State the law of conservation o2 8mboa9:u(+sne6ch cejo2yugn y * w0f electric charge.

  Is it possible for two negative cq)h fatpu,1 mm8-o 8. psu8p1bq,krdk harges to attract each other?

  Is it possible for a positive and a negativ5s fy h+.w3uac,nwkc .e charge to attract each other?

  A glass rod is rubbed 3p fb2uvsog k4p7k( pz(d-qo(with a piece of silk. During the process the glass rod acquires a positive charge and the s3v(spdf 47pbgp(kqo ku2o z -(ilk

  A proton carries a

  The model of the atom shows 2 dc5x.wmavg j; d (ydjj.3i6ca

  A neutral atom always has(nmi(ya3gq3hc cy g*:d1u6 ( /qkuemi

  An atom has more electrons thlel.p2g5 -qcm;c,fg i an protons. The atom is

  Materials in which the electronl;9v9/,jxkc pb t-sins are bound very tightly to the nuclei are referred to aspi9bn c,-k/lt s9jx;v

  Materials in which the ed321bp ,dysn /n5npfg lectrons are bound very loosely to the nuclei and can move abon/pfs 2d35pd1nbyg,n ut freely within the material are referred to as

  A negatively charged rod is brought near on+uy 2n9m)kx:o5ylo s p8v9vcue end of an uncharged metal bar. The end of the metal bar farthest from the charged rod n my2y:psvvlo89ukx+)uo c 95will be charged

  Sphere A carries a net positive wg5 q1j3xiytb9k n9t ,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 grg1t9b9, w3k nqjiyx5tounded. Which statement is correct?

  How can a negatively charged rod charg8e3zyrlxny/ gt(0yv 3e an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivel. )yob 6;r hiwd5qdzqu l4.g1iy charged glassw ..)r;gu qh64bo1ziqdi5yld rod. The electroscope

  An originally neutral elb you,ry3q6g-;v5ix cw w .ca0ectroscope is grounded briefly while a positively charged gl6cw.xyvq- w o,0b5ira 3c y;guass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separum6t-+ ueg6 h7u, g88m) uts.dqvi pfjate. Then a negative object is brought near the electroscope, but does not touch it. +qs6,-p utdt87u)8ug gim meuj.h6 vf What happens to the leaves?

  A large negatively charged object is plaa(isw2fa83 42 s ldhigced on an insulated 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 l iid8aw423sa2ghs f(the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the dufm476e 5s wx6me oj*b/8 jnrCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separat 4i/ fpk5m7h xs;+ou5pdam;tced by a distance d. The first charge is larger in magnitude thaa5 4outi7m/ pckdm+fs;5;xphn the second charge.

  Sphere A carries a net charge and sphe+x -vlp1.kmjgre B is neutral. They are placed near each other on an insulated table. Which statement best describes the elecx gjlm1kv.p-+ trostatic force between them?

  Two charged objects attract each other with a cer*ayzrx 5j *).f9ggu kotain force. If the charges on both objj*xryku )go5*f za.9g ects are doubled with no change in separation, the force between them

  Two charges are separated by a distj xy/2b1eivi9y w) q(+m:ny8dm qk 1xjance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new )ymxj/bem xy(8 q1iwyqvk+id1n2j9:mutual forces?

  Two charged objects attrac1 m.q v kyb(i 5qn7k z;4l:*lide/bkeet each other with a force F. What happens to the force between them if one charge ybk iee ;k/m (q i:llz4*.v75 kbeq1ndis 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 are separated by a distance* ,)wcka,a y(sewp uw2 of 1.0 m. What happens to the magnitude of the force on the proton if a second e,,*(2w) wawskp uayc electron is placed next to the first electron?

  An electron and a proton are separated by a d. 4e8 l-l oo )ekax.t;tz1gzvgistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the pe8ezkot1g )-o xl4 ;.zga.tvlroton?

