State the law of conservation of elhx 1 -uyur*tj2-g 4ccysn+j .oectric charge.

  Is it possible for two negative charges to attract eacd+m p 7hr8qda4h other?

  Is it possible for a positive and a negative charge to attractz4 )g9zaf 9pun;, l dj2dcyp06krjh s2 each other?

  A glass rod is rubbed wizx+a /.1nn0,zli 8l 6bbcg+yrht 9kwpth a piece of silk. During the process the glass rod acquires a posit91pkyl z zric0 wg.n,8t 6bnh la+/+xbive charge and the silk

  A proton carries a

  The model of the atom sh x890cqd(lisw ows a

  A neutral atom always h*-7i6s ktmvr31 f ijflas

  An atom has more electrons than protons. g 0lg (xxsit2 4es0x/7ryql yc0nsdb :dh f(7* The atom is

  Materials in which the electrons are bound very tightly to 2jj+2km cfxprj188 fu the nuclei are referred 2juj1fxrfmcj8k 2+p 8to as

  Materials in which the el+nz 5*r(cxjobectrons are bound very loosely to the nuclei and can move about freely within the material are x*(n5 r o+cbzjreferred to as

  A negatively charged rod is5h+2w iegsia*6 6bpar brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be256 6 apesi+wrbhi *ag charged

  Sphere A carries a nekp l7o09j qet4h .x3+:wqwy92hb iysjt positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirhe9sy40w 7hwt.:kyj l3j q+ p9xb2qoi e that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscopes:4 iw26 63ceazrypfj positively?

  An originally neutral electroscope is briefly;c ul-xwnaej6a w12 )u touched with a positively charged glass rod. The ela n)2eju6xu -wc aw;1lectroscope

  An originally neutral electroscope is grounded briefly while a positivelvri5xffi q::d 4*u*v7qxa8w ckus3 q .y charged glass rod is held neavuqqws3r4 5xufk7 .i 8aqdxci*v *:f:r it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electrosco1c2)syx: w81b ptruu l34nhifrxq x0u5m .t*ape, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lea04qalh1 2:)cnx3ru* tux8mwr.f5x b1siuty pves?

  A large negatively charged object is placed on an insulated table. A neutrav3s6( veopm4hek7w 1yl 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 vokv6m 3e( p7e4ysw1h 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 Coulomb constant j2;l2 pf*rgvm*jquz-$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largejj9m ppf ,vz.* 1r6bmxr in magnit,6bx.m*j pp zr1fjm9vude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Theu7yg5( q2rcx.mhp 8sgy are placed near each other on an insulated table. Which statement best describes thehc p(x5u2gs 7g8 qym.r electrostatic force between them?

  Two charged objects attract each (09htt9 givqa other with a certain force. If the charges on both objects are doubled q09ah 9tiv(tgwith no change in separation, the force between them

  Two charges are separated yc pvke 1u,9z:by a distance 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 mutual 9ypev z1:,kcuforces?

  Two charged objects attract each other with a force F. What hapomyx;,i7zh n)pens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cent 7n;,z)omhx yiers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated8zo, jgj 6y/x:rtii ,0 czbkv 7tzee+msp02x: by a distance of 1.0 m. What happens to the magnitude of the force on the protzbjzv6yiex /20 :k0gme toc+zi7 xst,:, r8jpon if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance /8u cjz(1+eoonub r;tof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the/u(n; je1u co tr8zb+o proton?

  An electron and a proton are separated by agbo wd7 2;al5o distance of 1.0 m. What happens to the size of the force on the proton if the electron i lda obow;g725s moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ6z1kw9m adk ;ware. When a second point 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 fmkwz9 a16wdk; orce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centrxoj j 29rx8kh**lho m-oxgp0 (oid of an equilateral 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 charge due to a third charge p9 *l- h o2r0xxj(moo8 kghj*xof +Q placed at one of the other vertices?

