State the law of conservation of electri ngkwrte .7+w+ 1vhs2uc charge.

  Is it possible for two necax9lwwy7 uu:k cy6gpx 33/.a gative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othyskx aq9s15f*+ v sqo9er?

  A glass rod is rubbed with a piece of silk. During the process the gkx+ 7xt wbn4w.lass rod acquires a positivn. 4w w7kb+xxte charge and the silk

  A proton carries a

  The model of the atom shows u)q2x 6gt s-0)nj rc3 3ssxlyka

  A neutral atom always hwoy b;rji6u f;5;z:jxas

  An atom has more electrons than protop(7 wxa d8wx,lns. The atom is

  Materials in which the electrons are mvf,.ncy1ktf g- n4 f72a/yjoa, y6gpbound very tightly to the nuclei are referrofm-j a y7.6 c1t,4g/g,ypn k2f yavfned to as

  Materials in which the electrons are bound very loosely to the nucle17dvy9p x 2n /qvc6-cum5dmwa i and can move about freely within the material an2dq-mumwc6pdv /c y15v7 x9are referred to as

  A negatively charged rod is bro0iao4 +we ff y91vbc(iught near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will bay fv if+ 0w1b4(ei9oce charged

  Sphere A carries a net positive charge, and sphere B is neutra(tfqj(cw* 0m tl. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct(j0t*w (mf qct?

  How can a negatively charr g4)yqbufsu h.)qx4r,b k/ c-ged rod charge an electroscope positively?

  An originally neutral elect,tb hs2xqt7te5yrgd; 7mj(q (roscope is briefly touched with a positively charged gt7dt; h(bmsx5,7e yqt r2qj g(lass rod. The electroscope

  An originally neutral electroscope is gr, v( hpqnzn:4jounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, z4p(j, n: nqvhthe electroscope

  A positive object touches a neutral electroscope, and the leaves separate. kemk5ct2 wh 6j, 1r;bzThen a negative object is brought near the electr5b zme1 h wk2t6crk,;joscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on a r6d qiso6 0p)bwy8th*m42u h(n;yiawn 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 t8siq6)0yw htrdao;n2 i* y 6(mp 4whubouch 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 4e qu dqs;6mv8constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l8d8bszsjp5 jb- 2xq( uarger in magnitude than juj(z85x2-s pb8 bqdsthe second charge.

  Sphere A carries a net charge and sphere B is neutral. They xmpecfw/9l(8 are placed near each other on an insulated t pe9cm x8wf(/lable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other 7uqd7ucb(c:r9pg dvu.6t(q h with a certain force. If the charges on both objects are doubled with no change in separation, the force bb( uqr 9q7vu(cc7g p6 hdut.d:etween them

  Two charges are separated by a distance d and exert mutual attractive forcjwo4 qy09l6t*i 0egac/nbz e6 es of F o/60y*46azjt 0 w9nogel qiecbn 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 wiex ir1bh35rk)8sz q a,th a force F. What happens to the force between them if one charge is doubled, thr b)ra8z3s qi ,kx5eh1e other charge 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 m. xux4yglmx58 8 What happens to the magnitude of the force on the proton if a second electronuxm l8y 84xx5g is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happe* omuxg*i nhjuj.p4*; ns to the magnitude of the force on the first eleu4mp xu* .g *njjoh;i*ctron if a second electron is placed next to the proton?

  An electron and a proton arsm q)nqo84l9* cvaa. .cmcx0ne separated by a distance of 1.0 m. What happens to the size of the force on the proton c.*q cxn0lns.aaovm48m)cq9 if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squarex-kji o4il 8*f1iy.qr . When a second point cha 1l fq8iri4ky*xo-ij.rge 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 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 equilwduf43i3 1 b)lk ipbi+ateral 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 cd3b4flikw1)3 b+ii pu enter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followin 9zwf6 svtbcnfa 9i4,2g is not a vector?

  At twice the distance from a point charge, tg*yw1ne*/g(neod9 4tfe* sn rhe strength of the electric field

  Is it possible to have a zero electric fv 5hz;x4peh 9tield value between a negative and positive charge along the line joining the two charg4hx9ztv;ph5 ees?

  Is it possible to have a zero electric field value between two posi)bn)ebaqk;( p tive charges al;b()aqb )nk epong the line joining the two charges?

  Electric field lines near3lo)5vpubt2i -1doj s psitive point charges

  The electric field sb7j ,o 0qh2ntihown

  Can electric field lineeom cq, mu;b548za3 tys intersect in free space?

  A solid block of metal in electroq 7z 9 )zy9q ecmt:jwgk6n7w1fstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fieldwz 17ytzqc)kq wej7:9mf g96 n in the block's interior.

  If a solid metal sphere and po3 g/pik 3/wnynd;5+wgl*3ppf u;ea a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center ap / + kwgd;/3p5 3pnfo3yglenpwai;*u nd the surface is

  A cubic block of aluminum rests on a wooden table in a7buxct 8kazf(c8 -6j eu(on /j region where a uniform electric field is directed straight upward. W( c/ 8n(6tckf u-zuj8bxjao7e hat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriupz6zm(wkvi 9*7delqs -9 w4qfm near an electric charge

  A positive point charge is enclosed in a hollow metallidf9.h 1ak08xxatw) eu c sphere that is grounded. As compared to th 9) dx10 8.kuatawehfxe case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of condue:qx jv7hlmu kzg.fj0h4l c,5*,- pcwctors in static equilibrium.

State Gauss's law.

