State the law of conservation of electecr -73hjdah)ric charge.

  Is it possible for two ne,/ pn( et+k rho( jq*k9swaa3mgative charges to attract each other?

  Is it possible for a positive s32y ip b03.yc bguy1band a negative charge to attract each other?

  A glass rod is rubbed wih-dm.tw o2+0mn m )wnpth a piece of silk. During the process the glass rod acquires mwpt hnd2 .omnm0-+)w a positive charge and the silk

  A proton carries a

  The model of the atom shoy 5*afh. bq/agn(hhx6ws a

  A neutral atom alwayssio 0bi.5 1: ulq;eif/h/rnz h has

  An atom has more electrons than iukd)wnx-s1 sg8d , 8 ;a9qcbnprotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rw g3;y62bxv(z 38;ubwoo sr xheferrer 2h(wo6x8xosbgvyu3 3;w; bzd to as

  Materials in which the electrons are bound very loosely to the nuclei and capu/5-r71xo es ,e t0crsbm8g xn move about fseg u rbpx,c7ox-se8r/5 01 tmreely within the material are referred to as

  A negatively charged rod is brought near one end of an unch;efnu5n,s -vu arged metal bar. The end of the metal bar faru s;n-uev f,5nthest from the charged rod will be charged

  Sphere A carries a net posqqz;li0 u3/5mbucp p,0ze (( vsz 2tanitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly toucim lvs z(/50uq q tb(uncpe azz,302;phed with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge .hr wuv;e10bm e48mdpan electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargeb5iww ;ja w02qr r0kr-d glass rod. wjrrk5 bwr0w2q;0 i a- The electroscope

  An originally neutral electroscope is grounded brierb*fl pzw6 k z4)/uk y*a:;leqfly while a positively charged glass lb :zr;kfple)6/ z *a4 w*kqyurod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.f4cn*+ c;p.4y:oc h 2ir xzzqc Then a negative object is brought near the electroscope, but does not touch it. hzr4c*ycq+n .zx2f i;oc:4 pc What happens to the leaves?

  A large negatively charbp5 0,gvukr /u py*r(mor5ln(ged object is placed on 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, strikes the first ball, and stops. The first ball rolls forward, but does not touch the negative orn u,y50 *ol (kmr5/gubrvp p(bject. 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 Couxib. /w :ppv- obxb/1zlomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a xpi r c1xr*m(hmz+d* z .r7)hjdistance d. The first charge is larger in magnitude than the second(xj hhr*x.*r+zrpmz i)mc1 7d charge.

  Sphere A carries a net charge and spher. i+kvmwd.-ol lzr*j -e B is neutral. They are placed near each other on an insulated table. Which statement best describes the elej.ld- io*kvwrlz. m- +ctrostatic force between them?

  Two charged objects attract each other with a cer:x/jp4uikw6vuj8 y3q98u sca tain force. If the charges on both objec9avj4sukxi6/w8: uu8cjyq p 3ts are doubled with no change in separation, the force between them

  Two charges are separateh *shy2qvl. ao;z -1utd by a distance d and exert mutual attractive forces of F on each other. If the charges are se yvoz;l-a .* hst1q2uhparated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each y +ouudk9 .-j ky0 3 d1fygsoil5,+kulother with a force F. What happens to the force between them if one+ykllg1su i 5ojuu+kyd f, -9yokd.03 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 to

  An electron and a proton ar9qo. pr9 jcz1mz 87d3e8ekjloe separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed9.j1qzpl8 9jz 3dooe7kce r8m next to the first electron?

  An electron and a proton are separated by a distance x- rnco;rdu )8hr9y jz+c.v.hof 1.0 m. What happens to the mjdvnr.rc zu+hyx r)ho 89-c. ;agnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separan tkc )d9bp;a ae*oz95ted by a distance of 1.0 m. What happens to the size of the forazna5t ; )o kdcp99eb*ce 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 a square. Whcsmcnsu33y. j; 1h**6xeetu-7 htit wen 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 charh* 3 sy*7tu;wcet-ue s6jn cmxti3.h 1ges 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 centroid of an equilateral tu ld)bzod dmne:fi3 2nsm wuf 18;a*:2riangle. 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 ia) i wl nf:2d1smeu*d 3fdo bunmz28;:s 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 nl/ils:m(49q q tn 5xhoot a vector?

