State the law of conservation of electric c7k /dyzgx/x*.obx 5 xxharge.

  Is it possible for two negative charges to atf 3z6 fjs0w: eckt 7nl84:bvrztract each other?

  Is it possible for a positive and a negative charge to attrd r)xda vrqed y;swr//c:a).k3 5;xthact each other?

  A glass rod is rubbed with a piece of si;em.uj 7y.fp9*slmi nlk. During the process the glass rod acquires a positive chari uy9p; *jeln.smf7 .mge and the silk

  A proton carries a

  The model of the atom shou6+jibfu*,s f ws a

  A neutral atom always haskjxoxo91 1zpa**bpt ,

  An atom has more electrons than protons. The altv*.ax rwf(d*ot-3q zsk /3 atom is

  Materials in which the el/7 y0:jy aknuxectrons are bound very tightly to the nuclei are referred tn/k0 y7yj:auxo as

  Materials in which the electrons are bound vooy z* 3 )cw1ui4xer(z,-yjn wery loosely to the nuclei and can move about freely within the material are )wy *(eo-zwjn1cyiu 4xo3z,r referred to as

  A negatively charged rod is brought near one u0ip 9a7yczhiv kn 1 ty,yp(5 0hj,eyda *95fjend of an uncharged metal bar. The end of the metal bp yiypzd5,7hj(y ev1ca,unthyk 9 aj9i0*05far farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. T 1qw5ua6h2vkn hey are placed near each other on an insulhv1aw2uq 5k 6nated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively -0pmdgbx qo),2 bmn2ucharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posexxysk h38:;8go l6d /fa,vkditively charged glesdoxgfv38y 6k lh x;kd/8a,: ass rod. The electroscope

  An originally neutral electroscope is grounded gh. z6 -hjozf jx-; jrhjm3,z1briefly while a positively charged glass rod is held near it. Afth6hgzxjj r1o, zzfm-3-;j.jh er the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lea* ;;t1gyggu3q 4tgqmaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leavest1u g;a*my qgq 3t4g;g?

  A large negatively charged object is placed on 5 sewn;/xj (n p1i1mdpan 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 doesjn1 dmw /n5pipes(x; 1 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 Coom 6*;k7fmxy:(oh e:d d6pfjlulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge i f5.6,u1oedzbs php5m cad:e)s larger in magnitude than t6sch m:u 5adf)zp.5 p1o b,deehe second charge.

  Sphere A carries a net char w1tizqzk:j.jtu, ; t4ge and sphere B is neutral. They are placed near each ztjk.wq:,t4z ij t1u ;other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each oo+ :)lasuj i6rther with a certain force. If the charges on both objects are doubled with no change in6 ja)u:r +olis separation, the force between them

  Two charges are separated by a distance d and exs rof1t+su+b,:h6uf,e *8o d6kag mv cert mutual attractive forces of F on each othohdt 6 sf +k8fa6+rv *su1e bcg,um:,oer. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other wipcmw 4g:xb2q: th 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 value? The force is now equal twx:q c:b24m pgo

  An electron and a proton are separated by a distw/ +u*bmfs qry1 ;,sq 9zzbq(nance of 1.0 m. What happens to the magnitude of the force ns ybb/zf*,9wq( ;1zrm uqq+son the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dis1x ,98e.:0cp u3+vdqv .tuoxurtqbmp tance of 1.0 m. What happens to the magnitude of the force on the first electron if a seconm0tpu .:ru. x ,cxp+ v oqe391tqvbdu8d electron is placed next to the proton?

  An electron and a proton are separated by a dish4a xjk) + kehq26kbgw id ;8e6krf9j,tance of 1.0 m. What happens to the size of the force on the p6bk48w)9 r 2ikkj,edq 6ahe;h+xjk gfroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at tjv*bg/jv)xm) 6jfn//gx g fw+ ola 0,fhe 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 magnitude of the net electrostatic fbxfgfm/g, gnw+a vj/0o*/)6) jvfxlj orce acting on the positive charge at the center of the square?

