State the law of conservation of electric qs7q8 y q/tky:charge.

  Is it possible for two negative charges to attract each6f z/ijuv/jf + other?

  Is it possible for a positive and a negatv3 enzgq-3 6- 3 ooruujh7t*jgu/z9qxive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procv21/4.w,zrp kzfbk0z)di fdt ess the glass rod acquires a positive charge and ti /)dt4 kd, 02rkzzvz .fwpb1fhe silk

  A proton carries a

  The model of the atom sbx3) .evtjz;gb8irv 0hows a

  A neutral atom always hasu3g 5p9v4fbp hx xm-4z

  An atom has more electrons thanxgn e,o72wfmmb f2l- k2 5ic7x protons. The atom is

  Materials in which th;x0nd, n7gqrg bs6a j,e electrons are bound very tightly to the nuclei are referred to;n drj6,0q,x agbs n7g as

  Materials in which the rzuis7m e eo g5o2g3mx :ni)/+sjfj8*electrons are bound very loosely to the nuclei and can move about freely within the material are*mm5 io r8fi+jes o:7 gj2/zex)nusg3 referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thhin df(4 rs+1ke end of the metal br1s inkf+4( dhar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neut i*p7ob g16tw/o pek8mral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. owti1g ok/7 8p*empb 6 Which statement is correct?

  How can a negatively charged rod charge an electroscope posiwhy jozffh *-*lg* -( .v-wgmjtively?

  An originally neutral electroscouaf(r ,t75lyzpe is briefly touched with a positively charged glass rod. Thftz(l uy7, ar5e electroscope

  An originally neutral electroscope is grounded briefly while a p-nc9ujfd vdy3 /zxl*;b1:rjfositively charged glass rod is held near it. After the glass rod is :j9xb1rujf;cf*/ ln vzdy 3d-removed, the electroscope

  A positive object toje jdzeo0 ;0q(s qr/4uuches a neutral electroscope, and the leaves separate. Then a negative object r0zj(0/e;d4sjuq qo eis brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insa(.o/ f1/gw7kzwt *n i nvcq(culated 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 object. At no time does either ball toucq/go(*(1avwcknic/t7w fz . nh the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantbigc/)-y npj8i4 a0nc 0xqjq+ $k$, which appears in Coulomb's law?

  Two charged objects are separatek-dg: lbi 4 vdz (ezk 1tlc)76lb7sqr7d by a distance d. The first charge is larger in magnitude th1rblv :zsbd gl7 qk)kiz(d6t4e7c-l 7 an the second charge.

  Sphere A carries a net34t 61/uggt9jik y*opkxpg 7e charge and sphere B is neutral. They are placed near each 6 7ggjxp9kuy k14t3/e*gi ptoother on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certaiidrd8 1.n v8kmv n(s1)dajcx 7ma6p,cn force. If the charges on both objects aresd6c8. dj1v81ak)pia 7cn, mv (nmxdr doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivano/-j2n3 *nie fv3e, zif (,hznor d)e forces of F on each other. If the charges n evz,,*one-z r3i)f/fn2a3j(in d hoare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to theg m(tz(g+0 l1tbz4 q(vgk;af+ :dkece force between them if onqbgaztdv (++gm(ft0:;kg l(14ecezke 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 pro l5.qwayrhfy7 lb 0;m*ton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to thehw7 lrfym qa*y50;.l b first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha3jj5p;;pqp7emnp tu55 )nik ft happens to the magnitude of the force on the first electron if a sec 3qnu)fnpkm j;i7p5j ;p5 pte5ond electron is placed next to the proton?

  An electron and a proton are separated by a distance of ) we orexj+go e35p+r)1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to3wxoe e5 epg+j ))or+r the proton?

  A point charge of +Q is placed at the center of a squ : rh avtplms(4qp43,tare. 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'spv:4mt ra q(43p hs,tl 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 equilatermzvpm4uxp(vus 7c. (ps:6uq 4al 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 centeruc7s(v(u.qps 4z:pu pmv6x m4 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vah*)7rfh ro(eector?

