State the law of conservation q* o ,:b3hxrzuof electric charge.

  Is it possible for two e;cmo 9 spkdaf8 ::t 5iz)t.fjnegative charges to attract each other?

  Is it possible for ax :ah x:y4m6sn positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece odwsu2q dog56xhl;8,i f silk. During the process the glass rod acquires a positive charge anoq5 s i,x;ugdl68hd2wd the silk

  A proton carries a

  The model of the atoz6 +qu ak.rslmc4.a 5om shows a

  A neutral atom alwayrjb.sm6i+p*kfs qj;8 s has

  An atom has more electrons than protow7 *ir5 qpy)1xxsnkm+ ex(x/ rns. The atom is

  Materials in which the ele,fpr:;iu: kslpo: m p)ctrons are bound very tightly to the nuclei are referre:p ir:ou;)m l:kfp p,sd to as

  Materials in which the electronsvmeggtkkh/ )5i-* jfj4 ;gr7 s are bound very loosely to the nuclei and can movert*5/e4 k;) msg fjg7-hkijgv about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T0( ) .ylfhacdqhe end of the metal baa)d.qh cly (f0r farthest from the charged rod will be charged

  Sphere A carries a net bcprd,vp460ate yqx.2 ula;5positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Be6a,apctdql.rx0 4y5 p buv;2 is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrf i8*k /sq coeyl49-xposcope positively?

  An originally neutral electroscope is briefly touched with a positivelyuis i q/xx(nh7+u2qc:sl.e - w charged glass(.cix -+: w ex2 qnq/7hiluuss rod. The electroscope

  An originally neutral electroscope isc6by8 5rk;-m .ghao9xpw 8oyc grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopyr ko -xg5m;. 9c h8aoycp86wbe

  A positive object touches a neutral electroscope, anduur g/dn63n/ d the leaves separate. Then a negative object is brought near 6d/g/ud 3unnr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively c1,hq,v4d4j8gnl8xvr 1j6 vmdth jw+ lharged object is 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, n4 mv8x hj81vd,wd4 qgjrvth1j+l6l 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 os .12n: ignbegf the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lar-;yd jg:fqy v uu9d*p*ger in magnitude than the second charge.u9:p-y;q uy d* vjd*fg

  Sphere A carries a net charge and sphere B is neut00/ vbdr0 iy-;dq izuvral. They are placed near each other iv 0drvyu0qbd -;z 0/ion an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the cha5 xlm:v,w we5zrges on both objecwzvmx,w5el :5 ts are doubled with no change in separation, the force between them

  Two charges are separated bxk -6;iyea/x5j u uyze3x/,hwy a distance d and exert mutual attractive forces of F on each other. If the charges are separa/xw-u5zeu y;6ek3 hx,i/ yaxjted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happ-nt7315n,m(, zeafvstaiusc0 v0 bn 6)bqo lbens to the force bs0)7,nov56 b1v,ui qaa3ms(nze 0 c tbbtfnl-etween 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 equal to

  An electron and a proton are separal g pdabp3)-ax-2mw* vted 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 d*m a px-lb3 gpw2va)-to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.*tpb,g6y3ysl 1cffj tk0. x7q What happens to the magnitude of the force on the first electron if a second electron is placed next t0t3*6fpcy,k7q.lj b1fx y gsto the proton?

  An electron and a proton are separated by a distance of 1.0:9 ne+i6 o4bi+icjjotv7u7rm28 udgj m. What happens to the sizeujo48iob7gduv279jn6t r ic:+i m je+ of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at txy. bd3l1-qvly o8 z))p* lqbqhe center of a square. 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 squaxbl8 ) )v p3l*-boyq y1dq.lzqre'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 /d ngr: mm*qc0of 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 dug:m/nqdc mr0 *e to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector*ch(*w 0 wdyxs11 vas99l ulzj?

  At twice the distance frm *:fq m7,k* e/yz+trv8 ahfemom a point charge, the strength of the electric field

  Is it possible to have a zero electric q8 yg o7q*qqj y-,8qi)+t lgubfield value between a negative and positive charge along th8jyqq,qt*qoyiu 7-b + )8glqg e line joining the two charges?

  Is it possible to have a zero electric vi.-lexfq6o) field value between two positive charges alo.-fi le)q6ovx ng the line joining the two charges?

  Electric field lines near psitive point chl1d- k z96j7zuu,;, oe zhy1c0 dejsiaarges

  The electric field shown nwvnnz u4w +;x *f1f:h

  Can electric field lines intersect in free spac28bv2rf( lxgh b yn l.+q;umc5e?

  A solid block of metal in elekv bskq:1cl 1:7 oj:b,zo+ m*dwm p:zlctrostatic equilibrium is placed in a uniform electric field. Gi1l:k*oozm7ld k+zw ,s: 1pcm: bjbv :qve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ecuata . 0udc(j 5o-t6cach given the same charge, the electric field (E) midway between the center and t a-o(cuud05cj6.tac the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unio8 h* pxys:oerxp 4h ,,ly8j4dform electric field is directed straight upward. Wh,yh4 4j p hes,xxdpy*8olor:8 at can be said concerning the charge on the block's top surface?

  If a conductor is in elec: atztf,7z y(ctrostatic equilibrium near an electric charge

  A positive point charge;zj6bf,9 w4sgiyu q 9e is enclosed in a hollow metallic sphere that is grounded. As compared to the ca9 j z4w,;qsgu9yi6febse without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conduuw(cb8nnq) (n/7 ucxv ctors in static equilibrium.

State Gauss's law.

