State the law of conservation of electric qd1 v wd3f2-syy(xoj6charge.

  Is it possible for two negative charges to attract ea8).iah( pgpbu ysff*4 ch other?

  Is it possible for a positivgs(y+v 3b+bm5b8n zxkr7rjdm -n- m(ie and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durin l2c+zz *8kyrtg the process the glass rod acquires a positive charge and the sic* z2t+8k yzlrlk

  A proton carries a

  The model of the atom sh sxf,3 3qgzom:c 4p0elows a

  A neutral atom always hau 78l8qg ru froh4m5ii6a :7uds

  An atom has more electrons t l1-qpjzjhci-1zv x0 f h,/o)zwah;i -han protons. The atom is

  Materials in which the electrontdac(b mo79.m;ojid l *ft(k 7o;zw7es are bound very tightly to the nuclei are referred to d*7ibmtmzad.ok we7o(cj(; l 9t; 7ofas

  Materials in which the electrons are bound very loose8o hom/,9 65plenepmy ly to the nuclei and can move about freely within the mpe ,on8 6lm59m/yop heaterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.qw p52ng1 sxobg:ol1 2 The end of the me52b2sq p o:oxg1gwnl1 tal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ih7)zrr b ;or dv+tv)79(kl4w)efspl es neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sta ) fzl ek)vdprh7;vroterw 7(+4s b)9ltement is correct?

  How can a negatively charged roj9uwl xjt+l1; d charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a po: 4pk u7ss(t8bwcyx n:h(7xmpsitively charged glass rod. T s xn 48m7c (wy7x(pkphtub::she electroscope

  An originally neutral electroscope is grounded b k0xl(p t;6gc j gxq,3uyq7f.nriefly while a positively charged glass rod is held near it. After the glass rod is removed, theg,t3l;07cpk j6x y n.xu(gqf q electroscope

  A positive object touches a neutral electroscope, and the leaves separagp)f ,001 xfnptp+xjqyhsv6+ te. Then a negative object is brought near the electroscope, but does not touch it. What happens to theg x+,pf p1shn jf)0v0+qt xp6y leaves?

  A large negatively charged object is placed on an ins kyt5 p3p2r+j8j4tfr lulated table. A neutral metallic ball rolls straight toward the object, but stops before it tou k43fl8r5pp j rt+j2ytches 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 ball?

  Charge is

  What are the units of the Cou z4y ;5xskf1 te*j8ivklomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.w7qi)s6y o3a t The first charge is larger in magnitude than t)y6stowq7 i a3he second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n 2i+zjs 7kd(3xmkmau- ear each other on an insulated table. Which statement best describes th uk(zsdijk x32 -ma7m+e electrostatic force between them?

  Two charged objects attract each other with adg iyl x+vi0n48 uh:ih0wpa:) certain force. If the charges on both objva) iiuwxi4+h:nh :8 p0d0yglects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrakgb3k 6w0 tue6w-,upu y;yy jfa5/b*jctive forces of F on each other. If the charges are separated by a distance of d/3, what are the ne/-j;5tfu uby6wueyw0 jb* , y3g6pkkaw mutual forces?

  Two charged objects attract each othedq3xgbj 5u.vp .)0faxr 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 their centers is reduced to one-fourth its original value? The forceud3q).ba 50pjxgx vf. is now equal to

  An electron and a protonh 4vvd np42 )0q, rmw.tnvs,pe are separated by a distance of 1.0 m. What happens to the magnituvv0 h2,ptqn d),e.4 nm4wpsrvde of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are ;/ vyq d/7b wsd,+be4pb6ecpv(bs 0qaseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to th0ebb;bc /,yp74w+/dpb ( dvs 6qsqvaee proton?

  An electron and a proton are separated by a distab(u7 jw*iqtk2od2y 0 ance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closeb tj 27wk(yo2i*dqau0r to the proton?

