State the law of consergap hlq) 9j*x.vation of electric charge.

  Is it possible for two negative charges to attract each d ccru 3+)kisa,d++djq p) 8xrother?

  Is it possible for a positive and a nfjasah51 5xe7w0e+ f6sjq+ d qegative charge to attract each other?

  A glass rod is rubbed with a piece od.4/aun twspo,z / 4vnc;a.p of silk. During the process the glass rod acu onnz; .o,pcd ata.sp44v //wquires a positive charge and the silk

  A proton carries a

  The model of the atom showaf 2t 8z,bsxtrn+d 7/ns a

  A neutral atom always hmpbzkt m*kk (qv-d/--as

  An atom has more electrons than p7dwd55 +upkilqxc -5protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclexv *m qblq6m / -ayd6ql(up9(ei are referred t d v*bqqey9amlp/( 6l 6(-qmxuo as

  Materials in which the electrons are bound very loosely to the nuclei and can mo8 lwkkb2 h8x.eldd8w /ve about freely within the material are rew8dl k8 8.b/hd2xlkewferred to as

  A negatively charged rod is brought near one end of an uncharged meejhrc sj:b 7;c 9bp6+d-vxl s6tal bar. The end of the metal bar bj-ecr9;pdl6hv +xb7 sscj6:farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ni(w byfgg,n 24eutral. They are placed near each other on an insulated table. Sphere B is briefly touched wit2b g(y4nfw i,gh a wire that is grounded. Which statement is correct?

  How can a negatively charged rodf qdj5i p+goabjir 6+mev ,5:9: kr.ab charge an electroscope positively?

  An originally neutral electroscope is briefly touen4 x9yq vxka muv6 kwr9:)z 4arn7;ne8d m.x6ched with a positively charged glass rod. The ele6a)4vq79 n 9 w8n6x: kdzkemrurxye; 4n .mvxactroscope

  An originally neutral elesdov;nt s6 j-+ctroscope is grounded briefly while a positively charged glass rod is held near it. Aft6ss+vtd jn-;o er the glass rod is removed, the electroscope

  A positive object touches qu kpi4x 54s;djwmhu.no ,0*esyn 4l ,a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it.*5;. nwhmund o4yqi,xjs 44, uls0ep k What happens to the leaves?

  A large negatively charged object is placed on an insula3r4a go; h2 exn2)aojgted 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 the final chgna4or)o j3 g eah2x;2arge on each ball?

  Charge is

  What are the units of the Coulomb const;y aqcpezmk:a +r0-4zant $k$, which appears in Coulomb's law?

  Two charged objects *4n iqr9w -k e d ibdm.fkv*t:+nh)d2ware separated by a distance d. The first charge is larger in magnitude than the second 4vfid e:n-nq.k* hmd)*kr ibw 29twd+charge.

  Sphere A carries a net charge and sphere B is n b4 c0j*p1pqa*2rh : ;rr) pxkdbysr.beutral. They are placed near each other on an insulated table. Which statement best describbp**dxp r 4.s02barkp)yh ;:1b qr rcjes the electrostatic force between them?

  Two charged objects attract each other with a certain fs:j)ozt.y: (m,nt gpforce. If the charges on both objects are doubled with no change in separation, thfpztgmo )s,:n: yjt(.e force between them

  Two charges are separated by a distance d and exert mutual attractive forces ofa/y :e6uukhy5 F on each other. If the charges are separated by a distance of d/3, what are the new mutual fh e/k:ya5 6yuuorces?

  Two charged objects attract each other with a force F. What hju - o 04 amnuf1hp55zbmgh/a:appens to the force between them if one charge is doubled, the other charge is tripled,oan- muh01 55 gab pjhz/umf4: 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 of 1.0 m. Wb/ y6p25-(kxtqd nyv4lc dkm)hat happens to the magnitude oxl6cnd(4- vt)p my25/ybkk dqf the force 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 1.0nb -.vk7asgt :86rqnq8l ksf ; m. What happens to the magnitude of the force on the first e.b:;-7 s8nvq8q tfk6krsan lglectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 7l/drx55 xm 6m k (xpba fux5(qgb)dv61.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proto/) qk76(56umfmb5d bx5 xxgrlp( vaxdn?

