State the law of conservation of eb ru ahc2o( abkn*2s41lectric charge.

  Is it possible for two negative charges to attract eacqm95q5u.n e3otjpzc g)f+8v bnryh59h other?

  Is it possible for a positive and a negat0a zhmvckcsofb k j4y/1cvo2; 8i 6:1mive charge to attract each other?

  A glass rod is rubbed with a piece of silk*kdewp 9n4uq+9gdve qejk0 - /. During the process the glass rod acquires+pgnk99qev -udekw/ q d*40 ej a positive charge and the silk

  A proton carries a

  The model of the atom shows a8d;.bav42jz fhnje 6 e

  A neutral atom always haf879nmq gz m7is

  An atom has more electrons hcs65gd-io f 6y3m/ lsthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referc x0y66yvq7wrred to 6xrq6 wy7c0y vas

  Materials in which the electrons are bound very loosely to thyrn0wb1o 4fym*2-c) lf j*nlre nuclei and can move about freely within the material are reboy-0f rwjnllr )n c* m*241fyferred to as

  A negatively charged rod is brought near one end of 3c h02nkpj;m r7 yr +hwb2zq/f0r+fqlan uncharged metal bar. The end of the metal bar farthest ff 3/rr02q hqy2r+ +hcznpkb ;07 jmlwfrom the charged rod will be charged

  Sphere A carries a netqtdl ( 77uvz+m positive charge, and sphere B is neutral. They are placed near each other on an insulated tz (umvlt77q+d able. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cho 5 )g;x1fkqq-dlqd f4arged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively cha)uwr vo1;jt-grged glass rod. The electrosco1urt-)j;wgov pe

  An originally neutral electroscope is ground4/ csun djl**/dm3+ zfr phqn5ed briefly while a positively charged glass rod is held near it. After the glass rod nlmhjz*pr*sqn3f/+54c u/d dis removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepau p:o12um(q axrate. Then a negative object is brought near the electroscopp:maq u1uxo2( e, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated bah7lm tq27p6table. 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 7ba6lmp7qt h2touch 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 constant t:c ;xwe27-a zll,wr m$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is7 k5ji7 /nos*hasjy1 c larger in magnitude than a h*nsj71/jcs yi7ok 5the second charge.

  Sphere A carries a net charge and sphere 0jk;*kv08ml0jke c5xnqrw m1 B is neutral. They are placed near each other o10mkcm0kn v lkjeqj 08rxw* 5;n an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other jf9ae8bu)6 y1v jzpg.with a certain force. If the charges on both objects are doubledz1.ejbavj8)f u 9y p6g with no change in separation, the force between them

  Two charges are separated by a distance d and e*vz3 17hibv9x4xbf foxert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutb7o1 xvzv *9h4xibf f3ual forces?

  Two charged objects attract each other wi-i*apt4o)27q6jr e1 nr mfbop 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 ip ri 1 2pjq)a -4rotfn*7b6emots original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m.-.q n;3jfrb k qblct,2;efd p9m wv42n What happens to the magnitu4 bfqk3cv2nqld-ern f;j 9tb ,pw.;2mde 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 distancpy5x)d 0m 4xw*x8w hrce of 1.0 m. What happens to the magnitude of the forw0x4 cdhx 5w)8rpmyx* ce 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. Wsidjg+jxrk.7qr w( *oh0 )e 2ghat happens to the size of the force on the proton if the ejo erk)sq. ird7w0h2(jg +*xglectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When b +- xix.8ds0b rl2skea 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 otheb-xeisd rb +.k 2l08sxr 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 equilatera qdq6 hfn7nw.4l triangle. When a second charge of7q4 qhfnn.w 6d +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 charge of +Q placed at one of the other vertices?

  Which of the following ) ei3exum.h *gis not a vector?

  At twice the distance from a povz3fc-) x4s9 b 6uqnatint charge, the strength of the electric field

  Is it possible to have a zero elect ktrc5tydzl 6:j:v4w*ric field value between a negative and positive charge along the linedt4y:6 *:5k tjrlzcvw joining the two charges?

  Is it possible to have a zero electric field value between fku6r )j6xb 8dakzo:3gzo-t*two positive charges along the line joininf6 ko6 8bzuota )*jzdgkr:x- 3g the two charges?

  Electric field lines near psitive point charoo s nr jclk t9io2e4g )u:ze2pmt598(ges

  The electric field sho4 e7b/ttk9 h6zpft g8nwn

  Can electric field lines in*1/otbnscx+hglu(6 qk4, mtx tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elkxix)e(p;6 hkaxf2c* ectric field. Give a statement concerning the 6xap k (e2;cf xh)ikx*electric field in the block's interior.

  If a solid metal sphere and a holl 5g qlyvi+ n6sgqk+99 97thlglow metal sphere of equal diameters are each given the same charge, the electric fieldl nh lv+gqg9gy957t6lski9 q+ (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woacz,u/75:8 a z d0fex+khrmzy oden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface:ze ,m8rdx hy/50+ zuazfka7c?

  If a conductor is in noxgcb7)-u3. bz (uaa electrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metz9sya.j*a q*ms5+ /txbn*c fjallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphecany.x*m sb/ fzat*+*j jq5 9sre has

State three properties of +u1 r5a:f4y(qoqxy ( n0ho 1xaa.wwpoconductors in static equilibrium.

State Gauss's law.

  The charge carried by one elm.gsa oj1 -)fgectron 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. ymrol5x24ykw/t,c a9How many more protons than electrons kw/ t,4a2rc lm59ox yydoes this piece of plastic have?

  What is the charge on 1 kg of prdn d,yoja 6 d)4yu;w9notons?

