State the law of conservati, vgabfcoi:ls 9cu 5)srek2*1 on of electric charge.

  Is it possible for two z zomqu+;2m8 onegative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each othersp1s2*z4 m4f 4 xy5r )zln jo8da*fsik?

  A glass rod is rubbed with a piece of silk. During the process 879vgz 5lyu dtthe glass rod acquires a posi5zgt dyu9l78 vtive charge and the silk

  A proton carries a

  The model of the ato; m 73/a8a asgsap-pt,wu5j fom shows a

  A neutral atom always dlcslv25,y g./a5 qikhas

  An atom has more electrons than proton i+ytziwsbi3s(9os 9 5s. The atom is

  Materials in which the elect4 sgj+n10 xmh jg6afh;rons are bound very tightly to the nuclei are referred to asa0 4j hhj6+ngms1g ;xf

  Materials in which the electrons are bound very loosely to the nuclei and can meoyr+fisv 9 kokz)+ito +- -t;ove about freely within+ro ookizk-s;yvtf-i t )++9e the material are referred to as

  A negatively charged rod is brought near one end oddkbair-( :ir+nxlr u01 q9-wf an uncharged metal bar. The end of the metal bar farthest from the charged rod will bei(rw r-xd klbq-ri au09 n+1:d charged

  Sphere A carries a net positive charge96zbwe6y0qas eo5h ) p, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. oy sp6)qwh6a0e b95 zeWhich statement is correct?

  How can a negatively charged rod charge an electrou3qd 9ci)8hs;zicixij6 -(rov tkof8 *s)4 u vscope positively?

  An originally neutral electroscope is briefly touched with a positively /ohr 9e 5u.jnju,w uo(hby77 icharged glass rod. The w,uh/ en h9.uy(j757ibjoor uelectroscope

  An originally neutral electroscope iswtr ztn,nk3k:vl: t+) grounded briefly while a positively charged glass rod is held near it. After the glass rod3nr ),tznw+k tvtk:l : is removed, the electroscope

  A positive object touches a neutral electroscope, apt9u4wi 4oa-a) qvyv4 hu4x-i nd the leaves separate. Then a negative object is brought near the electroscope, but does not touch i94vuhu-y 4ipatw ovaqi)4 4-xt. What happens to the leaves?

  A large negatively charged object is placed oubgf* b 13bbcmpj3+r:n an 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, strikep*j3c:b1bb3bf +gr m us 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 thz1/jow 2nil /ge Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is5fov2w40bu3s 4onhlf larger in magnitude than the seconv452wfuonb 4f lo0sh3d charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e6r, tr 0+p:hbcw m5wwzach other on an insulatewwc:, +t rmh56rz b0pwd table. Which statement best describes the electrostatic force between them?

  Two charged objects attract ee-+l7k sfnx6 v y6y8:epumyb)ach other with a certain force. If the charges on xk :86y7 evm+lef-6 n)up ybysboth objects are doubled with no change in separation, the force between them

  Two charges are sepaap g8ya .a0(nsrated by a distance d and exert mutual attractive forces of F on each other. If the charges are separated pan0(g8s.a y aby a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fo)uzeg;6gu uh28t-je7s/ pic irce F. What happens to the force between them if one chs2;i8 )u6 pzght u/ce7iug-jearge 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 to

  An electron and a proton are separated by a distance of 1.0 m. /kjm)gb t: xe3What happens to the magnitude of the force on the proton if a second electron is placed next to the first elec3x)jtm :kbg/etron?

  An electron and a proton are separated ba:j7biz94e8ab69ha/zgc kd h y a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placezgjc:bed/ahh7i99 84 kz a a6bd next to the proton?

  An electron and a proton are separated by a distance of 1.1pqc1c g8nixrgh )n 0,0 m. What happens to the size of the force on the prog n1p,q xir81)0cngch ton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a 9ml y3 /1nknclsquare. When a second point charge of -Q is1n3 cmy/l lnk9 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 centkm-n/fx )g56+f1 jsdv rgcwe17 il4vv roid 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the otherl c+6m- wdx571fnr g)svkgefi4jv1v/ vertices?

  Which of the following is not a vr) 7ca3s-ma:+q tfpktector?

  At twice the distance from a point charges) (uyzu dp/ar952uwr , the strength of the electric field

  Is it possible to have a zero electric field value between a negatl3cy2 ebx rmj;fh -r/4ive and positive charge along trb 4-/feh2ycxl; 3rjm he line joining the two charges?

  Is it possible to have aobytfox z bbn* 0dy/,0co qvai;z-;-6 zero electric field value between two positive charges along the line joining the two charges?bo;bz0oy0at q;- z-/cd6,in fbv*xoy

  Electric field lines near psitive 9i0hjo-(v-f bx2 c tl2h o5svbpoint charges

  The electric field shchkx5 j)fhm*:own

  Can electric field linesb .fly zkh/7t adq3lrd0;6ec4 sqw ,b-9vd ar, intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in/ xck w95kuhq+ a uniform electric field. k/h 9q5+cwxu kGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal 8fdvi* druphsv h;3 0;sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the srv 0hp;fu;s3v*di 8d hurface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform2sb+;r bgx4g)btqu(i electric field is directed +4i)gqb;xbbtrg (s2 ustraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic ,wf0.w8cio-evk1n p i equilibrium near an electric charge

  A positive point charge is enclo*svc-dg v9 g9bzb8.bssed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a pocsz dv-s9.bvb g9 *gb8int directly above the hollow sphere has

State three properties of conductorsj4 jp6pp9ns0q in static equilibrium.

State Gauss's law.

