State the law of conservap 6 fi2/gc/b,svuaf 9ption of electric charge.

  Is it possible for two negative chargesw4jnv kp8od:oy: 2kr*,q3 ;b ekmot x7 to attract each other?

  Is it possible for a positive and a negative chargfw.*jht+ 1ogae to attract each other?

  A glass rod is rubbed with a piece of silk. Du lj*r,w2qck5hx) sy sb/ ,3kkering the process the glass rod acquirqke klsw, kcs)5,j3h b/x2y* res a positive charge and the silk

  A proton carries a

  The model of the atom shows .y -xu7yi7lq cwu lg2:fsr60m a

  A neutral atom alwayb z,i /yq0hr9bxj;wo *s has

  An atom has more electrons than protons. The atxo wgfn be:6je4f4g9 8om is

  Materials in which the electrons are bound very tightly /gw+pjv:7w r.( gpnyn:cx* rk;j lq5lto the nuclei are referred to a5 kl/7wg y;grpcvn:jrp.n*j:( wxq l +s

  Materials in which the electrons are bound very loosely to th7 iu69s ak,lfoe nuclei and can move about freely within theo,7il aus6fk9 material are referred to as

  A negatively charged rod is brought near one end t3z506w celjuof an uncharged metal bar. The end of the metal bar farthest from t05ju ez6 tc3wlhe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neuaq(t;f* on k)x;l2g:mdp1 9jtyv0cqmtral. They are placed 2;; o*t:gyq)qmjv cxkm(p 1d0a9ltfnnear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pos bq l9wvgd8r4*itively?

  An originally neutral electroscom +c/h-a arg:0chmy c9pe is briefly touched with a positively charged gm+a- cac /9mhrhy0cg: lass rod. The electroscope

  An originally neutral electroscope is grounded brie bgp 1 8,6ced) cuhx,k9ia2xhfxx4 +mhfly while a positively charged glass rod is held near it. After the glass rod is dube x+a98xhx4f)x k,6g, pich2h c1mremoved, the electroscope

  A positive object touches a neutral electroscope, and the;ftvy)tc 4t w( leaves separate. Then a negative object i;wy4ttfv c)(ts brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulat,g+xt ag3;ozj ed 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 o zaggj3tox,+;bject. What is the final charge on each ball?

  Charge is

  What are the units of thj4 o:w hj6payiofd 9 5-dh2s8qe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger iqivz ld+r ,7.kn magnitude th.7 z+idvqlr ,kan the second charge.

  Sphere A carries a net charge and sphere B is nerxj uzs2i5j o*-7qf1wa )8a-5divgw rutral. They are placed near each other on an-rwsjxwj5 avi *qoi5d-g)8 72rzf1a u insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other kv31q) rj,gg cwith a certain force. If the charges on both objecg,3v1)rq jckgts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert gb:93tedc bknk kaqzw/k4 vmgf2/182 mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are mkg//nw2 1dbzk9 :kc4 bq 28akefv3 gtthe new mutual forces?

  Two charged objects attract each othejfj0h(vce(n 6 sfsw 39r with a force F. What happens to the force between them if one charge is doubled, the other chargfh06(3jjc 9nss ev( fwe is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a prot*hn-llr8) 5htntjwl* on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eln t*wr8 lljlhn*t)5- hectron?

  An electron and a protoq w /rn:l*vdrmen4 9(pn are separated by a distance of 1.0 m. What happens to the magnq4/ l:dw v9p*rnmr(enitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton alh)zd ) unnofw6 m0/5lre separated by a distance of 1.0 m. What happens to the size of the forceowl)m0 6hn )u/dnz 5lf on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pla2gexmt1f( ;vy ced 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 2v f;mt1xgye (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 od ;4dzzfw*yn3ilf4k3h+h6 m6b z9ffx f an equilateral triangle. When a sdwxfn9 idzhfy z ;z 463*k6fbfml4+3hecond 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 vertices?

  Which of the following isus0r+poe pr zp7.vcj,45 o6jxy.pt+u not a vector?

  At twice the distance fut1p i0z9r/ (nm9bo gt 7y4zjtrom a point charge, the strength of the electric field

  Is it possible to have a zero electric uzt: enu, t2r-field value between a negative and positive charge along the line joining the two cha:e,r2 -zt tuunrges?

  Is it possible to have a zero electric field at:fszc) gmzh wc,g. 20m1 )htvalue between two positive charges a h. fs2ca)t z,0cggt:1zmm )hwlong the line joining the two charges?

  Electric field lines near psitive poistc3cv)ybi bh m-,l85nt charges

  The electric field shownf tuo1thfr,l85t qj:rjhh8:8

  Can electric field lines interse hypeh(r+cbb3/hw7 ; 2b0cfa gr lq))tct in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformpd9)bxyfob/ 0;1jlna electric field. Give a statement concernij9 0lpby axb;)fond/1ng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ake+2epf;3f 5r;g/b p82os2noq;ikx k wwl jc2 re each given the same charge, the electric field (E) midway between the center and 2fb/xi35e2 c 2;+pk;p 2f;wrgsqknej8 ko lw othe surface is

  A cubic block of aluminum rests on a wooden table in a region where a u tg n:g,if/hw oe wzm66k(l8rmd) 2sz6niform electric field is directed straight upward. What ca :ng)s/ geodf2 (itk6m,whlr mw6z8z6n be said concerning the charge on the block's top surface?

  If a conductor is in electrs5rn q-zj98br z1duby3y p e6+ze36kqostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metalligo6+n *klxjgaej;-9ai hl ;k4c sphere that is grounded. Asx4gkgh njajlo *a;+;e6 9lki- 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 equilyt nk1af3r1) bibrium.

