State the law of conservation of esz a cuh/o/rw:m- p/;pu0kju *lectric charge.

  Is it possible for two negatky91ru qpgez2 6;c uc) ,ge.t yve23doive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other?,.fhknhh 2 b+2am6rv w

  A glass rod is rubbed with a piece of silk. During the procei w.(ux5e 2g2 e2aocyzss the glass rod acquires a positive charge and the silko u2(ezex.ga2c2wi 5y

  A proton carries a

  The model of the atom vw1hm0z+qa/ re1 f4 v+cm+ eazshows a

  A neutral atom always h neule6dp(b18 as

  An atom has more electrons tha..kt kltf 5 ipzao+r02n protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are- ) a(vk pzm8vejqd,g) referred q am8pk)z - ,vve(jd)gto as

  Materials in which the electrons are bound very loosely to the nuclei and ;arzt7x gj/u7h +,7oghpkz ) ucan move about freely within xr/;jtz7g+o7 )pu z g7,huahkthe material are referred to as

  A negatively charged rod is broq7 f6xm,/ rtzl2n kts/lh7u5 /2edp gought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be6f l/x um527h2kr/ns/,z 7tptgdle q o charged

  Sphere A carries a net positive charge, and sphere B is neutral.gvh 4 .irz77v dehr*8)eq5yd*kral2u They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is co uaer*kqy z7 h.dheid) *g587r2lr4vvrrect?

  How can a negatively charged rod charge an electroscope positively6 ul+ au613 qomreh+2var xn2l?

  An originally neutral electroscope is briefly touched with a positively ch,jz x:*j.zr smmb9tpdj+ - u (gtpbv,+arged glass rod t -u,rxzbmj9 t+:gm djbp(j*s,pz.v+. The electroscope

  An originally neutral electrosiz+y )6ry r w+;crzi0gcope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is rr w+gyz6y)+i0rz; r icemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. The l-p/bhh2(5g-k.o 0be7x6vl zny dubln a negative object is brought near the electroscope, but does not touch it. What hyvlhe.lb-zbb5no- du(xl/ p26h0 k7gappens to the leaves?

  A large negatively charged object is placed on an insulated 0+ u:z:sus/vpe xk.wh 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. A w:z/k. +vepx0u:hssut 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 cuh tc7 p.qk,*uonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is ly01wito2a ;6)r bn:ix f*x4 xtvg;oenarger in magnitude than thexywtgofv xe ;iani0t)*n :2 4r;ox1b6 second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neaiu+(mu + kdi6er each okd6(mui+iu + ether on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges on 7k ne1d sal f*(kxm9 h/npb7u7xtn,qj *(t.n cboth objects are doubled with no change in separation, the force between tb, nt(lf *x*m(7nt91cn.edj sk7x7p au knh/qhem

  Two charges are separated by a distance d and exert mutual attrav82wvli3 4 qbb)-suik ctive forces of F on each other. If the charges are separated by a distance of d/3, what are t)24l kqvws ui- vi3b8bhe new mutual forces?

  Two charged objects attract each ow4w*f.ycp 0kl ther 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 c0l ww*f.pk4yvalue? The force is now equal to

  An electron and a proton are separatek9v8 -ubl: 3dqh)i8l ln(pbw ed by a distance of 1.0 m. What happens to the magnitude 9ql (vb8i w:n83d-)uhlkpl be of 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 happed3m9x.+/dd ,xw )uz)mgjte rwns to the magnitude of the force on the first electron if /u+m mwe w.))g,x drjddt9z 3xa second electron is placed next to the proton?

  An electron and a protonfdz e cm(3 o2.yhep5-j are separated by a distance 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 f3e. yhdcje(5zmop 2- the proton?

  A point charge of +Q is placed at the/ sa cvg 2r1g-m)cbe2vy5x4sg 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 elect b/ axyc) m2-2rg4gs5ecs gvv1rostatic 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 placed at the centroid of an equila3lvi/mt 8+3g(n gf zbyteral 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 (lb/y m ig3+gnvtz8 f3charge of +Q placed at one of the other vertices?

