Can electric field lines intersect in free spat *jirk*iy7( 7sqs5-snv5 oxhce?

  A solid block of metal in electrostatic ws5 iy):l-o r.,i,z8wqvh; s; cssojnequilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the ws.i5h-ncoi r q)sj :,8lvsyow; ,zs;block's interior.

  If a solid metal sphere and a hollow metal sphere of eqdbl-hu, daa 43ual diameters are each given the same charge, the electric field (E) midway between the center ad,h 34auld -band the surface is

  A cubic block of aluminum rests on a woo 3ikihh z:w3 gl+2s ii5hlj-*jden table in a region where a uniform electric field is directed straight upward. What can be said conce*h jkj5l-z:w2 +33lihigihisrning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near c6tgu-2e5s(;eded wl d 4d 9yean electric charge

  A positive point charge is enc e(awzbdfjbh)5kio* jm):p57 losed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollz*57ihk(mbo p:dj5awfb )e)jow sphere has

State three propertiergvt b+x a. ,hrl3;f;ss of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electro0rslxqm ( *k3jn 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/wg p2; zguq)xg+ il lv,mh4)u a net charge of +2.00 mC. How many more protons than electrons does this piece of);xgzu+pvwlgug, hqi)/ 2 l 4m plastic have?

  What is the charge on 1 svx* vx,wm n2c:x b8-ukg of protons?

  An atomic nucleus has a ch, byb7on s0zy.arge 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 cm, have charge values of 2.0 an gynr*sh +*wfica:g*0d -4.0 mC, respectively. What is the magnitude o*:h* ran*cy0+ igwfsgf the electric force between them?

  A 1.0-C charge is 15 mwa)xker+61t cv- ly, q from a second charge, and the force between them is 1.0 N. What is the magnitude of the second ch1x-)v6r lc,ay+ewq t karge?

  Two 1.0-C charges have a force between them of 1.0 N. +t, 5abk4p,9y mwhoacj y,r.aHow far apart are they?

  The force between a y+l5s/bclh0-e t5bm c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 (svewr8 +l ua.cm apart, experience a 1.0-N force. If they are moved to a new separatiow8+ alruve. s(n of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The . d99mxs(tgyz 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 magnitudezyms9x 9 tgd(. 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 mC is placedmpa9p4,mi8ul o r(c 8a at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC 8oa,9rcip ump( 4la8 mat 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 at the following positions: Q1 = 2.1xp ejk sjuwnu5/+l91vwo5 -u00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at upu/w5onju9 5 evk-1l j+wx1s 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 cenc kg5nvf3w9k3io . k,n fz1jp8ter 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 the magnitude of the force that acts on the cn3i8n59 1f, z kwkv.pckfgj3oenter charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q+)ag ktn g-qu,2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). +gn, tkug-qa)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 -/vq+u2f nc)jz kuci3 j5: r21xl:(wfr hsycp nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge r -5/z:+(c:3schrxup1cu2yqv jk fwf2)ljin?

  Three identical charges of 3.0 mC tvvj02 4h ,t.yaodd a1are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitu,j2 1vyad.h t0votda4 de of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated ix jizk. :*vj(6ow pincqk*w k-/*kg) 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 forcejk:k*i/z6iw . kk) x* cn*ojvi(qw-gp acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.bkxi+gu1k f5*3 xc59uujhyg ( 0 m. Where on the x-axis can a third charge be plach+c5* 1ik uxkg5j uyu gf(bx39ed so the net force on it is zero?

  Charge +2q is placed at the ori yq8f+5z/tu+sp jhgi9; e/ffao r1 tf6gin and charge -q is placed at x = 2a. Where can a third ro5 / 96huizf+ f;p+yf sf/etgaqjt81positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass *w8t3c hav,ipad,y,l1fy u 8v 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 uh 546bfh 7hyv)im/fw.pg3ffthe force of gravity by the attraction of a fixed proton some distance above it. Ho6f)hb fhvp.hi7 m/u w5y fgf34w far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common 55zf w 0*bduzepoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion bufw zed05*z5forces 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 m mxv2airv/u 7ryetj jr.k,3,ip3i39o agnitude of the electric field at a distane ,ki3 vt. ojirmryr,3vi29 37pajx /uce of 1.0 m from the nucleus?

  What are the magnitude and direction of xp0tl5l 8dho *the electric field at a distance of 1.50 m f 850*toxlp dhlrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chamn8yr-q9f2 h+arz1h n rge. What is the magnitude of the electfhnra +z2nr1 hqy-m98ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the v2 .75a u )j:a2slmxtsdfm/veelectric uf sd72mv:)s/.x2tvml 5aaje field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the n7wm(q3 3xfw kq :4ostforce experienced by a 1.0 nC charge placed at the location of the tes knqw(4tx7o:3f 3wqm st charge?

  Two point charges each have a value of 3.0 C and are separated by agn x*z+o:-o8n lp6uss40utru distance of 4.0 m.zps4to-xn sl*uu:0n8 6urgo + What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at t yb:h, u2lx*4 xn0tb jxedr,n52pbek8he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm5k*,2bbndny8,bu j:4 x h lx0per ext2 mark?

  A 5.0-mC charge is placedck)ii6n*ijdlr8 nr2. at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the nci2 kn8j*dilrr) i.650 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 placed at x = 0 and nfaf2u d7c8r9 x = 0.20 m. What is the magnitude of the electric field at 8cdar fn7 u29fthe point midway between them?

  Three 3.0 mC charges are at the three corners of a oj7vbq5-mx9 b*gaj3 vsquare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a-b xaqjgv75 o3*jb9vmt the center of the square.

  Consider a square which is 1.0 m on a side. Charges are - jwf;38lkxsrepvn-.placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mrjwx n-3;ls.8 ef-vkpC 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 wmkm2r 4gx8j*cnl 5l/vhen it is placed in a uniform electric field. What is the magnitude of this electric 8l2v/gmx5 m*lnrk j4cfield?

  A particle with a chpp c)9q rdyt,tm x+u5-arge of 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 plaixw0, 97k(2f kq1 jp jgwq)vabced in an electric field of 6000 N/C pointing downvxk 2waq( qb kpij97wf,g0j 1)ward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries u8;zie5 kg .whu5fpb tk)e)(qa charge of -2.00 nC. The ball is placed inside a uniform electric field, anh )wp8e.k gzube;(t)f k5 qui5d is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm oqy:x4nk0 8h ewgk i9(carries a charge of +2.0 mC. What is the magnitude of the electric f8oy :9e4w qinh kxgk0(ield 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 thbtj oyt6- (q3ke electric field 6.0 cm from the ce3(6kjyt obqt- nter of the sphere?