State the law of conservation of electric ch:jiv4aw.e59pe /oyz;q t vaz /arge.

  Is it possible for two negative charges to attractj*;ec 4:htcju each other?

  Is it possible for a positive and a negative ch*zcld5s .5bn3 zf4 hvparge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glhf*t5 y/x;(8zm ++luoslswdl0vw+ cg ass rod acquires a positi5wu;8 /xl oldwm( h y gsvc+zs0t++fl*ve charge and the silk

  A proton carries a

  The model of the atom pbsyao2 4ejy lvaaj ;i)-p/;2shows a

  A neutral atom always hctm3s) mh3+ sy;e)1 d vs9kcfgas

  An atom has more electrons than protons. The atom ishvu7 tij+l ,6h

  Materials in which the electrons are bound very tightly to the nuclcv*6)r, -p* ti7zlmdt1vccq xei are referred to as *ccx*,i-)dt6pv1l v7rz m tqc

  Materials in which the electrons are bo3;z,bqipy xxv1 /wr1 hund very loosely to the nuclei and can move about freely within the material are referred to rp;1hv iz 3wbxy/ q,1xas

  A negatively charged rod is brought near one end of ky;3bz+ yf6u38ssnpq an uncharged metal bar. The end of the metal bar farthest 6fp8ssy +3 qb ;un3ykzfrom the charged rod will be charged

  Sphere A carries a net positive char2rtx0gjtre )iwi 9i*6 ge, and sphere B is neutral. They are placed near each other on an ew269r0x )jrgtt*ii iinsulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargejtm1c;,qw8 n o9k:eqx an electroscope positively?

  An originally neutra/z m usjqp3j+r2p-cq :l electroscope is briefly touched with a positively charged glass rod. The electps+q2cjup rq/ :jz3m -roscope

  An originally neutral electroscope is gxi1yr k1 xj1+hrounded briefly while a positively charged glass rod is held near it. After the glass rod is r + rkhy11ji1xxemoved, the electroscope

  A positive object touches a neutral electroscopj-lwnwc3nh)k4y x y(5e, and the leaves separate. Then a negative object is brought near the electronw)wlck 34 5nhyj- (xyscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neu)e -lp(a nam 8tj 51uyc2a8x0v s0elgttral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls alongjutt1sle mag -p 85v(a)2e8yl00nacx 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 Coulomqlgoni: 4 zv6rekku vu8a9 5865z;qkt b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated d)inem*xy l; )by a distance d. The first charge is larger in magnitude than the secon) einml;*x yd)d charge.

  Sphere A carries a net charge and sphere B is neutral. They(7*m +zrkzf lvo )s9bjv wx91r are placed near each other on an insulated table. Which statement best describes the electrostatic force between tz1)ms w j9(b r7vk*oz+vxl9f rhem?

  Two charged objects attract each other with a certain force. If the repibt9nb06 1 charges on both objb1n0 ip6rb9te ects are doubled with no change in separation, the force between them

  Two charges are separah1m s-j:aexa1 na t tare51:*bv(keoynr-5 )hted by a distance d and exert mutual attractive forces of F on each other. rxhymoann(-5 t: aes e1*a)1 ba1-rke j5 :tvhIf the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with hed:ifr0+ .t2mw(wu iztq*f * -upe.pa force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between t-empuwdip.2: e(t r .*hzf 0w+qtui* fheir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by n;) ck35 hzcbla distance of 1.0 m. What happens to the magnitu5nb 3lzhc)kc ;de of 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 1.0 m. What happensfcx4x*a04m oyh m1ww*j y m x0,7etno: to the magnitudea1cxwfj0wx x,mtm0 hnom*4 ye:o7* 4 y 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 k1 5jnbned4uv.1t q8e 1.0 m. What happens to the size of the force on the proton q4. unk5td8n1jeb 1veif 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 poinsrta8m90 ( l8cn s;eqtt 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, 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 chanrslt8mq a8 ec ;0t9s(rge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral 6 e od3rclro32triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic dceoor3 63r l2force 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 isali4-(s vss. q+ 8zbm bzh.c3c;enx(a not a vector?

