State the law of conservation of electro,rl3,x8e pwe,tegj o5 58t4mgl cw)w ic charge.

  Is it possible for two negative charges to attract e, 5k ri p;z:hyn/ zoemzd44:kdach other?

  Is it possible for a positive and a negative charge t y:6jytmid+j d7 5l) cp+zevr/vydjwno1,+2io attract each other?

  A glass rod is rubbed with a piece of silk. During the proces2iac++t3lupml/h h ww -*ucj) s the glass rod acquires a positive charge and 3wu lci*hhuc2+tm-pa wl+/j ) the silk

  A proton carries a

  The model of the atom n,oc083x.pg1xl 5m a mkgf,mvshows a

  A neutral atom always h1x3 dnp)mokx uzj/3c4as

  An atom has more electbmtydud(hl gpo-(2 98rons than protons. The atom is

  Materials in which the ele o/6lfrpo*k 7,qogl:4+k mvhzctrons are bound very tightly to the nuclei are referred to hlg,74*+mk 6qf: oo/ p zklrvoas

  Materials in which the electron5 2miqp./ry+zba9 tqns are bound very loosely to the nuclei and can move about freely within the material arzq/+n y9qmti 2ap.b5re referred to as

  A negatively charged rod is bx4wl.-4wvvfzt fh0 : zrought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rwzz-hf lt :4w4v v.fx0od will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a).smcxv v 7qa b.9gaf9bf*k:mh*/ ykore placed near each other on an insulated table. Sphere B is bri.vs ho*vm:.9y b f9f)kkg* 7qm/cabxaefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge heg jw-y1 ha pr j+4 9bccxg1m8qdmnwz,21,c (an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chax iu+ qi (brbza(wxf5 f7imq,:-t:)dw rged glass rod. The(t f7f,:wd (imx+qzau) w:ibbx i q5r- electroscope

  An originally neutral electroscope is grounded briefly while a positively .sqvupt6*saiu / (n3tcharged glass rod is held near it. After the glass rod is removed, the electros/ tqn6i a(.3vuutsp *scope

  A positive object touches a neul 88g:i )sih(buu)njdtral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What)il8 (juub d sn)g:h8i happens to the leaves?

  A large negatively charged object is placed on an insulate*p896 mmb tgeh1 tsmd.d 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 negmdm6*m1t8p .b9 egshtative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulm ,0qb(sl h6rkomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a diwv:x2 0v vnz3qstance d. The first charge is larger in mnw:vx23q vv0z agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed d1w ke2p 4+ ,novvtf4knear each other on an insulated table. Which statefwvt+k ,2pvn1kd o4 e4ment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. /glxd urqf+zaoa9 7sd/.d yxj 1;d)w8 If the charges on both objects are doubled with no change in sy;q8d7 j zdgudo)a+r1wxds/x /9 fal. eparation, the force between them

  Two charges are separated by a distance 1 qtpw* ur(ovhw* lq*ak 5(,4ezt+ijfd and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are theik,1 j5afwz*t uv*r(+lp o4wt*e(h q q new mutual forces?

  Two charged objects attract each other wil88x4 lhwz*fwth 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 itsl8flwh4 *xz w8 original value? The force is now equal to

  An electron and a proton are sl* rsi8xtncsv:* 46u6em 5mxf eparated by a distance of 1.0 m. What happens to the magnitude of the force on the s6xuintsmlx*:ef4 8c* 56 vrmproton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a uw3v jc35uh c5th 14htdistance of 1.0 m. What happens to the magnitude of thet chuucw33t 5h hv15j4 force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated+kq8 huptz00iqa k1zs v4 9kol8tbs0. by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prkzts8zi9h 0p1o4kaqqkut0 sb.80v+l oton?

  A point charge of +Q is placed at the center of a sqn n 1+1eb /-zrpj mvt 7h3k,w2rgs2voxuare. When a second point charge of -Q is placed at one of the s rszn2/1vjnx, vpk3 w2e+hog-m7 t1br quare'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 charge at the center of the square?

