State the law of conservatb:o/ f9l.*q hct- putjk(d ;qtion of electric charge.

  Is it possible for two negative charges to attrabw*qyq+m yxgjsen.56zh1 b30/paxl+ct each other?

  Is it possible for a pos+q tur3pty65fk*a u. vitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the 4 zm l5:wt5b nz)slo7aglass rod acquires a positive charge z:s zla 5tmb54onlw7) and the silk

  A proton carries a

  The model of the atom sho(iib*bp u dr .7mdk7mqi c+t*7ws a

  A neutral atom alwaysc:2 o 8;fje1l/r3ymaeb mb;o4k s mtq* has

  An atom has more electrons than p;d ,rzn,ed o8irotons. The atom is

  Materials in which the electrons o,7p, 5aywzhu are bound very tightly to the nuclei are referred,, y7o5puhw az to as

  Materials in which the electrons are bound very loosely to the nuclei and can mtx-qp.rg9su*s3f/su li+ z icz5)x: v ove about freely within the material are req- us5 i/3+)u:t vszlirc s gpxzxf9*.ferred to as

  A negatively charged rod is brought near one end ts ybpwh)qjp75;e (0fof an uncharged metal bar. The end of the metal bar ff( jppt5) y0sweb;7qharthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plw4yq;u hzfa67aced nea q7;zauhf4w6y r each 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 rod charge an electroscope positiveb qu9gvm1i,sp4itd hz 8f 3r+nv:,s)mly?

  An originally neutral electroscope is briefly touched with a positively cha b4o2+wwdt6yhtk7* mghs l-v)rged glass rod. The electh+b*7gkl tdt) 6s4v wm-h y2woroscope

  An originally neutral ee 2 kewbz6y xr*ph76o;lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removeekh ;*ybz266r w7epxo d, the electroscope

  A positive object touches a neutrcl4 l)njnyc5fp8/az8al electroscope, and the leaves separate. Then a negative object is brought near the )f4l8npnzlj c5ayc/8 electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is place0pri)rgg76 i1.*g5 ,mtlccb5 9u ivwkwsr(ek d on an insulated table. A neutral metallic ba)c,9p kci *.km rvgggit(urr5iw70s w1b5le 6 ll 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 the Coulom kx-nxf7 kbo94cgbfk:n(i( +yb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance:mmomj,ija:9nkm yx / (s0 x -bnvu -vysz,s+; d. The first charge is larger in magnitude than the second chj, v,ns v -:yms i ;9amj-oum0mznsybk x+x:(/arge.

  Sphere A carries a net charge a;mp gh7adbv1(b:.bsl nd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic forcb mlv h(.ba:;gs pdb17e between them?

  Two charged objects attract each other with a certain force. If the charges o y) ,iqd9wmpmtbk3q ,uq8e,,un both objects are doubled with no change in separation, the force between th q ed),b,u3tyqwp,iu q,mmk8 9em

  Two charges are separated by a dzj893ar4 r ykeistance d and exert mutual attractive forces of F on each other. If the charges are separated by a diezaykj9438 rr stance of d/3, what are the new mutual forces?

  Two charged objects attract each lo3mjb2ojl rn :72 8ehother with a force F. What happens to the force between them if one charge in2b e7oljo8r 32h: lmjs 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 proton azx)- m33 d+v;qgv el7bd)q g-jgehlk6 re separated by a distance of 1.0 m. What happens to the magnitude of the for b+mh)xe-zq;v6-7 q gdg)3k3gv leld jce 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 vgs-3s/z ,efhg5fef *1.0 m. What happens to the magnitude of the force on tz ge*h3f v/ ges-ffs,5he first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happenh,v2jt dlt *9us to the size of the force on the proton if the electron 9jt*,d hvl u2tis moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the(z3us r fpnymjhmm8)9 05nv;k 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, ikhmz93 5 (j;rns yum)m0nfvp8 dentical 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 centr h(amd6/d6hlfihn;opj c u 4-)oid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4uhfl4()hdch66; idoa- mj/p n.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 one of the other vertices?