  The charge carried by one elef8wg v5g:ok;9zsp k2rctron 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 h0ahvv1+tz 7g net charge of +2.00 mC. How many more protons than electrons does this piece of plastic have?+ghv17 vaz0ht

  What is the charge o-e1rp2;r5p)fwh j f)vrt+nkp n 1 kg of protons?

  An atomic nucleus has a chargeah am.*5 clsex 13-pif 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 of 2. turv-m9nfby po: 1f,s;oe0- o0 and -4.0 mC, respectively. What is tu1 o pvtseyo0m9;frbf,-: - onhe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t;hsf/l ahi6 o(gw0tss1+1fgahem is 1.0 N. What is the ag(w+6tfh 1 ;gs/1 s0soiah lfmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Nn pz-xfw,n 5p+. How far apart are they?

  The force between a jisu7s4hx3h0$30 \; mC$ 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. x/ slzdu48osi7*b5uf-k q ix0 If they are moved to a new separation of 8.0 cm, what is the electric force betweenxusbq7 0ox*s54i- f ziu8/dlk them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firmn6ck0.dmtnv g v: *znv2q v3)st charge is at thm. nnv*63kvqgv0dmt z) 2:cvne 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 on the x-axis. A charge of +2.0 mC is pjyh dt;r 4c si0*wq/ vgow:q(4laced 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 electroj(w :;o04qdt4 vsrg*h/y ciqwstatic force which acts on the charge at the origin?

  Three point charges are located at the following positions pq49cphu i-/o: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 9i4c pu/-hopq= -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 civ1 d+gg1 6(xw :aanktenter of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostg i:adg16wkvt anx( +1atic 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);/va q(rl6gg /w Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude oar(/l6 qg/ vwgf 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 9trq85;l5z fnn qti,fm); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?ntz;t58 ,q 9qlnffr5 i

  Three identical charges of 3.0 mC are placed at the vertices of ano,6 hg5;qyjbv equilateral triangle which measures 30 cm on a side. What is the magnitude of the5yb ,qo6jgvh; electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichzdk8vl*j .;)c2whprvywy q29 are separated by 3.0 m. At what point, on a line between twdl*9yvk q zw8 r2j2 ;v).pyhche 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, mbousady t(rb,3- n. and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge beu,3mr,n(osyba d- .bt placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. cor wg3+ip98 iWhere can a third positive charge +q be placed so that the force 8 icogr3 iwp9+on it is zero?

  A copper penny has a mass of 3.0 g. A tota f;f9o,fup (gml 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 again,3a p 58ci)+lyb whritt+qcf5 st the force of gravity by the attraction of a fixed proton some distance above it. How far y53)wpcbf +itar,t h+q5i8cl above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commov6d23z a jfg)u0o/)yme:fe unn point by nonconducting threads which ae/2m nvf6zy )u)af3 uod 0:jegre 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 +4c8aq.qh j*inn/1pnx93e il )d0e. What is the magnitude of the electric field at a distance of 1.0 xi acl n)i1hpj.3*qn8/9d nqe m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1yvmgoll 64k08wbp*o8, m zwoj ,hg+d24bp )gx .50 m from 4,8j gzg2 oby6*ogl)lh8 0pv4,dom k+ wpbwmxa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small tepqw 2,ty 4 vt7hcr.8kjst charge. What is the magnitude of the elejv,4 qrp87y.hct2 twkctric field at the location of the test charge?

  A 5.0-C charge is 10 m faj+rfaskt+q9 0 -df/soi2 fah. m(zr vo/)6flrom a small test charge. What is the direction of the ellffdm(2kaas.sji /9qfz+v06 -ao o+) ftrr/h ectric field?

  A 5.0-C charge is 10 m from a small test charge. What is t,j m3;qu/pblf/q9gj+yx - un/cj iix /he magnitude of the fori3qu m/u,+ y;gcfn qijpl//x9jjb/- xce experienced 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 separatedxp)9: cw ypste4h jt*ue 4(,)z rh4g3axhyvh+ by a distance of 4.0 m. What is the elect :) ph gyeczhj xa(vys4r)p*h94hwe43t+tux ,ric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cc8 wbv5ra xa ;it++rk1os +a7hharge is placed at the 50 cm mark. What is the electric field at the 30 cct+5a8w17va+xib ;+s arkroh m mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a8f(euj 9v -fdc -4.0 mC charge ie d8cu(f-fj9v s placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mmei-wk 5qna:( C are placed at x = 0 and x = 0.20 m. What isa wem5ki-q:(n the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners oip5q+ifmr,wl80.ti wdz+ f-af a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the lifqdram-pf.z iw5 +t08iw +,electric field at the center of the square.

  Consider a square which is.d jw5k:l8r nkp3 0ont 1.0 m on a side. Charges are placed at the corners of the squr lwpdkjo0nkn t5:8 3.are 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniforcf;sul 0 /dij0m electric field. What is the magnitude ou0l0idj /; cfsf this electric field?

  A particle with a charge owpmvor:1,y8 u m9 fy,v2pnbf4f 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 electric field of 60p7nfj y-iaosf ;k.v8: 00 N/C pointing downward. What charge must be placejs no:v8y 7. kfiaf-p;d on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Ty) zcx4vjd x7ns 3qqjt hrw-7pg7vj(. 4.f h-vhe ball is placed inside a uniform electric field, and is suspendeh44fsxvx zj yq 7vp7-)v7 (cj nj.d.r-wtqh3g d against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ch9 .;wo sc5dhvyww *d/garge of +2.0 mC. What is the magnitude of the elecg*h/c5o9y;ww.s dwvd tric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whu5j*,b-5f9s k-rklsfmu wdesd 9n6 b( at is the electric fieldf n9(ssk* 5 m6,d9rskudf-b 5- uwejbl 6.0 cm from the center of the sphere?