  At twice the distance from a point charge, the strength of the elecyyg:z sxxn zok* 1sp11r9l0j4a 1 hm:otric field

  Is it possible to have a zero electric field value between a negatilo:kf7 wd7 r.yve and positivf.k yw7:o lrd7e charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positi sj4 pxz(+; qazlpv)cpc7g07p ve charges alov77zxg c( p4pclpaz ; 0s+qp)jng the line joining the two charges?

  Electric field lines near psitive m w1kca zfo6vp+ / q+(ejz+wy-point charges

  The electric field shob,1dhmeb1 q.ce uagws:g0.d 1 wn

  Can electric field lines intersect inef0by 1 j,fime rgxgr197 dg7) free space?

  A solid block of metal in electrostr/ j,jzzaitn7 ip261xn dm49katic equilibrium is placed in a uniform electric f4xz1n7/n md,i paj irk z26tj9ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metaqdwtjy +:6-yg4 le ir5l sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the:y- wj trgeli4y 6+q5d surface is

  A cubic block of aluminum rests on a wooden t;j png: : 0mn5mq3elbvable in a region where a uniform electric field is d g5:3eq;:jlnmnb v pm0irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electxq, (pk3z*kykqlsk(:q* 1k:vvnkq2 srostatic equilibrium near an electric charge

  A positive point charge is enclosed iny; -k rje,hp-jp07jo0* fhqs d a hollow metallic sphere that is grounded. As compared to the cas,sq-j*rhp y0dje j f0-hpo ;7ke without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties )m mbn1ncl )5jof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elesc,jb3 r gji7dl87t;f h-b sw+ctron 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. *c fyh2a8fjgvd5 h6 -p -exnf3 How many more protons than electrons does this piec 53p2 ynffdv8xe*ha6-f hc-g je of plastic have?

  What is the charge on 1 kg of protons?il f3 q q6ct2;hv(kwa8

  An atomic nucleus hahpj5t*lx +t g 1.ht tf:,yx.gms a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepaejj y cdvq/bek7ecr-1,xk ) 72rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respect yec7j rbe,1 q72ckv/kdj x)-eively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second char* 3cugzk3oy 1jepi mq vwa129s ,i/or;ge, and the force between them is 1.0 N. What is the magnitude of the secondwmuicrs1opk ja9i, 32y;1q ovez/3*g charge?

  Two 1.0-C charges have a force between them of 1.0uzrm yyyl;c t sb0;2)+ N. How far apart are they?

  The force between a l crg hsygs+4sq;,: l7$30 \; mC$ 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 (t:n g18f kdlmforce. If they are(:d kln1m8tg f moved to 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. ul48i d,zbpv: The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mal:z8 , di4pubvrk. 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 o9b wj6js omq*f 6 wh;x2-6mnvof +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 direction of the electrostatic force which acts on the chs2 m6j-foh; 69xowwv*qjm6 nbarge at the origin?

  Three point charges are located at the followiq8z zao1s(4 ge: wmbl0ng 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 the magnitude 8a 14 0mbzswz(goel:qof the force on the 3.00-mC charge?

  A point charge of +Q is 7so iapyx6 ib/o:i(1u placed 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 forap su(oib1y/ 6iiox: 7ce 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 m, 0); Q2 = -1.0 tpe22w9ggu p7 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net fowt7p u92 g2egprce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is al p5(xs+ ses0mt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net(psl 0mx+ sse5 force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral;e- 21b v)5yx1hmxo9yr c aocn triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any ;c1e cyo-xoa 15yb v9)xr2nhmone of the charges?

