State the law of conservation of electricjbl 3k8cyt5bsw,xi9vq(2k7 a charge.

  Is it possible for two negative charges to ata v gxzkop uqm8ya/0/:/w/g ;)p:yvputract each other?

  Is it possible for a positive and a negative -l sayoy br5:3z-x /efcharge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proceso*j9qap4q 7rv +rwg;us the glass rod acquires a positivr 7+4qjvq9 r p;*waouge charge and the silk

  A proton carries a

  The model of the atom ozp 6,o;jc+3os w -o/s,fvragma g-f, shows a

  A neutral atom always h7j;v/ rf+i*,csnlu of atgi,;as

  An atom has more electronsknr(,su 2w8s-e*9 en wrt qgj- than protons. The atom is

  Materials in which the electrons are bound very tightly to the )-6uqi9mhc wtbay+y 80fn:ms nuclei are referred i ut :)6+cqymwsbn 9hf m8-0ayto as

  Materials in which the electroeln5qts-;p65 .8 h v-eg mgrw(d7irwpns are bound very loosely to the nuclei and can move about (gg6e.5d-qsm5rnp8; -ietlv hwwrp7 freely within the material are referred to as

  A negatively charged rod is brought near 7o8 v-e/r*kqgq*csjosik/.r one end of an uncharged metal bar. The end of the qg s o/*/kr r-.q8i7jvesok* cmetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and -lve bhb.,3szsphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sta -h3velszb., btement is correct?

  How can a negatively charged rod charge an electrom* ,zqf4nm- 4e ypxy+we17tarscope positively?

  An originally neutral electroscope 65i-9sm nisj wis briefly touched with a positively charged glass rod. The elect6 j sn-w5m9siiroscope

  An originally neutral electroscope is grounded li r7psl(+moh er4le,0xkj2 -kz2x,lbriefly while a positively charged glass rod isxph 2k7z(lx4oj im02 ,k-sle,rr ll e+ held near it. After the glass rod is removed, the electroscope

  A positive object touchetek 9* 6k7jp(n ;ztabqs a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but 6tbze;j na(p*k kq7t9 does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tab*mnql2w +fh *qle. 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, stmw2h l+qfq*n *rikes 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 t)yyxh ,az3zl7f2x 3ak he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isu0*r/aw, hsq5+uo ktr larger in magnitude than the second chargo/+ wk 5t*h uusra,0rqe.

  Sphere A carries a net charge and sphere B is neutral. They are placed noa5j ,91y.ipag ) pjcyear each other on an insulated table. Which statement best describes theg)ao , pa9j py.icjy51 electrostatic force between them?

  Two charged objects attract each other with za,ayl +btmdrdbyv e1 /emd3x . 8o,*8a certain force. If the charges on bo ,bz8 r,y1x*ab+ lv ad 8mm.teoddy/3eth objects are doubled with no change in separation, the force between them

  Two charges are sepan22b+s ffzt9lj6:pd xrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fortdbzs2f :np69+2lfxjces?

  Two charged objects attract each other with a force F. *y (7lqnq, a,j 6cmnyqWhat 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-foa76c(q y ,l,nmnqqj *yurth its original value? The force is now equal to

  An electron and a proton a6+dti jl,7wf ;0mew oore separated by a distance of 1.0 m. What happens to the magnituitljof6+dm;w 0 ,7wo ede 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 distance of 1.0 m. What happq 0+*e-pibormg3;av d ens to the magnituao ;qdi+3pgv -r em*0bde of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dn:r/a3;(ncw,bh g x sdistance of 1.0 m. What happens to the sizsd3gc/ w r,n abh:nx;(e of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of.tdsqq e *vq/1 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 force acting on the positive charg qsq1/q*.dvt ee at the center of the square?

  A point charge of +Q is placed at the/;llw3g:ld (/ k n(cgd -eoxhw 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 the mah;-ngde g ll/o3xd (c:/ l(wwkgnitude 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 vecto z;/*x3gju 58q4a. qqzoa4yskld+o se c)txz +r?

