State the law of conservation of electric cjia uw* sws.g);gt8( eharge.

  Is it possible for two negative charges to attract each o 97jj1xr62 qx bol4v:ja(kwjyga q+u0ther?

  Is it possible for a positive and a negati1n- m 1b;lpxfive charge to attract each other?

  A glass rod is rubbed with ako ;rn:6k8xr5 lit bj/v 2qk50r4lrl5j,p kq l piece of silk. During the process the glass rod acquires ap l/ir2lvnrlrk, kl5kx 86q 5o0rj: bqt5k4j; positive charge and the silk

  A proton carries a

  The model of the atom shows wp2;jr etw0,z a

  A neutral atom alwaysg-o c9zv5upnge ,xi,+ has

  An atom has more electrons than protons. The ad vry zz.,ky)0tom is

  Materials in which the electrons are bound very to 1wlm 7x.uc2wightly to the nuclei are referred mow1wcuxl72 .to as

  Materials in which the electrons u;cwg0 1s;estccq39y are bound very loosely to the nuclei and can move about freely wit ;gts;wqucc 0ecy91s 3hin the material are referred to as

  A negatively charged rod is wd.07qyd1a nk 3t ik8nbrought near one end of an uncharged metal bar. The end ofndkin.d t7kw 1 qy380a the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neu+q1o*;v r1uvwxneckb ,t (u8gtral. They are placed near each other on an insulated table. Sphere B is briefly touched *,8oe1w1buktvvr(gx ; +nqc uwith a wire that is grounded. Which statement is correct?

  How can a negatively n80o l-w z -w63h-hdg:ir-f q.rjycfc charged rod charge an electroscope positively?

  An originally neutral elb2 :0wl l)8ll5vn mh(xtz6pyiectroscope is briefly touched with a positively charged gl y wm ntilb)82hl6(vl0:5pzx lass rod. The electroscope

  An originally neutral electroscope is groundedhfygj5mia74) pb1 dt1 briefly while a positively charged glmphj4t 5y1 bg7fa id)1ass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepy*og*.aexy6p mj :c z z9-5bevarate. Then a negative object oe6cj:z* yem*apg- zb yxv95. is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object ia3px rx eow7:l b5 d)on;.wi0us placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it.o0p n7w ub:i 3rx;x)edwo .l5a 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 Coulomf:j.erz4ka dq ir50x 0b constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dp,d tmkylk k ; 4kanik)u3p2xkob(;6th,:k i6 . The first charge is larger i ht b ki )2k;mp36,(tnd a;,y4:pxk6uklikokk n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is()hq+kd / c*afv(i b fwua2ri( neutral. They are placed near each other on an insulated tadhb(fi)u2qa/(i( +wfvk * cra ble. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fogz zo(/053escz r, dv9fph acuo1 z(k(rce. If the charges on both objects are doubled with no change in separation, the forc3(g1(aoz(kc05vzhpu/o f dc ezr ,z9se between them

  Two charges are separated by a distance d o/o; +b2bw tufo;qw(xand exert mutual attractive forces of F on each other. If the charges are separated by a distance o /wf u2o(obobwx;q+;tf d/3, what are the new mutual forces?

  Two charged objects attract2b i5bkas) az( each other with a force F. What happens to the force between them if one charge is doubled, the other a(5k s ib2a)bzcharge 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 separs8s tjo qfckdl)s56-8- yzdz5,w ruwcv80w0k ated by a distance of 1.0 m. What happens to the m 8fscj8w)0d wkdu0-tvz -ywkor,s z5l8c5 s6qagnitude 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 dia98f3iwx qa*yt7 tsx3mf2y .astance of 1.0 m. What happens to the magnitude of the force on the fir7 x ym3taa i8x3fat.f*q2y9 wsst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a dist;9v w3kr7n wu :lmue3vp7v.)plq)rclance of 1.0 m. What happens to the size of the force on the proton ifv p)l.m:7 cr)vp uk3r;ww9q3lu elnv 7 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 z-dc9apsdgb15s7(pjq ;f ovuju sqew,/3-8 dpoint 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 the net electrostatic force acting , s79; sevc5d8ju s bq-za dpp1j(-owu3q d/gfon the positive charge at the center of the square?