  Which of the following is not:0ihuqp91u ga a vector?

  At twice the distance from a point cf.*hgwxiq;mhe50 + n erp :xy0harge, the strength of the electric field

  Is it possible to have a zero electric field value between a naq;nh1y1ipjpl(ze5i )i pw 2)egative and positive charge along thelq )pi2i11z;yn paie(j5) pwh line joining the two charges?

  Is it possible to have a zero electric field value between two positive charged,kicdlp4mdx/ 6q a.. gg9z, ns along the line joinindd xgg d lanmkp, /6,qzic.4.9g the two charges?

  Electric field lines near psitiv d9q5epu(k/wt e point charges

  The electric field spdju5,u3v/ zic 9zx8e hown

  Can electric field lines intersect in fmxi r02m)frm v3 l+5ttree space?

  A solid block of metal in2 szq jlx 8w;q.3dhfojx19h d, electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the elect.9hj,xh8wjf x so;d3z12qlqdric field in the block's interior.

  If a solid metal sphere and a hollow metal spherxsncu36.m e 1ce of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface ex1 6csn.3cum is

  A cubic block of aluminum rests on a wooden table in a rea5mf/ lv(0nnhp54m k(b m: jcegion where a uniform electric field is directed straight upward. What can be said concerning the charge on the bloc 4j( aeln5mnh(:0kcvp / mfb5mk's top surface?

  If a conductor is in electrostatic equilibrium near an electric stg+;/b5tzrhxql,x. charge

  A positive point charge is enclosed in a hollow meta rjhws11s z 901cy,)lwsk xgj0)plvq o7v8o*fllic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow so8 pl*wo 7ksz j19gvf1 vrjslwhx)0y0)1,qsc phere has

State three properties of6;smn7kz-u+zx*h1ccsk y 4ifg uy5*v conductors in static equilibrium.

State Gauss's law.

  The charge carried by onen ,xdgf2d x6y+ 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 srth1 gt(9h* pmC. How many more protons than electr r*1pt(hsh9tg ons does this piece of plastic have?

  What is the charge on 1 kg of pro2r:ci f,n3i5zf3iqh as z go;/tons?

  An atomic nucleus ha3 hv.;p s(ydro/w :vdqs a 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 o8qtsbtg+di. cwf3 +,p f 2.0 and -4.0 mC, respectively. What is the magnitude of the electric for+,i td+q.gb3wsfc p8tce between them?

  A 1.0-C charge is 15 m from a second charge, .hi0yr2 yzyh:4i w u0mz-b,nvand the force between them is 1.0 N. What is the magnitude of the second ch0n2wh. iy04iyr uzb ym-v :,hzarge?

  Two 1.0-C charges have a force between th6ohh a honktu:*64 6uoy j2bo5em of 1.0 N. How far apart are they?

  The force between a b a/hhq17) kmeo 8l vgbxbkom8 w:o3kt+0qv +6$30 \; mC$ 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- 8emig*2+n bw2vtv,9k-d lh amN force. If they are moved to a new separation of 8.0 c2gl i8kvd*n ,amm-2 ev9hwb+ tm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedufq( l8k 6fc2 w /ya+bgf09;m6dctjd d on the x-axis. The first charge is at wd t0dmlc2fjyf6d/ a6 b;q9gu(fc8k+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 c5zvh0vmnj) 7;o o7qcon 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 magnitude and direction of the electrostatic force which v0c7hnmco 5)o;jqz v7 acts on the charge at the origin?

  Three point charges are locxu7fjfb* :( xbated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-b u :fjx(f*xb7mC charge?

  A point charge of +Q is plalr 7jmo;,j -aaced 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 lower-am7r j,l-aj; oleft corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5. g(q(* bib;tjy0 nC is at (0, 0). What is the magnitude i (j(byq;*btgof 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 kluz2 14k-yw fnC is at12z u-kylkw f4 (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 vertices oe2k c4*lv t5oef an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electtc2 ele 4*v5korostatic force which acts on any one of the charges?

