State the law of conservation of elec/tt 0oo8:wf fet9gz i1i48jlwtric charge.

  Is it possible for two negative charges to atj0 d- / iwk32byj1hpi-qut n)/3mj*moxfvy2v tract each other?

  Is it possible for a positive and a negative charge to attract ee;dw zd 054iq-seb vwht8,2u uach other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac 1t,/bk0ebls jquires a positive chatb,1 0/slebjk rge and the silk

  A proton carries a

  The model of the atom sh5mhpam l,pf 9;ows a

  A neutral atom always b)t id q0ypt9p)(ks; vhas

  An atom has more elei- -qxzynj mj-1eha(:tk+y gvat4;(sctrons than protons. The atom is

  Materials in which the electronsy;5 kg ; 7,ikh+ldc9ajvnng*j are bound very tightly to the nuclei are referred to asnch9v+,kj y;ln;gd*jgk 5i7a

  Materials in which the electrons are bound very loosely to the nuclei axs92fkh 5 +kzdnd can move about freely within the material are rek2 +5k zfhsdx9ferred to as

  A negatively charged rod is brought near one enle2d )q h;8jf,.e vvmqec y2h3d of an uncharged metal bar. The end of the metaj)38 vhf22.vme hq yqlc,;edel bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theyb,nbtu5i 1j3z are placed near each other on an insulated table. Sphere B is brtuzj5,3 ibn 1biefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rodt*yeq5/u)w8; (fs gjyh jk;o h charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charge 82ko /(uwab(d1q gnaqd glass rod. The electros gabqkw(18n(2 u/aoqdcope

  An originally neutral electroscopex*up c. 9.teex09;yoahoxqn: is grounded briefly while a positively charged glass roc : xypx*xo 0ueh.. 99a;ntqeod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t.p ov,kiq+e1i ad g9njala8g9gy) wqg-8+g .j he leaves separate. Then a negative object is brought near the electroscope, but does not tv-jpq d+y+gig aeg. ,nq8j1iggkoa ). l9 8aw9ouch it. What happens to the leaves?

  A large negatively charged object is1 s4h ttq1/huk placed 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 ball1 4/sqktht1hu, 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 og7kv- +(jy7 (.guom 4w zibmskf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is latdwz/*,fa 8dmrger in magnitudef,*wadm8 / ztd than the second charge.

  Sphere A carries a net charge an fzdn-zrd;w+t4o-ve7( sud l4d sphere B is neutral. They are placed near each other on an insulated table. Which statement be fn+zd -v dt(w4r7os;uz4edl-st describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the1wnk o7 nvu m522rj 8fih)qz5n charges on both objects wmku7 1zfn5 8 2)5rojnh2qivnare doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of o 3jx.yrxh54nq je:-jxwi 6. cF on each other. If the charges are:j5y.-re4noxch3jiq x6.wj x separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eac57e n* tk bl ngd5fp3/gon,-dch other with a force F. What 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 to one-fourth its original value? The force is now e 5dn ngf53/ -l*dotekbc7pn,gqual to

  An electron and a proton are separated by a x ,)e*i cko) tpt 7ab0sdjo),87vwwf cdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is place,ctts b0, w7ad7x j)w evcfik*8 )oop)d next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m0m ij z.ut.5lk. What happens to the magnitude of thek m.ui z.j5t0l force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distan) c(zow) lhp,mce of 1.0 m. What happens to the size of the,)olphwmc ) z( force on the proton if 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 7h m /(wfomm3upoint charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force f3m ow(h7m/um 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 of1 iwm wcsugx l00l*cp;js .13d 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 of +Q placed at o0j0wxw g31 .uims1ll;s d*pcc ne of the other vertices?

  Which of the following is not a vectoric/ ey +yx6)k4mw saa9?

  At twice the distance from a point charge, the strength of the electric fi9q(ptcvcy 2n/33ar) l;5dbzqd/esnyeld

  Is it possible to have a zero electric field value between a negative andq9j :hsomx4g z; dzu;6 positive charge ax;j q s:mh6ou;4zzdg9long the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charges2 1a.5couj5lp-faw/irf 3ryd along the line joining the two ch-flauyp 3wcdr j5 r1i o2.5f/aarges?

  Electric field lines near psitive point charv z i+7,l j3gf.t5elonges

  The electric field sh079l fldp8r8h je 7x:r )slabm fwy5,eown

  Can electric field lin8it:o/aaofo 9gix2fy2s7i s l egpd4-t0mh 1*es intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a6x7zvql3xh l: uniform electric field. Give a statement concerning the electric field in the block's ih:q3z76l xl xvnterior.

  If a solid metal sphere and a hollow metal sphere of equal diam mmo)mfu mq9*u92 d;jjeters are each given the same charge, the electric field (E) midway between t*o umfj 2;mm9dju 9qm)he center and the surface is

  A cubic block of alummz *9uh i8huld1evuj).*z5pui p1 xw- inum 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 bl)die* hx19 - 1 pulupzwi85uuhj* m.vzock's top surface?

  If a conductor is in electrostatic equilibrium near an eptq( 2xjg2-j ylectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is pj8+m(zhhrn (ex fz9tua3v6 + grounded. As compared to the case without the hollow sphere, the electric field at a point direc+ zhv3uj6r9+ mzphfen((x8 tatly above the hollow sphere has

State three properties of conductors in static equilibrijaw5+d yp ab1+um.

State Gauss's law.

