State the law of conservation of elec 8xgq gb++6sxytric charge.

  Is it possible for twor) a )n5lb9i .zhm89 hvr2smzt negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract eachjszyqx5d6h5r k8z d06 other?

  A glass rod is rubbed with a piece of silk. During the process thep+9+m k) vpue(c x/yud glass rod acquires a positive chap(d /p +uuxve+ky)9mcrge and the silk

  A proton carries a

  The model of the atom 6a4 +wtbru;u5lpg -orshows a

  A neutral atom always hayisk;i ,(-*p 2 m a.c,hd(z4aatcgduds

  An atom has more electrons tq/ 6m5q6*z-,yrx ry vvzqha+d han protons. The atom is

  Materials in which the electrons are bound very tightly to thefo z xr6)-fzt,b cps) :k.j58fyj; pii nuclei are referry)s )rzfp8 6ii z, cptbf:.;jfxjok-5ed to as

  Materials in which the electrons are bound very looselyfi+ay1gei(a8; nqsp:.lt oz3 to the nuclei and can move about freely within the material ai;epz fq+nogaa1t(8:l .is3yre referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. The jcbhn56b+0 at end of the metal bar farthest jca5h0tn b 6+bfrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Thed(a)k r nod v7;(zl8vvy are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is(k)dvz lvor(vnad ; 78 correct?

  How can a negatively charged rod charge an electroscope positively?i +j*1g ci2p 2jgmf6us

  An originally neutral electroscope is 3fq t16s2 neb.qpkldf(1 4vbfbriefly touched with a positively charged glass rod. The electroscope e34vkbs( f1q612nflqftp b.d

  An originally neutral electroscope is grounded bri8z/g: ki 1tla;ddkft3efly while a positively charged glass rod ist8f/31:k tg;dd liakz held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and theiz2d/ cnise1, ey( fl6 leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens tol 2cd ifz (y6e,ies/n1 the leaves?

  A large negatively charged object is placed on an in+ul8kqri) zxij 8jba0p19 j2msulated table. A neutral metallic ball rolls straight toward the objec kjza)il0 jrm 2u 1b9p+jq8i8xt, 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 object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constccr3evh/f;:b6mtx2 i 1i v2pp ant $k$, which appears in Coulomb's law?

  Two charged objects are+/d4t q,zm opv separated by a distance d. The first charge is larger in ma q/d+ozt,pv4m gnitude than the second charge.

  Sphere A carries a net charge and sw 2v k:*mfxjz6phere B is neutral. They are placed near each other on an inswz:26fx* mjvkulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain 2j-gooi 99qvvforce. If the charges on both objects are doubled with no change in separation, the for2o9j9o vgvi- qce between them

  Two charges are separated by a distance d and hw; nzck1d gxy4)ncwwx1s ;67exert mutual attractive forces of F od w1hwkc )7;61 xyxgcnwn 4s;zn each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the form);(1qb 9 ptgln y(yirce between them if one charge is doubled, the other chargtig(m)pr ny(lb ;y1q9 e 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 proton are separated by a distance of 1.0)aen0+d 5td1vy4 xw.jdsqwj+ m. What happens to the magnitude of the force on the proton if a second electron is placed nw)n wja05+ yv+1.ddsx jdqt4eext to the first electron?

  An electron and a proton are separated by a ,3 i7ov n-x.9x x*ehauyarwc7 distance of 1.0 m. What happens to the magnitude of the foh9 iw7a7,y .eaocxun3x-v*rx rce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What htwotik kve*f1i*5bi- x p2)m. d5x-bq appens to the size of the force on the proton if the electron is movediv.b * d e5)pkmxqb2tkt5--ow1fi ix * 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whoveb;4mwu8i q os e358en a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostat 4; ueoie wbv85m3so8qic 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 equilateral triangle. Whenvn69ru/u ob b-zb*w f1 a second charge of +Q is placed at one of the triangle's vertices, an e wn1z u*v6ufr-o9bb/b lectrostatic 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 is not y8.nlu8c y257khe tfoa vector?

  At twice the distance from a point charge, the str)z y hq7pgh(452fycrnav-8qfength of the electric field

  Is it possible to have a zero electric field value between a negativeh xwt)2g)k3 a6956tgog pyrzi and positive charge along the xt9k 2 zi)ohw6g6g3agt)5pyr line joining the two charges?

  Is it possible to have a zero ele 8wx9o kxui/mhi-z o9* ar05iectric field value between two positive charges along the linee* 5 09/iu-km8o9zxi hxrwaoi joining the two charges?

  Electric field lines near psitive point charf yqhyl ,z(4xh i;1gefv*5(wsges

  The electric field sh 7a12/3ldq hixf l) 6zhmm.bspown

  Can electric field lines intersect in free ic by2 s4d-vr8space?

  A solid block of metal in 3 *s-4qav+e0b,r9 owfybr kvyelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the ele* y rrv3-b4av+ 9sqokyfew0b,ctric field in the block's interior.

  If a solid metal sphere u1p g o.glqx1:uo((rj2s x.jjand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwa1u2xsjo .j. (gp q xl:1ouj(rgy between the center and the surface is

  A cubic block of aluminuaza*3rzcckult5fz1m 0+3g; u+uqa p; m rests on a wooden table in a region where a uniform electric field is directed straight upward. What 5*pgr z ;1cmakzacut3uf+q+z 3 0l;uacan be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elzvjot;sbre9 6 kbai 1)w6wun;t ;,1n2 1pqp qkectric charge

  A positive point charge is enclosed in a hollow metagajadon37k 8a4)q7u)da gj7 wllic sphere that is grounded. As compared to the case without thed a n7q)8u o wdjak7a4)3jg7ag hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriuma7) yz dc*i1uu.