  At twice the distance from a point charge, the strength of0v z) fz/dhpyt68f gf: the electric field

  Is it possible to have a zero electric field value* rjq d92e:bwt1b:/3kbv pvgr between a negative and positive charge along the line v pw9b:1edtv2:g /jr3kqrbb* joining the two charges?

  Is it possible to have a zero electric field value beu df92h5i4 5vgqg n*tetween two positive charges along ft in4u5dg5 9e2v h*qgthe line joining the two charges?

  Electric field lines near psitive ry,)0 co vsf,;3b xwwopoint charges

  The electric field shown-sjh-:mtaz 0h

  Can electric field lines intersect in free svwjx2n b9h0u3zm3 cm *pace?

  A solid block of metal in ele*x) cayoab3h 1ohs2df*c*we;ctrostatic equilibrium is placed in a uniform electric field2d fabohxsah*y* )c3 1*;owce. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphbln/y e cd 32dn+9n rnls9i5(zere of equal diameters are each given the same charge, the electric field (E) midway between +(n3rd25nl99/se y lninzc dbthe center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherer5dg209eg gzxr (g mjmk)s.(vil)9x n a uniform electric field is directed straight upward. What can be sai9lzrsvm x).jr(20ggi k5x)m d 9ge(g nd concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nea;jwkl w41i j*h om+ x,ms-n,vow)gv o2r an electric charge

  A positive point charge isg uv e.j)p 9xpdbwluwc2b 6.24 enclosed in a hollow metallic sphere that is grounded. As compared to the case with gecu4pux2jb l9wd. )6.vw 2bpout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilih *fucu)dds1b( b *eg,brium.

State Gauss's law.

  The charge carried by orwxv,9 jd*4l.syp c y9ne 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 netyg;y/x8j81hvay1vc q charge of +2.00 mC. How many more protons than electrons does this p; chyjv/8x8qy11vga yiece of plastic have?

  What is the charge on 1 kg fr lrei*y hrdb 5t88a-n;pm,+of protons?

  An atomic nucleus has a charge of)z.;c n v 6uoxanz 0wg4fa.8hj $+40e$. 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 valgj d: bwqtz:. aob893m( ypc+aues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric fqgcp:(8 ya +w3jam:bto9zd b.orce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1 gi9prh ) l 5c-t2c(f/:ixldwx.0 N. What is the magnitude of the seccw l 9i:rlcxf x dp/t(h-2g5)iond charge?

  Two 1.0-C charges have a force between them of 1.0 j7au703 5jep6*jjwiao, xs yoN. How far apart are they?

  The force between a la 9 u5wh:z*,knfs:o z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apxgo9 v1pu:eef/(k/7 jre+k dmart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between the1(ue:9 p7ee/v +fkmxoj kdg/ rm?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tq8aqqasw 4 du*5 u52svw2 h.ohhe 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 which acts on the charha8hwwq2 aq5du qv so* s2u.54ge at the origin?

  Three point charges are placed on ecn i (48krmd)the x-axis. A 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 magnnk4)rc emdi8( itude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2lkg(6f oue3)h ,d- ujc )lk8ua.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;ho-fu, ek3l 8) lu6kcg)dj(au 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 square, and a second poiny,b(hj64u qj5; af.o0ia wgkuo nf1.nt charge of -Q is placed at the upper-left corner. It is observed that an electrfa .h;fyboou5q 1j0ngia,6.kuj w4n( ostatic force of 2.0 N acts on 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 mr l4itb1(lfw1 jol t15, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magni151 olf(r1jbwtill4 ttude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC a4gbe /,2a kic0.amqqis at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forc k2meac.0q/bi,a aqg4e on the 5.0 nC charge?

