State the law of conservation ofk,o1. yh8jwrm/ q71 nappj 8cx electric charge.

  Is it possible for two negative charges to attract each otheu8d ptrk0m*na +l,ke; r?

  Is it possible for a positive and a negative charge to attr5 z:fo8om1j l 6kogzm3act each other?

  A glass rod is rubbed with a 1pj:sx,)j)u31rjm dphd cv(s7u *ujipiece of silk. During the process the glass rod acquires a positive charge and juph 13*msjp),) 7:dvx 1 sr jui(jcduthe silk

  A proton carries a

  The model of the atom shows 85yryhw9tr.d,wp jn9w02l lva

  A neutral atom alway +fccm6vl+0t qp0; sois has

  An atom has more electrons than protons. Thex8 ufnn(3myic.y0 9s7o dj70r2ba vdf atom is

  Materials in which the electrons arei8.s:)na wdcp bound very tightly to the nuclei are referreds8cd:n. )pia w to as

  Materials in which the electrons are bound9ixm,gz6pw8+h bmbeq b)k+ku-x 9 9cl very loosely to the nuclei and can move about freely within the materialxqi 8c9kl)mhembk-w uxg69+p,b+ z b9 are referred to as

  A negatively charged rod is brought near one end of an uzws2,v. 2vkftoze*v2 ncharged metal bar. The end of the metal bar farthest frte2s22*k fv z.vwzov ,om the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plap, e 0ssg9o ;vzx;+yiga6iu1n ced near eagg y+ 9 v s1;noui0siepx6;,zach other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged 4wk-el/cwmj0m ( 7mm jrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charee ev1ay0 szf;)yt;wmze :4 1nged glass rod. The electroscov)n1w0sema ez ef4;z;yy et:1pe

  An originally neutral el3-w:vbg t2 jysectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrojsyv2g:3w-bt scope

  A positive object touchesgrg j*s a*gw:s-/ey6h v /uks0 a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touyvh*0 a6kj gseu*-rss:gw//gch it. What happens to the leaves?

  A large negatively charged object is plac:o14tgf n8at jed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it tj1:ant 4 8tfogouches 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 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 constavkueij-r:cav88*w xjj g p 94+nt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargqn8rjd)a9ss s- ro a2:e +a1eke is larger in ma 2-+rd1sas8aj)qs k 9eenroa :gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placee1 we ou3a/6opphy3w /d near each other on an insulated table. Which statement best describes the electrostatic force be/6oahw/ 3wuep 3pe1oytween them?

  Two charged objects attwawl uq/b46*brn i6qh4s lp* (ract each other with a certain force. If the charges on both objects are doubled with no change in separation, the forcn q 6bpl6b/ wu4r i**al4w(sqhe between them

  Two charges are separated by a dist6rpabo(c ptcf ve;/m 6q.y)g9 ance d and exert mutual attractive forces of F on each other. If the charges are separate/form(ppa cb9eq)6c;6t vgy.d by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other oas+ble o4q6b;8 oze-oy0,kk with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separa;okaoloye ,+z0ok -6 bqbs4e8tion 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 distanubw vxr(nvd0;j ;9p.ece of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electronx9v erj;(0pd; nuw.bv?

  An electron and a proton areraryghj-p( k hls0s+a8 ,y3z : separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the say :(hlgkypshj a+-r 8z3r,0proton?

  An electron and a proton are separated by a distah fn7a(/n3nh a33f grqpw f.b1;e 2fnnnce of 1.0 m. What happens to the size of the force on the proton if thqb g;f.e7frhnnpn1 2n3n 3afahw( /f3 e electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square . f7l)hqusvv1/-72ctdoyh qa. 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./hlof 1qhvtvqus .-a) 7cy2d70 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 centroid of an equilateral triangle. Wheo+d4 rv6eqw-w /aoz ,1qo(kj vn 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 +/ ev 6qz-rwokq1d,ow( 4oajv 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 vectkh -5ezm11j 3md i z2,w+0ejusko)bfior?

  At twice the distance from a point charge, tdihsx4ueo v 5d+8hx *.k 0wtsf,6g;axhe strength of the electric field

  Is it possible to have a zero y y+b5s(t5w+/qwbx sl6sm 8tnji65vs electric field value between a negative and positive charge along the line joining the two chasmtnyww+ sqlv 86(5jbx s t5+isy/5b6rges?

  Is it possible to have a zero electric field value between two pos92dq-rqw uh 93m xia1mitive charges along the line joining the two chw9-q 1h2di uxq39rmma arges?

  Electric field lines neag,9 w *wsrm-;o,r) tnwbqtq5 dr psitive point charges

  The electric field shun9ldo ml 0,:k,unp t.x5x1n yown

  Can electric field lines interseci d(vz25+k,x)cdtyw i t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a u0knfoz 9dtq(*2 pgc5cniform electric tz2*k 59cf0nq op(dgcfield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diaw4d: * *nqi8tqnnra+r meters are each given the same charge, the electric field (E) midway between:qwird8nq*t *nn +4 ra the center and the surface is

  A cubic block of aluminum rests on a wooden table in a r( 0el buj+hk,vegion where a uniform electric field is directed straight upward. What can be sai+,h ubljv0e( kd concerning the charge on the block's top surface?

  If a conductor is in elehz o ,((9 evd( ntlp7wod-4vi 6usqcx1ctrostatic equilibrium near an electric charge

  A positive point char.1ij:biw-hzk 1/qh mc ge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hol1.jik-mcb:1wzhqih/ low sphere has

State three properties of conductors in static equilibrium.4 zwat/7x nc(k9e*j uj

State Gauss's law.