  An atomic nucleus has a ch i+1e.mlh3 ipetq w-q+arge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, serl8n1q+u b i- ji+8 (ydaf-dkkparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between thed(ani+1qdu-br8f+-i8k yjk lm?

  A 1.0-C charge is 15 m from a ljkep) 5)x1kbsecond charge, and the force between them is 1.0 N. What is the magnitude of the seco)xl5k)b jepk 1nd charge?

  Two 1.0-C charges have a force between them of 1.0 N. vm m+ g1rn c09hqmx +i w4t6l+axs3mt; How far apart are they?

  The force between a p 3tw:;:g20;eptoyw)k mrn h b$30 \; mC$ 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 theytnpvb / 6+1 qbl xe.j6n-q.a3qbv rcq+ are moved to vbn+xj.q/ 6 .b6t3prq qec-vqbn a1l+ a new 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 yh1:4fdck5 kffirst charge is at the origin, the second to the righff 4ckd5y1k: ht 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. gzy)g. yyd9: vA 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 are the magnitude and direy. ):gyzg9vydction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at tzg.vc6uc0(yooh;e t4y; vv2xi 3oh s+ he 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. xthcio (e o6cvz34o +;y.sg 02yv h;vuWhat 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, an l d*1d0.gou n*vwy/wutn 4z:od 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 forl dy14 .nwwvg*/tu nodzu:o *0ce 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 mvaosq: )5 x.eff,r 3o-v1zcvv, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chargevxq,fo 1vvo -35:fv .c) zrsea?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0rikv -mfeq5,dgmr8 a6,) 1slt nC is at (0, 0.10 m); Q3 = 5.0 nC is at q,-g6fdarkmti 1 r ,sme8l5)v(0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verd )amw+gyt6 ah+muc gs- o06i0wjwq,.tices of an equilateral triangle which measures 30 cm onawc) j om.m d-hsugw0+gt +,6qy60aiw a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ani d0g t2;ajmzkt;v7 fymdl :98d +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 8; jgvya9d; m2 :dl7 0ztkfmtiof -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0swe dyr1qmp f*t0z/4 )-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedm1 e d)tfz*yr/40 pwsq so the net force on it is zero?

  Charge +2q is placed at the orgtso,faek*6.iw s/ m0 igin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it i i /*.m0tk6waseg,osfs zero?

  A copper penny has a mass of 3.0 g. b e4dvotz4;qt3eq( y: 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 of2kg cyptb,gjc:f( fg17zk8gr : ls9:6w2omsq gravity by the attraction of a fixed proton some distance above 18kgb: :k,fwczqsg yco62ltr( 7:gf gmsj p92it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducf zec oe8:;5o6u -i8h6qctamoting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untic8e5:omh; -ooq6iua6t c 8zfel 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 elece 3ihqeaun-. a)ht 7u2tric field at a distance of 1.0 m from t)anqtiu7-hhu2ae 3.ehe nucleus?

  What are the magnitude and direction offw+ bngb q-1 *i 2oq9xu-vfj1i the electric field at a distance of 1.50 m from a 50.0u g*fo-n9fw q ixbvij1 +1-bq2-nC charge?

  A 5.0-C charge is 10 m from a small test chargb2 loify 2p;s;e. What is the magnitude of the electric;yb2ps 2ofl ;i field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ofy;ux )q./)4xjytkbykq1*l*j x4y z eq the electric fiel4 y*l ;.y keyzx/ qj)xxkqqut14j)b*yd?

  A 5.0-C charge is 10 m we89dnz2cdx( r 8c6w. igi.csfrom a small test charge. What is the magnitude of the force ez98cwcr6xg.i8 cs( . d2deinwxperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value ofch+t3 ;xp:2stgb))a cqh9yq q 3.0 C and are separated by a distance of 4tpa sc3 + qy)th9h)cqx;gq: 2b.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sticm. qo a9i2t):s.lobbok and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the .:b ibqt2o omsol9.a)30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and4k8x pump)e;7dyc 0f1p j s30oged.je a -4.0 mC charge is placed at the 50 cm mark. At what poin)ydp;0m 1 x8g0up 4sj7. poc3efdkejet 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 az oi.2p7gbn 7sx0,z gdnd x = 0.20 m. What is the magnitude of the electric field at the pog.2,0ion p7z 7z xbgdsint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The 7crkv7 o5wiw4 dyl-z.last corner is occupied by a -3.0 mC charge. Find th zk5.wly virco747 wd-e electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at muy; q6 g5wmaclt8h/:aa- .urthe 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). Whatw5./c6mt-g:;8ua qr haaum yl 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 uniform i)60r fz :h j0+wnb8u64oqywp*wlx/mm0dwt t electric field. What is the magnitude of this electric field?i:+8hw tjwfn0zb op0q4*lw w r0t 6x/md)y 6um

  A particle with a charge of 4.0 mC has avmvs1 .b f8r 4xiu,w-d 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 4e 13 x2uh2 vz/cmj9j3ebnigi6s:nzo field of 6000 N/C pointin1v4: ijenoum3zhb ji3 229/s6exnc gz g downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCbftv3 /bcmqydt++4 r 1. The ball is placed inside a uniform electric field, and is suspended against tbvcyr+dtm fq41b/3 + 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. What6guxmi/k.z*2 kow6 rma2b2 d.,:foylfer mo - is the magnitude of the electric field 5.0 cm from th/2,.adfobi6glzm ormu2*m6-x .ry:ok 2 kw efe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 32:fd gmx1idv mn 8v7jdvo6) h8.0 mC. What is the electric field 6.0 cm from the center )v8m6ji:xmdvo1f ddvg 72n 8hof the sphere?