State the law of conservation of ebwpe pa: n4ts/k:u,9alectric charge.

  Is it possible for two ne;nvg0dfpx i* a yhqpo)3 a2m05gative charges to attract each other?

  Is it possible for a po3e r5ujbv lc-7el-,o tsitive and a negative charge to attract each other?

  A glass rod is rubbed withihz jy3tlkon.ahm8m 9i6*n, / a piece of silk. During the process the glass rod acqu8kmh i, ta3h9/*jmoni6z.nlyires a positive charge and the silk

  A proton carries a

  The model of the atom sho*x 45nzx yei8rkvge k7z/g4k5ws a

  A neutral atom alway pczz+jx6qh9yak24a f 79ki,ss has

  An atom has more electrons than protons9-amtqdd:56 awjb9m ffj:6 ix 10cwlv. The atom is

  Materials in which the d8f0k2b6m;t( khp xxgffua53r7.s g6gaubj* electrons are bound very tightly to the nuclei are referred to f8(p sgx5gtf7kdg.0u *2ufa 6rmxak ; 6bh3bjas

  Materials in which the k pzqkf qj42h83)g5mxelectrons are bound very loosely to the nuclei and can move about freely within the material are referred to5k3m8fzx4hpq j2 qg k) as

  A negatively charged rod is brought near one endyfq7am4968 s git4-etwjqn2z u nuq9- of an uncharged metal bar. The end of the metg89jq9n72t -4tn m6iezaw4yu suf qq-al bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, azetj*rz(zkb 9 r c35g,nd sphere B is neutral. They are placed near each other ok5zt*jgzez3r c 9b,r(n an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch;y 9mn5ayfu2m4tr7 edfjm1 x. arged rod charge an electroscope positively?

  An originally neutral electroscope is bz+(nedcob vn8(;b2c tc+-xlbe :4wbq riefly touched with a positively charged glass rod. The elec( zc+ b qnxcedntvob-w8 +(2eb;b:l 4ctroscope

  An originally neutral electroscope is grounded briefly while a:39 gz ghxdlu.ir:w/v ad2 xc) positively charged glass rod is held near it. After the glax:dvxg3 ich9.aw/d lr)u:2gzss rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. T5/b/x.nfvmpq hen a negative object is brought near the electroscope, but does not touchp.nf/ q/v5 mbx it. What happens to the leaves?

  A large negatively charged object is placed on an insulatiix z3yexhz -(lr..-i ed table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. .3er(i y xx-z- il.izhA 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 Coufw l8f1t gv6k)*p n;oflomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la ck+s.kmc:7aegdh8p:xm;9w kmn184koo )vrd rger in magnitude than the secod:rk:4d kag m.mkpcmh vx87oe +s1)8 wc;9noknd charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla h8avvlfp c860 jtk/4rced near each other on an insulated table. Which statement best descvvr kah fpl 8j80c/46tribes the electrostatic force between them?

  Two charged objects attract each other with a certain foric4n-3 vt1z)x 0pbb mwce. If the charges on both objects are doub biw v3x10p)tbn4mc-z led with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcej. /fct:yq:t6ai+utr4e iq n +q8 0kizs of F on each other. If the charges are separatec::it 4yntze +iq/jt8q6.fia q+0 rukd by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to 7x6txw35m ;d lu kxpk+the force between them if one charge is doubled, the other charge is tripled, and the 5;3kd x 6xpm +u7tkxlwseparation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a pro m q4)olr-g zl)53u6gl ai.ajkton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secondz la5l .j3iogg-au46 lkm)rq) electron is placed next to the first electron?

  An electron and a proton are separated by a di7slqx*ynoc6*mkpiglek x9 -w6v9 ,e4 stance of 1.0 m. What happens to the magnitude of the force on tnvkxoc9,qk*li6g9ye e-4 *ws m6x p7lhe 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. xzq)w 2b9uy2 a1pj 3kkWhat happens to the size of the foux yapb29q 2k3k)1wjzrce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center fjlvwy) )oe( m6 4mo(cof 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 cornersvc wl4)omym( f 6e(j)o 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 c y7un51g5;nqr:ij bbv m5cgy4 entroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, i;nmby5:qvcbr75 ngy 5j41g u 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 not4 nwau.4vi6yfmh7.ao a vector?

  At twice the distance from a point charge, the strength of flri)3mnmkk8 y(1710erqw hn the electric field

  Is it possible to have a zero electric field value between a nega wjhp9tif *5 dcpkku y578bo)0tive and positive c wkio95 u8fj7hp)*0dtpkby5charge along the line joining the two charges?

  Is it possible to havef, ct; er1v*9bwpg-ap8vc 3i i a zero electric field value between two positive charges along the line joining the bvr fvc,1;w9p -8ii3 p*egtc atwo charges?

  Electric field lines near psitive *:ohlvu xjuz ,.uy b/:6th*sb; rcx.ppoint charges

  The electric field s5skpmslodjf (. c;/j4hown

  Can electric field lines ihnji mf-k r(et 9i.-z6ntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifor( nryxyuf tzt,r)9x40m electric field. Give a statement concer 4)xr(ytfyru9,0 xn tzning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ead bten7m (47iekdw9sfka /it+o 5b6r9 ch givenoim6t79abnek i97 rebsdt4kd5f( w/+ the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifor.6l7c/3bubw1jk m vay m electric6wk/ ayvu b31j7.lcmb field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibfb/6p et;z 5cb drg-c ey,+r5j:vbkr*rium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere 6g*4g-xy itpt 99x,hr 7nq chfthat is grounded. A xi4h qth-996*gr g7nft,p xycs compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static -c*sxv /dip3nequilibrium.

State Gauss's law.