  A point charge of +Q is placedk/s)e f d6f ;a,eloqn. at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is obsef./ flsa)e;kqn e od6,rved 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 equilateral triau e-x+hj+n,y:sqd zb7ngle. When a second-de zju7+nqb,: + yhxs 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 charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not * j.zy *+9o:aytfa hify x1ka+a vector?

  At twice the distance from a point charge, the strength of typc6ywz 4v) ksxn447khe electric field

  Is it possible to have a zero electric field value between a negatived (tlz*.wjx,z and positive charge along the line jod *xztl.j,(wz ining the two charges?

  Is it possible to have a zero electric field value betwjuw6(wsr kxg23/pky8 een two positive charges along the line joining r(xpw guys62 /8jwkk3 the two charges?

  Electric field lines near psitived6tmhje2mc im8;e*(r point charges

  The electric field sho/vo:vhodz9jps05xu3 3mvfn 8wn

  Can electric field lines intersect in fldraagjx4 q)b i6dd 588:aat /ree space?

  A solid block of metal in electrostatitf+ x0, dtnwr39w4s/ h ple z8hbp.m+jc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the blockhz w3n,p+twes.b80 + r mt4d9/hp xfjl's interior.

  If a solid metal sphere and a hollcyymb+ll:3em50v h *qow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between 3*yymc5m +vhq0l e b:lthe center and the surface is

  A cubic block of aluminum:xb vy+gq z*e) rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'gyvz :b*x qe+)s top surface?

  If a conductor is in electrostatic equilibrium near an electey;mbr e,)dme(d0 wfhi :*usjx71eb, ric charge

  A positive point charge is enclosed in a hollow metallic sphere tha;vz y5 ve/rbg+8 ku7e o)rqr(zt is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hv(eqbzo +egrr) 8/5;7 uyzrvkollow sphere has

State three properties of conductors in static equ8 ,.ws9k gtsjpilibrium.

State Gauss's law.

  The charge carried by one el3an s:6h0zy.nl( sbowectron 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 than el x w( :xfun1i/v5us4mmectrons does this piece of plastic u14/vs5x:i mu wfxnm(have?

  What is the charge on 1 kg kmhg xa 52y+c u u8n:j8q-;aopof protons?

  An atomic nucleus has a charge of-kgd 2o; 3lbte $+40e$. 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 2.086dz0n9d z +ig cl0djf,xnw,y and -4.0 mC, respectively. What is the magnitude ,+zi ngy0 ,0 x9 c6jnddzlf8dwof the electric force between them?

  A 1.0-C charge is 15 m from a second charguao0rnb(t vk:g ,.;gq t:dpd9 e, and the force between them is 1.0 N. What is vbq:dgudot rg9.n(;t p ka:,0 the magnitude of the second charge?

  Two 1.0-C charges have a force between them *w latl+/ as7 wyx3d.m pq1uw+of 1.0 N. How far apart are they?

  The force between a )8vgxh -a wbj2+wlns($30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 rpsv(1l6b* jvftr96apy cy a0z1( .wh cm apart, experience a 1.0-N force. If they are moved to a new separation of sc rwva pp.h*r69(y6ytvb0f l(jaz 118.0 cm, what is the electric force between them?

  Three identical point charges of 2.( k;5xhh8j, rbif *hpk0 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 of the electrostatic force which acts on the charge 5xfihjp(h ;rkk *bh8 ,at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed at 2 elez4p7ejy(tdw52s psqf/-m .6cf jthe origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. What are (e- qysmcp ffd2jsw tlj274ze/6.ep5the magnitude 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 i7 d4i-g2lstv mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. -4 i2t7ivdgslWhat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q i))0 gfe/yd a2o njv-ikw 0d)ths placed 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 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 low oik/- tn day)v0eh)dg0 fj)2wer-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (1sr d5 9-o:bjawy:kse0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitu - :dkesoy51:arj9w sbde of 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, 0.10 m); Q3 = 5.0 nlm4w.)8gcv.na;uf/ e2z c:uezsh hqwly9q; 1C is at (0, 0). What is the direction of the net force on the 5.0 nC cha;sc fq z c:a4hun9zqlw m)1vy2e.u /g8;ehl.wrge?