  A point charge of +Q is pd+ hfxakc0 b-y8gu ffhqo-q9h4tj(2,laced at the centroid of an 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,-uh-f 2dg8 kyc4t0qjqx+ h(9 ff ahbo 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 a -lg-00s7a3sjpd l wlovector?

  At twice the distance from a point charge, th- kw b)(xt7zm r,keoh9e strength of the electric field

  Is it possible to had6q2k9 y.mt ugve a zero electric field value between a negative and positive charge along the line joinin2 yqt mku6dg9.g the two charges?

  Is it possible to have a zero papxo./k arc4,kky kl g5-p*4electric field value between two positive charges along the line joining the two c4a/ * -cpkgp ap4,5kx.lkyrokharges?

  Electric field lines near psitivemohp/o)6cfh6ln j4-rwm ve /7 point charges

  The electric field show6tve2w k98 h; )xg;,golrmbmrn

  Can electric field linr9l 2b3.mjo vkes intersect in free space?

  A solid block of metal in electrostatic equilibrium is* xjglq a,3yh+9s o*tp placed in a uniform electric field. Give a statement3 oa9,xjh p*+qgys*lt concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere-ek urs::: lptq-v 8sf,swsxahml47n3: d(lu of equal diameters are each given :3 wt:qs4a(xlvfplsnruss,lk : m-8:de u -h7 the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumin wblym4y-k2ejk ;*qg(* r r1gbum rests on a wooden table in a region where a uniform electric field is directed straight upward. Wbg**k ;l1ry 2y(k qj bm4egw-rhat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an mbtb: 42 bt 4ak:*yszmelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grod7;u-jys rk;lunded. As compared to the case without the hollow sphere, the electric field at a point directlyjldr;7;skyu- above the hollow sphere has

State three properties exw .sof 7 7o4bp(ya0rof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electromnugl.ahddq/l6 6f h 5m8+0b gn 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 cxopo g-)sw366u wwx1 net charge of +2.00 mC. How many more protons than electrons does tw-1 oxp)66 ows3xcgu whis piece of plastic have?

  What is the charge on 1 kgh mm1zr:9onq8dkso-8 of protons?

  An atomic nucleus ha*rydl4u7f imq63m ;i(srcho*l7 tk i)li40vp s a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedq mu4;l**xfc6.v kote by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is t*c;* tvq4fouekxml .6he magnitude of the electric force between them?

  A 1.0-C charge is 15czk)kwu5zsu0 vi *.z8 m from a second charge, and the force between them is 1.0 N. What is the magnitc *zui5u zk.zv skw8)0ude of the second charge?

  Two 1.0-C charges haoq,tyzyhyf( e9(8a*tj s o*oi 8 gj4b+;zrj9pve a force between them of 1.0 N. How far apart are they?

  The force between a x- 4skdxp*c3t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar5e5 *1,o3mz pv:3uwg kmwdktrt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between themwm u:k o*t553pewz3m,r1vg kd?

  Three identical point charges of1 rf -zyc6y*w 7tuypbyn*i l*4 2.0 mC are placed 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 mark. u6 -14r f*bizltn py7yywcy* * What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are plac1cj) l adg4tc3m3- lhja1trr7ed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x j3r 7a 1a)1cldrm jcgh34lt-t = 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 lo0r: 3w nsnxmlf: tk55ycated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3nmxnf 5yt3 w s0l:k:r5.00 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 sqc (yoypamyegd2a,d 1mk7/v* /uare, 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 thadkv*(cme ,71gayopd/y y2m/at 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); Qwk3/q9uvi ;p o3 = 5.0 nC is at ( qowkp3v9 /i;u0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =z, srg0wo(,+tib0 (kt3 wahgs -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ow 0ohg +t,zg t(ais(rs3k,0 wbf the net force on the 5.0 nC charge?