  Which of the followingcda4 *dxjn6 g7 is not a vector?

  At twice the distance from a point charge, thh s(q:bf s4cr,fac2o.e strength of the electric field

  Is it possible to have a zero electric field value between a x6tr;w8t4(tw1 qhw+7x;coejb kf 2gcl vh,k8 negative and positive charge along the line joining the tv;8j tt( ,821kwhohrw lfc7x;k+ wb4 g etcqx6wo charges?

  Is it possible to have a zero electric field value between two positive charg)rn d04xs gcjxw+/v (ces along the line joining the two chacjd(gc r xs0 )/4wxvn+rges?

  Electric field lines near psitive point cha-h* 0dr)i;g jwvuq6 garges

  The electric field shown (sw4bf2o, phv(xpii ,

  Can electric field lbdf,ctv, gdih/t/ ql*m-+c g7dt -so :ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is pczo3 .wv1te3vge:, o)r n/lu blaced in a uniform electric field. Give a statement concerning the elec/:3o w)zv gtee1,.uol nv 3bcrtric field in the block's interior.

  If a solid metal sphere a)6 e.4- 5avgiwfelqlq*gapd7 nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway betwe74fae5vwigaqq) 6e - g*ldp.len the center and the surface is

  A cubic block of aluminum rests on a wooden table bb,+jb4ta x8am/v8 fm in a region where a uniform electric field is directedba88b,x+tjmv baf4/ m straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric ch z9vgvdm y)2ewz5e)ix5jdx06 arge

  A positive point charge is enclosed in a hollow metallic sphere thatv /u*- .+k xpkk;:rgp zz7ecea is grounded. As compared to the case without tpue 7*ekr +.c kgax;kz/z:-pvhe hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condh7dzk*3jf l- c/2zmcb uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electrf. ecgi-8aan wu.g3/lon 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 prot mb29+.w5bvsk.gmrjwvlr*x r.8*a * ygxf) xlons than electrons doesa )wrvl*98 ykx.vmbfwbxrljx.r+ .*25sg*gm this piece of plastic have?

  What is the charge o5 i*4qffxis k4gai ,n/n 1 kg of protons?

  An atomic nucleus has a charge ofo/;h1 b qh(pzd $+40e$. 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 ch x3 ykzu5wei4:arge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elez iuy45w x3k:ectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1j oj6bli an0qp(.;ql;.0 N. jl; qjl6pi(bqa.o0 n;What is the magnitude of the second charge?

  Two 1.0-C charges have a force betwec 4pwhw/g 0k;gen them of 1.0 N. How far apart are they?

  The force between a vpo)uo9yc +d vl k.8o-$30 \; mC$ 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. 7g+1cf:f v;sth n8rxv If they are moved to a newr xt 7+hvnvcfs; 8gf1: 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 o l/6qz(9*wp41pa 2luj *j;fk httc-yht2slafirst 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 magnitude and direction of the electrostatic force which acts on the charge at the oplk f sthoct;t * 2 u91/j6 h-4aqp(*awzlj2lyrigin?

  Three point charges are plac0jep sj.)xb d d 8a7 bcssnrst1089af(ed on the x-axis. 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 ana.8c e1 (b rp7a0fjjb 0dss8s9dxt)sre the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are lo1/vl+;9f ehqutu y;gocated at the following positions: Q1 = 2.00 mC at x = 1.egvhu 91o ;qtu;f /+yl00 m; Q2 = 3.00 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, and a second p +1q jexuu)1xpoint 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-q 1ejxup)u1 x+left corner?

  Q1 = 6.0 nC is at (0.30 m, jcx k q:kj0vu+q:j n19 k l,t2/hnq-iq0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude/h0jntk -9v1 qu :nxqj2q kiq,k+:jlc of 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); Q3 = 5.0 n* q9 d,h: dgrmspy;now: xig/1C is at (0, 0). osd/dw:yh,i 1np*;:qr9gg mx What is the direction of the net force on the 5.0 nC charge?