  At twice the distance from a point charge, the7 ive,iguj,)y strength of the electric field

  Is it possible to have a zero electric field value between a negative and )luh touu k424positive charge along the line joining the uuu4)4kol 2ht two charges?

  Is it possible to have a zero electric field value between two positive charge zerh5z 4lc x8dl8,px+s along the line joining th +ep rldxz8czl4 ,85xhe two charges?

  Electric field lines neaos 3wq(/) msjl0+xiufr psitive point charges

  The electric field s kfw8 blydhm5d;: n:y7hown

  Can electric field lines intersect in free spa /bcl4 0b uw.;p0ow7qemg qi0j-l;tvtce?

  A solid block of metalpq1ha q, -mjn* in electrostatic equilibrium is placed in a uniform electric field. 1anq* -, jpmhqGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and +y,j( zpk53a9ehmgp t a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway bety5g9zepm (k ta,+hp3j ween the center and the surface is

  A cubic block of aluminu6 tw:l6lo, fl,np nq:nm rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said lf twll,p,:6n6:qnnoconcerning the charge on the block's top surface?

  If a conductor is in electrostativ p6vq /a/;5vkeoffwhl +1hpe j io;0.c equilibrium near an electric charge

  A positive point chargbg f;(mf)rk - bf: -gq7*eqflz+s wkh;e is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electribg zr:heskq)*fmwff+q- l 7-(k;bfg ;c field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriu ll0gt9e)g1pw m.

State Gauss's law.

  The charge carried by one elect7nxoynbj4l0y4 7sbb;o, na+y ron 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 many more protons tmo ol9/, 9po5ooy,gqw han electrons does thiolp5m,yw/9 ,oooq9g os piece of plastic have?

  What is the charge om6dy qf71e7pyn 1 kg of protons?

  An atomic nucleus has a chargerwco91h)3q n m x9qgx/p8ilh 3 of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.y,:zg, 6nv( bfn :/ ((;pahzu y qhjy+ftqts+v5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweszfqp q(,huty6+: jngv ;/ +zy:nytbvfah (,(en them?

  A 1.0-C charge is 15 m from a second charge, and the force between +.ww0gd.(woah2pgsgthem is 1.0 N. What is the magnitude of t. gsd0whw2 owgp(.+gahe second charge?

  Two 1.0-C charges have a force between them of 1.floo4 l +ycs )*(*myye0 N. How far apart are they?

  The force between a hb1ve- j(prc ,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, 1 1fc08mtys4dho(fq rdo8sfq+i nhe f )*v7p ;experience a 1.0-N force. If they aremsqv8enh 1ct)fopro+qfd0;h4f y81 id7f( *s 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 p)bdtny*y7j41ff v9pz zz/a*ft l- 1dolaced 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 the 100 cm mark. What are the magnitude and direction of the electrostatic *j z7d -py19yt1nffo z/tvl )4ba*dfzforce which acts on the charge at the origin?

  Three point charges are placed on the x-axis. Ak0log5 j lzyz* ee 270vlq-1ui charge of +2.0 mC is placed at t5 z* 2uyzk-lg jlveo07il1e0qhe 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 charge at the origin?

  Three point charges are located at the follow*it 4crob s0m:ing positions: Q1 = 2.00 mC at x = 1.00 mb0t s*c ri:m4o; 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 charge?

  A point charge of +Q is placed at the center of a square, + 4+ca+z ggm3 )8yrmq *fmmbpband 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 fm *ybm+a4gp8br)g cq+mm 3z+harge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is 05g;zkc-jaz z at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 kz-z5ac;j0z gnC charge?

  Q1 = 6.0 nC is at (0.30ta6 wqvn)u 6 ;5ac u ldwjyxgy/ly*:1; m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force 5 xwty6l6cnay1v;gdaj * wu/)lu: yq; on the 5.0 nC charge?

