State the law of conservation of electrbx:2r-dm o (kcic charge.

  Is it possible for two negative charges to8d+ 3n3,f7dg(j zqudt irvb 4v attract each other?

  Is it possible for a powxvz 7: )tth:pi tpl4fi,gi8)sitive and a negative charge to attract each other?

  A glass rod is rubbed4tvu8;(h czx o with a piece of silk. During the process the glass rod acquires a positive charge and the siu;xv4ot8z (chlk

  A proton carries a

  The model of the atom shows oq2 -)gumy ws6at )se7a

  A neutral atom alwayc.f; hpxe(i (ds has

  An atom has more elec -bo gld63oq(+b(i4sq zyn)yi trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are re6to igy jr 2ds)qx.n+6ferreddxtg6nj. r)o6+y isq2 to as

  Materials in which the eleb5 vz:70vv p8lbias; ictrons are bound very loosely to the nuclei and can move about freely within thvv;bv0p 8 sl7z5 i:ibae material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Tx4p +7xe0tbdx he end of the metal bar farthest fx+pt7x 0 4bexdrom the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutr ez* 6ukxtk:-hq14mv mal. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statementkt:xv* zh q-um1e64km is correct?

  How can a negatively charged rod charge an elp1,fhr).xpt0 (+ rmj2m,.g qzax bdy vectroscope positively?

  An originally neutral electroscgom2n41qeh)km yd)b;(n70 h bhv )qsaope is briefly touched with a positively charged glass rod. The electh egvnk;hq47dqb)yn ) 0bms)2ao(hm1 roscope

  An originally neutral ele . 6ehd1hf it1.m.qson,5cjwo ctroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is rqh . ij5o n6 ds.c1emt1,f.wohemoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then 3:zjkjmq*g; g a negative object is brought neaq ;: jzgmk3g*jr the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placedo3e5tx15qi,wfm4r gyfe :yq8hn8p8,a u bd3 b 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 first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch 3pnae1egt,4u5rf :88fxmb8q 5wyhoiyd, q3bthe 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 Coulomb constanz;e b .e)o*qgnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distpcpk,y c7hf r-*rh2e:ance d. The first charge is larger in magnitude than the second char7h cr cpkhpery:,-2f* ge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e.e s wu:n9p0/ vg (kfa3bd**swixqn:zach other on an insulated table. Which statement best describes dnaxqw:ipne 0:* f3uswgbs vk.*9z( /the electrostatic force between them?

  Two charged objects attract each other with a certain(9(acz)yxf 7tr ohpmljc(h mil s143 , force. If the charges on both objm ( ((hpsi)1raclmz 7otly3 cf,49xj hects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive*i5 /od4pgv 1 w.b1godoyrt9vw8e. zar 0tv4g forces of F on each other. If the charges are separ.var et0wbw1po ovgtd4 4 dg9z/ 58ig.v* 1ryoated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happ )51t3h,bzgwmkg ) u8ve( 1vxb, cwhniens to the force between them if one charge is doubled, the other ,tg )u hz5)1mb 3wvk,1eignx(8w chbvcharge 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 separated by a u2y5 vq5nzq4 oszv2d: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 first electron?nq zq25:uzdv y24s 5ov

  An electron and a proton are separated by a distn9 pu)gemy c7i7*i(ezance of 1.0 m. What happens to the magnitude of the force on the fi7*ee in)7mycipzu g(9rst electron if a second electron is placed next to the proton?

  An electron and a pro6l z5qmq3 2o kf:yp3cpton are separated 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 clo zqpofp25qlk63y3: c mser to the proton?

  A point charge of +Q is placed at the center of a square. When a second+b,z n*whh0w b 1 lb8k;gk1 hjkcg4.mi 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 the net electrostatic force acting on the positivgmzk14hn; * b+lw 0.b k1ghk8wj,ich be charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triang;ze0hrg1 1q+sm ve3njj6sb. dle. 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 other verticess1;j. 6z+rv0gb3e dsjhmqe 1n?

  Which of the following 35qy edc bre;f4+c mr5pm 6:fsis not a vector?

  At twice the distance from a poz72;rfi)f 4:rnvl bi qint charge, the strength of the electric field

  Is it possible to have a zero electric fie07l 1b*:xo ljie4dcxhcxz z;4btu **cld value between a negative and positive charge along the line joxc4jhl bb dz*7o* tz:4;lxexc0 1ui*cining the two charges?

  Is it possible to have a zero electric field value betf0l/ mz s:m;3nroj mwi 3b)/gcween two positive charges al:ig/3smwrm)c0fj; 3l bom/znong the line joining the two charges?

  Electric field lines near psitive point charges39,)f-zyp -yrqcl gk i

  The electric field shownro j5z. rc)*db

  Can electric field lt.;oll: 1ko wzkrqn, bh3m(t/ines intersect in free space?

  A solid block of metal qmd3ysx:fv9ac 6.bs(ka ;:a xin electrostatic equilibrium is placed in a uniform electric field. Give a statex kqx:bsfm3s.69a cdva :ya (;ment concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diog 5lf2x7sgi hj /fc.;nujw)/ameters are each given the same charge, the electric field (E) msog i7;fgnj5) l /.ujx 2cwf/hidway between the center and the surface is

  A cubic block of aluminum resm-f gmm w+2,vyts on a wooden table in a region where a uniform electric field -m wvgfymm, 2+is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic e k, 9ct.bwx)erquilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i;yz4icx* wa6)r phs.fs grounded. As compared to the case without the hollow sphere, the electric fiel. hzr)ycpi6*ws;f ax4d at a point directly above the hollow sphere has

State three propertitir2a 5vse7-ps : uz7nes of conductors in static equilibrium.

State Gauss's law.