  The charge carried by ok qbth99l c:w-ne 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 net charge of +2.00 mC. How manyyiq2pbm d a81aykjq,;o0.1mu more protons than electrons does this d jmq1ayu.m yk8o12piqa,b ; 0piece of plastic have?

  What is the charge on 1 kg(/um:/mouvi7(-unqp2wgo d l of protons?

  An atomic nucleus has a1u: arg. ,f3sb-kw psa charge 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 values :tz, :ci.mvz yd7c*4y9ot bv ngh;i)wa7r; gv of 2.0 and -4.0 mC, respectively. ry c 7:thziv)btc oz,iyd 9w4:g n7 a.;mgv*;vWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th :u: opk(9+vw:d;zjdjch8) pg6aef ai em is 1.0 N. What is the magnitude o:)(j6v8:jia: hed9k fo wa c+zp;ugpdf the second charge?

  Two 1.0-C charges have a f69av;tr5clk:p* q s+p l:nod force between them of 1.0 N. How far apart are they?

  The force between a 4)qfb rw;2t hh$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 8nf5oe;ou d5 z r+fo6zexperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betw5e;fdn 8uz oo 6+zor5feen them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Tc2 1*bogp/k-a30xkmu yh4h df he first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mkh2k/dy*pc0m4g -xu3of1 habark. 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 plac qg ce)9vq.0pfvpij36 ed 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 magnitudc3 .e)6iqv vp9gf0pjqe and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posithl it04doeu9. grr4/ sions: 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 magnitud i4.09esoh4tlg /rr ude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the kk mdj4it (9 ,.wriu*ycenter 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 charge at the ,r* ik9wu.mjydt(ik4 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)m(jsyl5cl 35p; Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 p 53syc(j5m llnC charge?

  Q1 = 6.0 nC is at (0.30 m, 4phn6z z:/chm0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directimz6/ z :hchp4non of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticecyh3++.fsia1c9 t.y) rxdq eqi5b+ xvs of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whir tx+1i5ecq)3hcy.ayid+x9qb .s fv+ ch acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatrmoh *ymhvg6*b .7 g.fed by 3.0 m. At what point, on a line between the two charges, would it be possible to place o.yb7f6 *rvmgmg *.hha charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oibx/vd 14zpgl o7tk,/rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third dt /vpoi,41xkb/zl g 7charge 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. g k)nba r)e a)w4s11yrd+crb 9 Where can a third positive charge +q be placed so that the force o)+ ad)arncs9kr rb1 wy1g)b 4en it is zero?

  A copper penny has a mass of 3.0 g. A total yzl. r3w8(ug iof $4.0 \times 10^{12} \; electrons$ 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 attracwooy/il4os 3,k bky5: tion of a fixed proton some distance above it. How fa/4oy5:swiok3ol y,k br above the electron is the proton?

  Two 0.20-g metal spheres are hyy1 0r3cgz5s hung from a common point by nonconducting threads which are 30 cm long. Both are gis ygrc h1y0z35ven 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 has a charge -lhly zg(f s 9nx6g2gksaq7:: of +40e. What is the magnitude of the electric field at a distance of 1.0 m from zys6: fl97qag:g xngk sh(2- lthe nucleus?

  What are the magnitude an8cpnmeg3f b;;o1 cq- nd direction of the electric field at a distance of 1.50 mfc n1eb; 8q-o gmpnc;3 from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mag4k+ o xa/amn3pnitude of the electric field at th+kmxpaona 43/e location of the test charge?

  A 5.0-C charge is 10 m from a smiiia -e5nw1o33xsrt6all test charge. What is the direction of the electric fieldiiitna3 5-r1 s wxe3o6?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o hi*(8omu)ve2a6 ow tuf the force experienced by a 1.0 nC charge placed at the location of the test charg* e)hiou6w t2mova8 u(e?

  Two point charges each have a value of 3.0 C and a0q; f 4ln73h8phkxgk are separated by a distance of 4.0 m. What is the electric field at a poinf;hkln 7hgx0q48pa 3kt midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mpg 1z/g:jb4 zsark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Wha/js4g1z bzpg: t 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 eudf a-3;)m5eg ,wcfjand a -4.0 mC charge is placed at ta ; um,ewj5fc -3fdge)he 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 -7.0 mC are placed at x = 0 and x = 0.20 md/ c:xdvyypky 9iguu /h: c(ebw3;46m. What/m: eu 4w:(kccgdiu;hbdyv /9p3 yy 6x is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square w w5fkzcc..a0ul5q3j of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricc.5fk5luaz 0 wc qj3.w field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne82 +abp vnbu.c 5rr9u40b fxmzrs 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 t80 5.+rr2cbbn 4a mzvbupxuf9he 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 plqv ryy0a)4u*qaced in a uniform electric field. What is the magnitude of this electriuvyy0 q*4qa)rc field?

  A particle with a charge of 4.0 mC h:0jb .c5 ;gwejtr2ogbce j; *bas 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 ingg-+ trbnul+5g m 4j7vrcg9n6 an electric field of 6000 N/C pointing downward. What charge must be placed r- 9u5m g67g+jtgnnrv 4bg+lc on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge z0ttthg0i5 ho)ay fd : 7yc3uy,2m k,mof -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electri:hcfy oy i 0d )t7hty,gu03tk2mz5a,mc field?

  A metal sphere of radius 10 cm carries a char*.:prmj9edjw v-/.rd n 8l xvrge of +2.0 mC. What is the magnitunvrr *8.dxrm /j9 :.- pledvwjde of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mz7e 4;*z)uv kuntk, o mcq2kk0qf :ff0C. What is the electric field 6.0 cm from the center of the spn k kc;0 qfkt,mzou*ezu 4v:)f fq0k72here?