State the law of conservat s,h;j3.2 eic un z7agr+metxa:16 cqeion of electric charge.

  Is it possible for two negative charges to attractxp :9+kvr 3i2 npgqienkuv26 2 each other?

  Is it possible for a poj3ur1be b:7 g0hfid82*qbbe b sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p2q/9xzvkxr.6wi4 jm* 1jkj iu.r3h wr rocess the glass rod acquires a jk43w . 2wk*zui/6qxjh19 mr xjvi.r rpositive charge and the silk

  A proton carries a

  The model of the atom x k+cmwp2yp8;shows a

  A neutral atom always houthll,(1f9w 9ncf4 )ec2z q has

  An atom has more electrons than protob-p8 *5cgyx1i/o ehk hns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei asyuly2(4b ,y4xf7rj f re referr rl fy7fb,juxy2(y44sed to as

  Materials in which the electrons are bound very loosely to tzi rm *luo is ah.,2vb x+*b)vz(.g7nk4gi;gl he nuclei and can move about freely within the mar n7g* +z2x4vg*.sb z vihoklmi ai.) (lu;gb,terial are referred to as

  A negatively charged rod is brought near on+xuvxmvb77/dg .my9* uuv2 fce end of an uncharged metal bar. The end of the metg2vv9u 7fb um7vd/ucy.xx* m +al bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and nu ewx2p,*x:g sphere B is neutral. They are placed near each other on an insulated table. Spherxu:p*2,x en gwe B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope puy)l,v:rotykvxy r1hc123- nositively?

  An originally neutral elz (4:pow*qvge lxr; r.ectroscope is briefly touched with a positively charged glass rod. The electros(4*rqw:r ;vozeg. pxl cope

  An originally neutral electrtxdeomq.x0-*2 yn7z9 x (p bk 0lduz:woscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is x w 0zydm 2 zx-e n9xlt0kqb*po7:du.(removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separ3nbr xx;0nlbzg;e xfdv(e,p5st 5g4 8ate. Then a negative object is b xdt,rzxsxgefne4 v8;5l p30(b n; 5gbrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ixzua/ e of1.a kc6x0u(nsulated 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 obje 1aukx.z6auxe 0 /c(foct. What is the final charge on each ball?

  Charge is

  What are the units of tz/476enczd 1jjoax: dfb4u7 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is large*k,kf cc43ol,;up/vuj* b+j x hsfn2bx (vek5r in magnitude than the second chapu, 2;s vc 3+xkvnkbeo,j (k luhf*/fbcjx45*rge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near eisn9 ca r.k95dj1aw, mach other on an insulated table. Whic99kc.m5 da ji, asn1rwh statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forcbd: mot *lm:+a3g4uuk e. If the charges on both objects are doubled with no chanmlg*k uduo:4bm3t a+:ge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv 3lp ,:f5mewtqe forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutualp,:m3qw f5tle forces?

  Two charged objects att,pp7. lmq3pfe xn, jw+c5n2ywract each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between the cn pwlym3,n,wjxfqe7pp + .52ir 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 1.0 m. What happens tcs2;a q g5hjc/o the magnitude of the force on the proton if a second electron is placed next to the firstcjsc/ a2gq;5h electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens toe/v p(9w,gpnrd)4 n ys 6turd 0f7j,qu the magnitude of thjed9)u7p, t (df4y0ur6 nr,gwq p svn/e 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 of5nk aj )y,cq0z zz8,um 1.0 m. What happens to the size of the force ,q8u) yc0zmak 5z,jznon the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pointprjl/w0p(8ov7m l,. eyi1yzg 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 chv/l(or , .i70l8wpepmjzy gy1arge at the center of the square?

  A point charge of +Q ismekn5 .qyvv0f;t*tlmpm6 7 i7 placed at 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 that acts on the center charge due to a third charge of +Q placed at one of the other vf tk.ltv0y6 in mpem;mv*757 qertices?

  Which of the following is pq (x1 eguve2eqy .9:cnot a vector?

  At twice the distance from a point charge, the strength of the electric fieldsq4g3rwg57ahv :m3d0re c4dd

  Is it possible to have a zero electric field value between a negative and positibtn py9x/e+- lj35u aqve charge along the line joining the two chargest+ - 9jupy/5anqxb el3?

  Is it possible to have a zero electric field value between two positi fscro3+u m e028i*u2lln6m qyve charges along the line joining th u6lm 2 0olnscqmr3euiy2f8*+e two charges?

  Electric field lines near psitive point chzcc2 7ot)b *hiarges

  The electric field shownx6.ohzex5w6pq 0h4am6 m+e o t

  Can electric field lines.qg i6: t3y 7dqu.lwrg intersect in free space?

  A solid block of metal in electrostatic equilibrium isjs-0f 0c p.8s+ 1*drvkzlv wpx placed in a uniform electric pl srvfs wcv.z0*jdkx08 p-+1field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete3bs/uf) aip, nrs are each given the same charge, the electriu s/ in,pf)ba3c field (E) midway between the center and the surface is

  A cubic block of aluminum res sn: wm/l4 zxio3+cstl(l lu wmb:.0b0ts on a wooden table in a region where a uniform electric field is directed lsl/0zmt:0 3mul wi+c lnw :bso4.(bxstraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eq/ ;ovrg:ndi b7uilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphcrfbfw2sm 6 -1,atkl/ ere that is grounded. As compared to the case without the hollow spc6lr,af1 mbk /t-fw2shere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statis: 2oht4-rn xwc equilibrium.

State Gauss's law.

