State the law of consl:5i q fi1.me5u ktis(ervation of electric charge.

  Is it possible for two negative n9 vi i4c6o df9vuru.zz40k+mcharges to attract each other?

  Is it possible for a positive and a negative charge t yrc l4ejl:;av5d1zz3 o attract each other?

  A glass rod is rubbed with a rmm4 /suhn/k:piece of silk. During the process the glass rod acquires a positive charge and the silkm/nh kmsr :/4u

  A proton carries a

  The model of the atom shows t wa)3t,*yx2;khsg1h8dpj hj24g ksb a

  A neutral atom always kozs36k y6br*ks s-k(has

  An atom has more electrons than protons. The srui;gx:(; cq atom is

  Materials in which the electrons are bound very tightly to the nuptp1(v, qoximo q-2-t clei are referred t,pq (qi--pxt 2m1oov to as

  Materials in which the electrons are bound very loosely to the nuclei and cafu+3a. +dfwz+ bzw1ih n move about freely within the u whz+bff+d 1 ziwa.3+material are referred to as

  A negatively charged rod is brought near one end of an uncharged metq+ugm28m +:+.e oj9nctgre w pal bar. The end of the metal bar farthest from the charged rod wu+et+ :r9w m8+j 2gmoc. ngpeqill be charged

  Sphere A carries a net positive chargecoa b3t6sf* m7, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct7ta bmo sc63f*?

  How can a negatively charged rod chargw1 . l-x.gp8sckjp /lle an electroscope positively?

  An originally neutral electrosco2qh*be)qf1nuye2d.x v( 9ct bpe is briefly touched with a positively charged glass rod. The electrosccbfyvd9enq2 )t1*q. x 2(eub hope

  An originally neutral electroscope is grounded bri*:xy57jnez7vwh8g b i efly while a positively charged glass rod is held near it. After the glass rod is r je 8iyhn: zxv77gbw*5emoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separak0 .y2wvg 1ppote. Then a n w2yog.pv 0kp1egative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut tsxvhxj )f*bq)61p8vy7k) 3*pxolkxral 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 f3k ) x*yqxo)l 1tb6skfppjvxv 7 )8x*hirst 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 h,t+:alcg0zfCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The bdjl95s,-r,jgl2k s7xtlk(g b by 5.i first charge is larger in magnitude than the second charge2b . b5xg9d ( ,tkyj sgllri,lj57bs-k.

  Sphere A carries a net charge and spher i +bhnmmc .gwzpa4gj ,-9+ke9e B is neutral. They are placed near each other on an insulated table. Which pbnhg g9 4k++w9acmme,j. z-istatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ctm) i7o. :00ksmuao pq736iki3 fpqmiti95 kpharges on both objects are doubled with no change in separats uqkm7ot6 tqi50m)i.ppkf mi39pi 3k ai 70:oion, the force between them

  Two charges are separated by a distance d and exert mutual attractive force-vdti 0wgt39iwo -o a:s of F on each other. If the charges are separated by a distance of d/3, whv-wiotdi9w a3gto: -0at are the new mutual forces?

  Two charged objects attract skjp/f gq(7.yop4fy 8 each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled,4p. 7q8fs(yf/pok jgy and the separation distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are/ gmsrryh 1k19 separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the frh91rm g1/ yskirst electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh1kzz9 grh.qp6c6vr)b at happens to the magnitude of the force on the firbr 1)p cgr6.kv9 6qzzhst electron if a second electron is placed next to the proton?

  An electron and a proton ns+tf q*7rfn1v xx1te fl7 3p+are separated by a distance of 1.0 m. What happens to the size of the forcexpft+ 1tq*e3fnnlf1rx 7+7vs 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 zt5v 1f/f6o vzq ei0g,p*c3lzpoint charge of -Q is placed at one of the sqv1*/ev35 ,ct 60ofgzliz pq zfuare'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 centroid of an equilater p z/ q7p535+lzezm1v4kxcl wzal triangle. When a second charge of +Q ispxp4cm15zl73z ve 5/lz+wqkz 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 one of the other vertices?

  Which of the following is nn. g2 jlagv;7l;cl6rx ot a vector?

  At twice the distance from a point charge, lbxva(2 iq ools8:o7. the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posgn6 ; q)34*g kddajpaoitive charge g dkoan*p34gja)d ;q6 along the line joining the two charges?

  Is it possible to have a zero electric field value between two positi bvd9nq*ar9k,*qoey*ve charges along the line joining the** 9vd qka ny9*eboq,r two charges?

  Electric field lines near psitive poi4vm uj r;mq2x8nt charges

  The electric field shownbs* :h+8h wtyg

  Can electric field linevf; e7mlb p,6n.l i:tfs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifornz ).)tq1)j9 fdurjlw(n: w jsm electric field. Give a statement concerning the electric field in thq. )1wws()juj :nrtl )n9zdf je block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each ib ppp2y*+x: r rbw(j8given the same charge, the electric field (E) midway between *xwrp+r:ppb 82 y( ibjthe center and the surface is

  A cubic block of aluminum rests on a woodqoc. ;gt bx9s v2+o/ zy4at2gpen table in a region where a uniform electric tys2 /2g.ao;b qztvp9x+g4 ocfield is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n */rzxe/ usquk)12i f7cm1blw ear an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that ppnfj4p57m)(w7 /c egokce5 t is grounded. As compared to the case withopkt n55g p/( fwc7eeo 4jp)7cmut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of h* dus ao6nx6kb6oa43conductors in static equilibrium.

State Gauss's law.

  The charge carried by oa gnh(t,vwfb4zi/ 3uz27q*a m ne 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 charwukb3d6 v(d 8nge of +2.00 mC. How many more protons than electrons does this piece of plasticwuvb(k dn8d 36 have?

