State the law of conservation of ele:uw e4s) auzmeieb7: 58ni st8ctric charge.

  Is it possible for two negative charges to attract each other?4 xmp 48,erwjl

  Is it possible for ae20x 8 i1xw/94dnvnf4azpv ktd2( dww positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tc0p81b rb-jr mhe glass rod acquires a positive charge and tm-0jrb1r8 cpbhe silk

  A proton carries a

  The model of the atom soafvv.0r 8z -shows a

  A neutral atom always xaies( 8(psu,kn 0l7 whas

  An atom has more electrons than protons. The atkt;+ p3 c(.qq8jpyvwgom is

  Materials in which the electrons are bound very tigh w 4s3 ;xeqps053vkmxlnhx i:5tly to the nuclei are referrex x0;skxlq mw:v h si5pne4335d to as

  Materials in which the electrons a1byar4o 0oa rg 6z )x*ebkyq(5re bound very loosely to the nuclei and can move about freely within the material are refe y a06(og* ozbe41rx yqar5)bkrred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 73o ub/ -ap8z)qr2/gugbn 3n h*vrpplThe end of the metal bar farthest fr7-v //pp ngb* aqhpzunl u3b)rrg32o8 om the charged rod will be charged

  Sphere A carries a net positive c4savq mdokx8lb,g; 12 harge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. xv 1 d2al;bksmq4g,o8 Which statement is correct?

  How can a negatively charged ror;bxbwg k:f4ol5t5k /d charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargem9b:lewf gwm z3c 7 bnhthya/.*vo3- mkm)t;* d glass rod. The electrosw h -yo3ae7t*n.hm gmzw3lv:t mb)*9mfkc b/;cope

  An originally neutral electroscope is grounded briefly while a s.:s65 j vsaageo,r6a positively charged glass rod is held near ag er6ass.vo,a :j5s6it. After the glass rod is removed, the electroscope

  A positive object touches a new3cm uiu/ bgnmmx./67utral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happensm7muui3 m wgc/n.6bx/ to the leaves?

  A large negatively charged object is placed on an insulu v*egf)db5hw5xp2 ,6x 7pl*kuw d; isated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second nekp; b 6vgiluh* 5 xdefuw w)d5,x7sp2*utral 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 Coulomb constant fibz;io*1ia ln(tpj,vg, t )3 $k$, which appears in Coulomb's law?

  Two charged objects are s j1wb2c,+od :bmv:d p4u9r dyrp sni6+eparated by a distance d. The first charge is larger in magnvdb+6 ydn+ w 4r2psi:bjcdo:pur, 91mitude than the second charge.

  Sphere A carries a net charge and sph(/xz b9b+y.k/ cvr yikere B is neutral. They are placed near each other on an insuk.bx + yyi/ v9zrb/kc(lated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other +jd7cn3s;70 gmd zjm:d r5ol,bdvd0f with a certain force. If the charges on both objects are doubled with; o dds mgvfdcd3,j+007j dn:zl57rmb no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrac* jt1r6:g psvdtive forces of F on each other. If the charges are separated by a disttr sp6 g:*jv1dance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force Fyx /eph eqj m)in/96g+. 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 re)yx9jni/hgqpm e/6 e+ duced 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 mv)8 swe49pq zo. What happens to the magnitude of q)9 wvop se84zthe 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 fwp y3h/;u0mb2bs3lz.0 m. What happens to the magnitude of the force on the first electron if a se;m2f3sp l y/bb0u 3wzhcond electron is placed next to the proton?

  An electron and a proton are separated by a distansb*9bto;hh:z;46hq f t dsr-ace of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to ts; h6 -obz tt9hda*hsf4:b q;rhe proton?

  A point charge of +Q is placeb3l s/+ssl k2qd 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 co/ss 23lqbks+lrners 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 centroid of an equilatera s : .77cezi7hgzeg:kfl 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 7f. sig:z:e7heg kz7 cthe other vertices?

  Which of the following is not a :hp.ztq/ 2+,tz5ifhf 6o heqbg,n k0evector?

  At twice the distance from 1zi -zis, e 5oq q0.fs5leppy5jga 7s.a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and p6z8 ese nw/0sjd9s.trositiver9nsdw /tsez e 6s80j. charge along the line joining the two charges?

  Is it possible to have a zvm4rq )+ xbfqx8; f4-ixa1gkcero electric field value between two positive charges along the- r)qkx1xv;4xcqia f g 4f8+bm line joining the two charges?

  Electric field lines near psitive p c7; *+qn)x+prhtk 29qjz dihmoint charges

  The electric field showok4ev ris,),3 z heiw9n

  Can electric field li 7+otjrtm 4f6dnes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in .eabthra 45 *ja uniform electric field. Give a statement concerning the electric field in theh*5.b aare4 tj block's interior.

  If a solid metal sphere and a hollow metal sphere of equc2( o efq.)vl xe4oyn3al diameters are each given the same charge, thexqoc o)e 2y(nfe. 3vl4 electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio 4obx zs +*+bi7:blorzn where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's7orozs+4bb zxi*:lb+ top surface?

  If a conductor is in electrostatic equilibrium near an 5 *aje0 ;(vsy,bp31i0yq fptbxii 3bg electric charge

  A positive point charge is enclosed in a holl4 *ciei1bi tq*ow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sph *beqitci*4i1 ere has

State three properties ofz4il jyd.m c4r:4ngmn vf.i o 8ses2;8 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one ek z+kh p;y6vz qbr5f u,v3(ye6lectron 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 c6 pfo mhb2apq w1cxh07*2y;s xharge of +2.00 mC. How many more protons than electrons does thi72hp bxy*2p6x w0 fa;1qchsoms piece of plastic have?