  The charge carried by,; 3y5lgdxkd t one 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 s lxo.bkroig d t: w*i8nt78w,)-dw-lmany more protons than electrons does this piec8-8gxnrod.wt - wltlds o),ikbi:7 w*e of plastic have?

  What is the charge on 1z vcsh ii f18ksyj+6/2 kg of protons?

  An atomic nucleus has a charge of o 1eib n 8f+wo;1s2anx0q6zzf $+40e$. 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 grd+;q ty e6w/(z*fhoof 2.0 and -4.0 mC, respectively. What is the magnitude of the owdreg; (fhz/*t6y+q electric force between them?

  A 1.0-C charge is 15 m from a second charge,iygqn6-2 dm+r and the force between them is 1.0 N. What is the magnitude +i-r6q dg2nmy of the second charge?

  Two 1.0-C charges have b1k5ywt-pg0d a force between them of 1.0 N. How far apart are they?

  The force between a ;+zge ,cied *c$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apapino*:7,vgz0 52fc pwl:llkx rt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forcfl0x7 gn: 2lvli *p:5 w,kcozpe between them?

  Three identical point charges of 2.0 mC are placed on the x-asa g /dbi o rmuw4p9) t4u-tu;bn2d7.dxis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 tnp;7ad4 /ru.)bib2-tguuow d4 smd 9cm 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 is placed qk/ge e,.-xtx 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 .ek/e ,-tgqx xelectrostatic force which acts on the charge at the origin?

  Three point charges are lk yz/xawgc* j q,1* kw9x3gz-uocated at 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 3.0ukc*w w,z*/qgy1xgajx-k9 3z 0-mC charge?

  A point charge of +Q is placed at the center of a square, and a secom7qn1e ncwnv j7 *9rr(nd 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 cec*1 njr 9evwn7(nqmr7nter 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 nt:k-s/d xaf f sp.wg6-C is at (0, 0). What is the magnitude of the net d 6gp:fkwst--s /a.fxforce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 tge: ;*s* wk;gx 8mptbnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ;p 8ws; b:mkg*egtx t*net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices dddts-3;a q0vql02xn of an equilateral triangle which measures 30 cm on a side. Wstl-dx0 dv ;qq0d an23hat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh3xqbo 3:i5qfnjicm) ;w7 k.tuat point, on a line between the two charges, would it be possible to place a charge qibofx ; qkcm:u7j 5.i3wt)n3of -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 =ex7(f n8:cc- jyroh.c 4.0 m. Where on the x-axis can a third charge be placcn 7 h.jcxrye-c8(:fo ed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placl/k)1sy* -ozr 1ew:wmfraqtb1zk; 2 6cq2wkl ed at x = 2a. Where can a third positive charge +q be placed so that the forc):sr kkzo1zfyb ecwq -1/ kw6l12 2mqlar*;tw e on it is zero?

  A copper penny has a mass of 3.0 g. :ph y*dii(8 phe8,kp f 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 th . vi1rl o1.gon;sakh.y2 bh6te attraction of a fixed proton some distance above it. How far abovnbvt h2ksh..goa1lr;16 y io.e the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondu872tc0 szwj tsicte08cting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion force 80i ss7c20tc8jettzws 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 magnitude of the electrica/ ih/z /sun uaxy,q0: fn u/y:/ aszxu/0a, hiqield at a distance of 1.0 m from the nucleus?

  What are the magnitude and directionb*(j g.8(q5 z f /glelyj2cgdl of the electric field at a distance of 1.50 m from a 50.0-nC charge?5*g/jlg8 qyd zb c( ll2.jfg(e

  A 5.0-C charge is 10 m from a small test charge. What is theku- rh7-5 jhqk magnitude of the electric field at the location of the 7 5-uqhkhrk j-test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of tcxm j ts al*zd609o+cqs;1xs-he electric fie slo06m d c9zt1x*q -acxj;s+sld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the j2acz ) hs:;sdforce exhs dzca: j2)s;perienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are se/1 hh2phw(kd nparated by a distance of 4.0 m. What is the electric field at a point midway between the two c kh/w12hh(npd harges?

  A 5.0-mC charge is placed at the /ub+i;hm7 a9spp)qx1o2r nq:awi hy +w u4 e0z0 cm mark of a meter stick and a -4.0 mC charge is placexruhii:uow+ba qnmy 9a)p0e4q7 s;zwp 2 h+1 /d 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 meter stick and a -4.0 mC char3fne.w go:s6 lge is placed at the 50 cm mark. At what point on a line joining the two char.n:gelw3of s6ges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an0 2nrvhcawqu1q8 wval, u.k);d x = 0.20 m. What is the magnitude of the electric finu2vq ;r c,h )v.lka1w0auwq8eld at the point midway between them?

  Three 3.0 mC charges are at the three cornerbu/v 5sre ha)4tzv n,/s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC cha),rv z4naesh u5v/b/trge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m oeq np *t1fv/.n1bma/n,7odpk 4 2noznn 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 of the electric fie2f /,dk/enn*p oz4. 7n1qb nnvotmap1ld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it,)st 8 .r yw0yoxswg0l is placed in a uniform electric field. w0)x0 w.srtyy8ol g,s What is the magnitude of this electric field?

  A particle with a char r*/ pae8tw(frge 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. tv-s1vo jy-f6120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the balljs-ty1ovf -v6 for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball ise/y/uputazyb0)(y * w placed inside a uniform electric field, and is suspended ag0*yaty )buw/ (ey uz/painst 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. 6kyvilamo ;:. What is the magnitude of the electri6;kami :o y.vlc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect+vj2-wcfrx,4t omg;z ric field 6.0 cm from the center of twj,+gz4r2 ofx v-cmt ;he sphere?