State the law of conservation of electric r ,o,q)f v:mhzudwk-/charge.

  Is it possible for two negativepw )u rcif0wp)y,q cmva55t+53jzupes ro6*7 charges to attract each other?

  Is it possible for a positive and a negative charge to attract ea,8i w-3ts rp,0pmqvw dch other?

  A glass rod is rubbed with a piece of silk. During the pro *611ls gsi :,jpjphencess the glass rod acquires a positive cha1p1l:gisph6 jsn,e* jrge and the silk

  A proton carries a

  The model of the atowzop08cfey p;r;inkg -8x45n m shows a

  A neutral atom always(ukohmhgmo*u h9n00plb x p. -55yp (s has

  An atom has more electrons than protons. The atom is i e0 o9;/quo(os/penn 7r2pm la(*lvi

  Materials in which the electrons are bounbpx-8vz sar 9p 9f;:/l*tios pd very tightly to the nuclei are referred tla9s fr p;9sxt-zvppb/* i:8oo as

  Materials in which the electrons argoy+ yf -:aor5e bound very loosely to the nuclei and can move about freely within the material are referreoa g:r5-yyof+ d to as

  A negatively charged rtjqzpu 7)4angti; c d: h9uan7z26 k8rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chart z; u7ntz72 i 49rn8hgquk)dapja :c6ged

  Sphere A carries a net polqj5 de7-se0hsitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemde7j 5-0 heslqent is correct?

  How can a negatively charged rod charge an electroscope posid1:x * 8ncuqzw t7da(xtively?

  An originally neutral electroscope is brieflyhcz:ody z+5(fr p ;.xk touched with a positively charged + r (xo.z:p5c;kfzy dhglass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively charc3kte5ce g;e,tic;7um)m e8 gb 24 imzged glass rod is held near it. After8b;c5g3 zmtu27ekg,ie; ecitm4me c) the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Theafrpo(b+k g:78lw 3ugsjmo8qj ry,3 -n a negative object is brought near the electroscope, but does not touch it. What hapj8yo7:+urlr 8mk ba o 3s,-pgg(fqjw3 pens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral e -f yoax2af)vp.j1c0metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path followed by c2 afy.1fpe - axjov0)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 con f16rn3rbq0qb;4 ly3 in sn,tnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated bc cs 8yzgup)jdj.z.g+h .t7 f o:glr6)y a distance d. The first charge is larger in magnitjlz+ ru.gdgh) 8tjs. g.c6zyf7c)p :oude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plac bt zhgic+866*6ti wk/j7ad bzed near each other on an insulated table. Which statement best describes the electg*akb tz/7wiibd6h 66cj8 t+zrostatic force between them?

  Two charged objects attract each othx*q/yn xb4 v esw6qq-4er with a certain force. If the charges on both objects are doubled with no change in sex 4s 4qw6b xe/-yqvqn*paration, the force between them

  Two charges are separated by a distance d and exert mutual attractive s 6kocz do734uforces of F on each other. If the charges are separated by a distance ofc6dzkoo4u7 3 s d/3, what are the new mutual forces?

  Two charged objects attract each other wih1 icxpb9mlynxr5xr (05;qxzn 31e)oth a force F. What happens to the force between them if one charge is doubled, the other charge is tripled,hxlo 5n35 q(0c xri1x;y) rxpem9 b1zn 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 by a discb+ r)fnri.k-4z*swiazq3 b 0tance of 1.0 m. What happens to the magnitude of the force on the praw)*fri + -ckb.sr 40znbiz3qoton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What zi6akf+4n: l 3j;yu yqhappens to the magnitude of the force on the first electr+f:q jy zla4u niky36;on if a second electron is placed next to the proton?

  An electron and a proton aev+7 6ti-c2j :rgsiqxrd64 lfmh-o 4i re separated by a distance of 1.0 m. What happens to the size of the force on the protongxo4+idh-:rtq mfc2 sei4 irv-6j7 6l 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. When a seconp8tr zkj;1zp gql8*) md point charge of -Q is placed amktql1pz*;jz 8r 8 )pgt 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 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centro 2slke+29ojt *s9y dslid 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 sj2s2l*sl dkt9e9y+ o on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not8aftzqp; /,4 sarbhf f06g5zu a vector?

  At twice the distance from a point charge, the strengt4xmw6al ox4 7xh of the electric field

  Is it possible to have a qlq 1kfbn,6ivs- (zid15wovwb + :o5.le.asizero electric field value between a negative and positive charge along the li5a+w.id,boqk1wl1 nqobv fvl6s s-ei (.5 :iz ne joining the two charges?

  Is it possible to have a zero electric field value between two pos xn(2gc2fs6 x7v,wnkfitive charges along the line joining theg6skv,w(xx72f nncf2 two charges?

  Electric field lines g9 lzj7:zrb(mnear psitive point charges

  The electric field show pfa9lc.wyd ,m9*lsu0rc z;2sn

  Can electric field l,(dl li qyfmpc0 )9d.yines intersect in free space?

  A solid block of metal in electrostatic equiloj .7on nrr9n4ibrium is placed in a uniform electric field. Give a s97o4n n rjn.rotatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diame5wlgy- .sq is9ters are each given the same charge, the electric field (E) midway between the center and the surq yiws9s5 .g-lface is

  A cubic block of aluminum rests on a wooden tp*kha93y lh6)yi 3z7 nkd 2 1abp)mbjfable in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on thebkjp1 6a*lmzf793h ay 2bpyn i3 )dk)h block's top surface?

  If a conductor is in electrostatic equilibrium near u+n yb u63 /;9gvlhcyv8q)xpy an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groun*,:oj+ ozzcr4r7j ucx mt75lxded. As compared to the case without the hclm7 *,r 7ru+:5zj tjx oxc4ozollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stati g0/z cjb(iw8glo62xo c equilibrium.