State Gauss's law.

  The charge carried by one electrog 8t belvwil y/3sm-e3oo5w.5n 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 of1tl9v et4p/it,q: xza +2.00 mC. How many more protons than electrons does this piece/ q,4atvxez1tt li:9p of plastic have?

  What is the charge on 1 kg 4z).5 hgr- 2otlszqu vof protons?

  An atomic nucleus has a charge cvpbui220ps+7 nzuk145u yk h 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 o goq m /3j750hwnm34ce6arnecm, have charge values of 2.0 and -4.0 mC, respectivjog hc50eq3n/ 4mo6ea3r7wn mely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a s3. mz4u*lriro28js:r)n kk csecond charge, and the force between them is 1.0 N. What is the ma3rn8uk:kr.2 s *m)j4 ozilrscgnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart asw5aku8 g.r w+re they?

  The force between a / fvxa;n d iswlq,*;;ra5u:kl $30 \; mC$ 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 (q73(av bi24 r hbfjiuthey are moved to h aqb(rii4j72u3b f( va new separation of 8.0 cm, what is the electric force between them?

  Three identical point cfd z359v; bjmaharges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to d z5b v9fjma3;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 chau pzqpy (dvhn 985pt,+rge 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 maru h8+pqy( zdvp9n5,t pk. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thblc2uj4ohp w0+ *+zcv e 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 th +p*2b+cvz40ohl ucjw e magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at thefr mitb6m /-lt ,*,p 0xkj6quz 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 oi q6j6lk0, tt x-pfrm/ um*,zbn 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); Q3 = 5.0 /lco.rw27mx;ybp/, rn 7oh trnC is at (0, 0). What ltr n. pwbhcm x/2r,oro/y;77is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 )m6ck +8lc lvmvlawy ,9z5*h dm, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcea+khw 9 v cl8dcmzlv,)5l ym*6 on the 5.0 nC charge?

  Three identical charges of 3.0 m/0r5nopx5o+ ry nkr e(C are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitukr0o55 noe +/pnxr(yrde of the electrostatic force which acts on any one of the charges?

  Consider point charges ohv9bfhgi 7.9o f +Q and +4Q, which 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 acting o 7bhh9ov i.gf9n 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. W (dgldoz8u7xh(z d1 6mhere on the x-axis can a third charge be placed so the net fz(6lzxo gddu7m(h8 1 dorce on it is zero?

  Charge +2q is placed at the origin a,p1m j+-tfp sfnd charge -q is placed at x = 2a. Where can a third p+- tjs1p,fmf positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.: w99px . gl5cxsi5pzh 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 mm- qzt)i*uc(b 1rk9c up against the force of gravity by the attraction of a fixed proton some distance mb1c (q t-z c)mirk*u9above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commjq )djh 9 g/qkgf9* zd.,rgtuq;az(h/on point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betwee9 /g.ggt *q)q ;k(dfh rujzdzhjq/,9 an the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge z-clo3 (a/cq gof +40e. What is the magnitude of the electric field at a distance of 1.0 m fra- ozcq3(c/lg om the nucleus?

  What are the magnitude and direction of the electric fieo9rf )k ynbo0zv y*.-nld at a distance of 1.50 m from a v*). y-n9rb kfn0oyoz50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is o -wr n7z;oxd)the magnitude of the electric field at the location of the test chaowzo;rd -7)xnrge?

  A 5.0-C charge is 10 m from a small test9 .asmsq6 a9nh charge. What is the direction of the electric f ah96 .ms9nasqield?

  A 5.0-C charge is 10 m from a si (;ljdfvp89 xmall test charge. What is the magnitude of the force experienced by a dl(if89;xpv j 1.0 nC charge placed at the location of the test charge?

  Two point charges each c k 7u/ c1auqjv;z,y-knt/xb; have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midwaqkbkjz/;/y c7uac1- xtnu; ,v y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a m jhz3rgbga(o ; 1v,*lneter stick and a -4.0 mC charge is plach3( gv,gl 1;rnb*oajzed 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 od8shny6 8upnvs7cu9; f 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 electr spvn868s9ynhc ; ud7uic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x :sh vgfn6v f00= 0.20 m. What is the magnitude o nv0g6vfh s:0ff the electric field at the point midway between them?

  Three 3.0 mC charges arecn: x1-7iznpq at the three corners of a square of side 0.50 m. The last corner is ocq1z cin7 p-x:ncupied 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 bq/ cdvo0*kv 7llr*eoky 62 (yside. 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,ky*vb rkce (0/d62 lq o7ol*vy 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 gw*w69ws)hat5w uo/e hy )h0q a charge of 5.0 mC when it is placed in a uniform electric field. What is the mag0wgwuhwsho9 *t))w5/ 6yqh aenitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of7;o vskfeyvhu9(ld2312 rzjq h/ l ic: $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in ant- j/8mczzche2x hs*l-.* iw 9y7ts;q 0f pxbs electric field of 6000 N/C pointing downward. What charge must be placed on h cbs*iq;j x-z sm8letst- w.y7 xh0z29*pfc/the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T;x9ugtb o ef; ine6 7-hzi6l;fhe ball is placed inside a uniform electric field, and is suspended -fb i6;9 hg7olie ze6t ;unx;fagainst the force of gravity. 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 the magnit;9cdx b:vd8rkude of the electric field 5.0 cm frox8dk:9vc;r dbm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a cha;iq3(zn3lx mej v58uirge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphxem53j(iqv 3l uz8 ;niere?