State the law of conservation of electric2n,h(b5eea -ap5ma c i charge.

  Is it possible for two negative chargel.( (gov s1 m9lzk)7lgdlkcx:s to attract each other?

  Is it possible for a positive and a negative charge to attract eachr/h pj qlqe 5b8d+(k7j other?

  A glass rod is rubbed bpe-c:xa 8xo-with a piece of silk. During the process the glass rod acquires a positive charge ando xc8:pe- x-ba the silk

  A proton carries a

  The model of the atom sho.wo -. :ijwnef )ss1zyws a

  A neutral atom always ha il+mdp7,otm )s

  An atom has more electronpn dss7)7n pkyzs58 vl): htu2s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refemk+-r- xkext u053a; igw 6nvhrred tor-x + 63n5xa;twkmeg0iuv k-h as

  Materials in which thyt u:)+ hrqpaw3f3+ e7ah(yupe electrons are bound very loosely to the nuclei and can move about freel3tuher3(yaph + f +q:7)apywuy within the material are referred to as

  A negatively charged rod is brought near one end orm 4/ ztfw(i.sf an uncharged metal bar. The end of the metal bar farthest from frt/(.4i wmszthe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tha).;j pn7ijqt(3 r a3 ,arw( fd0cnfhhey are placed near each other on an insulated tp h dat7hfa3a(r,;jqw0n f(3icn)j r.able. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosci ;drqabw jqd, q ,i;4;ub6,cnope positively?

  An originally neutral electroscope is briefly touched with a positively chah632r*pao b lgrged gr2ao6b3* hpgllass rod. The electroscope

  An originally neutral a7ur.3 czv6 ef.gb5xda3xlg-cp2v7delectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopz.a-a3 x dx6 clb.cggfr p ue5d327v7ve

  A positive object touches a neutral electroscope, ap n/age2 ao/ q +td7(//prifzund the leaves separate. Then a negati2+ntd/zr/upo7 aaq//(giefp ve object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed fy7i5fj-zbvmso, k ) swin0 3/on an insulated 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 nesm3yb05kv -fi7iwz fs ,jn)/ogative 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 Coulopzagm 43-eo hsok, :j nlvu.7:mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fi. +fg+sk.aya7wp ce-zrst charge is larger in magnitude than the sfse7kcy +pa.+a. -gzwecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedtx/w0lx7y;k a near each other on an insulated table. Which statement best x0/yx;tlw a7kdescribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o0 ml6n0)f5gi ;wxhyo xn both objects are doubled wi0gf 0)5 ;on lhwxiymx6th no change in separation, the force between them

  Two charges are sepay;*tx enpy-y)rated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what )*yeyxn tp;y-are the new mutual forces?

  Two charged objects attract each ot6ir9ir)e3p76 iqiv l4xi lu) cher 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 va up)xiivi6e6lq iil4) rc3r79lue? The force is now equal to

  An electron and a proton are , i0h(7f )kkhfvcg3xwseparated by a distance of 1.0 m. What happens to the magnitude of the forch (kg3w)f i,7v0xc hfke on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a1+rp5*nx uo+ x bm;d1/qz2)bfq3kmhjlq v;z e distance of 1.0 m. What happens to the magnitude of the force on the fiqq 1n*uh/rej zx+b1zbq3f2d; )momv5x+kp; lrst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance or((ay4/4cz +e ishxcpf 1.0 m. What happens to the size of the force on the proton if thec+r(4zh4yxipsae c/( electron is moved 0.50 m closer to the proton?

  A point charge of +Q is x;k2.0yj1l 8 w zlaxc.qz5 nbaplaced 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 sqc 1kz5lznw;0 q.b2y xlaj.a8xuare. 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 b8jm;do a6xb.iz id2,l c9b;dan 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 od j mliicb ,.;b6 892zxb;dadthat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is pifb80desn:vws3s tu9 - bvi11 mz 47 o01kkpanot a vector?

  At twice the distance from a point charge, the - bwgugh)dc*n9c gt .f.8 /jelstrength of the electric field

  Is it possible to have a zero gfes/ j eowi747kk+z+ 5u,cikelectric field value between a negative and positive chazkge/+f 7kucei, 4ojisk5w7+rge along the line joining the two charges?

  Is it possible to have a zero electric field v l);zt2abtk*nalue between two positive charges along the linelt2 atb nk)*;z joining the two charges?

  Electric field lines near psitive point chargkwgx2iu5.:u6h de 1 zoes

  The electric field showu0d jif(e6ol ,n

  Can electric field lines inters k ) rbob. 3t;hwggl.j:dl4fkwx;.l q:ect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform tv n rm+1*f;xhw0pge1electrxn+f 1e;tv10w pmhr*g ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eqf;hhm lysk * o/vhi-.+b /qfy5ual diameters are each given the same charge, the electric fie/smvb*+/ ioqy; h hky-hfl.5fld (E) midway between the center and the surface is

  A cubic block of aluminum restsyh z9y fu2enezo, yd02 fm,fx. 00qr:v on a wooden table in a region where a uniform electric field is directed straxf,2:qd,yfzyr2vyoh 0z 00eu.m f9 enight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near jt8) r z* t(t)ies:piman electric charge

  A positive point charge is enclosed in a hollow metal.e:. pv .nyo6eitv y7ulic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovvytp7 ..:y6.ee inov ue the hollow sphere has

State three properties of conductors in static equsg80zq9)5f aq m awtc1ilibrium.

State Gauss's law.

  The charge carried by o:x*: h w(2re. krtsawane 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 than e -6w5b/bddh iolectbo5 6h/dwbd-i rons does this piece of plastic have?

