State the law of conservation of electt2m,-x25d rjomrg y7ckp; ihe-)ec6 l4nd le0 ric charge.

  Is it possible for two negative charr)tgkk: s, 5wr/i 3ijiges to attract each other?

  Is it possible for a positive and -t.yg5 (qbr71 l 0qv-dznsrtka negative charge to attract each other?

  A glass rod is rubbed with a piece of -ho5h /pl* cb-:zdcu-/ iwji rsilk. During the process the glass rod acquires a posihjbw-c r *:op dc z5i-ihu/l/-tive charge and the silk

  A proton carries a

  The model of the atom shq yob6 py30ez.w* xln.ows a

  A neutral atom always isgg6g r*pwm2gd .7s)has

  An atom has more electronoc55b90y l,d z/bj0 s8 ozokjos than protons. The atom is

  Materials in which the electrons are bound very tigi ttgpn 8-:w gwv;hv-*ey0d:thtly to the nuclei are referrye0vnwg- gv:w *d;ti -:tp8h ted to as

  Materials in which the electrons are bound very loosely to the nuclei andq z*,jsiin;q8q. dqy:s5)tpnu4f q 1. zuxrf+ can move aboutq .r)z;*xij4n:, q qudq 1s+. ipnfs8f5yuqz t freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged ku 3n.i1faju;metal bar. The end3.kn1if;a juu of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positivexz)o 7. i5hhlkgej50 y charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere 0h.5o57hgl iyxekz)j B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chaj jo1rspl.*-y rge an electroscope positively?

  An originally neutral electroscope is briefly touched w rwz3l53l6 alhith a positively charged glass rod. Thhlw5l 6rz3a3l e electroscope

  An originally neutral electroscope is grounded briefly while a positively charge*j bksv3/x.3hzo r9ae e9a3/sko 3 hrb.j*vxzd glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thehv.ij+fn dg 61n a negative object is brought near the electroscope, but does not touch it. Whatj+d hn16 .fgvi happens to the leaves?

  A large negatively charged object is placed on an insuhtc 7qz3.efy8lated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls 8 tq 7y.fh3zecalong 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 Coulomb co*82 7ee( cxvnzoy ss*ed1l cd:nstant $k$, which appears in Coulomb's law?

  Two charged objects are separatnc3j )3b.kdz 8 o5rkkied by a distance d. The first charge is larger in magnitude than the secjnk5z 3bckdi8)3 ko.rond charge.

  Sphere A carries a net charge and sphere B is neutral. They are piq 8d7p/l n 90wn,wkeblaced near each other on an insulated 0n7pek/ n, qdiw89bwltable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fo ebxy1yp bo)izm741svy2, +s iyvho 39p t8eb8rce. If the charges on both objects are doubled with no change in separation,e b9 b+8i yp,tzy4oi182eobypv) s h vm3y1x7s the force between them

  Two charges are separated by a distance d and exerv/ mc w29wd22ip :* thoglr)xk. ur-qct mutual attractive forces of F on each other. If the charges are separated by a*t whgo/ 2u.c9 lwr22ikx)mcv: qprd- distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thkur7)k9z4mg .emydwp 6pn 3 b).8 xte 8jagrh4e force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers i 8 9u3yp z d7m k)jerghbn)6.xa.8pwg kt4rm4es reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separatepiunkow-1j.m- (7rfdd by a distance of 1.0 m. What happens to the magnitude uni- m 1rjdop(.w-f k7of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What harnz/7qs knt) ,ppens to the magnitude of the force on the first electron if a second elecq st/7rkn)n ,ztron is placed next to the proton?

  An electron and a proton are separated by a distance ofh -,u mid2*tb i.fqa8w 1.0 m. What happens to the size of the force on the proton if the electron is move .2h-md wqab i8uitf*,d 0.50 m closer to the proton?

  A point charge of +Q is placek+s5c+j -+0 mo no/(z+pym/ugag nvxed 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 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 -jszn cg+uovn0mm +++ g(/oeap/k x5yof the square?

  A point charge of +Q is placed at the centroid of an equilaterr+ q hbut* eflz*f3,,ual 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 thiruf htzr,*leqb , 3+*fud charge of +Q placed at one of the other vertices?

  Which of the following is not a vzyx4( fo*yxgh37q 2s:zss -i aector?

  At twice the distance from a point charge, the strength lie*vdn9u nybv; 8 w3 +2pu5(*qawtbxof the electric field

  Is it possible to have a zerp:4n qz0ca :i q(w rxyg/d;i3vo electric field value between a negative and positiv;r:d0 p(in4cv3/qxy:wizg aqe charge along the line joining the two charges?

  Is it possible to have a zero electrj 4g/10jdb18lcr erhoic field value between two positive charges along the line joining the te jo0lh8 g1/ jb1r4drcwo charges?

  Electric field lines near psitive poisid; w6l o8rk*nt charges

  The electric field sy,f.swxubjsu)0ax n/+s4pe7 hown

  Can electric field lines intersect in freez z+falh/9u 2)* o vkpz(tcd2w5n1kxw space?

  A solid block of metal in electrostatic r *y)w2zvm/ fk43u +vgcrl-q4 *evtbdequilibrium is placed in a uniform electric fzq w/ v4 ylt3 mcfeb+*vrd -k4vg*)2urield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ecbb88 ooaj/ w 46.hyuqach given the same charge, the electric field (E) midway between the center and twyuh 4qbj8/o c .oa86bhe surface is

  A cubic block of aluminum rests on a wooden d 3aw4xb2k(qjk,pmy .table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top pb. a x(24k3m,q ywkdjsurface?

