State the law of conservationq xalxq4p 4qj8 41cd 3wzzydy1/6 fq3z of electric charge.

  Is it possible for two negative charges to attr 3xi9jfu*yrv *act each other?

  Is it possible for a positive and a negative charge to attract e p uh zr,qmh( wl.1ms2ign:a;9ach other?

  A glass rod is rubbed with a piece of silk. During the process the glao 6+o::yt*z/h(ar1cudi r iunss rod acquires a pou :dyo: h+/n*oi1u6( i rzacrtsitive charge and the silk

  A proton carries a

  The model of the atom shows wdv ec(si0sve1 :hdnf; 5hu 83a

  A neutral atom always hll :g,0tkg c3sas

  An atom has more electrons than protons. The atom z.kot9bpbidyk:s2lc 9 s q 8s5h,12kl is

  Materials in which the electrons aretppwq4d7zetts- ;/ qou 1od12 bound very tightly to the nuclei are referred t ud;o-24spq1q/t opzetw17dto as

  Materials in which the electronsemhpof2a8k 9y*r(-)wq bh (ec are bound very loosely to the nuclei and can move about freely withinc( -ary phw)ebef(9h2qo8 m*k the material are referred to as

  A negatively charged rod is b1;q0 zibk5h(n;pe kaj4 vk i9orought near one end of an uncharged metal bar. The end of the metal bar farthest from the chargekbp(iv 0n4ajk5 9 ;;ek1zhiqo d rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ao 03i -kambz)zt h-fy4r0apg;re placed near each other on an insulated table. Spt0a ia zzh4my0 - bo-;pfg)k3rhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch) ei* d 1ixhc3vd06giearged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched wxzo ,mj1qcc(w - 2hp7bith a positively charged glass rod. Tmzc-j 1,2 (bocwqp7hxhe electroscope

  An originally neutra -8lm3xzh n zryx/nni/+q// lcl electroscope is grounded briefly while a positively charged gl+ z/ lqi/my/xnrlhn8nc/-zx3 ass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrojw6y6h6 zbym 6scope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touchmw66b6zyy6 jh it. What happens to the leaves?

  A large negatively charged object is pla4 7;rz r)ul;rdg(bo+ k jmfa3hced on an insulated table. A neutral metall;o jk;r4 hz (mdbl ru7)gfr+a3ic 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 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 ther2gv dnhlu,4w24lw r:l6f-i g Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. o*bx32)os cho The first charge is larger in magnitude than 2*hos3o c )oxbthe second charge.

  Sphere A carries a net charge and sphere B is neutral. They aresk0 3 uyni-xz0 placed near each other on an insulated table. Which statement best describes 3yx -0z0iuksn the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charge-xn9,:j ej,a gbvwd o9mym/sn(v9 f-ds on both objects are doubled with no change in sx: d/9vmb-mds -(ae,jof9w ng , 9vjyneparation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcesk86dkc*sp8 k2 re bvu;38sngo of F on each other. If the charges are separated by a distance of d/3, what are the ek 8o su86v 8*3dk2g;rkbsnc pnew mutual forces?

  Two charged objects attract each other with a force F. tenvewl9, +oq 2z;+wqoaz -fz5 3 9jiqWhat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betweo z 5vlq ;qe9+fe3q2, +wwiaojtz -9znen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separkt7mqzz 6-lk c:2n+cs ated by a distance of 1.0 m. What happens to the magnitude of the fo7kc:sn z lm2z+tck 6-qrce 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 8 jfpu o3,,hnw b3pbz/1.0 m. What happens to the magnitude of the force on the first electron if a second ele/ 3,zb w8ubnp,oph3fjctron is placed next to the proton?

  An electron and a proto n-k:kawd,0.j2 l;z4 i si:6qfkshnuon are separated by a distance of 1.0 m. What happens to the size of the force on the proton if -4iu 6s:sd;fn ah :q ikolw2n k0z.k,jthe electron is moved 0.50 m closer to the proton?