  What is the charge on 1 kg + r:m5xpz5vjs98mtq c of protons?

  An atomic nucleus has a chaxk w()j mc0dky3g0 n5crge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separate*/1hx me ) 5z rds;muuzvndm48d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Wu /*584mhd 1)zeuxrnvm dmz ;shat is 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 moeg ha*2)lj6 l1* rdnqv k4*n1.0 N. Wha* m*)jl4g 2rkl 1qd ha6nvn*oet is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. 3ons6lm ag,l ,v8 czk+How far apart are they?

  The force between a (r m4oyadol ht*) 7o9z$30 \; mC$ 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 tchbim-iy:)t mmif 66* hey are moved to a new separation of 8.0 cm, what is the electric fo *i) m-:6tb mmiiyc6fhrce between them?

  Three identical point charges of 2.0 mC are .kps;o1evgw6tmyb q-d : s 74rplaced 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 cm -tw 4d;e.6k o rmq17pyss:vbgmark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are pllv35mkf 9ns)u6o +1slj. l uvxaced on the x-axis. A charge of +2.0 mC is placed at the origin5ssv6)k .nf x+v3lj uo9luml1, -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 electrostatic force which acts on the charge at the origin?

  Three point charges are located aiz/) 7zwfnp ggrb*s*rtv.)4s t the following positions: Q1 = 2.00 mC at x = 1.00 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?)g rizf7 zbrg /s)*.4pvs*ntw

  A point charge of +Q is p 7z2 qmkf*soi)laced at the center of a square, and a second point 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 chfmi o*)z2q ks7arge 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 tw d62f2qn,r fzv6wi )m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC czwqv r2ffd )iwt6,6 n2harge?

  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 fu gl,2( asnrj.2jflk.03 mtvat (0, 0). What 2..,k0jj f2ulnl s3vaftrgm(is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticebw),jk/uhev /9-xg4os m a /m3)uhiyqs of an equilateral tr//i)gv a )xw,u-hq /smhb9yum4o 3kejiangle which 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, wlb.ckozm 1el) g+l 4/ghich are separated by 3.0 m. At what point, on a line between the two chare kl.o)1l/cl4 gb+z mgges, 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. 83sn+ihp js-9ncnq u, Where on the x-axis can a third charge be placed so the net foni+j3cshqpn 8-u9n, s rce on it is zero?

  Charge +2q is placed at the origin and */hy )3cew1nhmtqx xs;w(3r rsca9m j9 6vii8 charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thatsiwr3 hwt)6vx31jsai (9/; qc*h 8xmc meyrn9 the force on it is zero?

  A copper penny has a mass of 3 t8n842umzc rvy-ipg +.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 the attraction of a fixj)ve r 9a87whmed proton some distance above it. How far above the electron is the a89v)jeh7mw r proton?

  Two 0.20-g metal spheres are hun7lpp mz*p5v/ se d(2dxg from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the ad2(z5/*dxv7p lesmppngle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of .qc-vi+hu 2iy+40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleui.+quc2h i vy-s?

  What are the magnitude and direction of the ewkdl dvo 7mr j4c0/k(.lectric field at a distance of 1.50 m from a 50.0-nC chad clo4.m /dr(wkk7 0vjrge?

  A 5.0-C charge is 10 m from a smalds/kj j,.lph.bw g+,dl test charge. What is the magnitude of the electric field at the location o. js+b lphgk.,j/ dwd,f the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the o,nz*qzt ip *7direction of the electric fiel7n*zq,i*op t zd?

  A 5.0-C charge is 10 m from a small test ret b295n4n1:qyrnifcharge. What is the magnitude of the force experienced by a 1.0 nC charge plan1 ftn y2r9b ir:nqe54ced at the location of the test charge?

  Two point charges each have a value of 3.0vaa82 uk9n d.1 toaj)6ar*hdd C and are separated by a distance of 4.0 m. What is the elec*d auv8od jkta6da1h .n2a9)r tric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 m,1ycx,2omm g qq8i k*eC charge is placed at the 50 cm mark. What is the electric f2gxqkcm8 e*,y,i o1 qmield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andkni hlvlw*i l/ywr9; 45)cqf ( a -4.0 mC charge is placed at the 50 cm mark. At what point on a linil(ww;fql9)yi r v5c lk4/ h*ne joining the two charges is the electric field zero?

  Two point charges of s.,)dhawvmn o-jy6v )t)ft9 2tz .jal+3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of tj9)v)zjv6o. hywt,f -ad m 2)asntl.the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o exng +)dwt :nqrl0:r:f a square of side 0.50 m. The lew:xl qngn)rdt 0:+ r:ast corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1nzczk 2xg6cz8 m4,jx /eu4y9a.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); -3.0 mC at (0, ekx a 49xmn/g8zyc 2cz, u4j6z1). 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 placed in a unii e8pw8r;tcfb *u+vy* form electric field. What is the magniy *uw v*;tp +refc88ibtude of this electric field?

  A particle with a charge of g8q e2o*ra(c k4.0 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 eb-qql/ ni 9dtuw4f2v;lectric field of 6000 N/C pointing downward. What charge must be placed onn;t 4vqubfq/ 9-iw2dl the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balp e47zn5mgaamw l*,9el is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electr5aezwgm74ep, ma *9nlic field?

  A metal sphere of radius 10 cm carrfqkb r 9:6b+ddmu;v9 zies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the d+ufkqd:6bv9zm r9 ;bsphere's surface?

  A metal sphere of radius 2.0 cm m ew:/25ga6bg ypls0 ) gzfq*kcarries a charge of 3.0 mC. What is the electric field 6.0 cm from tbsgq/g6 kw0e)laf 52y* m g:zphe center of the sphere?