State the law of conservation of electric chw(ow k+e;g bs2arge.

  Is it possible for two negative charges to attract each othmue5x-2 h5ncw er?

  Is it possible for a positive and a negative charge to attract each otheri67d0 ;gk:1ie6x cxu:pkobl b?

  A glass rod is rubbed with a piece of si65g o 5l si8 sua)b.h2glcl:iglk. During the process the glass rod acquires a positive charge and the su l 2bali gl5.6soh8gig)sc 5:ilk

  A proton carries a

  The model of the atom show-wofwvv8;b0h mw2k5ok ;8(tq fgxd x+s a

  A neutral atom always hasb233 7x(7oc*by ahmeyqpzk5;f 2roar

  An atom has more electrons than protof m5 e7; *rtrjg,9sye354ufb5tf vy jins. The atom is

  Materials in which the eihv ,u3 f))err lttyk4/gvo55p 3azg/pp f51 ylectrons are bound very tightly to the nuclei are referr3 urgp45y))av1zt3y,plof5h/ k5ig pvf t/ered to as

  Materials in which the electryts: l+k4kwh ; :zm5rfons are bound very loosely to the nuclei and can move about freeswm; : +ltyfk4 5h:zkrly within the material are referred to as

  A negatively charged rod is brought near one end of a6al92d m 0shehn uncharged metal bar. The end of the metal bar farthest from the charged rod will be 09d62hha emsl charged

  Sphere A carries a net positive charge, and sphere B is neutral. ,: 1cfrn z o6l)wmhipsexo 23;They are placed near each other on an insulated table. Sphp;:,osiz hf 1r 2nco)3elwx6mere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char9/wom wjq j w(5.j8ly;nj p8kfge an electroscope positively?

  An originally neutral electroscop d3-rn+xcq/oap vi 4ys+lel (2e is briefly touched with a positively charged glass iesl3x/vn +da2pl-q+ co (r4yrod. The electroscope

  An originally neutral electroscopecbfd4:y)n;3hcdd;o y9h n ;he is grounded briefly while a positively charged glass rod is held nearn3y en;;c)9df 4dhd ;hybhco: it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave pl;/,yxs(9yki o/shxs separate. Then a negativeh(,oy;sxi 9s /k yx/lp object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutyz2bofs/ y3xz3vg 43euk;o 4vral metallic ball rolls straight b4z fv2k 3/3x3o zyyv ;geso4utoward 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 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 co+5lxz;qax1kqf zm/9 g nstant $k$, which appears in Coulomb's law?

  Two charged objects are oej+n*xp* t/tseparated by a distance d. The first charge is larger in magnitude than the second xj t*t+/e p*nocharge.

  Sphere A carries a net charge and (zuuts+2f89b8bbme vdko z79sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the eluv8z t8om7z2(b 9beuf skdb+9ectrostatic force between them?

  Two charged objects attract each other with a certain force. If the charuf (xya..f qb,ges on both objects are doubled with no change in separation, the force between ..xauby,qf (f them

  Two charges are separa; xd ;vda wliw7-mky0)+nte6u ted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by awk0 )mddxn6atyil ;vw7eu+-; distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thegd / .*m2pgkx kczlcb( 4g)(we force between them if one charge is doubled, the other charge is c*m /kxl2ce.g4(p gz gd )b(wktripled, 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 b.wvm(/eevk0get*to j m4 t67qy a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed/wt7vm40 eqe .6*g jmtkv et(o next to the first electron?

  An electron and a proton are separated by a distance of izg 0/v uj)o8q1.0 m. What happens to the magnitude of the force on the first electron if a second el)iou/ 0vqzjg8 ectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 3w)rpp bztti 0dt*);bthe size of the force on the proton if the electron is moved 0.50 m closer tor0 b;id)tpw)ptb* 3zt the proton?