  Three identical charges of 3.0 m+ 1s)k 4fkzuo5yvf.i rC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the eleksfzrvikuo54+ f y1 .)ctrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 mvmph(wa *- /qa(* mtrz. At what point, on a line between the two charges, would it be possible to place a chawmrh t/ pamvaq(*(*z -rge 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 i)dx8 4z pirxlcs c(mp3v+x (*ns at x = 4.0 m. Where on the x-an)vxpp3szr( d(xx4 c+il*c m8 xis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed atn j3r/m /:g;ck5 daylx the origin and charge -q is placed at x = 2a. Where can a third positivac:l;nry /d/5x m3kgje charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.quzuw: euio2*f cw: w-8 j2q/b0 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 th3y 96ewek nf27ufi4xv e force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is tkefv4nxewu f9326i y7 he proton?

  Two 0.20-g metal spheres are hung from a common point by noncondu;f(ixt.,v, /b dwg:ng w-t+fyh /p xlecting threads which are 30 cm long. (-,,nxidh wvte ;gg tffpbx/l./:w +y Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus ha bcicblfox 3b3cf02 -3s a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m f cx3cbf3c 0-bl fi3b2orom the nucleus?

  What are the magnitude and direction of the electric field at a distance h+wxl:i; prw+nx3yw, gh/lu+of 1.50 m from a 50.0-nC char,hpyr:l wx+; lnx+g iwhw3/u +ge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit5/axoa oc .so/pb0ov) ude of the electric field at the locatio/co0pox 5bav./o )sao n of the test charge?

  A 5.0-C charge is 10 m from a small t4(9theh;f fn 5u4yjlj hlp,: jest charge. What is the direction of the elhnf4, 4j9e jpt j 5lu;h:h(lyfectric field?

  A 5.0-C charge is 10 m from a small test chapimx; ji(nuj24 e*-5/psahn krge. What is the magnitude of the force experienced by a 1.0 nC charge placed at n*; 5k2j(uaip/4ixne - mpjshthe location of the test charge?

  Two point charges each have a v s f),ojg2b89 gn8wnqcalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tn f g8j89bnqw,)c 2goswo charges?

  A 5.0-mC charge is placed at the 0 cm mark oq27rm q4vbw8p k3b5 n+t,iy t9us3ylxf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fie ti3b,kn bq pl4358q9w tr2sv7muy yx+ld 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 charge. 6isi9yomf2 hr4 ;u7rlwbr(u is placed at the 50 cm mark. At wha2u97fui.w rr6rs;( hb lyo mi4t 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 = 0.20 m. e5cnrvy/ x)cbr4 3k* fWhat is the magnitude of the electric field at the point midway bc*f3br) 5ekxny /v4 rcetween them?

  Three 3.0 mC charges are at the three corners of a squari6xbuud3lc; dg(nx2 wx;q( c3 e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of thew ; ;(3l(id6 nxqud2uxxcc 3bg square.

  Consider a square which is 1.0 m on a side. Charges are placed at the xt* r9h j9;pjncorners of the square asjhn9j*9; xrpt 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it v 7*0i5. xi6hw0rlnn c.7yuffifiv u ty /l+l:is placed in a uniform electric field. What is the magnitude of this electric field?0y:l/vn..flw57h* l i+7t6n r0yc ffiuuxiiv

  A particle with a charge of 4.0 mC has d if5g1r,v-dja 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 field of 60007v .idb *bloc5v. z3ky N/C pointing 7k.* bvyd .czoib5l3vdownward. 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 -2s yzwczi.a;f 8v4+nk8 )+mufm.00 nC. The ball is placed inside a uniform electric field, and is suspended againsty v)z;a+mkcfz.mw 88isn4+ uf the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius d;c6j lggu,m:9z)tfk10 cm carries a charge of +2.0 mC. What is the magnitude of the electric l6 )u,c:kdfz mgj9; tgfield 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 elevvg, r4oopyr 8e0 z//gctric field 6.0 cm from the e/p g0rzovg/ 8rvoy,4center of the sphere?