  Three identical charges ofw i2qxf4j.6 . w kcopu06v+yzh7yei;x 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which z6hvwx kx7pcwf6q4oujie; y.i2. +0y acts on any one of the charges?

  Consider point charges of +Q andzbgi-0r(:v 7: cjszab +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possib(zbjg:7v-b0i :as rc zle 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. tvov 0-jx)o(q9 ha0i1j p1trv Where on the x-axis can a third charge be placed so the net force 1o pjojq it)(9a 0vhvx0-tr1 von it is zero?

  Charge +2q is placed 52wi60 eamae) uzxi+ yat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so i)uye2 z5a+ e0w ma6xithat the force on it is zero?

  A copper penny has a ,rehwx s 7+mp5mass 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 thehvq)*rt/ aluc 2 h1 k)z+7cdxe force of gravity by the attraction of a fixed proton some distance above it. How far above the elevu*k/)zqe2)h r t1l+cc7 adhx ctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncycg s2ipn0he(8 ;qpdj.72cq fonducting threads which are 30 cm long. Both are given identical chqyc27 8fep p.h 2sq0gdji(n ;carges, 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. +ph gow s 9 brrm1w3gkno-4q2* What is the magnitude of the electric field at a distance of 1.0 o1og+mkq9s4prwrn-b w*h32 g m from the nucleus?

  What are the magnitude and direction of the electric field at a di00sl*7yl7 :a s ,jg1ckic jsadstance of 1.50 m from ajdical0 ksgc*y1js7:7a, ls0 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thedkgv+ 6i ag*dxx,v ;u7 electric field at the l6+ki gagu,d7vx; *vxd ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whatso g09k6j3tra is the direction of the electric 6 sj ot90kgra3field?

  A 5.0-C charge is 10 m from a small tesf7 wh xlw ;n1,m:p*mf ii7q7wy*ixr k-t charge. What is the magnitude of the force experienced by a 1.0 nC charil fmp7 hiyxr,mn:i 7w*-7k w;1xfw* qge placed at the location of the test charge?

  Two point charges each have a value of 3a-6gj sfwix6dt*vn)( ,u kxhts3h i.3vzeg/8 .0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between thixz)svhh ea.fk(tvt- ,u n38gd* 636wgsj/xie two charges?

  A 5.0-mC charge is placed at the 0 8 2onw,r 07xn lr+3sp*a)dlhwnms+m m cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielmonap8+n l+7 wsm)32 hrnsr wl*xm0,dd at the 30 cm mark?

  A 5.0-mC charge is placeh1:rv dkh3yzhogy x l, ,s32/1el;hozd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fiel l ,,orx ho3syk1hv3:l2/zgh1 yzh ;ded zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 a u(8 pn-a(fzagnd x = 0.20 m. What is the magnitude of the electric field at the point midway between themna-a ((g u8pfz?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. qag r)y*7 mtms 5aqn;,The last cornerns 7aqr ga)tm,q;m *5y 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. Ch5gi ;k0vgjja *w-oe r7/k b4xgarges are placed at the corners of the square as foll4vg k7i xb/*j0ga5ej-w k gor;ows: +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 charge 1 dzhpgjf -*c ejw91+zof 5.0 mC when it is placed in a uniform electric field. epc9jhdg*jw-z+fz 1 1What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m.y7fn2 g*qc7 kwz .canass 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 fieldlsd kr+7c-1+wskpt4r of 6000 N/C pointing downward. What charge must be pla+ r1 -st 4c7+rlwkpdksced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The be-spoy; 97x4vz/cxj8h ol, zkall is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direc/ zzsxyej, hkolc7-v p849o ;xtion of the electric field?

  A metal sphere of radius 10 d0ya(bm8s7gstc (yk *o 1 -m eu:r*kpscm carries a charge of +2.0 mC. What is the magnitude of the electr* 0sy8geo :rbs(*adu kpm1(7 sc-mykt ic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm v edy7fw0/2fts p9)- :uv0 nyfa,swys carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?s9y2t0:0 sv yf7,wfw/fse-ap n)y u dv