  What is the charge on 1 kg ofe5 g )sx iv(v3f,qe-hz protons?

  An atomic nucleus has a / l/)8h+y+iyvs kj zs x(2mzw nqw+t4acharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separa2kv:n w8 kpto,ted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitudv:wnto8p2k , ke of the electric force between them?

  A 1.0-C charge is 15 m from a second ch afkgu2 g4-8zzarge, and the force between them is 1.0 N. What is the magnitude 4k- zg82a fzugof the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are ,y)wya(v-v-:m cczpfs0o b1 c m2wc9qthey?

  The force between a g-4 dzq ;e:*cg6mpfwc$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2ywcfaygd))em3rtkz:x+ w50 ; .0 cm apart, experience 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 dxa ;ykw:5+g ter)my)wfzc3?

  Three identical point charges of 2.0 mC are piqj3rgo l n16;y0o /vklaced 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 magnitude and direction of the electrostatic force which acts on the charge r onvij61logy/0q;k3at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placer07r:pd-h- bn9jr bxejo7c+r d 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 m+9hp jx7-jrob70 nr ecbrrd:- agnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located awl1s 2 o b bvl)psfl9(i8sr*o/qgo -1xt 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-mC charge/sl-2w qs plo os(lovixb11*grf)b 98?

  A point charge of +Q is placed at the center of a square, anhycy(4 v+/a8 k9;rwhy9xa ebtd a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.eaha4w ( xhty99/+kycb yr ;v80 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 = -1.0 nC is at (0, 0.10 m); Q3) v q+kr 8)skajbtfm-. = 5.0 nC is at (0, 0).) -+. k mrqfsbaktvj)8 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 = -1.0ode1i m2q7b i p:d;8-xm1spqj nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0-jioqiq1p 2dx;7 dm1:mbps e 8 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatf:q zw yr;zbx*81ik ;teral triangle which measures 30 *bf;wk ;ztqi rxy 81:zcm on a side. What 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 pu +3whmxiw m28y x:bhqj3/pb *oint, on a line between the two charges, would it be possible tmj *hwy8/:3q x u wbm3ih2pxb+o 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 o-/kdv cs;; hkb*y.wmzn7ol p* n the x-axis can a third charge be placed so the net force on it ;k;* k.o pslvdy7-nh/ bmc*wzis zero?

  Charge +2q is placed at the origin and charorsgi/mzx- w (,yp a0w7rm9b .ge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it rgb (z mox7.,w/yi0-rasm9 w pis zero?

  A copper penny has a mass of 3.0 aum .u 9zx-x*cg. 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,pdwadojr a c/jgzgvy (;6c13ds* n*9 the attraction of a fixed protonggcy 1s ndraza;3, dv cj( /w6j*9d*po some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from bg8pl1v7 nw d(*7 fbortm0g3ta common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untlb* g38gv m0 rn1w7d(7p fobttil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a/ sw i6w;ga5sz charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucl5ws/i 6a zsgw;eus?

  What are the magnitude and direction of the electr3-/fb*w:es h ivcdx7uic field at a distance of 1.50 m from / x73db *wvisuf-c:hea 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What ynpmi br2+zk; 5 /n9mvis the magnitude of the electric field at the location of the test cha5/r pm z2kbv +9n;niymrge?

  A 5.0-C charge is 10 m from a small test charge. Whatbbjxc5mw5 1qod6 3+p v is the direction of the electo153db6b j5vxm p+wcq ric field?

  A 5.0-C charge is 10 m from a small test charge. What is ; dhp+vq:mh t9pcxb:1the magnitude of the forcep: x vhbpt+91; c:mqhd experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value oc zldlr0kdr;+kro0 2j31 g)qef 3.0 C and are separated by a distance of 4.0 m. What is the electric field ak3lrdqr+c10 )jle zkd20ro;g t a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm majjn(tnl .b)9pf5l *abrv q-rv )n8f6urk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field 6j-f.) j tu *(bfvn)n9ar qp8vrllbn5at the 30 cm mark?

  A 5.0-mC charge is placed at the n+ 8pi0 )iiu np yj)vnx37dt6m0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on m )ip0 3x7np)dy8niijnv6ut+ 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 = 02h1 i/py +v1gy :jecvv and x = 0.20 m. What is the magnitude of the electric field at the point midway betweey1 +pvyg:vev/1j ih 2cn them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. -x q.*xgb gp;znttb-k 9r9p1sThe last corner is occupied by a -3.0 mC charge. Find the electric field at q b;bxtg1x rp9 t. k*p-sn9-zgthe center of the square.

  Consider a square which is 1.0 m on a si m /2n+ru ,izc:te3;mz.iqwj ide. Charges are placed at 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 magnitude of the electric field at the;zq,c3m . e w/j:ni mi2it+zru square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform emsdx 4)8.+ug t s6xsmtwx9xu:lectric field. What is the mudmt4x. 6xw: g8 utsm+x)9xs sagnitude of this electric field?

  A particle with a ch :fkzfr7ydf5te4t/u:arge of 4.0 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 elect72ewj d 6vej*pric field of 6000 N/C pointing downward. What charge must be placed on the balw67e2v d*jjp el for it to be suspended?

  A foam ball of mass 0.150 g cfsll m lb*k-1 c*aq+8larries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitud alm c**sl 8k-qb+lfl1e and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is -ai(fxon-8ps the magnitu( as8opf -x-nide of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carri b5o6mm0;a odt.t6ei wes a charge of 3.0 mC. What is the electric field 6.;i0b6 awmde.tomto 560 cm from the center of the sphere?