  At twice the distance from a point charge, the stmist ;zo a(a2gqy6r qc0;ac-ii 9q6,/r .yzhbrength of the electric field

  Is it possible to have a zerfawlz67xgm9i6.l5i w o electric field value between a negative and positive charge along theg 69izmi6f7wal5wxl . line joining the two charges?

  Is it possible to have a zero electric field value between two positive rgr-wo/v :imw; q3-xs charges along the line joining the twmsw:3qvi-/o;-grrx wo charges?

  Electric field lines near psitive point charg5 mcn (+1ycroctbk.z;s+qx f38g8h xx es

  The electric field shown 7 p5w n*r hfb08y osy;dkwp9h:

  Can electric field lin5axq j;3htc+d omkz79es intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifotybbu:xczp o g5ql1 o 5dl,6*(rm electric field. Give a statement concerning the electric field in the block's interior.cqgb 1,5yzpob( 5 d*:u6 lxolt

  If a solid metal sphere and a hollow metal sphere of equal diameteo mq* ai k8:ap+wk*:cers are each given the same k8* aw:o * cpk:a+mieqcharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wood3rk0 re.iakvjk (v*m 0pdv7;g en table in a region where a uniform electric field is directed straight upward.kdrj;ier0.7k v vm 3pg(v*0 ak What can be said concerning the charge on the block's top surface?

  If a conductor is in ele5-vp+a77.zo e f fpm9(kophj ectrostatic equilibrium near an electric charge

  A positive point charge iiuk0 q.a p: w;gpm 64ap+g,fkms enclosed in a hollow metallic sphere that is grounded. As compared to the case withm4,g a imwp6k.kf+ 0qupg;pa:out the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductt5p;6m c6h:j. ngz tjmors in static equilibrium.

State Gauss's law.

  The charge carried by one elevc0mi1 a3qw,z a1 lz-rctron 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 chargeb ;5wum4w psu5 of +2.00 mC. How many more protons than electrons 5;4m ubpwsu5w does this piece of plastic have?

  What is the charge on 1 kg 6fkz n3 xp9+cict ,2acof protons?

  An atomic nucleus has fmnl1n xc.g01+b w;tb:bw7d va charge 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, have charge values ho:c8;2 zbqohof 2.0 and -4.0 mC, respectively. What is the magnitc:2obo q 8;hzhude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fb wst4a5d9i,b orce between them is 1.0 N.a, tw b9db4si5 What is the magnitude of the second charge?

  Two 1.0-C charges have a forwys ,9 mt:qw: hr+ba+tce between them of 1.0 N. How far apart are they?

  The force between a saidm t;. 8qn .w33ekoch5du: $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiend*) rpck)i. qxgj)rn r,k,h0 sce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them,0)nr ix qj. )p)hgrc,kdrs*k?

  Three identical point charges of 2.0 mC are placed ondm( /m-w s7p6tcj i9vyigo u;9 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 acts9 pg(/sjm7y imt9i wud6c;-ov on the charge at the origin?