  Consider point charges2rff u /k0 siw98wv- i+e-yo 5tifw8jb of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, wou28r w-fft9i508 v+y/jusw b -iwefoikld it be possible 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 and0atsz6crx/x(:8jg*su iw37ljz f i m7 a +9.0-C charge is at x = 4.0 m. Where on the x-axis 0:s*jglxztaf67 z3imjx i(swr/u78 ccan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cang6 b3k)ex2jvk xkb36vej kg)2a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3hpm-ap87l8pd9 g/ epj .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 attra7 ;s.c( u0v4nvodyvcn7s1 v9j2ii rpuction of a fixed proton some distance above it. How far above 7c9u in7vcr i syv;s2djov n4pu1 (.v0the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point b* z9j q3gy0qtky nonconducting threads which are 30 cm long. Both are given identical chayj3 kg*q qt90zrges, 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 has a charge m tac/ sk::p +5r1dseka0dvd,of +40e. What is the magnitude of the electric fieekd05 cads+ ka:1: pmrv,d s/tld at a distance of 1.0 m from the nucleus?

  What are the magnitude and(w)fvjav )(cy ch+qw 2zwj+s0 direction of the electric field at a distance of 1.50 m from a 50.0-nCa+ vh2c w(s0j vw wfqc)+(yj)z charge?

  A 5.0-C charge is 10 m from a small test charge. What is ts uza j 0/dx,zyc4i;1the magnitude of the electric field at the locai ax4,y/1 uz;dsctzj0tion of the test charge?

  A 5.0-C charge is 10 m from a small test ch/pfj8 n8, nmsuyoq2t; rwfg8.arge. What is the direction of the electric fie qwfmp. 2n/8; yn,8toufsg8rj ld?

  A 5.0-C charge is 10 m from a small test charge. W /4xy4.6 w g8zwpc6ytkwvx7dft cja1 ,hat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the te/wavcp 7 k,f jt8y w6 4zw.ct6dx14gyxst charge?

  Two point charges each have a value of 3.0 C and are separated by azz6 d/+; nljzqys uvua2/(x0vek3 9lf distance of 4.0 m. What is the electric field at a point midway between the two v ;nyze6v(3d0 kj2x /uq azl+szu9l/fcharges?

  A 5.0-mC charge is placed at t5 bjisc 8w9b(fbzg1 o(he 0 cm mark of a meter stick and a -4.0 mC charge is placed at the w5(ic1jof s9b8bgb( z50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a6o r*8 4a(oer5qjn;iip3h k k q9zu2fend a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargesj4nkp o9(rqoiu2kzqi8f 3*ee; 5a6 hr is the electric field zero?

  Two point charges of +3.0 mC and -7.0 muw- u1,+gefmfk 1etn;C are placed at x = 0 and x = 0.20 m. What is the magnitude of -+tfuuw;f1,e me 1kngthe electric 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. The s(-+6v j vc55dtfwfbclast corner is occupied by a -3.0 mC charge. Find the ele5vj-+c6(fw d5bv ctfs ctric field at the center of the square.

  Consider a square which 91t,i z ueeuz.j/n(euq/bm x: is 1.0 m on a side. 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)m/x/z 1ee,.i juu: n9 tbq(uze. 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 1znv/.x80k* swoo hzl uniform electric field. What 0 n1z*/vk.wszxo 8holis the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasafdw5;kf1 r h :ohudx7. :za*y 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 elenre4* u./t khakq*ekh11 d9xmctric field of 6000 N/C pointing downward. What charge must be placed on the ball for1unqk.kdhxe *4mat9k1 * re/ h it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The o6r33e-pe3uj anylbko 34o2eball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the elereao43 nel23k3je3b pu6oo -yctric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What wc1et6j :rrq1 gm1)g:p k7b hcis the magnitude of the electric field 5.0 cm from the sphere's su17c jqg6whp1)tekrg1m: c :r brface?

  A metal sphere of radius 2.0 cm car, tv8)r8gxnc p+6gf xlries a charge of 3.0 mC. What is the electrit8),gl6gxr nx+ v8c fpc field 6.0 cm from the center of the sphere?