  A point charge of +Qint)f d cas3o e)y8(v:spum(, is placed at the center of 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 fort:(os) nfp8ed, i c( savu)my3ce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the c,6yc pn hexs(2b0me 5gentroid 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 hm, 6g (cns5y0xb ep2eone of the other vertices?

  Which of the following is*spk90 / xzakbddq*7 ak+kc. z not a vector?

  At twice the distance from a point charge, the strength of the elb3c2ma ;h kj3/jjkrggi-* 6 d7:tzhy4 8q vdxqectric field

  Is it possible to have a zero electric field value between a negative and pos3+v,opl g zxrn4i)hyf( f8-hnitive charge along the line joining the two c8vx flh+n(on),h3z-p4i gr f yharges?

  Is it possible to have a zero electric field value between two pomv;.0c5c /+t 2md9q pc gcskcwsitive charges along the line joining the two chargesdc vqg;90 m .kccwm 5sc2c/t+p?

  Electric field linesfvuhb.0sn13 j9p jq4u near psitive point charges

  The electric field shos0qw;smfy *)qyoz v*8 wn

  Can electric field lines intersect ijjfvo2 mn:8 +on free space?

  A solid block of metal in electrostatic wg95o1b3cwe -goyh:+3mjv zy: z vw,oksy8z) equilibrium is placed in a uniform electrm o8by gw ohgyz5wy3::9sv)e,vkz j-+cwz 3 o1ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet+y2 lpm :6,-sogr*yp jr7ap ywers are each given the same charge, the electric field (E) midway betwe y+mro7g,*:yprayj6s- pl2pwen the center and the surface is

  A cubic block of aluminum rests on a w 4:aqo9ir 9pnrwsb+ t5muq8y.ooden table in a region where a uniform electric field is directed strwnub: sqaompy 9t 9+4qr.8i5raight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electr4pzq( d npk(h:up*: ueostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollw8ln p.shw)t/ow metallic sphere that is grounded. As compared to the case withotw)8 ln.h/pswut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors i/2elw:we0 - ow*er uhfn static equilibrium.

State Gauss's law.

  The charge carried by 0wv(hr;i piak+w-;x x one 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. y-os3rag a3-l How many more protons than electrons does this pyosg-a-ar3 3 liece of plastic have?

  What is the charge on 1 jx;f04 k +ww8ldfuv 2skg of protons?

  An atomic nucleus ha m9aa ja m;xvd)5ls0+af6swh/s a 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 cmi zowy3n5(tv(2jq kz 7, have charge values of 2.0 and -4.0 mC, respectively. What is the magnnt5 q(k izoj(72v3yw zitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 *rya d lp73rrsuy1- yl2(j8a cN. Wl3ydy-ylurrc78(a2r *1 p jsahat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart aw7 efz9h c64jy3bb 1kqre they?

  The force between a bf+vd sn ;h+7s3:luu5 dqeck1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a0b 8bva6 fz)iurqmb-8-r+b w kpart, experience a 1.0-N force. If they are moved to a new separation of 8. af)uv+0qbir w88-6b-rzbmbk0 cm, what is the electric force between them?

  Three identical point charges of 2t0fl xx9fui0 5.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at thlx 5ix u0tf9f0e 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 mCrkczsp1w9xu c8qkl;* x2. /fc 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 xsk821cuz9 wxcp kcfr.*ql /;acts on the charge at the origin?

  Three point charges are located at the follo(hmv j8thxcvb-c6cqiu8( 4 / nm g:+nywing 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 magnitudeb4((v :- tch/ qicn8m nv6gxh8y+ujmc 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 pointd*jx9qln 3y sp-5qx-s 7n z// d .c0toeh6uymo 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 thtoz6 95*xh nq-/us jq-yxsdpdol0e /nym.3c7 ird 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); Q3 = 5)wiz/3n ic t7c f/oo9b.0 nC is at (0, 0). What is the magnitude of the neion7z3 tc9cbi/ f/ o)wt force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2z* x2l rbjkw+1 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the+kr2b1w lj*zx direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 m ud rod087fw4l8+gh cjC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the cwd f08dl +uhg7jr8o 4charges?