  The charge carried by.q-k9 vt f 2ln n-prixoe879eb one 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 charge of +2.02auu pcm54ih b-9x: cp 2/jwsd0 mC. How many more protons than electrons does this piece of plastic haveuh jswb5xmppd9-c2u: /ic4a2?

  What is the charge on 1 kg of protp6ft m 2vc/exa */l:saons?

  An atomic nucleus has a charge of a q: g8c-d oqhzkb5+k7$+40e$. 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 ofdhr tm0nw1 /z2 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forc1 0dr mz2/thnwe between them?

  A 1.0-C charge is 15 gxe.6utd8 - 0hqvkh v+m from a second charge, and the force between them is 1.0 N. What is the -xv8 ktu0qdh g6vh.e+magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How tx 9vtct p(m:*3zq(ld far apart are they?

  The force between a jf mkou9 .c:teqi)c: +$30 \; mC$ 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 yy;to qp96q/5xt8 xft 1.0-N force. If they are m/tf;qytyo 9x685 qtpxoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 eqaxdt- ,.wwe1 6eoe z hx.vavo l8:0:mC are placed 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 electrostati-av ehl0x8tvee 1.::adozq. wow,x6ec force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. njp5 ua-s6 09rjx2a5 gp r5cl.v1ucxa A charge 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-jua5u5xj.l0c 6gpa2ar95n s p xcvr 1 of the electrostatic force which acts on the charge at the origin?

  Three point charges are lo nt:yhugy(/k8m: knf0s x5kx6) d+iii cated 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+nf hi)/yt0 i:ksi(xy dxmn:k5k8ug 6.00 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 second9 mw 0kh 2ts.iw(+tnlx point charge of -Q is plhn2t9+tw i s.0x(lkmw aced 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?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.00* 8yg)mycclnj pw 7 c..m1stp nC is at (0, 0.10 m); Q3 = 5.0 nC is atgmyc*j.cs)wyn7 c8p plm.t01 (0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, -earar,on .m ,wzxgksdq ,gu,1e3:*c0); Q2 = -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 onre q1 c*ez ,-a w3rxuo.dm:k,ggs,an , the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at emncxo w3 y)t6dc./o; the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrosta wdnx;oy3/tc).6 omce tic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepascqxa0 fd; gv0-/ami;rated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such afmag/ c;-; vq0ds 0ixthat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C ch mny( xv.;,bzkx4vl t7arge is at x = 4.0 m. Where on the x-axis can a third chargeyk.n, b (vv;4m7tx zxl be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where1( g:czt gyqm8 can gmyczg(8 : t1qa third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mh9at*m tc3c8b9,zs ce ass of 3.0 g. 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 attracp q7hbf c,d0,r5p g0ie azd;8qtion of a fixed proton some distance above it. How far above the electron is thc pqirf g;d8h ,057,a0ebzpdq e proton?

  Two 0.20-g metal spheres areva.n*u bv qw9+ hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unti wqv 9.un+abv*l 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 magnitude of the electr4u x1+ kxnal .1e s/hzg4daj*gic field at a diskug s1ha4.a41dxzjgl *xe/n+ tance of 1.0 m from the nucleus?

  What are the magnitude and directl;rfo1li2+ 2vne68j nsx fmx:ion of the electric field at a distance of 1.50 m from a 50.0-nC cosv226e:fn irl8xjm ln;1fx+ harge?

  A 5.0-C charge is 10 hqpm6qh.n8f, ;avb t.m from a small test charge. What is the magnitude of the electric field at the locati.p;q vqt.bf,hnh86 maon of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thex-x o eutz47.m3m7 shc direction of the electric fieldxx4em o37s- htc7.mz u?

  A 5.0-C charge is 10 mexpop29dia2k 07 k39 deqqci) from a small test charge. What is the magnitude of the force expec eq29iqkk 32dpeoi9p)xa7d0 rienced 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 +nfim;04v:)iyzkwu ef( hy5 r are separated by a distance of 4.0 m. What is the electric field at a point midway between the yi5(kwe y0ihr v;nu z ):f4f+mtwo charges?

  A 5.0-mC charge is placed at the 0 cm(d cw;9pu 3fdn mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at tn fd9;du cwp(3he 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC ch v,6jv3yg62fh (xwzdddb.g *earge is placed at the 50 cm mark. At what point on a y6d*v , g.xjefz( 2w6 3dvdghbline joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are aqf y c ntkqq2r2;p/r1a5b2:h placed at x = 0 and x = 0.20 m. What is the magnitude yn2 2 rhaq/51:f ;kbcpqtqra2of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sqf il5st an8ua;uh8ny(qr lu/t:,t5*uuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fi l tua/yu5 nl(hnf;8usa:t*5tuiq,8rnd the electric field at the center of the square.

  Consider a square which is 1.0 m on a db-2b *ii+ m+ghbd-tyl b /-imside. 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-g d -m+iymt bhbd+/lib*-ib2 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 0u g9f,fpx-sfuniform electric fi9px,fffu 0gs-eld. What is the magnitude of this electric field?

  A particle with a charge of 4. a.n- kp9:sgve0 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 p am8 v6,fpm*mnlaced in an electric field of 6000 N/C pointing downward. What charge must be placedamn ,* fm8pmv6 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thx5 toj mwodxhw329.d 4e ball is placed inside a uniform electric field, and is suspw.xht 9x4j3w2d odm5oended 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 q56u hqjkp. q1+2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphpkq 1u 6.qq5hjere's surface?

  A metal sphere of radius 2.0 cm carries a chyy3 z+mp h gcv3i tvmp3,e:*9aarge of 3.0 mC. What is the electric field 6.0 cm from the center of tpm9: ta+3mzv *c, vyiehp3g3yhe sphere?