  A point charge of +Q is plv( af yp*-qz m-+bas+am4hit; aced at the centroid of 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 one of the + zmqy4ait+shafb;v *(p-ma- other vertices?

  Which of the following is edpsx43.y npyq2z80q not a vector?

  At twice the distance from a point charge, the strength of thejzufnp3 (e call ,;88iz-aj9f electric field

  Is it possible to have a zero electric field value b 8to-:f mdn4;rqh n+ioetween a negative and positi4: o8f-trn;qio mn+ dhve charge along the line joining the two charges?

  Is it possible to have a zero electric field vaw6szl *vr:suhc .oe (7lue between two positive charges along the line joining the w 76*eholz.s(:c usv rtwo charges?

  Electric field lines near psitive point ch6ts xbojgr05dkqyr1x(iy2c 1* ku85harges

  The electric field sho6 skew z1km6ietlv 4xh8 /2/pxwn

  Can electric field lines intersect in free spac+u36*b gi ijyke?

  A solid block of metal in electrostatic equilibrium is placed ./cbudl+ 4u m44jxfg caicj91in a uniform electric f+.x49da c4jcbu g/14lijc umfield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a holf.p-z3yy* n lblow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and .z -3lyfnp*b ythe surface is

  A cubic block of aluminum rests on a wooden table in a region where a uni3ydm9p c fn4t;fu/pvq-ki(f*form electric field is directed straight upward. What can be said concerning th vpfp;f/ f3ny(ct d -9uq4*imke charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neav6kv7fv .hqt/-zs- z-t q th;ar an electric charge

  A positive point charge is enclosed in a holcv gv5kp*6xqkqr 0 t/2low metallic sphere that is grounded. As compared to the c 5vv k/cpxqkg2*rt0q6 ase without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors inbwc j( mtj**v7 n6bpea*g4l*c static equilibrium.

State Gauss's law.

  The charge carried by one elec nvyv8(o yid.qu3h8;0 ocrv z:tron 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 ne1rbw- d 2ehkj/w h:fi3t charge of +2.00 mC. How many more protons than electrons does this rfh1 ei2/hd j3-:bwkwpiece of plastic have?

  What is the charge on 1 kg of p2jiiv :e7ncm4 rotons?

  An atomic nucleus has zdhc2u 4ceio zn(8z i3/*:jv*wq4lfr a charge 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, hg 0l 42uzuyix fj0m ;yg/hh*2yave charge values of 2.0 and -4.0 mC, respectively. What is the magnf4 2g*h/ju uyiz;xhm20y0gl y itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thej cqvfbo,8zk 9, g:k4km is 1.0 N. What is the magnitude of the,o8ckfzq:k ,9 vbjg4k second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparmn3 6bz d8lnt)t are they?

  The force between a lp 0vp.6cnga ,h o+gd1$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2nrk q7; hx4.jg.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm,hrk.;n 7xj 4qg what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axsiwmy,kghonj7f.:- c81;n ipis. The first charge is at the origin, the second .fsm:i;g - ci8,j n7k hpynow1to 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 cha9,l,h q2rdcn;d 6u xj cgp,8ilrge 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 eld2 uhnj6cd9rip l,qc,gx8,l; ectrostatic force which acts on the charge at the origin?

