State the law of conservation of electric 3)ty8zk6gl q4j6 ld txcharge.

  Is it possible for two negative charges tsw *-bq+ 8fdswn a.l;bo attract each other?

  Is it possible for a positive and a negative charge to attract each *sxp1u3n /vr*zpt,h+ nyy bw/ r*xgs 1other?

  A glass rod is rubbed with a piece of silk. During the protzozsauz-5e; 08fw c 0o zh-w3cess the glass rod acquires a positive charge z-o-5ze o;3z0z8cat fwu h 0wsand the silk

  A proton carries a

  The model of the atom showstmegmp mey*6(p 8+ cegw. lf8( a

  A neutral atom alway*mp3z lc+(w yos has

  An atom has more electrons wi9)obo(xy9 p4yzlo(than protons. The atom is

  Materials in which the electrons are bound very tiglokxc/ s99 5bchtly to the nuclei are referredlcc/b k 9s95ox to as

  Materials in which the electrop6:yyajd4a4 .c pda( jns are bound very loosely to the nuclei and can move about freely 4( p4aacj jy 6:yp.addwithin the material are referred to as

  A negatively charged 9:02xqbol7st/dgbihzk e +(mrod is brought near one end of an uncharged metal bar. The end of the metal bar farthest fro (t+hdibblxsqg/zk79m2e0 :om the charged rod will be charged

  Sphere A carries a net positive charge, and spher1.p;aqt gydr t:v*yg 8e B is neutral. They are placed near each other on an insulated table. Sphere B t1g:*g8pyrd.vy;qt a is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive 7gvi8ev8,tt v(jt ; 8sper1dmly?

  An originally neutral electroscope is br9o-1z.q. l h:wxueejniefly touched with a positively charged glass rod. The electroscopenuqe: owx 1j.e .hz-9l

  An originally neutral electroscopec +s, njuxg3: *lfs4j-xf g4icc0 frm. is grounded briefly while a positively charged glass rod is held near it. After the ,sl urcfcj 0g*f gj3 4ifn. +4c:-xsmxglass rod is removed, the electroscope

  A positive object touches az-+;kz,;wg r *se qw2sbkcd c, neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does we- w;;k 2krz,c+b,*g qsczsdnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an zq3;5g9zjx x 9ik4d-cd5gvzcinsulated 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 touch the nc 35dg95cv9- xidz4 qzzjgk ;xegative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb consa4fkst2 *i(aq. t jmd0tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dy.*6csowt7w wistance d. The first charge is larger in magnit*7 6wows.y wctude than the second charge.

  Sphere A carries a net charge and sphere B is neu5cte*rxu l/ ;otral. They are placed near each other on an in;o cr5xetu /l*sulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract v31jk,d/hx:v1ddwn e each other with a certain force. If the charges on bothjd1k:e,d/vd n1whx v3 objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracz* gs7l u2jym-a y1i6mtive forces of F on eac*6uzmy1jg s i27 lym-ah other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What had-if2 ; )yftxappens to the force between di;a-fxf) y 2tthem if one 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 protonvyt2nq2 6htiw c bx9amvw1g/5))qq9m are separated by a distance of 1.0 m. What happens to the magnitude of the force on qy2)hq 2 1 t vi95qba /w)tcvwmngx69mthe proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a disto: ep h):jxtah9lg t43ance of 1.0 m. What happens to the magnitude of the f9a:phelx43o h)t :gtjorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated(l fgu3gv eu4 pqfl;3- by a distance of 1.0 m. What happens to the size of the force on the provflug;3elgp qu4(f3 - ton 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 second poinz30 u) lnhurct:,f/cf t charge of -Q is placed at one of the square's cornerst)0c:rful,3 uz hcf/ n, 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 centroid of an equb-y )m5ujte c8ilateral triangle. When a second charge of +Q is pl utb8c e-j5m)yaced 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 one of the other vertices?

  Which of the following is not a ve5kst -vcs /a4wctor?

  At twice the distance from /-4 tqx fh+txku.mht vj: 7hk;a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a n8drkr4cf lr .7egative and positive charge along the rlr4cr 78.kf dline joining the two charges?

  Is it possible to have a zero electric field val1j 4 d:;,+ozha;pg0 ifc7)sum h)w5wyen cwgque between two positive charges along the line joining the two chajg uq 4c)1:gn5 hpw,eyw;h+s fm doc;7)a0izwrges?

  Electric field lines near psitive point charge) y7l;nrp;s;vdsc o(ye142ydkb2 km fs

  The electric field shzntj8r3ybx (o glv94j7 zv(y4 own

  Can electric field lines intersect in vk d8p a)4(qtg j,2ql5xv0 tdbfree space?

  A solid block of metal in electrostatic q9w:.t jzut2nwn; *bkequilibrium is placed in a uniform electric field. Give a statementqw j.n:9wt utkb*; zn2 concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameteu01f8e*8plrivtpp. 9 ;hafwyrs are each given the same charge,e98;yvrl*w appu18phtfi. 0f the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests ok 7seyr;ka4t 8i4 s8zon a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blr z744y8sk ae;i k8stoock's top surface?

  If a conductor is in electrostatic equilibrium near an electric t6lx)r, ysvkq+ k l7ef/yq6i. charge

  A positive point charge is enclosed in a hollow mnixb( : eb/9sykl/fe:etallic sphere that is grounded. / lyb:i:nek(x9e/bsf As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductrl ;+e 7rmdr6yors in static equilibrium.

State Gauss's law.