  A point charge of +Q is placed at the nj0.v u3yips 0centroid of an equilateral triangle. When a second charge of +Q is placed at one of sun yp3i0.0vjthe 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 p ,q: frz+, cxbew2l52k:diyh is not a vector?

  At twice the distance from a point charge, the strength of the electr z3.( p f0a t50wqn j.,.wllraj8fqxtxic field

  Is it possible to have a zero electrn2o z +srt(s:ric field value between a negative and positiv rtn :2os(+zsre charge along the line joining the two charges?

  Is it possible to have a zero electric field value betw8rnl, dr( (igieen two positive charges along the lin n8l i(,(gdrrie joining the two charges?

  Electric field lines near psiti1u laorz 9csit6o q.42ve point charges

  The electric field shown *tl7c 5 blq ) ywqe2 ,el)uftv)mq*ke3

  Can electric field lines intersect in free spgpobl+m) )se q (2+hrsace?

  A solid block of metal in electrostatic equilibrium is pv jij(,c+nmt .rcslt:2 (d s)claced in a uniform electric field. Give a+cjs,:tv n d2clscijt( (.m)r statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sph m x8qz apl-:3a/9uiq :toc2byere of equal diameters are each given the same charge, the electric field (E) midway between the center and 3 t9-q za/y o2 lxmi:u:bq8pcathe surface is

  A cubic block of aluminum rests on a wooden table in a region where a un;kdvdeht 0g+ x /ylue:;13e f7 -cojbqiform electric field is dirtquy; ch db:e7f-dk/j+x30lovg; 1ee ected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic ei fgs3h r om/lb7mg )(-ew-z 1if1ga+dquilibrium near an electric charge

  A positive point charge is enclosed gi. dkruz 7p,jb-qd-. in a hollow metallic sphere that is grounded. As compared to the case without the ho7.,du.r db-ipqz kjg -llow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsuo r17- moy ub+y.cxo9 in static equilibrium.

State Gauss's law.

  The charge carried by one electron is a5y*t4p/ m8ql0yw 2wk,hff nv $e = -1.6 \times 10^{-19} \; C$. 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. vw*tuhus hg yn8 3o)*7)prbv7How many more protons than electrons does this piecswb) v7nh3yuv *p78trou*gh )e of plastic have?

  What is the charge on 1 ki0x6lyekds2g svf)q- d6vlrrg:r ,) ;g of protons?

  An atomic nucleus has a c qr .v:a khw8xr)bpfi;6*:fmm harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatedma9:v5p (+r8r1tb6m zdowbt x by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectib6: 9 8tmom51( rzdvpx+ rawbtvely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from:8*cry(wovhkug+z( o a second charge, and the force between them is 1.0 N. What is oro +yw(k*cuh: (8vzg the magnitude of the second charge?

  Two 1.0-C charges have a force between ,.mfon2a vdk*wor (s ;w)(yjj them of 1.0 N. How far apart are they?

  The force between a 5qzs sgm5b6j*$30 \; mC$ 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 they6l f/y-g kj1a n+qfag, are moved to a new separation of 8.0 cm, what is the electric fo+nf g/ -,q1a 6jlkygfarce between them?

  Three identical point charges of 2.0 mC are placezgyuwj. :+5tt5 -ba dfd 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 magnij+ fg.w tb5a ud-:5yzttude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cc:ln)p( i6dt j zs3 swlya0.6sharge 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 electro)w sd0c3 z.n:api6ls (styj 6lstatic force which acts on the charge at the origin?

  Three point charges are ls*l* yfiz t2ut1x/dv(ocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = z*tu(i xfs* 2/lty1vd-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 secon;g5rw3g o 1l(p4rmm oyd 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-left corner or3 rlwmg4p o1(ygm5;?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -aio9*d- gje wzje2v8:1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, ao2d*9zivej: egj- w8 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC ic lsuy0 u 374e7o(dbuns at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction ues 70uc(bo43nu 7yldof the net force on the 5.0 nC charge?