  Which of the following i j*l3g-8dbgdts not a vector?

  At twice the distance from a point charge, the strength of th ftg ctfp(v-yf7;2jlu. *voc /e electric field

  Is it possible to have a zero electric field value between a negative rof6 vw,dm-*lu6:t , qyppai)and positive charge aloqaw6i p rvu,,ydt -*o):6m pflng the line joining the two charges?

  Is it possible to have a zero electric field valu4,6a hmh m t,fwp*c,ffe between two positive charges alonfh chpa tm,m,4w f,*f6g the line joining the two charges?

  Electric field lines near psitive pointwp9,)n6 q(kxu8rkx oj. gw q8l charges

  The electric field s to/4a/,zwdsn n9op -vy.i: zxhown

  Can electric field lines intersev*z(+uf3re85dbn swr/5ip y 6ljx 3e mct in free space?

  A solid block of metal in electrostatic equilibrium cp06l ze7 pt6ezi)t.a, j pljeb1 e+u5is placed in a uniform electric field. Give a stape u5j 7c)+6je6tta z0,il pe1pez .bltement concerning the electric field in the block's interior.

  If a solid metal sphere and.cwgda j6*c+wrou1):g*k wckbrw k/ 6 a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center cb a 1.k 6)cg/gr 6w dw*wckor*u:j+kwand the surface is

  A cubic block of aluminum rests on a wooden table in a region whe .: 1;hzx.opqr6ljzuo m ;glr+re a uniform electric field is direct .zo oxurhm; p6;lz.:g1qjr l+ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrohqtg o-nl20y, static equilibrium near an electric charge

  A positive point charge is enclos8n f-qx h8s1n.rgaog 3bcsf f+7vbt./ed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a tfh x8nb+.3 .oq7rbf1gn a/fc v8gss- point directly above the hollow sphere has

State three properties of conduct.xi7 s)apepz *ors in static equilibrium.

State Gauss's law.

  The charge carried by od7m+.nz- no.9vlb0h (bb wry hne 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 many more protons tha do s,)*o:z kfksxic h,t+/gv/n electgo, vcizh:x+s,dto)k/ fsk*/ rons does this piece of plastic have?

  What is the charge on 1 kg of protmf2gye*a ut 26n1ag zon3b:x0 ons?

  An atomic nucleus has a ck-shisdcw 353v se(: uharge 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, hfwc-*4h0rk q ho.j3na ave charge values of 2.0 and -4.0 mC, respectively. What is the magnitud 0k3 h jocqnrf4.aw-*he of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, 9-lihz op, 4vcid5ckv4b- 6pp and the force between them is 1.0 N. What is the magnitude of the second c5bkp4cc4zil- , ivpd6vh- op9harge?

  Two 1.0-C charges have a force between them of 1.0 e g0icscu/2a .oz4*nked -cxef/t9s6N. How far apart are they?

  The force between a aibt9el*e4 14zb v ea6$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initih*7yd-2nbfcg0 f ic, mh 9owa.ally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the f ofnmh7w, *0h.-ab9ciyd2gc electric force between them?

  Three identical point charges of 2.0 mC are plabx i 9aeqzd6v2 r7:2j7fvr(pdced 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 directiorzqv(j6df7v 2ea:i 7 bp9x rd2n of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charg mxpi 1h,vbv wpp966j*mm .8lge 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. What are the magnitude and direction of the electromvv.lp6 mpm, jxg8p6hb1 9*wi static force which acts on the charge at the origin?

  Three point charges are located at the following positions:c 0ptgvkw .q6m8e6qa z3k4z(m 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 o wz3c68(ke gqk m ztav64p0m.qn the 3.00-mC charge?

  A point charge of +Q is pwzsnmcj l8lgb0:0/s d3 :/shflaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is l30 zf/ncs8wdgm0shl: b/:js 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 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 = 8 7;.rmb .d 4cqypb ij.iy0, 7cvdqcrl5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 vrclc7jr i d bcy0., ;dpb8q4qi7y.. mnC charge?