  The charge carried by onxic6d/ge 58u;hgzyv ekv n 4tu,o/r9,e 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 charg0 xh * )p y-nwddhsz2l)i c-h1.bbrt3ye of +2.00 mC. How many more protons than electrons does this piece of plastic habshbhz pd-0nyd)c r*i yx.ht 2)l13w- ve?

  What is the charge onahe 1v3 4 1vrpnzpa.u*/bups 9 1 kg of protons?

  An atomic nucleus has a charge ofa;kl,3bi vg/9 mlxz42qe4d xi $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separ1s;egtm6wu b 9ated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the e9umt;bew 61g slectric force between them?

  A 1.0-C charge is 15 mk0 (ln)x2udej 9z;cm m from a second charge, and the force between them is 1.0 N. What is the magnitude of the second cz;(k0u) mnx2 cl 9jdemharge?

  Two 1.0-C charges have a force between them of 1.0 N.,t 2y(fn,xdiq How far apart are they?

  The force between a (pac+ ux)0m+ubq a) nn$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initieq( a/r3 l7rq(zeh +lkally 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 electric force betwelh(k /ler7e(3a zrqq+en them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chvtbs/kp0sa i u-y u-m. urj5h6 -bj1u,arge 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 force which act5.ua 6u-rmh0tju1,bjk-ip v ybu - s/ss on the charge at the origin?

  Three point charges are plac3 hv+f2 3aia/ha8 dp sbd,k.dyed on the 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. What are the magnit sba3.fyp ,8kdi3dav+ /dha2 hude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC u n,w-fpo) d4bat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magn udp4ow)b ,n-fitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the centera sxynak2 e5*zy3mj bk+57,fx 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 t73*axnj2bs5f ,axy5k+ezmy khe 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); Q3fxvyo( px y78+ p(mmxdi8t:(k = 5.0 nC is at (0, 0). What is the magnitude pyv 8x (dx78f iym:o(xt+p(kmof 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 (0, 0.10mmrb ns1 y0t:4n 9yns1 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charg9snm0my4r1sy n1b:t ne?

  Three identical charges of 3.0 mC are placed atku*br8 f;hb0j9*mkl w the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onmj kl8b0; bfr9*huw *k any one of the charges?

  Consider point charges o0k yiyo0vje5/f +Q 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 charge of -Q such that the electrostat k0j5evo0/i yyic force acting on it would be zero?

  A +3.0-C charge is at the origin ayr 14k9 .qn6moigg am:nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is miq 6 ngmy4kr:o91g a.zero?

  Charge +2q is placed at the origin aosul3 1a x-z:i(/jxcf1 b(iu pnd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it u :-ozu cp1 1 /fa(ijsxbi(3lxis zero?

  A copper penny has a mass gy 87wd1 v0ipoof 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 forceb 1h2t0e0kn8 kq 1 jxf7h)ypsxra v9o4 of gravity by the attraction of a fixed proton some dissxx ov f)y70r2h1kt18h9 je04pq knab tance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads puadhc l6x(38f lxx80which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads68p(8cax f0 h xl3uldx is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the jvk0z:col t8 6magnitude of the electric field at a distance of 1.0 m from the nucleultkj v0oz8:6c s?

  What are the magnitude and direction of the electric field at a distance ogpbrdc 68u, x)f 1.50 m from a 50.0-nC cb68),pxcgdru harge?

  A 5.0-C charge is 10 m from a small test m23tl/1km82mwtw xtopo 4(zo charge. What is the magnitude of the electric field at the location of the testt k2 z4w2tm ptml(3/8o xwo1mo charge?

  A 5.0-C charge is 10 m from a smal:pw(gm orxp 5-d4arlk8h b:z; l test charge. What is the direction of the electric fir8rg :w;p:dkaox-h 5 zlb4(pmeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fmv4*jnuxd1c2 8s.i asorce experienced by a 1.0 nC charge placeji.4s8n2*muxc s1a dv d at the location of the test charge?

  Two point charges each have a value om+)py(i.zs mof 3.0 C and are separated by a distance of 4.0 m. What is the electric field a (i)ommp.+s zyt a point midway 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 chargus;w s;n1e o*1 l;jznge is placed at the 11oun;l*snewgs ;jz; 50 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 meter stick and a -4.0 mC charg hy ofj56uch31e is placed at the 50 cm mark. At what point on a line joining the two charges is the electri35oyc j1hu6 fhc field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = q(r9tm)v;taf 0.20 m. What is the magnita( tm9 vf);qrtude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the threeu tgts4mk28 p; corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square. p 2tkus4gmt;8

  Consider a square which is 1.0 m on a side. Charges are placed at the corjy+nqvndln(y1 ye9hj; / :ey4ners 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 isle4+ny1jjd yey9nnvq: ;/ h(y 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 uniform electrd thu d+alu6+e1d hb4.ic field6d e+thuhla 1d.u+b d4. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC ji5 k0bpn *5snhas a 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 0.120kg f9c ri6 +*mz1je;ws g is placed in an electric field of 6000 N/C pointing downward. What charge e r1z6;gkfs+wi9m*jc must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofyxqw*,7yr0zs -2.00 nC. The ball is placed inside ysyz*x70wq, ra uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radhsg6tvlf84(:ocx61 xk w iy+*q zn qmwn4 *f+yius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the s fv41gz4:q wlncyyhks*6*fqt n8x w+m6+ xoi(phere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3922 ctp6v b yef(w/ugjtj4l (36v dryn.0 mC. What is the electric field 6.0 cm l gfuy(v r bt4n6(c9ey2vwpd 3t2j j/6from the center of the sphere?