State the law of conservation of electric 718.dyl dx)q wu:ugpucharge.

  Is it possible for two negative charges to attract each oth5) h,twx+8uyx :sou aaczxj*3 er?

  Is it possible for a positive and a negative charge to attract ezexknpts b /m ro,m6t527 75mwach other?

  A glass rod is rubbed with a piece ofzdn6 qsevx (rc3c.2wixa ; 2m5 silk. During the process the glass rod acquires a positie35cs nav(x 6 w2rzxcq .m2;dive charge and the silk

  A proton carries a

  The model of the atom shows yvvo-nf;kg19 a

  A neutral atom always hasxrfmc 3x(w6, :1g hqsp

  An atom has more electrry0 f8hjsop6.b+n4 g ions than protons. The atom is

  Materials in which the electrons are bound very tightly tu.k : 0j zj-ql*uld0r0u/msolo the nuclei are referred rdk0sj zll. j- ouul*0m:u/0qto as

  Materials in which the electrons are bound very loosely to the nuclei and cy)/n+iiikkfk0/ttns)ghe , ,an move about freely within thekth)inn)g,k,/0 /yf+ stiei k material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Th3pnyq */c ,x xy+9 oif(h6)qlcgu;atoe en)igocl 6x yh/pf ,au*qqt9xc 3(yo;n+d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B ih-caotfpv;4l x 82 n1k 3xer8ms neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statc r nmov 84p1l2t hx8f-k;xe3aement is correct?

  How can a negatively charged rod charge an electroscope positivelyndv1x*iout)irzb, x3+ n1 kl9?

  An originally neutral electroscope is4ov w01d o3t0 s -ra;oagijl7o briefly touched with a positively charged glass rod. The electroscopj-soo a ig43od l00awrv7;t o1e

  An originally neutral electroscope is groung/k k;p4ai ,nwded briefly while a positively charged glass rod is held near it. After the glass rod;pa,iw4kgnk / is removed, the electroscope

  A positive object touches a newx qil m12.px8xsblx+a) mz(a6(qr5uutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?amu lxr( w)ixx21qa5z+x8.pbm( l6qs

  A large negatively charged object is placed on n*(h5b1k ,y g,nmmeecan insulated table. A neutral metallic ball rolls stra*5 1h m mygeb,nncke,(ight 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 charge on each ball?

  Charge is

  What are the units of the Cvk; dn;agpg2 /q9pxg(bg,t5 v oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separm 6m pfh(eud2s-mpddp*s2o(0 ated by a distance d. The first charge is larger in magnitude than the2pfsp2 m(u *d6sh(0-pd me dom second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near 226-(mizq21 qptqe6bjc ucb reach otpj 26cbi ur6z2tqcqe -(b 12qmher 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 charges on m vzi:e-(/ eveboth objects are douv(-meize e:/vbled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual abg lqnd3n.// /fopc; dttractive forces of F on each other. If the charges are separated by a distance of d/3, what are the n/gndnf/lo.;pdb cq/3 ew mutual forces?

  Two charged objects attract each other with a force F. What happens to the forkf x0d4d wg, r7gh.ur1+xvsv(ce between them if one charge is doubled, the other charge is tripled, and the separation distance between their ce0fs ,74ddvr ( wxg1ukg+.xr vhnters is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distanc1tn f19pf kvb:e of 1.0 m. What happens to the magnitu kpf n:1bvft91de 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 happens ((9r d jg+8 si .m0g-gjiucqweto the magnitude of the force on the first electron if a second electron is c-0j jg9si(e.igq+g8 (umwdrplaced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens t,wxe 6jqg m 3sl8bf;y;o the size of thejf;3x8l qsb6g,me wy; 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. 2t f6/t.vsjiyq :e i+jWhen 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 thi :stviyj jq/+.t26fe e 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 triangle. When4wkmm7+en: v-8oipk -9dbwad 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 e8dw- w mk7moabp-4:+ idnv9k 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 a4gcjkwx (3qnn u 01bk; vector?

  At twice the distance from a point chargeevltpu2) d) 2e pwgk0zwo9/1r, the strength of the electric field

  Is it possible to have a zero el ,5g 9.jkmawolectric field value between a negative and positive charge along the line joiningl9owm.a jg,k5 the two charges?

  Is it possible to have a zero electric field valx ,umhv tksca8a un0 o:li6 *4noc7oh-6)fe:cue between two positive charges along the line joinaio- c:s,onc:t*)uc 6l 0f48xhak6 vnh7 eu oming the two charges?

  Electric field lines ue9ip:tg01;k fmq8 oa near psitive point charges

  The electric field shownu0np8ck - yk4h9eix1 d

  Can electric field lineow3dq,dt i*u-on db721pr 7 zncpa-)ls intersect in free space?

  A solid block of metal in electrostatic equilibrium isg+n.s zq:qfi ;plt7t7 placed in a uniform electric field. Give a statement concerning the electric ztq7qg7+;slif. nt :pfield in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dca;bji z1b 2k4iameters are each given the same charge, the electric field (E) m kcz b2j1b4;iaidway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uni wuw1:emx licc; t)r.*form electric field is directed straight upward. What can be said concerning ertwicx *.:w1)lc; u mthe charge on the block's top surface?

  If a conductor is in electrostatic equ5ijr8r5:w-z5wmc wz cilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallir ,ozj( 1umzg.c sphere that is grounded. As compared to the case without the hollow sphere, the electric field at oz 1ug.jzr, (ma point directly above the hollow sphere has

State three properties of conductors in static equs weve6edx) 0fl0uy1/ilibrium.

State Gauss's law.