  The charge carried by one electron 2b63 vwq/;3z a olvat nv3:ry8r4zhwj 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 +28gki3 w6fg0sph+yxv+)) pru etsyr ,. .00 mC. How many more protons than electrons does this piece of plastiuyw v8h63gy,+e srxt g0kp) +)fpr.isc have?

  What is the charge on 1 kg of prot.gs0d)e 5) c 8fgbrjstons?

  An atomic nucleus has a charge o x agli;:o;elg hzze5)xi3(/wf $+40e$. 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+.z nd6zetj 8r3 k:xvk.5b ws )e0qfbe .:ydav 2.0 and -4.0 mC, resp z:w8q+0zxya)st.k:36ek .n fr 5devd j ebvb.ectively. 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 betweekug489fn d -nun them is 1.0 N. What is the magnitukng 8ud-9fu 4nde of the second charge?

  Two 1.0-C charges have a force between them of 1*9 /r 2frs-lg tby: i6aa/vw8cpclqb4kk) vp9.0 N. How far apart are they?

  The force between a zaq,v ffbjm 6(7 dr.z.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm(pvktk)e po78dvzw9d. jz3 -o apart, experience a 1.0-N force. If they are moved to a new separat9ez)-k7zpk d poo. 3vwjd v(t8ion of 8.0 cm, what is the electric force between them?

  Three identical point charges ofqu r-lw:1 ;xox 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 magol;qu-r xx :w1nitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the xz5cl, n24 q)8fhj o0zbyweam, bxeg21-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 th)w8fo,q2 ,z2b4bgy0 az ejn5 m1exlche 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 * t9 -7lhdhrvv= 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x vh9v7-l *td rh= 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 secc69 /ej+sqduy v-nd.yond point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0-ucdd yqj.vy+ne/s6 9 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 d+a3cu-c) ) bix2zj or= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forcjo-cc)a z +driux2b)3e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qytl8ns ;-bx)5pld(z;mr iya47* -bal yk9jel2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction- a (yl;4 - rpl* lzal7e8tbmn9kyys ;5bxjdi) of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC ares,l /f7ggd1 kfdxk6 5y placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of/gsfd,kfx6d k 1l 75gy the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q a* qy*pn2j 54wh,dc yiand +4Q, which are separated by 3.0 m. At what point, on a lini c5*4dy,phyjqa*2 w ne between the two charges, would 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 at the origin and a u, 9n(nx-e xpt+9.0-C charge is at x = 4.0 m. Where on the x-axis can a thirdexp(nnu-,9tx charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = slh *x e,)2mdv2a. Where can a third positive charge +q be pl )2hm s*edxvl,aced so that the force on it is zero?

  A copper penny has a mass of 30sy v60v,motvyt. a0v.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 fow*x ty bx0f/67b+c saqriti2/ rce of gravity by the attraction of a fixed proton some distance above it. How f /x6xc 0yqwbif*b+as 7/i2trtar above the electron is the proton?

  Two 0.20-g metal spheres are hung fg2x,hu,qz *l t- nk+lsrjh.*o rom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces.- j* ,rnxq +lut*,shkzl 2goh 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. 59 zvbiu a80fnf*0 obt What is the magnitude of the electric field at a distance of 1.0 m8fnfou9zt bb0 *5vi0a from the nucleus?

  What are the magnitude and direction of ts2j s69 (g- rxdvtj:vhhe electric field at a distance of 1.50 grj xv6 :(dhs-j9st2v m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni2 vmzhfb0x7g 5tude of the elec 7bgmz 0vf2x5htric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directl- 8izei3b kd8ion of the electricbil d8ie -8z3k field?

  A 5.0-C charge is 10 m fk3y (bi 0fja*6 zby(cqrom a small test charge. What is the magnitude of the force eb(a( 6z 3jiyqck0fy* bxperienced by 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 sepawsoh tz,j9 b;zmq tf970o x/n6rated by a distance of 4.0 m. What is the electric field wzt nsbqt;m6x0f99ho o/z,7 jat a point midway between the two charges?

  A 5.0-mC charge is placed at 56a8s z beghu44njor:the 0 cm mark 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 marh5ze4gs8ja: bu r 6o4nk?

  A 5.0-mC charge is placed at tapjy8;mfjxn3 l1f,1 khe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line 1f3xf8jm k,pjanl 1y; joining the two charges is the electric field zero?

  Two point charges of +3.0 :cnhi t324lc 1vtp7k nmC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between742 cl n cpv13tn:tihk them?

  Three 3.0 mC charges are at the three corners of a square t8 k)j1c8d8vlx:c; gg y) wwvgof side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric 8; xvgw)jc l:gt )wg1 8cydv8kfield at the center of the square.

  Consider a square which is 1.0 m on a lq q .d1j8rhxm 9q2k0mside. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); h lj8d190mqqmqxr .2k +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 ml99uy1wau jy+a ,u c)q88 eezaC when it is placed in a uniform electric field. What is the m8 y l )e1a8cu9uqz9+a,eaywjuagnitude of this electric field?

  A particle with a charge of 4.0 vsnwh +8 -uac0vdn .2ps) 4vrmmC 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 ij:8e.dsxzfm1 u6ej )n s placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball jmz.)xf8suje1dn e:6 for it to be suspended?

  A foam ball of mass 0.1nk:j sv(il8 s- c.:c rxl(dxx.50 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field:v sxsx(dr.lik8xn: lc.j c(- , and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radi1.jz1+ 1cdwh ril s q6v7ltlm8us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from6 s ijt71ql811rvdhmz+c llw . the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elec pao0;lxt26 vwtric field 6.0 cmvtp;wx o20 6la from the center of the sphere?