  If a conductor is in electrostatic equilibriu);myt p 7f. b+sd0+cmvwbvf1um near an electric charge

  A positive point charge is,2azfnn*mk:64r ) nq+b(vjv.xq faqn enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, thef z6+ nqaq f.(b,qan ) r4x2:kmjvnnv* electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibr-i ebfk lk(g 88k9h5hu 9ruvv0 u+(lmvium.

State Gauss's law.

  The charge carried by onu-f,ui;u g tt-e 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 char r 2xgm.ysc+v)ge of +2.00 mC. How many more protons than electrons doc.mv+yr )2s xges this piece of plastic have?

  What is the charge on 1 kg of protdm6de 5im;.srons?

  An atomic nucleus has a charge of +hy mbq0f4 c ps8 ko.0m;polh;$+40e$. 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 valubye7c8l*fr7 k3htufx ;lqx +0es of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force be8cuxrh7xqle7b lyf;tk3+f 0*tween them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0i6e 4*ia:jd,dpo xg -e N. What is the magnitude og46 ji*e-d :,oxp diaef the second charge?

  Two 1.0-C charges have a force betwee1wn; uprskm.lyf(cs2mf+e7+ n them of 1.0 N. How far apart are they?

  The force between a z:o9 xp+rb 8kjdj0,ym$30 \; mC$ 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 fort7hp tdp:2cf/r(vhc6 ce. If they are moved to a new separation of rpt6t df(2 /h7cc:pvh 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 f -z *0 xbqqrjikud7b92irst 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 magnitudeubr -q9xjz7 0b kq*id2 and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axif; -.- dhkf;lqqvr(xrs. 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 cm mark. What are the magnitude and dirk;-fxhqv-dq ;f. rr(lection of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =ts6m z8,;xb bqy lb*7-vrzg u7 1.00 m; Q2 = 3vgb67m-qbyx* r bs;tlz ,z u87.00 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 placed at the center of a square)pt+2,lysa8xl-gkb k , and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic forcek)p lsk82ya- ,bgl+t x 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 = i93watc/(m 6z6jqx tu-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 chi 3ujt(ac w6 qz69/xtmarge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC9hgj/ f 9eckp; is at (0, 0). What is the direction of the / 9;he pgf9kcjnet force on the 5.0 nC charge?

  Three identical charges of 3.0x/e hg j8)pxr0 mC are placed at the vertices of an equilateral triangle x)rpx/h egj 08which 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, x(vmt;5g ik0 twhich are separated 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 xm;05 tti vkg(force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge isme ljw(n/l1k1 fw r0 -u z40o,tdce.ca at x = 4.0 m. Where on the x-axis 41,wafulr0cdez1- 0/ wt n. (kj meclocan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the p:nu.,4 wd wa 6oh5tptorigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so anuh 4o:t .6d,w5ppt wthat the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaij/ n eazwe7 )*iuil -b.u,m5vl 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 forc2 0xisobv-u)fmebr*, d* fgx 0prqq-- e of gravity by the attraction of a fixed proton some distance above it. How fa- )u*r2fvomrqxqxe*psi0g b-f-d , 0 br above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point bdh/kosu h7:vh-le 9 .t /tmj zx0ts(n/y nonconducting threads whichht90sd.l:s7 j-z/mxvt(k /he thu/no are 30 cm long. Both are given identical charges, and the electrostatic 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. What is tw)igbejn)t.qhm8 1q c.p -mz;he magnitude of the electric field at a distance of 1.0 m from t1hjz-tq;)m)en ic w 8 bm.q.gphe nucleus?

  What are the magnitude and direction of the electric field at a diq0/t 9yjxn8pg4re f 2pstance of 1.50 m from a 50.0-nC charge?0fq8ny/r4tgj 2 xep9p

  A 5.0-C charge is 10 m from a small test charge. What is the magngj t ,fznafsely39t gk1;/4 l)8pf 2qyitude of the electric field at the location of tj/ y lze9g;sn2k tq3y4g, l)af1t8f fphe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire- 8c mu2dj6 otvw(2qgnction of the emwtjq2d(un 6g8 vo-2c lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the f8nak),t9y tgu rda +oc7hap;7orce experienc) 8poa+h,datan t 9y;g77 cukred by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a*lguig m8dh; /,v/s tpp-v9 ya value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betweenvt,/ mg;p*v9iahyp -s u8/gl d the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a +s 7yek4w i4ymci3f+ q-4.0 mC charge is placed at the 50 cm mark. What is the electm+ey 4ifcsqywk 734i +ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a me)fbogb2he(*ujfh v fj9 6 cx.(dk/hi)ter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joininihbu 2ejh6k/)d(bh cg* ) ofjffx.9v(g the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC +0z0ejo.b ktye mki76are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric bi0 ye.o+km0 67etzjkfield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sid1f8) 4ghv3i)epm twpz e 0.50 m. The last cornerpft3m ))hivz41 pe wg8 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 s 91cv+snn8bhxgv02rlkl 5)k 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 fk05n 9vbn 8kgc+r )lsshvx1 2lield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed i8tcpy1j81z gp n a uniform electric field. What is the magnitudegj 1t zppy88c1 of this electric field?

  A particle with a charge of 4.0 mC h hmi5 9lrhs;14kxg /rr/rs7 b5)azjicas 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 t mic8 tp*/1djp4ji x,vh70yu of 6000 N/C pointing 7i/ycx 40jt1pvjp,8udmh it*downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g +o+ k t3hydr4mcarries 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 directitdm r3 4o+kh+yon of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the )-3r g5suqd j9gide(emagnitude of the electruegd qi3es9)d jg(-5ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 je :/zlz:k: qxcm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of q kj/lzez ::x:the sphere?