  A point charge of +Q is placed at the center of a square. When-*vvpizj04e x a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic -0ivpjexv4 z *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 of the square?

  A point charge of +Q is ot:rw 06*k2;v(8sko6cmo ciz mf9vl pplaced 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 s:*6vkk ctor2zo c v8w6;mf09ip o(mlvertices?

  Which of the following is not zn+, jawr/ rnfk -wbr5:ij,(m a vector?

  At twice the distance from a point charge, the strengthzel+52um h- gq of the electric field

  Is it possible to have a zero electric field value between a negative an66jqc (oq:iw.1j ejl-gy t9 vdd positive ch j(-vt .:g6eq1jy9 cj6qdl woiarge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive -;b. zvsjk pzry):ql) charges )q):l;kz.zry p- bvjsalong the line joining the two charges?

  Electric field lines nb ry+ qs(b::q6ztefv8kv rh+ 4ear psitive point charges

  The electric field sho g hwqz tm:*szf273kj03uq,+;gpkn z cwn

  Can electric field lines intersect in free spa*jy)jz2n3 cjo ce?

  A solid block of metal in electrostatic equi7vy*jcu(pf457e whjdn 4htge i- /t9ulibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block'uyt e-9jwhig7pfn*e4tv(uc5h7d4 j/ s interior.

  If a solid metal spherp(clm bmdiq +q5(r./ce and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E)d+ lpqcm5b i(rc(q/ .m midway between the center and the surface is

  A cubic block of aluminum rests on a w56r dzxt fmew4/1v 8fhooden table in a region where a uniform electric field is directed straight upward. What can be said cdwr fhv8x/4 5zt1f6 meoncerning the charge on the block's top surface?

  If a conductor is in electrom(mahm+z9)a,kw0 36 jz nogokstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thatfi-3m5+ qne:5 i3is yrl.gebt is grounded. As compared to the case without the hollow sphere, the electric field at a point drgen3i mb5t+l i5 i-y3s.ef :qirectly above the hollow sphere has

State three properties of c / mbdpnap* -lv ,1ucl*q:y;peonductors in static equilibrium.

State Gauss's law.

  The charge carried byb)yo cr7-;k 3umi-eu p 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 thiv1a 3 p5 ;nk xjn,hvp0: pakfrruq l;;(7ig3dan electrons does this 750nxj;gqhrd ;l;v iknpa,3a u(v3p r1f :k pipiece of plastic have?

  What is the charge on 1 kg of protko. v1.qcnpt /ons?

  An atomic nucleus has a charge of cgkaff2h cvc*85 /wk/k:;4g kzntz n3e*p q4t$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separate se1 navn81l/k jw(p,dzj6q5zd by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of tl18n,5z1 /zk( vn6jspwjadqehe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwe /wvwk8jhk. /j1 (k y3t)wu r1s.agrrtla*r4xen them is 1.0 N. What is twsar1kt/kjk 81.34.ur)arrt whgj( y xv *w /lhe magnitude of the second charge?

  Two 1.0-C charges have a fot4 56c(vrsi oprce between them of 1.0 N. How far apart are they?

  The force between a +qgzd owv0nz8 ,wr (r7$30 \; mC$ 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 force. If tc5t/b5,u -6hhaafy sk hey are moved to a new separation of 8.0 cm, what is the electric force betwefy hs /5b,56-c htkauaen them?

  Three identical point chargesm a2.4b1f5h sh, avyqh of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 v,h fa q4hs5a1byh.m2cm 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 uad:b( lmzn.9 +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 100b: um n9l.a(dz 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 mC ad1ln58fgoq7 s.u y k8et x = 1.00 m; Q2 = 3.00 mC ne. s8f8qgkdyu5lo7 1at 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 plac*jlgco*2ugv7v/z i b,ed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. ui2c vb 7zg/o,*gl*vj 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m);j9kv 4 o)*wnnh Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargenkvoj h)*4 nw9?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, kn.s oxugv4;y o9o);g0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of tusxno; g.k9v ;yo)4oghe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral t+qk(asl p*)e+ -3 vydlg2 )cuunmu( msriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force u mnl+l s(+ydckemu u-sgqp*3 (2)v)awhich acts on any one of the charges?