  Three point charges af17t 1usw swby3n1 n(ure located at 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 f 1ut1 nw3busnf7(y sw1orce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and m7dr)xp* jwckvr.5ci5r;y h /a second point charge of -Q is placed at the upper-left corner. It is observejxmrrcwkyid ) 5v*5/p7h;.rcd 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is .1m+jc4t:thhbz )pyee tl)+mat (0, 0). What is thej+e1h mz): +4tt lmhe tbp.)yc magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 t6xtlb-iax ;djt 8o4 ekh2,5b = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, -bjodt 2ht46 5e klbxi;t8 x,a0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC arq( nz29 kuq z4phcc57fe placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electr954cu( h7n 2kfc qpqzzostatic 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 po ghml l bplsfm/+( fg4s5zowvcn;39+7int, on a line between the two chargelfb 9 /lsgs(gm; vpnc7o +lf3 wmz54h+s, 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 +9.0pcg..z aoa:-a-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed s-aog apcz :..ao the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where7lson6a gwjmpavaih0 +91g j7gta24. can a third positive charge +q be placed so that9 asp v jal i24h+gan1g7a 6jmo.twg07 the force on it is zero?

  A copper penny has a mass of 3.0 g. A total omhxdq 5ide w nly c:,8r1;q.0af $4.0 \times 10^{12} \; electrons$ 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 tw( 0i:fzorjm +a r3qr(he force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prq(3 zoj:0(f+arrirwm oton?

  Two 0.20-g metal spheres are hung froh ,z-s:fw uf;vm a common point by nonconducting threads which are 30 cm long. Both are given identical charges-s,f wu;vh zf:, 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 +40e. What is the m sxupjimjyynq8 fx k)d)g- f)(41.u i(s+3prpagnitude of the electric field at as(k4 x) 1fx)qd3 -ui8y p jr(p+jpgsi.numfy ) distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric n-rwef;; /pn lk2mfj ;field at a distance of 1.50 m frf;w-e frm;k pjnl/; n2om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is th66 b.qddoz9pz e magnitude of the electric field at thedd .6zp9z o6bq location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th h3 vtl4x3t*fve direction of the electric v3l*th 3vxf4t field?

  A 5.0-C charge is 10 m from a small test charge. Why01s1 gfc hk9eat is the magnitude of the force experienced by a 1.0 nC charge placed at theecyhg f ks1091 location of the test charge?

  Two point charges each havebxr 6r b6;7faf a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ca xf67 6bfb;rrharges?

  A 5.0-mC charge is placed at the 0 cm markhn qysyza/69 6 lx ojp(u2;b5b of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is t u x9yb jb qso6yp/ah;nz5l62(he electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char8 83 bz5rwlrlqt.+pnpz5- lmj ge is placed at the 50 cm mark. At what ltr5zb8l3.qp8-5pwr +lnz mjpoint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mfsx,oh zl/.6okg1t8wn9; lz n8la ng9 C are placed at x = 0 and x = 0.20 m. What is the magnitude nkn968a8n 1o g.glf9ztl;,/low hxszof the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. T.rlrvv) n v2;7nln r6fhe last corner is occupied by a -3.0 mC charge. Find the ele2vl)frv.76rl r v nnn;ctric field at the center of the square.

  Consider a square which is 1.sy .;bh1.u m/(brofbv0 m on a side. 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 therfy;v( 1.bs. o/ubhb m square's center?

  A force of 10 N acts on a charge of 5.0 mC when jp.aw- klnph0 y;q8:p)lu0ks it is placed in a uniform electric field. What is tnu.kwp)l yh;p -qpal8j:0 0skhe magnitude of this electric field?

  A particle with a cha4 fw2.)eyt yehvct sh1cf,p 1+kxx- z)rge 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 inkqkzui2*,yvk6 .u16rbn, hps p v5g g74bpts. an electric field of 6000 N/C poin7h*6k ngpvbyq.rp, s1 gb4k2zu.tvu5i6 s, pkting downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed ii ),zs5 j c3fxloh6) hw7 c)rtr,syyy)nside a uniform electric field, and is h t3, 5jco))lhyc,yr)f6zsir y7 s)wxsuspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. y/o8k-gt m5dz What is the magnitude of the electric field 5.0 cm from the sphere's su5mg oztd-/ y8krface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electr 09:g 1fxitzwwic field 6.0 cm from t9 w0wi:1fgxzthe center of the sphere?