  Three point charges are placed on the c3iv 9 p1ogc9bbnxfb(qu3( t2x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the r igf3c2obc91x(ub(tb 93vq npight at x = 50 cm, and +4.0 mC 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 located at the following positions: Q1 = 2.00 mC at 8b+cjldgkf6nbo4 3l pio-(m;)ni 2an x = 1.00 m; Q2 = 3.04-iadb 2p6bnnol8 c3n;k+l)jo g( if m0 mC at x = 0; Q3 = -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 the center of a square, and a secocq 5 eyh4hfi9)nd 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)yi4h fq h9ec5 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 a -wd7 hvd:vyoi ;*+,vx4pq wcbt (0, 0). What is the magnitude of the net force on thep+,-yw q;x vhc owib4:*v vdd7 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, ;zg u cub6/h- nd.cw1k0.10 m); Q3 = 5.0 nC is at u/wc-bkn;zgc 16h.ud (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the f tk4bcrl4i: ,vertices of an equilateral triangle which measures 30 cm on a side. What is th4k4rci :f tlb,e magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +8 dbtpb. vgssa6k89y 0 z5kz,m:: gejuQ 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 dtb :0kjz8gk9 sm65gauyp 8bsz.ve,: electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.8jtg 7p/a( ;woan rbm(j-l4 ks0 m. Where on the x-axis can a third charge be placed so th8 jmb nsagp/a4r(-wl o( tj;7ke net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wher*xa / )d(n tuzc)jdnh-e can a thixa(d/ -)un*jthcn )zd rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of;o abds2h4u+iu(e o 8g $4.0 \times 10^{12} \; electrons$ 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 k u6x 6x3d.jecthe attraction of a fixed proton some distance above it. How far above the el.c j36d xxue6kectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconij4df89 kzc;;, kjlw ,ormv/ bducting threads which are 30 cm long. Both are given identical charges, and4wvzm kf,;8dk9; c /i oblrjj, the electrostatic repulsion 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 o udh.:zu14/-9v/a d g stgolryf +40e. What is the magnitude of the electric field atr / o-t/gluv:uh dyzsd1g9 a4. a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of 3 uv21kvnb3w0qd9ud uthe electric field at a distance of 1.50 m from a 50.0-w3k3vbv 9nudq d1u0 u2nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is thezb7mf8(r qz.e magnitude of the electric 8 7qbzzr.(emffield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction o)yu3 f eomo3vt9 7r1zuf the electric fie73o3ouvftz ym)9u1er ld?

  A 5.0-C charge is 10 m from a small test charge. What is th :-de. hpykw8je magnitude of the force experienced by :he jk.wp8dy-a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by *y 1u267, rspjonn, jkdhh8nl a distance of 4.0 m. What is the electric field at a poin2kjhp7 r6ulysdho nj* ,n1n, 8t midway between the two charges?

  A 5.0-mC charge is placed at the q(cyl:. wk9 nm5xc s)c0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. x5 q. kmc9yn)sw:cc( lWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metce.*kzgb-d3 ti 08bwzer stick and a -4.0 mC charge is placed at the 50 cm mark. At what poi8d *ck ebi b-.30twzgznt on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are cmme./j (*lpi c.9y 1wl;i xfgplaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at w i;. mxj1py9l.mg/fe(cic l*the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidh/dn i/a iw(gto qw()zv 8esw/h8)1toe 0.50 m. The last corner is occupied by a -3.0 mC charge.otwae/z/vd)ht(gnsw8 18h)qii ow/( 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 /ps5 hfz33 )hswrjbr* 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 magnih 3s/5h)j*sfr 3rb wpztude 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 .q,8r pe6 phix txm)jn*uc7;s a uniform electric field. What is the magnitude of this et* hjxcm,x7 ;e8 6.pqnr) spuilectric field?

  A particle with a charge of 4.0 mC ha dl)gdx7o;6v*z3ju*pph9y emkr- k 4 js 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 plac1b/grsb1 w ku)b 6zpy0ed in an electric field of 6000 N/C pointing downward. What charge must be placed 1ywprzbgs1ubb)6k /0 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC./v 9 en(/w .xc/rgg. dujz*ykd The ball is placed inside a /zx.djryn.*dkg(9u//e vgwcuniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 +l,djbgo20s c+vic 2r mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacev,o22jc c blri0gd ++s?

  A metal sphere of radius 2.0 cm carv+i/; a lgor2dwtys- 0f5 zrl-ries a charge of 3.0 mC. What is the electric field 6.0 cm from the cen+zlra2d 0 y5wg-trs;flio/-vter of the sphere?