  Consider point charges x ylply)tbw-8. hc3 i)yz-/syof +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be postlxy y-3p)h/.) zc8 ibslyw -ysible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at /1 c5vvl b kv59q h::tp4cijkxthe origin and a +9.0-C charge is at x = 4.0 m. Where on thecb:k:1jv5 pl9/h v ktxic q45v x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charoj )*p1nyv vo0ge -q is placed at x = 2a. Where can a third pn oy1jov p0v*)ositive charge +q be placed so that the force on it is zero?

  A copper penny has a mas ac6rjp4,bmr 4s 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 agains va-9*qjvdt 2dt the force of gravity by the attraction of a fixed proton som9*vq-2advt jde distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc 01mn fak7 1dtt3d2srpting threads which art 0tn1 ms3pd2f17akdre 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 the ma.1ux :p7 yhvcqgnitude of the electric field at a dista .xpcvuq:y7h1 nce of 1.0 m from the nucleus?

  What are the magnitude and direction of t x1ewzzvfi*xg:7g-h +he electric field at a distance of 1.50 m f iggwxhf x -zzv+:*7e1rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitut 1ogw4t7r ss(de of the electric field at wtsr4otg 1 (7sthe location of the test charge?

  A 5.0-C charge is 10 m m3ho. 63 mlu5 aed(hbzfrom a small test charge. What is the direction of the ele .e(b5mha m3l63huzod ctric field?

  A 5.0-C charge is 10 m from a smam4xeosab+4 x, q2l w2all test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loca,ew4 o+x4smqa ax2l b2tion of the test charge?

  Two point charges each have a value of 3.0 C and are sepa3btqd+8 h0vvfrated by a distance of 4.0 m. What is the electric field at a point midway betwf v v83tq+bd0heen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick x uowhh0a(j7781ohjt and a -4.0 mC charge is placed at the h8h(jao07jx wu1h7o t50 cm mark. 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 sp63vaq5 bln ;dtick and a -4.0 mC charge is placedd 5pav6bqn l;3 at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mCeo,ue -w2zju5rh1dy fe/x0( i and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between f- hxz5/uoe1(ye,wdu0 er2 jithem?

  Three 3.0 mC charges are at the three corners of a square of side 0.5qkp)w(8d ckjlga7(b it: pb,20 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.bjgq8p,(w2t (k:d )p iabl ck7

  Consider a square which is 1t/ i,94t aqp3d u9 aepjz9wjs4.0 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0) / e44zqwpas9t3jpuit d,ja99; +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 when it is xx,8gjl6 -jlz3fj7yl.ev-gv placed in a uniform electric field. What is the magnitudg- vj ,.exl3 jlg6-f7zxjly8v e of this electric field?

  A particle with a charge of 4.0 mC has a mass yjat4r/3)c-un vk 1hmof $5.0 \times 10^{-3} \; kg$. 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 of 6000 N/ uqeb+ v 4csr69.j-kx*ycng/i C pointing downward. What charge must be placed on the ball fqe.9 kug r+- c/vysnx*ijcb46 or it to be suspended?

  A foam ball of mass 0.150 g carries a charge bkocki2; o9l7. y t)3nbv qga1of -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 direction of the electric fieobc 1 2vkqny 7ba.93t;gki)olld?

  A metal sphere of radius 10 cm carries a charge of +2.0 m, 0qme/z*ct eiC. What is the magnitude of the q*m itzee,0c/ electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carris3v(lz sdb+j.7ny 3wnes a charge of 3.0 mC. What is the electric field 6d7jy3 nln3(. bs v+zsw.0 cm from the center of the sphere?