  Three identical charges of rs- ,;;8st0 abttbnq o3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic8 bns 0-t;sbr;q,taot force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poir(s2reej *, uhnt, on a line between the two charges, would it be possible to place a charge 2*j,her ure(s 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 -4nk px4.d+mvun dlhp7e(m/v) .mupp-C charge is at x = 4.0 m. Where on the x-axis can a third chargu .d.( mmekvpp+n 474/nmdlvu)ppx h-e be placed so the net force on it is zero?

  Charge +2q is placed at the or.na;;z (gz- o1tk5vhib+6kz)js n dsligin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed ( 6+-l5 san1jk)o;gtnhzvs;.k zz idb so that the force on it is zero?

  A copper penny has a masstuelg w nq/o/svp 19*: 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 the force of gravity by the attraction oaj;un2jy* 3(jxik dm, f a fixed proton somijmnkxaj*,d3 (yj 2; ue distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc8f/ ,3b-wu la.neobde 0xh99 xyguqc+ ting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threadf0ux.ew 83hl eb gb y9doxcn+-/,9auqs is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magn -ftr.ckv )ax:;jhr1mxqf:,n wea:/gitude of the electric field at a distanc a;f.rh/rwx- v k ::mcfq1gjx) :etan,e of 1.0 m from the nucleus?

  What are the magnitude g aj*t8yw0 .5rau9xjeand direction of the electric field at a distance of 1.50 m frogjear 5 w0yjx9 8at.*um a 50.0-nC charge?

  A 5.0-C charge is 10 q(y10 k1-, p wywiwcaxm from a small test charge. What is the magnitude of the electric field at the location of the test a0yww,(q1- wp xy ck1icharge?

  A 5.0-C charge is 10 m yz i 10jlg*qg fsri)f:j.n14p from a small test charge. What is the direction of the electric fie q4p)i.1j *iz:lg1j0 gyr fnsfld?

  A 5.0-C charge is 10 m from a small t yde72)yp1asw ng(e0test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the loetwyyse7 an2( 1d0)gpcation of the test charge?

  Two point charges each have a value of 3.0 C anugr2zar31u6y az d hg.q 1)h/td are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charahdg a1q1tu.z/h2u )3g6rzyr ges?

  A 5.0-mC charge is placed at the 0 cyluy3y1pv jiek w57+c/(7khk2 5cfjn4nc /lhm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electrc/ f(7jp nn5kliy cj7uh4e/hk+ 5y 32vwyck l1ic 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 cha )6wbumai.qcq-9b ia7c0c xr 8rge is placed at the 50 cm markc qiuaricab x76. )89c -qmwb0. At 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 = u l4:b9h lkknv5d cg090.20 m. What is the magnitude of the electric field at the po4hkk9gd :c 90 vlnu5blint midway between them?

  Three 3.0 mC charges are at the three corners of alwq xi( , :r:1988hfwun iglwd square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the s(li1h, nxu98wq8wd:fiw: g rl quare.

  Consider a square which is 1.0 m on a side. Charges are2 he,dl7+pszr6 8q uqv placed at the corners of the square as follows: +4.0 mr q+ 8,ldhqpsez6u2v 7C 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 of 5.0 mC when it is placed in a unifox qby+g26yd2rr3+z y8fb);qusl d+ gnrm electric field. What iss g8ndbgl b3u 6;qfyr+2yyrxz+ q)+d2 the magnitude of this electric field?

  A particle with a charge of 4.-:d; fmyfip., hgh ,ww0 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 ea2f(nhflc((/ k 4juyfield of 6000 N/C pointing downward. What charge must be placed on fk((c/yfua( n l4 he2jthe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. t nrf(w/j4vseha z p0.;.jf)s The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electri)pjse(/r4..0;zta sn jwfvhf c field?

  A metal sphere of radius 10 cm carries a charge of +2.0 m*2g0h(at+)ddmm lwd2 mbd d4mC. What is the magnitude of the electric field 5.0 cm from the sphere'md md(4bal * t2m0wdmh2)g dd+s surface?

  A metal sphere of radius 21ut3 :yy 33vrlm5dtpj4dm3h c.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the :3 3r p4y3jv 13u5dtlcmdhmyt center of the sphere?