  Consider point charges of +Q and +4Qsna9 d+scq 43v, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it wouldd3+v csnq9 4sa be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = ;w3)bmqik q qe)s,d0 8cr2fcz 4.0 m. Where on the x-axcre q0)i zmfqs, ;qck dbw)382is can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pj .3zveo7uh 0a;ljb::(dfai :vbs 3mflaced at x = 2a. Where can a third positive charge +q be placed so that the force on iib3hvl a0(;j asv :mu djo3ef:b:.7zft is zero?

  A copper penny has a mass of 3.0 g. A t;l6( tc* bpvivotal 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 gravi) d3)y53 psd41roy0mqp5lzw ,k bjimpty by the attraction of a fixed proton sm bdjlp5dp q 05 ozy3)4w3,rkp1m) syiome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduoj9(ih hgcij(xxr6dxxzr q781w4k . 9cting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads zgx.j1 o jhx7xr4hdi9c(q9 (k68 wrxi is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the,f.zhn nv1mxd-)y- qf +bks5o magnitude of the electric field at a distancez ,m5.f nxhdb-s1ny+-)fokv q of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric 4c kt6bigyqeg s);i ,3i/g- ibfield at a distance of 1.50 m from a 50.0-nC chargeg,iygi )ke4 t- ;gq6bbii 3/cs?

  A 5.0-C charge is 10 m from a small test charge. What is the mptmt, +5j21 e)mbuphyagnitude of the electric field at the location of theephpj)t+u 51ymm 2 b,t test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directv gu1esme+ -l4ion of the electric fiel +mugl1es-ve4d?

  A 5.0-C charge is 10 m from a small test charge.vu)5/hj 0rnbwk-;wtk i.lll 1 What is the magnitude of the force experienced by).-nuv1k wllritwl 0h b;/5jk a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and arej6yujuhr)1s ; g15me33p7t/zhenyji separated by a distance of 4.0 m. What is the electric field at a point ei) yj3;7 pyuh tm5s/u1n1 j6eh g3rjzmidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char .wvggukt314j fj;.vfge is placed at the 50 cm mark. What is the electric field at the 30 cm m..4tvfvjgj 3;ug 1wf kark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0fdtzrc-3/+hfeeln 2)g 6. pm s mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electrih6 egn23tf/lsz -p +)d fremc.c field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. Whx13w6 jwa:ge x b3hw.mat is the magnitude of the electric field at the point 6.hbm ew 3xwja1x:3gw midway between them?

  Three 3.0 mC charges are at the thrcf*bgx lza82hf ;94jmee corners of a square of side 0.50 m. The last g* zac9b;fjm f2h8 4lxcorner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which i eq:az7wnwfp2)t 3m,vjl:s3vwmt,q 5 s 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). What is the magnitude ofe zwwfs) :: a2 t5m,np7vqljv, w3t3mq the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plac.h0 )3 ans/clc kd- (vfbpfad0ed in a uniform electric field. What is theva/f k.0 (-pf la dshbdcc0n3) magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mas3 -1 fesygcr;bs 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 0/l+ ph)tm81 mzvfmgeelectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it mlv8pfhm/gtz1+)m e 0 to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.m. y4ma,fk*ld7m xkmu**)vjtz mfhr5io 8x6700 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. W7*hy ,8i7)xmmarfkvol4mzjdm.6 f*k5t x*m u hat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magn tfc)hcw)z 80ac:nlk2itude of the electric field 5.0 cm frnc al)zh0c8t:wck) 2 fom the sphere's surface?

  A metal sphere of radius 2.0k;e(.kah rc h:wn- 0he cm carries a charge of 3.0 mC. What is the electric fc kheh rn-(ah:0 kwe.;ield 6.0 cm from the center of the sphere?