  A point charge of +Q is placed at the center of a square. When a second point c( jmq1a(vwv bp91p:ew. adgx0harge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N acts on th 0pwq(vpw 1a(edxbmj:a v9 1g.e 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 j;y jdsw e,()bvpwm(6 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 ceewpw ;,j(()sm bvy dj6nter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not ;arae/ j5 pdhsadr:uco /4c62a vector?

  At twice the distance from a point charge, the strength of the electri ,753c5qxl40ve,ylu1eva ru+qjww u m c field

  Is it possible to have a zero el,cag6(: 5yyng6 kgj cgectric field value between a negative and positive charge along g:(5j,na6gcy6y cgk g the line joining the two charges?

  Is it possible to have a zero electric field value betwh*l mr.a.qsy n.sj ,9 mw.5hzheen two positive charges alo,as .lq. 5m jnrhy.*zh 9ws.hmng the line joining the two charges?

  Electric field lines near psitive point charge cz6ljpl0(f(zwzzqw(0 m j0m2 s

  The electric field shown dufb ,,fbq1wosdn w5 7+lp75 f5z3nhe

  Can electric field lines interse v+ceq -mcdae,(23 dy 9ui- )lamz,ppbct in free space?

  A solid block of metal in electrostatic equilibrium is plo b/6yt a6pe6:wilej6i)jr 5naced in a uniform electric field. Givjiieo56np6l6r:/ 6)be tay wje a statement concerning the electric field in the block's interior.

  If a solid metal spha g 3u65p x74gwgn-nd.r:hxycere and a hollow metal sphere of equal diameters are each given tg- u5gwx3dn6a:xg7p. 4cy hrn he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a s,c odw d*p 51jr4tm 5zu6wz1oregion where a uniform electric field is directed straight upward. What can be said concerning td1tpows4zj cd,u1*om rw 56z5he charge on the block's top surface?

  If a conductor is in electrost,js*c *b1ny r9 dcjrn/atic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tha v)zo9+fjs q.prr/j5ot is grounded. As comparo/r rjso.zq +jfv95p) ed to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stap d.jsj-k4) dqia wo/)2xcv2ftic equilibrium.

State Gauss's law.

  The charge carried by one elev;s z-e *7-axb gndchklaa5r8d27u7zuy39 c zctron 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 mi,hw* fq dyd, ej6f32bn;a as1any more protons than eleca;3 qyfi6jde a *dfsnbw,,2 1htrons does this piece of plastic have?

  What is the charge on 1 kg of pr0og+zx e6zh1r otons?

  An atomic nucleus has a charge z+gwk4 h7x) jqof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated byp qvb-/kgy2v) 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude-g) v bkyvpq/2 of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tl2r 1 jh.a*8uh 5qxlyefx.m0chem is 1.0 N. .q lxx0u l hfe52a1yr8j. *mhc What is the magnitude of the second charge?

  Two 1.0-C charges have a force between thwxaecz 1v2j54em of 1.0 N. How far apart are they?

  The force between a ,pgjqs.7/x yd$30 \; mC$ 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 forcyltp908sjulj+ n 0 lk(e. If they are moved to a new separation of 8.0 cm, what is the electric force betwe8jtly j(lkn+009u pl sen them?

  Three identical poin 0f:wier)+)hiz i9e yot charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to th + irowi):e9z0ih)yefe 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 at/jrhrw .x5 k 7qt hsj12s,su5x 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 txs1j5jx,qur/ hr5hw .ks2s7direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at t.ge ilp658fgl he 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 the magnitude of the force on the 3.00-mC chaeilfp 65. ggl8rge?

  A point charge of +Q is placed at the cen3ywysd:bo(x; q 8 nmy -bj.w,lter 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 center. What is the magnitude of the force that acts on the center charge if a third c;oy-nqw bsbdy y.m :j,w3x(l8harge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 tq oke5tk,5a5m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whakao,q 5tk5 t5et is the magnitude 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 (+ x1j( mlt+p8swh vp)denw66 y0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charp ymww+lxvd6e1h6t8+snp(j ) ge?

