State the law of conservation of eljbq+r pzc8r jd36c;8qectric charge.

  Is it possible for twcg9 -7ydo, i b*lgpbp1o negative charges to attract each other?

  Is it possible for a po88pbgyce ;mi;sitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri t k7o3an/ chj5y48csung the process the glass rod acquires a positive charge a7ac8o3us4cy tkn5/j hnd the silk

  A proton carries a

  The model of the atom shojnv;l9p+jd5 zfa zfk 7 e:a9jegcx 56o;z.4ad ws a

  A neutral atom always has2x2w*s. ufke x

  An atom has more electrons than protonsleoz/ , l;z7j7tp) h7:warmih. The atom is

  Materials in which the electrons are /x u)bywg.*pb-wtz-lbound very tightly to the nuclei are referred to azblt.- pxu/yb )w -wg*s

  Materials in which the electrons are bound very loosely to the nuclei and cb9 lo pi.;fhkw)r*bji4yn +,xan move about freely witiin, o jrpkw9;b4 yl+*b .)fxhhin the material are referred to as

  A negatively charged rod is brought near one end of an;qyh+4 s4oycg2q.s+gcdihe n )kj. ;w uncharged metal bar. The end of the metal bar farthes h.keg sy;)c+hcgod ;qwynq4j.2s 4i+t from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They lot. qn)5xpdg9box)m; 8;- 3devx qnxare placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groubepnto o;xxl3v95xmq .)-;dg8 x)n dqnded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelk9qa: xtv bc1s 2cwehhr 9s-w52tn/v8 y?

  An originally neutral electroscope is briefly touch(xji52q7 qu,mpg 7zvhed with a positively charged glass rod. The g72(p,qzhvum5 q 7jixelectroscope

  An originally neutral electroscope is go:-3zeys swrcud6wcsa91 7;n rounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopearswyn7s 6e9:;cz3 - scd1uwo

  A positive object touches a neutral electroscope, and the leaves separate. /q/ m(r u1 tqgfzyn8*wt)f 7wxThen a negative object is brought n(qy r wmt1* uz/8n /tqgx)7fwfear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. im/pwdw9,g/ c 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 g9 wc,/pidwm/ 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 thm 3nc(l7b2-e uu7s ilve Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distbulo 5k7jfs 6y7(h-ov ance d. The first charge is larger in magnio6bl(okus 7h j7f y-5vtude than the second charge.

  Sphere A carries a net charge and sphere B is txe0e; +f m,gineutral. They are placed near each other on an insulated table. Which statement best describe, e et0+;mxgfis the electrostatic force between them?

  Two charged objects attract each other with a certaae h11cym -t.ain force. If the charges on both objects are doubled with n-1hatmc1ye. ao change in separation, the force between them

  Two charges are separated by a dilge/:cyt ol8)t)y f h.stance d and exert mutual attractive forces of F ol:o)8fc .g)t/ ylth eyn 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 happenshfz d,4 bg ceqs8v-;t/ to the force between them if one charge is doub/ ,sbzq8g d4;-t hvcfeled, 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 to

  An electron and a proton are separated by a distance of 1.0 m. What h7d,clv w5 c+cqn f;o3vappens to the magnitude of the force on the proton if a second electron is placed next to the first electrovc3fdc ;7 lc,w o+qn5vn?

  An electron and a proton are separated by a distance of 1.0 m.u,qy-m;1lryi), j0go0hh f hj What happens to the magnitude of the force on the first electron ; hui lj)y10o, r-yfjg,hqhm0if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to fu t+v9qdti l/, ;;,kupgb j)lthe size of the force on the proton if the electron is mov uvi9l/blutftp ,;+k),; gjdq ed 0.50 m closer to the proton?

  A point charge of +Q is placed at the cid5l9pv 9dqi*enter of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an 599vd* ilpdqielectrostatic 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 yk ak 3)xfle4o u 8+cl56xme*ydnj; 9splaced at the centroid of an equilateral triangle. When a second charge s8 njk ex;4xl*)ko5uc9d +fmly 3e6ay 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 center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a ve *k6xsft(se6gctor?