  Three identical charges of 3.0 mC 5o7 b eh1px njhbi0b5.lgf/,*uoo4 jmare placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts j j,1475/gfl0bin*obhuoxh m . 5bo peon any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m:-xhku 6)0ac/ezck muzf-s1j. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actume h /cu06kxfz-za1:j-)cks ing on it would be zero?

  A +3.0-C charge is at the o7 15h-fv gt7j: irmzjsbn*yk7rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net7ygr v*bz5thj 71n-s im: 7jkf force on it is zero?

  Charge +2q is placed at the origin and charge -q is place su5z4d0.rzjdtz8r2z d at x = 2a. Where can a third positive charge +q b t8u0jz2.dszrzd zr45e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A ( *6mam 3;tin+*z45yai cbjflel.akqtotal 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 the attrkyx4h(w44tazv9 8h hwaction of a fixed proton some distance abtxk4 yhh9 w448vaz(hw ove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from7up7tu2gp q3 x a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angug ppq23x t7u7le between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is, bjifvj5ser:02r3 n:y s a6be the magnitude of the electric field at a distance of 1.0 m from the i,5jaefrse3: j0svn b6ryb:2 nucleus?

  What are the magnitude and direction of the electric field at a distancx q8u5or ub yqle.jzls.-1;l/e of 1.50 m from a 50.0-nC chyl.q. 1xr- /llue ;sjzq8o ub5arge?

  A 5.0-C charge is 10 m from a small tbg +a5rt0 -hdpest charge. What is the magnitude of the electric field at the location ofr+50b gthpad - the test charge?

  A 5.0-C charge is 10 m from a small test5u/ :bwwmsfm0vb 4* mkzmp:-g charge. What is the direction of the electricb/0p :vmswm: 5 -zbumm*fkwg4 field?

  A 5.0-C charge is 10vowq mr:63 *w kyfyw/, m from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chaw 3mwvkw6yy:of r, q/*rge?

  Two point charges each have a value of 3.0*(xt 3ovcm wb0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two c3( 0vmxwb*t ocharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.8-.s - ( o8 i,; fah6epfovd;dpvyggok0 mC charge is di8po-f;k f(- 6 a;po. yvh egv,8sgdoplaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed atns8 xs3y ibxkir*6 8l/ the 0 cm mark of a meter stick and a -4.0 mC charge is pl/8kysr 3x xn8sblii6 *aced 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 = g c1o(5c )l*3mbthiim 0 and x = 0.20 m. What is the magnitu) 3 otmlcbg5(icmh *i1de of the electric field at the point midway between them?

  Three 3.0 mC charges are at 8,b*vua,,jtz 5e e/ xkigg) uythe three corners of a square of side 0.50 m. The last corner is occupied j ug,b vi,8a5 kxe gut)/e,*zyby a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the vesv ;;yf r4+xi)ob i/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 magnitude of the electric f x+o/4fs yibe); viv;rield at the square's center?

  A force of 10 N acts on a charnp+n q( gm;9ycge of 5.0 mC when it is placed in a uniform electric field. What is the yncg n+mqp;9 (magnitude of this electric field?

  A particle with a chbeg* tq5a:pp31fh4o j;tu2a.o mr2 xq arge of 4.0 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 placed in an elect0sn0e6g p mb*rlkc m0*ric field of 6000 N/C pointn6 0*rms00p egb l*kcming downward. 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 -2o1nwzk9g3nwl, f 1i v2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the z1vlgkw91 ,n w3 o2ifnelectric field?

  A metal sphere of radius 10 cm carries a charge lxfy 7rf 4 96i(fcp0irvks4 ;pof +2.0 mC. What is the magnitude of the electric field 5.0 cm frof;r(lif 4ip9svr7 k4yxp0 6fcm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whath*vs 2ubqw9 o /ogh5m. is the electric field 6.0 cm from the centerm/59vs2h* .quogbw ho of the sphere?