  Three identical charges of 3.0 mC are placed at the vertices of ani ipio; ch/60u 6le-(-*mdh bjqwbq y+ equilateral triangle which measures 30 cm iy+il0db wcep 6j h- ;b/ui-mqh6*oq(on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q7dz6-pae uz- z and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chzze6 -u-zpa7d arge 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 4x96utbm w.pyun 38ycis at x = 4.0 m. Where on the x-axxw6my3uybt. 9cpn84uis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed3 uq3l81srqit at the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on 33sit8ruq1 ql it is zero?

  A copper penny has a mass of 3 a6l5 nww8rrw8+i7vmr.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 attractti8-t egta+ 64fq/dh wion of a fixed pro ag+teth /8t- qw46difton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point hko+jmcf50 1 uby nonconducting threads which are 30 cm long. Both are given identical charges1o0 kh ufcmj5+, 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 of +40e. What is the magnitude of the electrico0 *i0- bn :p1fslkpin field at a distance of 1.0 m fromppb isf:ioln0n k0-1 * the nucleus?

  What are the magnitude and directi d2*dzeyuc26c v11g+k3nm. s4qk mpuion of the electric field at a distance of 1.50 m from a z1*mdugk qcckds+ 1m3y.2i462 nevup 50.0-nC charge?

  A 5.0-C charge is 10 o1xbuh ,ntjg s:26:z hm from a small test charge. What is the magnitude of the electric field at the loca,u: 1tjohbh 6n 2xzs:gtion of the test charge?

  A 5.0-C charge is 10 m from a small test charg23e+mkf ( f.+iukhr5 6kfiu xye. What is the direction of the e m+xik 6fuhre 3.+kif2f k(5yulectric field?

  A 5.0-C charge is 10 m from a small test chldm gxv,y:r 1 umn;1dbm/sq*rca 7y)6arge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio,n u7)lx d yc:yvd*6mm11sbgm rraq /;n of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanet 6bf.u 7./4e+zpncd7d rwo bce of 4.0 m. What is the electric field+bb .wz 7f6rtn .p4dod/c ue7e at a point midway between the two charges?

  A 5.0-mC charge is placed wrjh gc.u:ijz6 li;d2 lzqs6, )o9w4 yat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What i;)6l26wcs9i hluj ,jdzi gor.q z:4wys the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 x-..v .wgcngq cm mark of a meter stick and a -4.0 mC charge is placed at the 50 w .ngxvq..-gc cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC an4t k0d*naubl 9)68nnn c s7jxd.-uu wsd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway btnd* 0bjd n u4 9kn7c.l n8a)uss-ux6wetween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The +*4y,zymul a2wc(f 0vwcuv.m jj n4u4last corner is occupied by a -3.0 mC charge. Find the electric field at the center ofa uy2m44myw,w u(v ncjcu+*v0zjl4 .f the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corn e1im1g 1n(zvters of the square ag 11(1vimztne s 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 mt 0w*,aaanx(n C when it is placed in a uniform electric field. What is thea(*xa,wta nn0 magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mzo ,5e -6mv2y6omll yg+rfn2p j.mo6vass 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 600e tr 5a+xvkxbt168/ ztng1r ) 6n*gaod0 N/C pointing downward. What cr 8dta*ogx)v rx 1z1n+t b5kt /an66egharge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plqxbfn; -c9vd 3 )t,)pos0i fgmaced inside a uniform electric field, and is suspended against the force of grao)qp)3f;xfi0csb9 tvd -mg n, vity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ov;ho .bc ;oj8kf +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacvc;hkobo8j ;.e?

  A metal sphere of radius 2.0 cm carries a charge3ae+eun3r/ ,5hmfja/i uy8h t of 3.0 mC. What is the electric field 6.0 cm from thehe tj8ahuy/+/u a3 ,53n fimre center of the sphere?