  At twice the distance from a point charge, the strength of the elecwxs6jah mor)z .p);w4tric field

  Is it possible to have a zero electric field value between a negative anrhow-7s)70vxo*u .euj i p jj1d positive charge along the line joining tjrs7 *o7v1ou hwe ).p-i0xjujhe two charges?

  Is it possible to have a zero electric field value between two positivv0c5a2fs *7 hs jwhqvueis 3)2e charges along the line joini3uv h0* 2i)jqs7 5eh2aw cssvfng the two charges?

  Electric field lines nea)g/ zm*r 9,x3qgx q sq-mq+yafr psitive point charges

  The electric field shosu9k ni *.v+yy ,* ,mi.a3xthqy9lem qwn

  Can electric field lines intersect ipac c30iiy 7(pn free space?

  A solid block of metal in electrn lqk41/bc))ugz d;,h g:rjt gostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiogt:kb;)c /,l )jdr4uq hggzn1r.

  If a solid metal sphere and a;u+mv4nqzue,p h /5ca hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and uc /, 5zh+n;4q pemuvathe surface is

  A cubic block of aluminum rests on a wooden table in a region where a uni( zau /qy m-y;82f 1xogp5 3*jytjqbnfform electric field is directymp5 j/zyjqq(t8gbffan yu* -x 3o 2;1ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elxb4wj/ua,ue ys -8h4 cectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounky/j9i7h -v *hrl qmp8ded. As compared to the case without the hollow sphere, the electricqryvj8l-/m 7*9hk hpi field at a point directly above the hollow sphere has

State three properties of conductoy v p.l2 bd :xl1+dmgd8h/vbc*.vzh x2rs in static equilibrium.

State Gauss's law.

  The charge carried by one electr:ev0g2+,kebn 0 /zijfej nj+ don 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 n u cijtdgi)uhfpl(ig5o)ymag)7/503 et charge of +2.00 mC. How many more protons than electrons does this piece of pld/a5iu)g)5h t)0 7myo 3u(fpgici gjlastic have?

  What is the charge on 1 kh3+iozujq ejj 2/y2q5 g of protons?

  An atomic nucleus has a charu:ww pb9 sd-w-ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.m j5/wu58u9 zabnf4 fggc 5;lg5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elefgczf l g w5uj5a5; 9n/m8gb4uctric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force u 6jb )d/woa htziljk/;d2*5qbetween them is 1.0 N.6b wdt2;uk 5jlo/j zq*d/ ahi) What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tarezn(t/:g+ a6os;i o hey?

  The force between a k(eu73rmtr(yhfp fyq j , *j*6$30 \; mC$ 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. 9(olpck-5 s4avr,yxh If they are moved to a new separation of 8.0 cm, what is the electric frkcoly4a p-5v,(h9x sorce between them?

  Three identical point )gy:s bnw g fk9gcf8/ys7) k;jcharges of 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. What are the magnitude and direction of the electrostatic force wh gf j98y; 7ksfc)gsg/kw) bn:yich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at vz6owb2ou hl1n fmjt)7 lp.p(e)b03nthe 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 ofblj fn1t(uehv nz b)w2.)0ol 76p 3mop the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2 nln-se z ,p o,ad*1u86l2k.kh efgntut9c v4;.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 ch tps6g kdh 1*.nunk,l;8ozte ae -2 luvfc,4n9arge?

  A point charge of +Q is pl*o 3drelqzl9 3aced 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 charel9 *3lq d3zorge 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); Q3i ( *+1e9 yzukklzk pt;.es,im = 5.0 nC is at (0, 0). What is the magnitk p.em;k+z ts*kl,y9u1i(izeude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.f2ad7r jysyz0 u4 i;2u30 m, 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 force on the 5.0 nC charysui2u7 0 zyr;2f4d ajge?