  Consider point charges of +Q and b 6cgml*t-( pwr 6je,rzntc72+4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be posrn2cb(m*pg w7l c6ret-6z ,t jsible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9r:y8yib 1ztm-vo vrq:(o/uh 4 .0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force ovu r8ozv/ : m(:yiy oqbt4-r1hn it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where c7l)d +a0djr6ux kc rf/an a third positive charge +q be placed so that the force on it is zer/ r 07+flxd6kc) ujrdao?

  A copper penny has a mass of 38zz+ *(zd q-sfp 8/syixqy;, deofx;r.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 grakgsa-vv s7o 5(vity by the attraction of a fixed proton some distance above it. How far 5 v-vsgks(o7 aabove the electron is the proton?

  Two 0.20-g metal spheres are hung fr tx4j k57gi:oqn(j li3om a common point by nonconducting threads whij3o ki(j:g tq5li4 nx7ch are 30 cm long. Both are given identical charges, and 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 of +40e. What is mzi-un al : 8;ruub49cthe magnitude of the electric field at a distance of 1.0 m f9um unlb:ai uc-8z4r;rom the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.5,d wzl2d-t4c/bz n6 mp0 m f6 2w ,z dpbt/nml-4czdrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test ch0+st :bj rm;76kpz1 xpmd5knkarge. What is the magnitude of the electric field at the location of the test d 7p p+5t:mx z 0kn;k61jkbmsrcharge?

  A 5.0-C charge is 10 m from a small test charge. What is the directiqsc; wn, /)qyyon of the electric fiel qy ;,/ws)qncyd?

  A 5.0-C charge is 10 m from a small test chargeydvda:(xv 6 b; lrq4+v. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chylxvdb4 +;6qradv : v(arge?

  Two point charges each have a value of 3.0 C and are separated by a distance of-tbbzc zg+*6o 4.0 m. What is the electric field at a point midwazc- z*o6+ gtbby between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stic u y3vblk;)cd p5 v3pedis1;e.k and a -4.0 mC charge is placed at the 50 cm mark. What is the electri3v;; d) bpe5vp d31.e lciksyuc field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stc73mpceam/hu aw5u.)kz;h6g ick and a -4.0 mC charge is placed at the 50 cm mark. At w hm 3 )7ea56/pmw.cahukczg;u hat 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 = 0.207 7ei1cciwet:k r93 b2a .jzrqah;kv4 m. What is the magnitude of the electric field at the poinz vc qi er. i1;4b 7rkawje:t9hk73ac2t midway between them?

  Three 3.0 mC charges are at the three corz(cl4df*w( f cners 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 centd(4* (clw ffczer of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the fv( pcahv.4h/g/me yn 6, ,94wvrnnqqcorners 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 (649 rh/ (gafvhm qvn,4 ,/cvw.eqnnpy0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5tw 6lkfn aojmz03;dw--v ltx r:ivox) +3pg7;.0 mC when it is placed in a uniform electric field. What isv3;)a pw7nwxxlft +; d-j:migzk t63 ovr o0l- the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass w -+jz;ax h t22x9gdi:ge:wphof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of maqi xu2(+al(sx 7;suhv ss 0.120 g is placed in an electric field of 6000 N/C pointing downward. Wh7luxvxiss(;( ahq2u+ at charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriqu)vfq 5+yl0t/qzx;he .n v(wes a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Wha q/. lxzet( 0wy5)+nhquv;f qvt are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the malw-esd ikjy(v (6r 6e8gnitude of the electric field 5.0 cm evy(d8l- ( 6kjie wrs6from the sphere's surface?

  A metal sphere of radius 2.0 cm c sg4t1z:x 0+b ol 1aen:8ybi8bp qd.vharries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe v4nto1ygb bl0h d8q.81i:pa:z xseb+ re?