  Three identical charges of ng1x:(ltt-8n ez 7odk8 jfev-3.0 mC are 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 on any 7okvn jtxgn(8ez f1dt8-el-:one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.onb zta8b :d,h mtu1 ic)*xbw+b,3( au At what point, on a line between the two charges,1bhzi) * 3wutxb+:a au,8 mn,(obbdtc 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. Whereh *4bh1 l*zyynq/ 7zew on the x-axis can a third charge be placed so the net f/q h1bnyzly7z*4*wehorce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. 9j,om s .fhkz 7rddcu-i)a*)g Where can a third positive chargeu,*zog)a7idk h d-c9m.rf s) j +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totay qpu98y kad*pz(rc72l 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 forcq ynx02yua6j 7)zk4ad e of gravity by the attraction of a fixed proton some distance above it. How far above the elek2aa )7qxn0y4d zj6y uctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n-(du9r n(rwdyonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle budr9 (nrwd(- yetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the elect.qhkmq q2+x e.zoi2a6ric fi h+ emaxk2q. .q2o6zqield at a distance of 1.0 m from the nucleus?

  What are the magnitude and directcutzv5 (5 ht)fd4hs)kion of the electric field at a distance of 1.50 m from a 50.0-nC hd(fuk s)4h vzt5 c)t5charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mao htj ar5d*6 t-zjuoh8 0a(1qjgnitude of the electric field at the location of a uroja1h05(jh-jqz*tt o6 d8 the test charge?

  A 5.0-C charge is 10 m from a small test charge. What issy8 c,si4,rm7b2vkhs ou s*,x the direction of the electric fiecsx7bi y*shm4u ,v2,rsos k,8ld?

  A 5.0-C charge is 10 m from a small test charge. Whyjcxg/7 86xg z,jisin52(cl o at is the magnitude of the force experienced by a 1.0 nC charge placed at the loc8xgcjn,gsx2l7cy iz6o5( j/i ation of the test charge?

  Two point charges each have a value of 3.0 C yc xlhm*k5 s)-and are separated by a distance of 4.0 m. What is the elecsxkcyl) 5-*h mtric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter shn5kbzkw/e t2*;ivz *tick and a -4.0 mC charge is placed at the 50 cm mark. Whatk;/wbz z*nve5htk i 2* is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ay eif9:m j0j)vvc7 k-vnd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elecv ikjm)ce jy-7:0vf9 vtric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0j 7dnd1zrn /rz v+0dg5 and x = 0.20 m. What is the magnitude of the electric field at 7nddr1 5zrz0/ vjg+dnthe point midway between them?

  Three 3.0 mC charges are at the three corners of a sqok1a )mvj t l7.e*j3sguare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at themjva *o k7lj 1.e)g3ts center of the square.

  Consider a square which is 1.0 m on a side. :u8 :m(p l srkvk3ywe3v4;fje Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC3yeem;3 r v:sk 4j :8(lpwfvuk 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 uh jl n;8q:2;eb7 udwoa charge of 5.0 mC when it is placed in a uniform electric 2hwqjn: l; e7u bd;8oufield. What is the magnitude of this electric field?

  A particle with a charge of 4.mnt -lf4t4 ptq;a c-,o0 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 msx vl ;d 9:q0 1tdhvzl,m4f2mfield of 6000 N/C pointing downward. What charge must be placed on theqxf1m dz4m0,:vmsd l2tv 9;lh ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCjgz9u pc4wt0 8uib )3s. 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 electric fpu w048tg)ic 9jzsb3u ield?

  A metal sphere of radius 10 cm carries a charge of +2.xaao 9, w1 : vn(bpobmkjgzt*p 12e,o+0 mC. What is the magnitude of the electric field 5.0 cm from the sphe+o jg9o*(we t,b pk1pmz: 2,1oaxva nbre's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elecjigemx;,wtg e8a ,z,5tric field 6.0 cm from the center of the sphere?,8g a ,xw t,ie;mzje5g