  An electron and a proton are separate) t, ; 1auxq;kflnk+yk1 8k- zkqpef(id by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0 k,8p-n;kx(+ekk 1t;i zkqyfq)a lu1f.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When lcytck4*87d- 2 hdritkm g7)ea second point charge of -Q is placed at one of the square's corners, it is observed that an el* tkgy4 7 7dec2kt-hm8r) clidectrostatic 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 att y ww)p952zxv the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forc5z yp w9vx2tw)e 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 ejgg:3o(2xg qis not a vector?

  At twice the distance from a point charge, the strength yr* matq sh48,lad:5a of the electric field

  Is it possible to have a zero electric field value between a negative and positibg1 a7ol r;.kbve charge along the line jo o.klra7bgb 1;ining the two charges?

  Is it possible to have x+ d b( 0w56jkp)pqbcma zero electric field value between two positive charges along the line joining the tj6cd)0b (b5x+ kppw qmwo charges?

  Electric field lines near pm iait dz1)nx5*gbj4+sitive point charges

  The electric field show92q ogxot9xn6n

  Can electric field lines interzm3tw y(91bpklc5bf+;cia 1 hsect in free space?

  A solid block of metal in electrostatic equilibrium is placed ocvpwww.)u,b;1 cvo k0,;phz in a uniform electric field. Give a statement concerning the u po,zhwp)01cc wkv;w.bo, v;electric field in the block's interior.

  If a solid metal sphere and a hollrx3gto/og7m*76u 0wl y ltqm4ow metal sphere of equal diameters are each given the same charge, the el7xo wt3*/mluo lgt7yq0 6g4 rmectric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden zsljp lm 3pz1.ir4i* )table in a region where a uniform electric field is directed straight upward. What can be said conlp4 *zs1)i l3.z ijrmpcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium negmr (7ttbq(24sstu9 ml0j m(dar an electric charge

  A positive point charge is enclos:senhfhd. : re0uh)9ked in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollown9 e) heskrd .fu0:hh: sphere has

State three properties of conductors - s:o qs1cps(b26)wagd7doaw in static equilibrium.

State Gauss's law.

  The charge carried by oneg/1oskkz0 tv dn+ 8uc23z4j-t jvhlj 9 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 more62 n5v 8nzg a0;eeqd8xyh8ik2 th jdk; protons than electrons does this piece of pnt2dyeqa2088gkkn8 i ;jz5hh v6x;ed lastic have?

  What is the charge on 1 kg oyorrm9e2uy)y4d1 v 5q f protons?

  An atomic nucleus has 3;ws) ih*prw ;9swmzf a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separab l5 zezhf8-c6f -8wstted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw-8e5t cz8wffsh6b -zl een them?

  A 1.0-C charge is 15 m from a second charge, andqwe v) (jevgb 2v4 f-9wja5i jf23t7uz the force between them is 1.0 N. What is the magnitude of the second chawuj 2 avj v9wf 4biz2-j5)7e3(gev qftrge?

  Two 1.0-C charges have a force between them of 1.0 N. Hoemm+d.gvbw:da66- sanz, h, f w far apart are they?

  The force between a (coz c8o8spzq4t.9: huapg-xidhmmd0f 0t; 8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force.h*skg*d6rb2 f5t ly: f If they are moved to a new separation of 8*d:y6rshgf bl 5kf*2t.0 cm, what is the electric force between them?

  Three identical point charges of 2pr2e renih4 0bqydew( j:f k:*) glp-/.0 mC are placed on the x-axis. The first charge is ad eph rr:- je 4kgf)*wley(/n:p20bi qt 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 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargeg u-51d, gqs7qp*8yd ksc 3pn zce1ql5 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 elezn35gd8 cyg1 q,p 5plckd qqus 1*7-esctrostatic force which acts on the charge at the origin?