  What is the charge on 1;+(c nd,upt st kg of protons?

  An atomic nucleus has a charoq kjs;v:syg8+*dkz6ge 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 valuesrk9kciqx8acni 2(;vgyc/ , 0q of 2.0 and -4.0 mC, respectively. What is the magnitude of the elect;8cxki(c 2v ari0gqnq cy9 k,/ric force between them?

  A 1.0-C charge is 15 m from a secou:j c,de2 h w ;qd18ix56k:bnhhv0tcond charge, and the force between them is 1.0 N. What is the magnitude:5 oc2ndu;j 6 hdx hhtc:e01qv ,i8kwb of the second charge?

  Two 1.0-C charges have a forcf+ 4; u,-eae8z0mvm d ixvhm,xyie. k:e between them of 1.0 N. How far apart are they?

  The force between a j 3j jcijc202 dv/br;j$30 \; mC$ 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. Iff1npehzgp2gv.o82rv nr k : :5 they aregzg. k28vrn n2rvhpp:1 :fe o5 moved to a new 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. The fis5ds+(/ s 6ntyk5m )zla4mxn20vqa aprst chargsnnq)zt l+/4( v0may2 xs6sa mak55p de 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 the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isqn5qbj62 tmu * 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 direction of the e6m5 n* jubq2qtlectrostatic force which acts on the charge at the origin?

  Three point charges are located at the following pj 66g)yd *ubq ikt:cx0ositions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x qt g6xjui*c:0 kb)d6 y= -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, and a segh v s:n3fg.g.cond point charge of -Q is placed at the upper-left corner. It is observe sfg:h3 vgg.n.d 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, 2+n6r(p jp0 cdox,xrd0); Q2 = -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 c d 0jdxrp+2,xpcro6n(harge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC p 8z9abi1nc-l2c -asryg xjt.h*6d cq5gg -r;is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha9z2t-n6 -licg hd8pjx.grysgc1 *ar5;qb -cat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of t wefb utjpo953ok s go;b 3g*lx346;y3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is tgje stou;*oolw 4bp xb69 353y;3g ktfhe magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargeoybxu7n.+0b bpc,a sie,:j1nv: s x gldm5d0;s of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two chargxo,; y+0 :msa1n,ncbdg:v70bxij.lsdbe 5up es, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where onf c4zr) 1 cwcj;a-64nhwjab* ja n+ya8 the x-axis can a third charge be placed so the net force on iaajnybc*+c4cja 4h6wrwjfz -);1a8nt is zero?

  Charge +2q is placed at the origin andal3 0aip l/2be charge -q is placed at x = 2a. Where can a third positive charge +q be placed b3l 0aap/i2le so that the force on it is zero?

  A copper penny has a ma 1+rw puk2p kwhe 48ygmaw-4mgko6(z .ss 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 the force of gravity by thhd.n3t1yvw7: :( uosgkvhbs wx0y9 q8zb:6r ee attraction of a fixed proton some distance above it. How far above the electron is the proton?ro: h:xv.6uks10b3zwtd78 y (vnqh9yw:gsbe

  Two 0.20-g metal spheres are hung from a common point by nonc aqu,we ;t;m+aonducting threads which are 30;qu a,at;w me+ 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 had rn06c,bj2 fk1.cknbs a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the .n k621,jrcn kbfc 0bdnucleus?

  What are the magnitude and direction of the electric h 2,ntk-.zjwc ar,r+5m/te owfield at a distance of 1.50 m frj.o,+h /t k,zwr5ae rw-cnmt2om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What )bl ssgyof95 1/muhn( is the magnitude of the electric field at t/y( u fbo)m9ghn s51slhe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wehpt)mcs5+2 : oqjb 1shat is the direction of the electriqhc m)jo2st+1eb:s5 pc field?

  A 5.0-C charge is 10 m from a small ag 2x :vq6:owptest charge. What is the magnitude of the force experiencedx2 q6oa:w:vgp by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have av q e2st(okxlc:kj+ l 968vi5k value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a po9k el vlq+itks28:kov6cx j5(int midway between the two charges?

  A 5.0-mC charge is placed at the 0 cir 9 w9cgjeai-)xp,s+m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electricg+i9e)s9pc -i rxa,jw field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stq:uezq4c iemb*k 50 qk.( .fueick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two cha mu ..4ez*q(fiqkee5c0:buqk rges is the electric field zero?

  Two point charges of +3.0 mC and t*:pjya t;t*h-7.0 mC are placed at x = 0 and x = 0.20 m. What is tj **:;attthpy he magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corneret6js: rl a,s( vqnph 0f50q(as of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electfqhlr5a:0 s6sq(epavj n(0,t ric field at the center of the square.

  Consider a square whi+:rpo93,cq vqhn g *d0( ittrpch is 1.0 m on a side. Charges 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); :vrn0d9p+ i tgph(*r3o,qc qt-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 plha0 rmq0 mn v6g0hje4,1ct3;zfdh .daaced in a uniform electric field. What is t;aceh,m n. mr4 3 gdhdj010ta0zfq6vhhe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of glxh c5v252go s .)xtg qt.nhjg* .6vp+opn9f$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is;qamt k :n.a:(egdm+w placed in an electric field of 6000 N/C pointing downward. What charg;ant:a +mg.q(k: mdewe must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrie2zlh y+ 2uix/cs a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravylc 2xi/zh2+uity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t5n(ep-pyxub ej6 )p n26hhn:the magnitude of the electric field 5.0 cm f-b2hj(6ht)5p u: pe n pnnye6xrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3,ri v):v 7 g/(cwpevqy.0 mC. What is the electric field 6.0 cm from/qw )g :yirvv v(pe,c7 the center of the sphere?