  The charge carried by one electron.9w3khf 8 n7y. xfygtd 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 charzqn9o3g;je a9 jmb 1wof2q37l b9z1doge of +2.00 mC. How many more protons than electrons does this piece of plast ql 7jobz93d;9fnja13ob2oe z 1wqgm9 ic have?

  What is the charge on 1 kg oj j1te.2htk9 esiz; nb9ulb01lz--wef protons?

  An atomic nucleus has a chargj z05d 6og:nxie 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,h1b0s zt nq 8 2bt21dkigx,(mw have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude k w,xbmzdt28 1inst(b1 q2 g0hof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweegcblm4nhla0 w9 4q+u)n them is 1.0 N. What is 0g4h+wbl qmlu9 nc4a)the magnitude of the second charge?

  Two 1.0-C charges have a force b*6r 6 .yl efvy1z ,k8rc x,,jfrvo0zjtetween them of 1.0 N. How far apart are they?

  The force between a aj t2.ea9.gp c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap-cf,t7en.ioei v3;ka art, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between th evo;.7nietfik 3,c-aem?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first c(pg i6x yj86r8iw+tm2 2hvo:x:a wivjharge is at the origin, the second to the right at x = 50 cm, and the thih p: 2(+xwiagv8j6 2mt:6 wjv8yiroixrd 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 mC g7 oys36e6ntx 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 direg syo6 67next3ction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posd(i7,v/l d3 d5dxq9yqan yt e*itions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x a v7q95dd3yy *xn, dqti ld(/e= 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 is31g 4-mqgz;m5ck:i 1rzuz erw placed 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 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-leftri1r z5- wu 1mzk q:g4egcz3m; corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nCewg lgu(6/,jz is at (0, 0). What is the magnitude of j/u(z ,wg6leg 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);ouaj ob vg:o(mg7 9.s+ Q3 = 5.0 nC is at (0, 0). What is the direction of the net m jogv:oo sgbau9 .(7+force on the 5.0 nC charge?

  Three identical charges ow;;o u 7ji5rqc-;nd3uzv6j obf 3.0 mC are placed at the vertices of an equilateral tri;bzvjd ;6 n5 -iu;oq37uj owrcangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sevuqbu,gp/34 fparated 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 force acting on it3pu gvb/,4fqu would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whe. rpvvky9 ;n:-lrb lp-re on the x-axis can a third charge be placed so the net force v-bpr;y-k:9p .nlv lron it is zero?

  Charge +2q is placed a gx gyi:(apf+ qz.(ow)f-my*5 hlry (kt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on iw5. g fk i( (agr)y-foh:+*q(mlyxypzt is zero?

  A copper penny has a mass of 3.0 g. A totalkt*yios. 9, su7 g8j. sw7jxod1t b1ul 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 b m0l jxt /jaz014-xxm z,bdb6hy the attraction of a fixed proton some distancel0x 1zb6jzmd-xh j/ab4xt m0, above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducti):.n zz kg9jz4dqm6/dgx7gvu ng threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion g)vu. nzgzkmg/ 74d jxz6:9q dforces 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 udity- )13k-erhdl :z is the magnitude of the electric field at a distanceez:d3-t h d1yui-)lrk of 1.0 m from the nucleus?

  What are the magnitude and direction xc)vfn1 maa6( of the electric field at a distance of 1.50 m fr)fx( 1a6amvn com a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What7):t 8.tddzk z)fncjl is the magnitude of the electric field.j:8zk) cf)ttnzl d7d at the location of the test charge?

  A 5.0-C charge is 10 m from a small te/q*-)(v fkfnhagjx n 9xq52uu y3dpx4st charge. What is the direction of the electricqu)xapk ud-q/9xhf5*( 3f n2 4yv jgnx field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ovx5j9tek :.b,;0pj qbk i1uhr f the force experienced by a 1.0 nC charge placed at the locati k05k.je ; uix,qtb:vhp9jbr1on of the test charge?

  Two point charges each have a value of 3.0 C and are s91;vkdzqdz m+jm1o u7eparated by a distance of 4.0 m. What is the electric field at a point midway between the z11m7 u z;vdjm+9oqdktwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mt( zy 7mxwu-u ,y;ar7.l9ghztah; +hkC charge is placed at t uzy a l (r;;gzh-ma7.+79hytu,hxw kthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm 6gt/ 4 sz9c/gy:k5j- og e fhkhee+od2mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a 9y :co jgsfh4k5+e ezkhge2/6 g/-od tline joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at qkb 1( sxs/4+ pbac+cgx = 0 and x = 0.20 m. What is the magnitude of the electric field at thb+sxka c(1 c bs4qg+p/e point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The lvcr 8(l+ x3mreast cor+ erxrlc8 m(3vner 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. Charges are placed at the corner:cyo m osd 71e+x8;jmys of the square as follows:1 mcoj8:yyo d;sxem 7+ +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 charfnpd 9h84nhz5ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudhzdfnh854n 9p e of this electric field?

  A particle with a cha 0sck6i*)ukc1nklv1 +t yek 4nrge 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 placed in an e g9t 8*6, h-ab;qkpchm y)ku,y7ubmzdlectric field of 6000 N/C pointing downward. What charge ,9q-tmym)bguzu;h pb*8hk dc6ak,7y must be placed on the ball for it to be suspended?

  A foam ball of mass 1xby5,q5cd2ex w b0mi0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude bi25x,xc5q e bmy01dw and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. W1vosd307b wwo;l4+v uip7 zpahat is the magnitude of the electric field 5.0 cm from the spherp7o;uz3i107pd4+vwvb s l owae's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the ewpcdw/jfc0b1r+:y4idq u 3 msr2c1iqsr )5/xlectric field 6.0 cm from the cencwr/i302f5/qdcb:m s yq1+4pcir uxw d)rsj1ter of the sphere?