  Three point charges are locas:gjexn i-.7eted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3g.:ije n7 e-sx = -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 th umc iwr ulv:)yf2 a8pu)et439e center of a square, and a second point charge of -Q is placed at the up4mpw8 yvlueau 9ut:)ir23c) fper-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 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 = 5.0 nC is az(en yu,)hovk8b7eki9*w b k)t (0, 0). What is the magnitude of the net force on the 5.0 nC charg on9 ,h8ezyk*(iku)k e7bvb w)e?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2(z u*t idkn pg4*9t by5lzpq8wh9tx-: = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of thi 8*n-bppku*4zw9tg9z :dx( l5tq yhte net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pla 2sdaw7)lgvn ;k ze/o) fl:cr.ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic neo .ag7)rl;vzdsf wlk 2)/: cforce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At whaj2z25 sc p2+ ; yogvi2ewos/gst point, on a line between the two charges, would it be possible to place a charge of -Q such that thej2 2ogcowp 2e ;sv2g5z+sis/y electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a a j*39xyyz:hez.m7 hl+9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nyjh: .hy zm3l9ze 7x*aet force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. nkzm 3*k;ymr7 Where can a third positive charge +q be placed so k3ny mzmk*r; 7that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total s+beb zsh+f0)0p:zg c 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 b0q h h4dfa6bat0cg /8ez6 3xqt c.)methe attraction of a fixed proton some distance above it. How far above the electron3f68 hbm4qec 0.c/h dztexgbqat 06) a is the proton?

  Two 0.20-g metal spheres 59jfq33o1n7b gjajkk)xyet 527a vn t are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until )7n jk7b aay5 9otfexgv2q53t k13jnjthe 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 electric g;g+ te1upe: mfield at a distanc+em;gg 1ep u:te of 1.0 m from the nucleus?

  What are the magnitude and direction of the electe; j,g -m 34xjpw*aqwkric field at a distance of 1.50 m from a 50.0-nC * ,wmpkewgjx aq4; -3jcharge?

  A 5.0-C charge is 10 m from2qzbys fqi(h90lnx7 6 a small test charge. What is the magnitude of the electric field at the l h6zxsbi(l729 f q0qynocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of5a)xh/0ceag0r y 8byn 4fde 6d7 yb8dk the elyd7e cdy8ky/g0r nba6f be4h)ad5x 80ectric field?

  A 5.0-C charge is 10 m fromsufhh2w,9h2 f a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location s2h,fuhhf9w 2of the test charge?

  Two point charges each have h0(nw 8 +vsrp,zksgh)56s p sma value of 3.0 C and are separated by a distance of 4.0 m. hn0gh zm+ws, s)r pk 58(ss6pvWhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mab o(3/ swja udw5rjrc (28tc(e*u)o wcrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric 5/ 28c)*(sea cub(tocrwj wd3jou( wrfield 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 chargee+7h9ubb vmo:*e uu;9as (hzu is pasb zbo :h u+;eu97(m9vuhu*elaced at the 50 cm mark. At what point on a line 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 x = 0hq7yi9mz / bw,zt/7z x.20 m. What is the magnitude of the electric field a/,yqt9mw h7ibz z/ z7xt the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.lz rf) y*73 o(bwzdwu*8jwi;q50 m. The last corner is occupied r(l;wjuyzwfb 8* ) zi73 *woqdby a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 dz6y*/l-ftxf + yb 1-1+t2lfiik asmt 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 magnituf tif6* / -1 y+m2altlxzids -byf1kt+de of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it ;h0oml5msuly,w: 2vx k3 zkf8 is placed in a uniform electric field. What is the ma ,v2ou3yllz :;h80kmkx5 wsf mgnitude of this electric field?

  A particle with a charge of 4aeuc3t (y8.l r.0 mC has 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 0.120 g is pmjz)ur3c4.)nuous b4 )*r vowlaced in an electric field of 6000 N/C pointing downward. What charge must be placed on the bouvn .m44 zuwr3* ))o)jurscb all for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T 4yj 6ml7fbn/ ypvo:5mx6bn+dhe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and d4ydn mbopml6x76/yb:+j5vnf irection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mag+wze*d mu+3ok b p,w0pp,e7zrnitude of the db0upzeo, rmw*ezkp+ 3,7wp+electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries ag nv8 ijlgi:aus3qq; e/48k*j charge of 3.0 mC. What is the electric field 6.0 cm frog;/ lnie8qi384vjkj us gaq*:m the center of the sphere?