State the law of conse dfdkd*u 3 f8xnz+ t-zv-wm(o:rvation of electric charge.

  Is it possible for two negative charh 0rr(-0ef xotges to attract each other?

  Is it possible for aq4-)nx k uxgp0 positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duhinkycis(i0+h; w :7ering the process the glass rod acquires ah0:n;+(kciey 7s wiih positive charge and the silk

  A proton carries a

  The model of the atom s4(zv7ldnkg *:bjrmx w en 5(.bhows a

  A neutral atom always h he q4(fqex/;uas

  An atom has more electrons than protons. Tlff2 3a :d, n1tv1qbl2 cu ac,+cmye))nhjfe.he atom is

  Materials in which the electrons are bound very tighbkl lc9 ,vq25gkm *y:j*zdpf8umr49q tly to the nuclei are referred to aqdz vk9jlylmr8pg*f,5ub 9 qm 2* c:4ks

  Materials in which thewj k;9zqltm-4 tc, 9nv electrons are bound very loosely to the nuclei and can move about freely within the materi;q49 mwnlkt z-j,tcv9al are referred to as

  A negatively charged rod ie*i tsei-utv) f4c .)ut6iey: s brought near one end of an uncharged metal bar. The end of the) :6ft uu*v ty -s4eiii)etce. metal bar farthest from the charged rod will be charged

  Sphere A carries a net posit*ab iqk9 es:(aive charge, and sphere B is neutral. They are placed near each other on an insulaka q*a be:9s(ited 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 /ij y2c3d ia vkm(4pz5 6b+eqf- za:wijg7u: opositively?

  An originally neutral electroscope is brieb2 yu li/*dohi*,en m2fly touched with a positively charged glass rod. n/, *eb h*olum 2i2diy The electroscope

  An originally neutral electroscope is grounded briefly while a pvaq(q5 udk mi 4u(:8x syfcoce1t)2-iositively chargey cd(q815iu a4i-se)vtuq2 m(kfc:ox d glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutjp,splrroi ;+ ,dr )-dhw0;q nral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the i j +hp,) pdwr0n,sl-rqd;o ;rleaves?

  A large negatively charged object is pla8;bt xe1n8x6:mtj 8ix6/l qw,mpsfcnced 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 the negative object. What is th:fmwxbm8l xj/ x p16;8,tnc8iqtsen6e final charge on each ball?

  Charge is

  What are the units of the Coulpsj 8hun 7 hp4g*dwj0e* 32pncomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la31oe/vr3tr2vkt 1 cjirger in magnitude than 1vkc1tj3ve2r r/ti3othe second charge.

  Sphere A carries a net charge asirz0v-3:hm s :r6woqnd sphere B is neutral. They are placed near each ot3zh:rqw:sr0sio6m - vher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the csx )ehfo3r4hqw -w9) kk.ym1charges on both objects are doubled with no cxf.)4kh1hwkew r3y 9c q)smo-hange in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrabs(2v3s q8 abq:lbuh-ctive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutua2ul h3as8-bqv( :q bsbl forces?

  Two charged objects attract each other with a force F. What x )lgwyrw k,uhmv)23 ;happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced tomw2 )hg lk;xu3y w,rv) one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happeny-simrwsjy;5x 3x (s -s to the magnitude of the force on the proton if a second electron is placed next to the xyij(- s;w -yrxsm s35first electron?

  An electron and a pr: hkw;pwxlh73a;fy/x9 r i1 mpoton are separated by a distance of 1.0 m. What happens to the magnituwm i:y p;wx13pl/ hhxra;fk97de of the force on the 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 happen 5sh1h7 hddd(f0.jhx5vx5lbk s to xdfx7 j5l0hk b1( sv5hddh.h 5the size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placeml2/--woma oq; ld:4byq/y aed at the center of a square. When a second point charge of -Q iq-waoy;/aoqm :lb 2- l m/e4yds 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, 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 equilateralqc-.p/dy91tbjrlf)xi0 n)6 ej cf*c l 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 center chc1clpqt )-l/*dj i)fn exyb.jrf9c06arge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is noby2dh-6h+6 a81dabu8fk vo wvt a vector?

  At twice the distance from a point charge, the strength/ime 0 ai2ql lr+g1kgpz0n+10naddm8 of the electric field

  Is it possible to have a zero electric field value between a negafi fmby/(s3 (s() npb +)walrzy)k9+o 5d enjgtive and positive c9+( ()dnflf+is/rs3by ogzbm a(k5n)yp e) jw harge along the line joining the two charges?

  Is it possible to have a zero electri6;wliv*f9k m+nh x8hf m 74petc field value between two positive charges along the li*tpn hixfwlef4vhm87 +9;mk6ne joining the two charges?

  Electric field lines near psitive 8,h+bh,t3oml t 2w kizpoint charges

  The electric field sh2u hxzq4alhy24x s 80oown

  Can electric field lines intersect in free space?j .dd ogwn1i hbxnj9z *8r9z2e9h2no2

  A solid block of metbuv*; 7wsz(j7rj pf a,al in electrostatic equilibrium is placed in a uniform electric field. Give a ,jb7v* w7r;spa( ufzjstatement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere7 ttd9zg1 kdtd0cxp- ( sc5hjea30c8g of equal diameters are each given the same charge, the electric field (E) midw8 xtk he317cd-g jtt 0dsdz(0gc5p9caay between the center and the surface is

  A cubic block of alumiq d9;a:ag (xs,usek ktz b,1a3num rests on a wooden table in a region where a uniform electric field is directed straight upward. What can bet 3 quxk1,: ssa(akadb9z,;ge said concerning the charge on the block's top surface?