State Gauss's law.

  The charge carried by)ba zxs-z/ 4bll5 w9rr 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. How mas-5 bjqe33chiny more protons than eleib3qs5 ec-3hjctrons does this piece of plastic have?

  What is the charge on 1 kg s hm9zdn2o2snan2nkp13 gr: j (7ac)gof protons?

  An atomic nucleus haj i3qtlbgc 0 )7i6okx/;ffl-os 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 cm, have charge values of cxhm;i9+-+9poj9du wz w q6e x2.0 and -4.0 mC, respectively. What is th u xi6mdqp- 9hx9e;w9+ ozcj+we magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweens 3u)ihxx.k8 l them is 1.0 N. What is the magniixk hlu3xs.8)tude of the second charge?

  Two 1.0-C charges have a for 4sucp2k(vl n/ce between them of 1.0 N. How far apart are they?

  The force between a mogxwcpt+87g6t 71 v h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aparvl z7 p q/798joe 6 tf8pr1b9cxwiayc7t, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenwt9j/7 e8 ciqrc78 fpx lp6yozv71ba9 them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firstq. 5.vbe *y6b(in0ls ptnph.a charge is at the origin, the second to the right ps.eptbv.a( y *65nn qbil.h0at 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 tf1y:(. a 80m9okb:ze kdwmsg fhe x-axis. A charge of +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. k9 .aw0s :(bmfm yodkzg81fe: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 following positionrli9 g w;,zfg :*70wauvor8wi s: 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 magnio rg7uiwg8f*z0a9l;wr :w ,vitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seconio l xv;lqfg*x* rv.-;d 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 x fgxvr;.-q;*lvil * opositive 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 mp(3; ssrw a.qb, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcebr swa;sq (3p. on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1 hj2 ji(/wms,u0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f,msu(2i w/jjh orce on the 5.0 nC charge?

  Three identical charges of 3.0 mC amp3(agokav nt 8q(2n.re placed at the vertices of an equilateral triangle which measures 30 cm on a side. Whn k na.8aqpmgt3o(2( vat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what powz7p ga +u/w7lxn nk5-int, on a line between the two charges, would it be possible to pukgz wn-l5p/7x a+w7 nlace a charge 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 is at x = 4.0 m. Whe82r/xkntbp4n. rtd qvwm,; 2szah )y 7re on the x-axis can a third charge be placed so the net fo)7 2x ntw/;tbhs.pm84nk,r y 2qzvr darce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 5,.h5/. myqqff c4rpoqdufp 7 Where can a third posith5fq,ff7 .m pu qc4.rpdq5/oyive charge +q be placed so that the force on it is zero?

  A copper penny has a :/ eo)4unah* 1a ky ksm0zw+ctmass of 3.0 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 tvn; /lyfbnp,h ;2 6asvhe attraction of a fixed proton some di;lsb h,ya 2pnn/; v6fvstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a conp2wu0gmzg4s* ; b+z ammon point by nonconducting threads which are 30 cm long. Both are given identp; u4 bszzn*20g+ wgamical 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 of +40e. What is the magnitude of the electrie ;3hr gx3lxrhz*-mo1 c field at a distance of 1.0 m fx1exhh*g3-;zlr r 3morom the nucleus?

  What are the magnitude and dio2- 5resml1i bl)x/w-m c2i-w kz1gp nrection of the electric field at a distance of 1.50 m frsmwk2r5z)xig c1wo1/--mpbn el2i-l om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smavk(m,a(gr imcr2 33zp ll test charge. What is the magnitude of the electric field at t(c ,pzma g23irk(r3vm he location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is sg wt5f4lu x a/shq(6tszolu;/-n3s8 the direction of the electric fiel ssfllstgn x4;- 3t/(ho6uswz/qau85 d?

  A 5.0-C charge is 10 m from a small test+zsl. 4idj3: +j3 ds3bllmnqd charge. What is the magnitude of the force experienced by a 1.0 n . dsn 3zmljliq4: 3s3+ddjbl+C charge placed at the location of the test charge?

  Two point charges each hav0 fw 3zw94o3gelynp m,e a value of 3.0 C and are separated by a distance of 439wmfn pwyg, zoe034 l.0 m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiqjr 8m6, csaj x.v-x.q l*jyu)ck and a -4.0 mC charge is placed at the 5ac xr-q 6u 8jy.vqjsx),*l.mj 0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ma7(kp-q6fsvu2a gykv61 j*(zry fep,rrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line uq 6ky r,(172vr kzfay-* (fe gsjvpp6joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = ny; 4 v-54kielvyhw i+0 and x = 0.20 m. What ;hwiyn5v+ky 4 ev-il4 is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of .h etpa+ u -eiq:3y4vha square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electripqy3ieat 4heu -h:+ .vc field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placede3 vrux/-sq9r 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); v suxq39/- rre -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 wheps;)c+v+y-z* zjmvn f n it is placed in a uniform electric field. What is the magnitude of this elecyp vv- ;+cz)+fs*nz mjtric field?

  A particle with a charge of 4.0 mC has gn 3uu6.lyu o3a 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 plac-+q3 l;qt:x xb3fqq jmed in an electric field of 6000 N/C pointing downward. Whj3qxt3l:; f-x +qbqqm at 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 nC. The ball,scb gw8 ky2q+:2ftki is placed inside a uniform electric field, and is suspended agq+tbck8 yfw2i: sk ,2gainst 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 mag xt:r v s8er cv9)8)jfp6ze/qdnitude of tvj/vf rrecz68):stq x9)8 pd ehe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.06oz+z0 b6wsld, ,xwb f cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cewsl,60z z6fxbd+ ,w bonter of the sphere?