State Gauss's law.

  The charge carried by one electjc m ;r3d kr/q8yi2wr*ron 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 hx6k: wq:h klqg+w1m* nas a net charge of +2.00 mC. How many more protons than electrons does wkx:n61h:lgq w* q m+kthis piece of plastic have?

  What is the charge on 1 kg ofa8)*3olpl dq v:z5 ktb protons?

  An atomic nucleus has a chvp fpt,w 1*po-arge 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 values of 2.0 *)7s iy(izbc2is kz,7/diejsand -4.0 mC, respectively. What i 7 sii2zij/zy7sk(dsi, )bc*es the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is (l33q9uux ig/ z)ngz v1.0 N. What is the mgzu3g(x9/)ul nv qi3 zagnitude of the second charge?

  Two 1.0-C charges have a a+4q m8yv9bm mclu;f+ force between them of 1.0 N. How far apart are they?

  The force between a mj;uv/rj)am hi h6:lb4k)ge:$30 \; mC$ 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. Ifb c*bi v,b:wq6 w..suh they are moved to a new separation of 8.0 cm, what is the electric force between . s*bb6.quwwbh,ci v:them?

  Three identical point charges of 2.0 mC are placed o.uzt s13sie cjc,t 2 0)pwb9ytn the x-axis. The first charg12wp)jtz i b,t et3uyc0scs.9e 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-axij p(g*64nic lzs. 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 a*lij(4zn 6cg pnd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.5 8*kcy/ ,kau5udwd/i fkiq(y00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q( w,i c5kay ku8yi*/dudk5fq/3 = -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 ay (0 lwwl 8-s,kh-2ozsqv cho* square, and a second point charge of -Q is placed at the upper2-oy*l0scv( wh oshq-zw k, 8l-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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 i: ogxk8p s)0r= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netk8x )g0 poris: 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); Q3 = 5.0 nC is atirs4fah,h;-5x 4pg6j 5oakfl (0, 0). What is the direction of the net force on the 5.0 nC chargesh4ahgk4 p aj5x o5,r;6f-if l?

  Three identical charges of 3.0 mC sstg992 3wbwiare placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of wb 3t2w 9i9gssthe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whickv. ; a6v*q2u:hjs o -q (m1r0eq.rckkxhd1wwh 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 force aokmd60u -kj1 2vq1qas:. (e*wr v; .whxkchqrcting on it would be zero?

  A +3.0-C charge is at the origiukt6 fl69ye a1n and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it iau6e61t lk9 fys zero?

  Charge +2q is placed at the origin and charge -q1d6xs :kpve v( is placed at x = 2a. Where can a third positive charge +q be p1vk d:psv(6ex laced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A/.0gaq v;e blv 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 tiklof so3j,w/(9nst5 he force of gravity by the attraction of a fixed proton some distance abovji,k3(5stw9of o/n s le it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadse5(rd m: mjb*8q1dv lb which are 30 cm long.:bdbe5mdl jvq m1 8(r* 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 magninq6 8auk -o(retude of the electric field at a distance of 1o-6r(auen q 8k.0 m from the nucleus?

  What are the magnitude and directidf6q l+qc6r1 aon of the electric field at a distance of 1.50 m from a 50.0-nC chalr6 cqda6f1 +qrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni+ pbs:cjdhj8i0 ikp0+ s:u.dvtude of the electric field at the location of the t0.bk d8jsv+d:0:+ uc hijppi sest charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirj-7 jt azcz f d,x/j:/1(iegozection of the electric fieldjadcz(//7 zit, o 1e:j f-zgjx?

  A 5.0-C charge is 10 m from a small test charge. What is3jcdr;e ::4 z igv;ins the magnitude of the force experienced by a 1.0 nC ci: c dv;3e:gs4jr ;zniharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan1* jzvpyof8 q/ce of 4.0 m. What is the electric field at a point midway bj1fvz 8oq* p/yetween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick.6b.ryh)y ) vua4kcjn6 :z*nir+jzk o and a -4.0 mC charge is placaz)r ykz.b uhyno66knc v:jri.j+)4*ed at the 50 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 m6s-dl*7*ggd ikb; wx21k q4e fat8x fteter stick and a -4.0 mC charge is placed at the 50 cm mark. l4tqb8esf kx-127dk ;d6f g gw*ta*ixAt what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 d c/ 4zo/hr:ufm. What is the mag zf:dc o/h/4urnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.y+ (i1rk :bzam(e u5rx50 m. The last corner is occupied by a -3.0 mC cha irxz+y(: a5(m1rkueb rge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on)7swg wv/ .c hej.ixesft1)xht7k(j: 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); -3.0 mC at (0, 1). What is the magnitude o1i7 ).f hs:jhc. ktxg)wese(w /v7xjtf the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed iny6axpk)q. p t7 a uniform electric field. What is the magnitude of this electric fi p kxy76ta.p)qeld?

  A particle with a charge wo6q 6c cf0hp.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 electric field o,clbe ( ho:7*-m yijkhf 6000 N/C pointiclk7*-j hi :hoy b,(emng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Teivgb dk 15)n+s.den 3- qj(5zn de0jhhe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction.nde5bd1kjvi ( gzh n q )jd+ense-350 of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t*q-d, uah*phdf1+3d v rf0 lkihe magnitude of the electric field 5.0 cm fro3q+ d0f*,l-k1 dhivr*pahf d um the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W 4ur;o6 w(j foyxqm00lhat is the electric field 6.0 cm from the center of the sphere?x q;m w0fuojl4 0yr6(o