  The charge carried b ljg,2.mdigm70 *jymv y 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 has a net charge of +2.00 mC. How many more protons tha,yy zml.n8q+hc; g ;kfn electrons does this piece of plasy,z;gml8fc;.k hq ny +tic have?

  What is the charge o*q*rp 7np6ef gva e09an 1 kg of protons?

  An atomic nucleus has a charge of :2cltlugiyamvof*qd58fdz (k i . *.- $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 vc)jm7no 3jg3(f 9y ,u fob7umcm, have charge values of 2.0 and -4.0 mC, respectivelyc fb7(y ujo )73gnvujo f,m39m. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second xpsxe d98*4mdcharge, and the force between them is 1.0 N. What is the magnitude of the second charpmedx8ds* x 94ge?

  Two 1.0-C charges have a force between them of 1.0 rymxju q90n8e , ras41N. How far apart are they?

  The force between a n:ow3qbu 7stv bqbac j0;k 306$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expeoyc)rc0:ypooe9y 0 z (rience a 1.0-N force. If they are moved to a 0or ype()0ocyc:9z o ynew 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-axis.2f:0ff6h uwfe 3i ir38jt(aav 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 electrostatic force which acts on 6(r3u h jiei8ffff3t0 aav :w2the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC i xc/,q-do 6ihe. w0aqz:zj cs7s placed at the origin, -2.0 m C to xoq 6.7s z-/adzch: wcj,0eiqthe right at x = 50 cm, and +4.0 mC 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 located at the following positions: Q1 = 2.00 657yqzl,srhiy+2ed)a j.i 5 a t3nvrsmC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m6,qyi va7j5hdry.s zl5+2a )sn e 3irt. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center bxd6d tv5ixjl-( 1.cw 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 ondc1v- xw(jldb.5txi 6 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.tlh0sp1 2k 2)efx:lpm0 nC is at (0, 0). What is the mam)xpftls ke20 21lp:hgnitude 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 mzrmxe 2hw-,5m ); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC cha5m r 2he,xwzm-rge?

  Three identical charges of 3.0 mC are placed at the vertices of an eq-unm,rol(s mvu9t q5 :uilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whichmrvls5 qm-ut, n9:o(u acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what po-6ry4sm.(rv wkji6o mint, on a line between the two charges, would it be possible to place a charge of -Q s6k r. omr- mw6yv4ji(such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig. 3jfwd+ x4jygin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third .yjf+dwgjx3 4charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2( qn wc+9u,bcva. Where can a third positive charge +q be placed so that thbcn(c+9vq ,w ue force on it is zero?

  A copper penny has a mass of 3.0 g. A total -q ux7ss l/m.xof $4.0 \times 10^{12} \; electrons$ 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 atttjnb1jkixi, t 9.6-l draction of a fixed proton some distance above it. How far above the lj.9 tj-ix ti16d bkn,electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductix-oh2u+e , .vb,(mvsq lopda,ng threads which are 30 cm long. Both are given identical charges, and the electd-, +vle uqv(h oxb,2s.o,a pmrostatic repulsion 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. Whatmrf,l nb;m8pz/ ynw(:k0nb , y is the magnitude of the electric field at a distance of 1.0 m from the nu8 /zlm:pknr0mw,yb;,n(n f bycleus?

  What are the magnitude an1 haw+ia (adu6s52ultd direction of the electric field at a distance of 1.50 m fro6 d(2 5+ta luhuwisaa1m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small t ecb 0h+ ,edz.+rg*xrfest charge. What is the magnitude of the electric fielbrh ,ed0 x.f+cz +rge*d at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dir5 qlunidh7-n an 4bae -sb3.h20t.ycpection of the electric q2patuc bbn 03hdn-7n 5yla..h4is-e field?

  A 5.0-C charge is 10 m from a small test ch.+e9 l9ay7 eikdjcc:narge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of t7y+cj eein k.c9la: 9dhe test charge?

  Two point charges each have a value of 3.0 C and are separat) g mr,/mmc1bned by a distance of 4.0 m. What is the ele,nmc brgm m1)/ctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meb xjc+:lg c muv ,at6-)+lxsy5ter stick and a -4.0 mC charge is placed at the 50 cm mark. bu5 t -l:xva y+l,+ jc)c6gxms 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 m4x.(f:wmj7lp8 sykt*oq z-tc,qrhk ,C charge is placed at the 50 cm mark. At what point on a line joining the two charges is the tzpjl*xs tc,qf(ky7 q,.4 o whkm:8-r electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x -s r+sf);0hy c/ jjkj;fws8kr = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwahj fs8yr;fk) s+-kwsjcr/0 ;jy between them?

  Three 3.0 mC charges are at the three corners of a squarezix1dp ekp(k6-b.3mf of side 0.50 m. The last corner is occupied byez dp pk1mix 3bf-.6(k a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on tst4.2;hrx6 nxd sz*ia side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at ;6*rh. t4sd 2xxzsnti(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 5a+rlc2 2 hjc8pjoq4w3.0 mC when it is placed in a uniform electric field. What is the 2 c3oc4 lja8whqrj+ p2magnitude of this electric field?

  A particle with a charge of 4.0 mC has a masslhtv0j* jzw hyu4d k/e0eut8w:8y; w: 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 electriu6ycp* y6x wjtj- ;gx9c field of 6000 N/C pointing downwardj g 6t;j*yxxyp-6wc9u. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.ftooacaz8g7 yr4, ,r.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravi,z7 o.a4cg8,oa y rtfrty. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge oo t,(6xrgd )wyf +2.0 mC. What is the magnitude of the electric field 5r,xgtd(o)y 6w .0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electries*(7bpt d u2yc field 6.0 cm from the center of the sphere?(*de7b2ut pys