  If a conductor is in electrost 7 nny.qig20qlatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedee,fod dl+i5o6 (p ;nv. As compared to the case w+ ,d;pio5odlef6vn(e ithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.ww joy83 (o*)k,f rjun

State Gauss's law.

  The charge carried by one electron 8fcyyz1;, hz;c,a.va7xfy ihis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net c t3,ij;.h,h srjxxz+a harge of +2.00 mC. How many more protons than electrons does this piece of plastic haver3j six,h;j,x. t+haz?

  What is the charge on 1 kg o24vz0erbin 2u f protons?

  An atomic nucleus has a charge of ha) l:/ 2ohgu(hyq9v/d y1pkz$+40e$. 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 chaufv-f:9 4aicc rge values of 2.0 and -4.0 mC, respectivel4fvua i9:-fc cy. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force b vkhq:xj: d,;7bkk8abetween them is 1.0 N. What is 8,qkvbkx7b:k dh:;ajthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How 7 *lekqfy fmmy)o +8hm0z pj31far apart are they?

  The force between a xlm3+ b/hai, gp6xyu4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 l;lukt: 8yt:ecm apart, experience a 1.0-N force. If they are moved to a new separati8y :ktt:u;ellon of 8.0 cm, what is the electric force between them?

  Three identical point ch cn cyr.kd1w;jv9,/ osun* gh.mc:q v8arges of 2.0 mC are placed 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 :d;s,q hvk. wn91c8m/jroy. guvc*nc of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A.r lbe;e:bjp) x,vu5 w 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 magnitude and direction bu ewl ),5.r:jpexb ;vof the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1ebi arz53+tba 0vl6ih* /), lgfuaom ) = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whiz)bet*6vag o0ra lim l/5, )ba3+ uhfat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pckaue)rt 8.v,laced at the center 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 our ,tc) .a8kevn 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-bcnn-(h qh9vcqm3; pgg7: 0 a npjfda x1aa;3 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcg- h ;x qa:3 f; n(g1amad9c 3capbnhq-pj0n7ve on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at )ko:e) n l56hlhp5tf xw. arqrs5:-wb(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the:h .p l:)xlrsr nf-56 a55ww)tkbohqe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticad5 r(twjqn: bd,cj9. es of an equilateral triangle which measures 30 cm on a side. What is the :w.j5 n9tac,br qd(jd magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Qkf3c9iv tj(7ghduo, z3; a 0tm and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, woulmi,j ka ;u(03h79tfo t zg3cvdd 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 at1xvncj6 g* :sah +zn75bxnht f-n7 xl/ the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be7xh 5s-nav l x:thgnn6bxfcnj z 7*/1+ placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where x4t 9gkeo6 d/ 6nmqx+ecan a third positive charge +q be pla/eg+dom9t66 nx4e kxqced so that the force on it is zero?

  A copper penny has a mass of0zbi 78pbz(o 5ypf9ni 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,/kzx;0xp6 wk p -rl :qrw2 -rkxb0sum by the attraction of a fixed proton some :br6w 0- r2x ;sxu qkrzw,/l-0xkpmk pdistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducti wax5cv/ g;r,ang threads which are 30 cm long. Both are given identical charges, and the electrostatic repulg5x/rw;v a,c asion 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 i i9u8lq +qqhxq1(m8 lcs the magnitude of the electric field at a distance of 1.0 m froxmqq (lq98ch +iu q81lm the nucleus?

  What are the magnitude and direction of tbd35; gmlj pydlb9j +/he electric field at a distance of 1.50 9b+5l;y gm /3jdjdpblm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from f4d0nrb rx;hz ni/km. 01slz7 a small test charge. What is the magnitude of the electric field at the location nzzkd0li0 s .nm7f4bx hr1/r; of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thew, +2zi.sss2 bobyf 5m direction of the e, bsmfyo2bz. w +5sis2lectric field?

  A 5.0-C charge is 10 m from a small tes xnkp17)q(gly t charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of ty7g)1nxklq (p he test charge?

  Two point charges each have a value of 3.0 C and are separated by a did:(h)tjg v7b astance of 4.0 m. What i:baj(dg h 7)tvs the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mauj (ijx j;pljkst; 20;rk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm ma2kslx; ;iu jjjpj(; 0trk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC0 xrh- vux)1qj ;wkx4r charge is placed at the 50 cm mark. At what point on a line joinin v0 k4)w1-ujxxr;qxhrg the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placedt;1 ct81b lxlin5 ron5 at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwix cn t;81 ltbrn5lo15ay between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. :e(j*1,zhgak rd: e trThe last corner is occupied by a -3.0 mC charge. Find the zr( ht,r: k1:egjae*d electric field at the center of the square.

  Consider a square which is 1.0 mgzep1(o,5 t hp on a side. Charges are placed at the corners of the square as follows: p5e1, togh p(z +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 charge of 5.0 mC when it is p:e.lj: ei6qxtg ) ,ub+e*btrklaced in a uniform electric field. What is the magnitude*xbi)g:eb jttuee.qkrl ,: + 6 of this electric field?

  A particle with a charge of 4.0 mC has a mass rze g5d;;ec9+s/r n4 w5uxxwyof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placed in an 49:nvqv+gfd4yb :ogp o7,iud 6abri8 7m g9gxelectric field of 6000 N/C pointing downward. What charge must be placed on t gg4ovnyibq7vd96d8:rfb7pu,49+ x mg o ag:ihe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla 99ghxl)buj3d ced inside a uniform electric field, and is suspended against the forcujgb d)xh993l e of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 7q(j43ml 8bh(y gzg tn (tptz)cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere(y((h mznt t 8j)q7pbgt34zlg 's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whatzqkyyg; f5c9+ is the electric field 6.0 cm from tqkg fz5+c y;9yhe center of the sphere?