  Three identical charges of 3.0 mC are placed at the vertices of a9 dvis3l* wb15e*tx;v6 rp8lcpa o,kqn equilateral triangle which rvp p 9 v65qcsa ,*31k;bdwiotell* x8measures 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, which are separated by 3.0 m8jg;w7 m lp gidu73rrg+dv8. b. At what point, on a line between the two charges, would it be possible to place a l87b.vg;+7r3 dw8pmr ui jdggcharge 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 , :dlz7bv;sshis at x = 4.0 m. Where on the x-axis can a third charge be pladvb zsh ;,s:l7ced so the net force on it is zero?

  Charge +2q is placed at the origini:2*hg: kgyx,)tt2; l3g hbt5llgph a and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tl g2 2x;ba g35 *htl:hh: gt)kig,yptlhat the force on it is zero?

  A copper penny has a masstmia5.9-k39k fngusep p;cpc( 2 7p ai 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 gravityw4,t;7a4j mx 2ub qjysve br,9 by the attraction of a fixed proton some distance above itx 9ymsu47v;tawr2jbqej ,,4b . How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 7d1s7i(r4 wvzp *m brnthreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglemp7rs (7z14dnvrb *w i 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 21,gblmwq(j5w n(ph oc9/owxib0h 5 q magnitude of the electric field at a dista l cqwjo5qgwox0 b(/9nihw2 b(pm5,h1 nce of 1.0 m from the nucleus?

  What are the magnitude and direction ;gx6)c3z,h o*0kgp+ .ui irv twiw3snof the electric field at a distance of 1.50 m from a 50.0-nC charge?cx puno0kv3i6;wti, gw )ihg.*rz3+ s

  A 5.0-C charge is 10 m from a small test char5 -ow wsqoo47ppdkl7e:v aus +e-,an;ge. What is the magnitude of the electric pn k;al7o wvo5,a74o+-su:-q swp ede field at the location of the test charge?

  A 5.0-C charge is 10 m from zwo js( (.gvb-c: 5iwa9u8uhoa small test charge. What is the direction of the electric fie(9j u8 osh gi5bvaoczww:.-u(ld?

  A 5.0-C charge is 10 m from a small test charge. What is j-n6my+ph,i i0 -.e cr*nojez 26 kcrxthe magnitude of the force experienced by a 1.0 nC charge placed at the locati6-n6,-i.+rk j*2mpexzoync c0hei rjon of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofe:jt fq5ul;* ifs)f4m 4.0 m. What is the electric field at a point midway fmejl;uqi)f 5 :s*tf4 between the two charges?

  A 5.0-mC charge is place c9;wzfg+0dxn6bdxfst4l: g0d at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the ele+d bf ;x0zs4g 0t gnlxc6dw:f9ctric 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.pd v;n wus2w-)0 mC charge is placed at the 50 cm mark. 2 usv;dw)wp- nAt what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC aowr2 (p8njz t:oqsd*(nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electr(so r8p*: o(wjt qdz2nic field at the point midway between them?

  Three 3.0 mC charges are at the three corn w3hlo+ v aymo77*ax0kers of a square of side 0.50 m. The la7 ox7a0hakv3l +o *mywst corner is occupied 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 side. 5krfr+hq ef 1b p,*y/hiok-w.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 firf/k,f 1+-rk 5qoiybh*e. wpheld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unocu-(lh a /9e62 sgmlciform electric field. What is the magnsu9 l6c- egal(2ch o/mitude of this electric field?

  A particle with a charge of 4.0 03 g/cf5ecj apwiz26rngh,0opp27e v1 ,xhlxmC 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 elec:zny;i+dwllb:, omk, tric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspel:nwd:i;lzm, y, o+bknded?

  A foam ball of mass 0.150 g carries a charge x+y*3 m;xmrwzof -2.00 nC. The ball is placed inside a unz xw+rm x*my3;iform electric field, and is suspended against 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 +a3f z p)vsgh bgx(ns9+ f,uh732.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surf973hpvga,f+fshz nb u)3sx( gace?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What5pner y h7letjciw6 m2fb9q v(1e-w2* is the electric field 6.0 cm from the center of the sp9 re ylb*hewqm(7pj-f6wvi2 5e1 t2 nchere?