  The charge carried by one electron 0n ;7oh;x1j16e y5btbqsegjois $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net*35 )3xnwiek)nv z jym kpgh+8 charge of +2.00 mC. How many more protons than electrons does this peyjg )nh3kz kpmw)i8n+x *35 viece of plastic have?

  What is the charge on 1 kg of proty+d07zm*uffxf ) gjf, ons?

  An atomic nucleus has a chako3 wr1w u.(ajrge of $+40e$. 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 valw.q susb+po1jr yt a ,;n -*cd(gg6n(o k30ejkues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between tuts(pbo d,0c+ qjok6 n* ; ewyg.r3gsk a(jn1-hem?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.d)3lmw(fiu8+a/i t gu 0 N. What is ) (dm/3liuuifwt +ag8 the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arz8xj o/*yj-u oi/,m3oy)jh jz e they?

  The force between a x e3 f9/zsfyt3nh,o-h$30 \; mC$ 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 thn:1bjv6d5 kgxg( fp) ley are moved to a new separation of 8.0 cm, what is the electric force beg k:bv x)1gdfljn 6p5(tween them?

  Three identical point ixmws/ ;;bacroj-n +8yghm4 5 0,dclfc:x(xs charges of 2.0 mC are placed on the x-axis. The first charge io s bi0xxmlrc x,g4;w-c;shc/8jf n:yd a5+( ms 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 charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed)-drtok*dl .z at the origin, -2.0 dd*rto)lz k.-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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at /a0yr8/ws 1gkw m-cmo 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 ywgom-r a sw/ m0c18k/the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at tw-//;ae e(acxswl; h xhe 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 actsxw;l-c es;a/( awe/hx 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 m, 0); Q2 = -1.0 nC is at rf),n.p y nm7;rp/o tm(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mnt/; o) nmr.mf,y 7ppragnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,4;w6/x*pl boyi zq/ed 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 n4*el/; oxywp6 d/qb ziC charge?

  Three identical charges of 3.0 mC are placed at the vertices of.rfw8 u9zd(md an equilateral triangr. fddw9(m8 zule which measures 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 3:pa: ry/o.pkiw cxmj8tfg// and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be poss.gfykiwx 3j mpo8// ap/r:: tcible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9h2f0ek dn g3dl2od63 z.0-C charge is at x = 4.0 m. Where on the x-axis can a third cne l2d3k0o6 3d2zgdfhharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ch*s2fn;.pife kv qc: -barge -q is placed at x = 2a. Where can a thir:vscp *-f; fekqnb2i.d positive charge +q be placed so that the force on it is zero?

  A copper penny has a masst h0+5sx gwzt* 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 gravityb c.hjn d9q+b0/0jysc by the attraction of a fixed proton some distance above it. How far above the electron is t0.0b j dhsc c9q+n/byjhe proton?

  Two 0.20-g metal spheres are hung from a cohhf .uj 4,.a;qg/9xsm tk-nxtmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces - kh./tu;hs. an fjqgx94 tmx,them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a c;uxvvxsi jr:- am 792charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?;xvma-i: s2c 7ju9xrv

  What are the magnitude and direction of the elec qf0 oue*xp15wtric field at a distance of 1.50 m 0xpq*ow51feufrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mayvbgau x32d 6k;car90 7 0vhbfgnitude of the electri9crv bu;b76 a0 xkyvg0ad3h f2c field at the location of the test charge?

  A 5.0-C charge is 10wkbfn g s6ma7tv.54b4tv0pmgt/ 93zh m from a small test charge. What is the direction of the electric fielg f3 mgv4/nth0bp b sw4vkt 9a5.t6zm7d?

  A 5.0-C charge is 10 m from a small tes-l-an94lex e;bmzvw+ t charge. What is the magnitude of the force experienced by a 1.0 nzvw-e9 al e;m-4xbn l+C charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are se4l 3ebia;olu (/e w4mkparated by a distance of 4.0 m. What is the electric field at a point midway between o4kuwmel(ile 3/ b4;athe two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char+/v*bs8ds vq8m(6 h elf1msmwge is placed at the 50 cm mark. What is the electric field at the 30 cms*wmesm 8f q/(6s 8m1+d hlbvv mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stnk)-wc : ytsp-ick and a -4.0 mC charge is pla)s:-k tpcw -nyced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.fpq2k*xg; hswv8d,b0f b7 8ss 0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric8w0b 8sx,bf q*dvhs2 p 7s;gfk field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Tq5s*; gu7 yflcg pj.-the last corner is occupied by a -3.0 mC charge. Find the electri*. gsl5-gytf7quc p; jc field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placa lssm0s;z-m /ed 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 field at thms ;s0- amslz/e square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed i ng 0is(hdj64enk:(d8tx+ph56 oolms n a uniform electric field. What is the magnitude ofps5j8k+:h(d0oom d6sl(xtg n ne 64ih this electric field?

  A particle with a charge of 4a zczoimn1 qkxao.3)p .vk.6 p5i01rd.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 0.120 g i0oevv/hn/wn b9l )9 lns placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it n)w v /nb/v l0eoh9nl9to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCdcll2kx0947 *yw e17buw:zoqn)z bf e . The ball is placed inside a uniform electric fiez dexn7bwy1f0l)e :z*9b4lq 2 7okwu cld, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10i.if;f)c wnr*4,l leu cm carries a charge of +2.0 mC. What is the magnitude of the electric fielwcfi.unerf* l4i);, l d 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mr)jdqo;xv w4 33 ok(fnC. What is the electric field 6.0 cm fromv jfo) ox n43k(r;dwq3 the center of the sphere?