  Three identical charges of 3.0 mC are p. dugqjdj f2o(p*:mt1ak(s chf(-/vu laced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magu gkd/q:-( o((u*jvs 1tfmd2aj.fph cnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which f/ ux*gq.ekfo jt+ sc7gl8+ms6h nk9(are separated by 3.0 m. At what point, on a line between thes jg(x9kk c*7+8mgnqsthff 6.l/e+ou two charges, would 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 an2q,ag3m;-g8n en ppvc d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirnm 8pgna3e2-;gq,c pvd 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-t g,3muj ei (*eoj jpbzr (e-u2(*trv. Where can a third positive charge +q be placed sot(eb *gj (z u u*(2j-mjo,e-rrt3 peiv that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totmka) my 2,r- vk*pcj/oal 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 a,( pyllat543)pnc1d ul0n8u h aapxo2ttraction of a fixed proton some distance above it. How far above the electron islunx ,ldc yo5tp a a)1up8ph(l042na3 the proton?

  Two 0.20-g metal spheres are hung from a common point by non j2*ua.7lo3+i ,f lv:qvklew bconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unt.lb+w* ila3klv: q7ejf,v ou2il 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 t6e96: o xwu.j w kacwjzfkmh ;cs9s,1/x4iy(electric field at a distance of 1.0 m fro/kxkc6w m ajwj:txhs9s6u,;y eo4 (c.9f iz1wm the nucleus?

  What are the magnitude and direction of the electric field4y3us,xh5yqcg- xd1h(a g+cp l.hs:i at a distance of 1.50 m frlgdx ,ac is4yp.1xhg s-yh c5:qh+3 (uom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smaln 7cj2o )6/zgp3kzb/: cilqps l test charge. What is the magnitude of the electric field at the location of the)6/zcg 3nslzjp b k7:q coip2/ test charge?

  A 5.0-C charge is 10 m fx6 ;hg5nw ( aa,oat0llrom a small test charge. What is the direction of the ela0aw tn ho,(lxla;5g 6ectric field?

  A 5.0-C charge is 10 m /s i5swn a:n/jq+c o*lfrom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placednlaqsj*i s 5cw//:+o n at the location of the test charge?

  Two point charges each have a 93d)2 rqfnr/x :io-p8yc+f4 ncmppdm value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two qdfinccp pfn29r)mm-3 xp r/:d 4o8y+charges?

  A 5.0-mC charge is placed at the 0xv )cohh9d51i cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at 5c)1 ohh dxiv9the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargidxgsr j4 7kwoc*v *2op7ps6q i:4c:se is placed at the 50 cm mark. At what point on a line joining * ig:2w p7j7ics* rod 4cvsk:p6qxos4the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mnmcbw;n mc9.2un9n4j C are placed at x = 0 and x = 0.20 m. What is the magnitude of the elw2n9; njm9 cbnnmcu.4 ectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners ofp b8 ,oe;,nio3k ,t8migi e(gc a square of side 0.50 m. The last corner is occu8gpik; 3,o ,egb8,eoc niitm(pied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne8unh tu (9bmh4rs of the square as follows: +4 mhbhu n(9u8t4.0 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 mC when it is placed in a unqaid,ip,b/ 0 8oc7ujgiform electric field. What is the magnitude of thiuj 8,q0,/ iapdg7 boics electric field?

  A particle with a charge of 4.0 mC has a masswkrn y,8y:m2gk. .mn,h 6ana h 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 ghzu lcl9f rf:9t :6yq96cp yi- is placed in an electric field of 6000 N/C pointinl9ctl c q6h99f:i 6uy-p:zyrfg downward. What charge 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 shxava29pk 7yd.ta -4nC. The ball is placed inside a uniform electric field, and is suspended agaipdx97asyht 4 va-ak.2nst the force of gravity. What 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 magni,1kjus7l5 eto tude of the electeos j ,l571kturic field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm cu4kg d8worz;nfu5om h9 o0r-8arries a charge of 3.0 mC. What is the electricgu;o8 nuk8rz-w9 omho 05rfd4 field 6.0 cm from the center of the sphere?