  The charge carried by one electron i(vggp y,0q tbk3 h-/yts $e = -1.6 \times 10^{-19} \; C$. 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.16t e3y -uaa:ejx l-wds jo).g How many more protons than electrons does this piece of plastic have? 6j)ajl-sw o gta.3x-yeeu:d1

  What is the charge on 1 kg onb0t4c : zzan 4u(p;psf protons?

  An atomic nucleus has a charge o wyjhf7ky4g8lt* *f n+f $+40e$. 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 va)rwwe4t8 u:ht lues of 2.0 and -4.0 mC, respectively. W )tw8er4 wu:hthat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargd cw92rgo2y/2m8 thlxe, and the force between them is 1.0 N. What i2ywc htd8r gx/ 22lmo9s the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arepne;cn /k7f po bzm.7h/elu/nk 61fq75 .b sme they?

  The force between a amhgvl(gpg rr-n8 9g .nc,8v)$30 \; mC$ 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-N force. If theye6as uqgzmp8o8j1., e are moved to a new .u 8 s aegoze,8jm6q1pseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first /lqko +*wc3r8o 2aanh+ pjg0hcharge 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 w3jrhh 2o k08ga*c+ +lwno/qpahich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cha390 t j9dz+v keke4tqrrge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = eq 0t9j9kt+z34 erdvk50 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 locat3 f6)phszrg (qed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC atz3)h rg6 qspf( 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 iswpxsg m-0oc-y 67oy69- chyk x 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 electyyoho- 60ypxmgk7-scw6 x - c9rostatic 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-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =2hs5+qj c .jtuok6zk, -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net forc2qus zk6ht ,j.5 o+kcje on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 :6gturaot(c4 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force oguca4tor( :6t n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the 1v4e, -zlr.fq9fiq)wv hqedt +o.z8dvertices of an equilateral triangle which measures 30 cm on a side. What f.,r )o qq. ze9fd84tvh+z-viewd ql1 is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pt7zh p pv*a, 5vr10mfgoint, on a line between the two g150v vpzm* pr7af t,hcharges, 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 +9.0-C charge is at x = 4.0 m. Where .2uh:+mtev t6 axcn: zon the x-axis can a third charge be placed so the net force on it :ex+h:zt2c 6tm .unv ais zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whcg;r4)e zt+0yt; z6rkp wta 5/ oubzx9ere can a third positive charge +q pg4 ;utk c/eoz)y t0;axr+b9z5 ztrw6 be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 aqvl1owqgu jz yb l-1972g8*z cl38adg. 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 by the ayi.gzm8e-ama6glb .,ttraction of a fixed proton some distance above it. How faraz86lgma,y-eb .ig.m above the electron is the proton?

  Two 0.20-g metal spheres are hung f u tx*9ao hzv83grx7g;rom a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces tz gvhx 8 3*rx;gt9ao7uhem 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 the magnitude43r/3,pzk:b u npbyzj of the electric field at a distancpr 3,z 3jbby4k:pzu/ne of 1.0 m from the nucleus?

  What are the magnitude and direction of tb+ (9d( ykuyf -yp4i65 qwmlqyhe electric field at a distance of 1.50 m from a 50.0-nC charg59ymfyq( -uy(y+i4bd q6 lkw pe?

  A 5.0-C charge is 10 m from a u2i gva0lquw gc:p9yk15,r1asmall test charge. What is the magnitude of the electric field at the location of the test chargey cu1i :lkarw2g 9a0 p,v15uqg?

  A 5.0-C charge is 10 m fromud4)ex/( e9pa9drg j k a small test charge. What is the direction of the electric field?rdk/x99jged(pu e) a 4

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th8;:bz4 fnh vw(fw:lzge force experiencew :h8z vgn:b(fwl;fz4 d by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Cx:seyx gd i h3.5z /ge6vxhi)c4, hxy4 and are separated by a distance of 4.0 m. What is the electric field at a point midway between thze hxx 5 ,eiiyx.vcg 6)s4y hh:3dg4/xe two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter st4vh-,h332.mij z o .jjjzsn wxick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marihnxz.3-jw2z s j3ov4 .jj,m hk?

  A 5.0-mC charge is placed at the 0 cm macwz cq767qu ,rrk of a meter stick and a -4.0 mC charge is placc6 7wqu 7,zqcred at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +u+q3smjsz+ ,09ggiri 3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fiejg i +zr,q+s 09smig3uld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thel8ie( jlx lf6:19g7:an8.colvp aejo last corner is occupied by a -3.0 mC charge. Find t6o7c9v1i gn o8laelxjap.:f l(j:l8 ehe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charj- -v o;q xkh4*ydf2e+qiz bb3ges are placed at the corners of the square azy2 jidv 3bqf-4eb*q+-x kh;o s 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uorpe i2tn;(n06 ddem)niform electric field. What is thd;d02r)i6neeomp (t ne magnitude of this electric field?

  A particle with a charge of 4.sj1 hkm0d 3ow .m 9hpr:22gnjx0 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 electric field of 6000 N/C pvz* 5z xc1dd)d+hlbr8ointing downward. What charge must be placed on the5z+ rl*bxdd8)dc vz1 h ball for it to be suspended?

  A foam ball of mass 0.150 g carries a z+k+vb* u+fsdcharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are+dbk+su*v f z+ the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.dgg8 xf1b,x. a0 mC. What is the magnitude of the electric field 5.0 cm from t d,xbx.1ag g8fhe sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge x f* 57 )xmqevpf53shpof 3.0 mC. What is the electric field 6.0 cm frox*q73vs) effxpphm5 5m the center of the sphere?