  Q1 = 6.0 nC is at (0.30 mx6 v;i:q(hkl)tz i:i xp9r-ed, 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 forcq:il(tep d6zx:x riv9 ) h-;ike on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatern4v*ecda*jch) ts(*b - id ys1al triangle which measures 30 cm on a side. What is the magnitude of the electrostatic*c) h1(4eddjcs bsi tn- *ay*v 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 poiy9c dkauo )rk)ia9l+9 kmz70ved*h2hnt, on a line between the two charges,)a9oak79d )dey+vz hkrkic90 *m2 h lu 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 t6bg 8lu/o,rci he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so thr/ cilb8,6og ue net force on it is zero?

  Charge +2q is placed at the or3ioxh p e995mzigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that 3oh5m9 pzi9ex the force on it is zero?

  A copper penny has a massoz:ipr663r ,a d9g:; o3hg-se vnht ng 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 foie(6/lmcm) f2 rgnl q:rce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prgme q()nf26 clrml: i/oton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingzfz76vn ky:k; threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsio6:f; knzy vkz7n 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 electrn85ic9b, xkhylo .59hs b)nvlic field at a distancel.8 yhkh 59l),nvbsobn9xc5i of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance( kxe 3/nz7e, ukyhbcw6b0b9f of 1.50 m from a 5uhbk9k ezcfnye 60/ 3bx,(w7b0.0-nC charge?

  A 5.0-C charge is 10 m from ,zqh*0 ros. 1o l1nl yhkqc3,fd e9ks4a small test charge. What is the magnitude of the electric field at the loca kk1q3oh nf,90l e.c ,4hldosrq1 szy*tion of the test charge?

  A 5.0-C charge is 10 m from a small test ch20c hc- stglw+arge. What is the direction of the electric fiet0lg+h w-scc 2ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the03 5-mu9weel hd5q rhe force experienced by a 1.0 nC charge pueqr5m-3heh w9d05 l elaced at the location of the test charge?

  Two point charges each havw4vd hvh+)uqv6- 2cyr9zi0bye a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwey +u2-r9vhz)6 i0q4yvhd bvcwen the two charges?

  A 5.0-mC charge is placed at o(k 3o x(z, xj:2ammxx9 naj8ythe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5mx9x z3 jamx n(x:ooy 2ka,8j(0 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a med. ee 6r+p37ia6im luater stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lin6 ai736peme l+i. daure 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 xe2xse f-z 2vg5 = 0.20 m. What is the magnitude of the electrsg f5-x 22evezic field at the point midway between them?

  Three 3.0 mC charges are at the thrcd-tych.xa7yx d ,z:+ee corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC chargey -td+a,yhxxd7.:zc c. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plao .2jxtvk* on1ced at the corners of the .*2joxon v1ktsquare 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 of the electric field at the square's center?

  A force of 10 N acts on a cha/ f kh8j6i;byx(c-tor rge of 5.0 mC when it is placed in a uniform electric field.rjo b8/ -6(c;hxftkiy What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass 4vkwe;r4g8o*an4nx.1 qfqcqof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in x0x.,4wgqxn eo1 d*rpe k6 9hvan electric field of 6000 N/C pointing downward .v0nhx4*6pexqk xowed1 rg,9. 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 nC. The balmhxj h2zx3 w(fkq5+:aed9d- gllz,v ;l is placed inside a uniform electric field, and is suspended against the force of g3xld de axmz-z,:vg; (5fkq+ 2hwjhl 9ravity. 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 ,l cdjb4x:ie q,.f1xo t*wv(y zjp,q 5is the magnitude of the electric fiezvl,y5.4tp(c iex:q fxqw ,,jo d b*j1ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 m nh;6tfcge 5 mw/2 d+fjwg9;onr; s/mmC. What is the electric field 6.0 cm from the center o dr9hm;cn m/g mow;;jn+g6wsf/52eft f the sphere?