State the law of conservation of electric chbfs s8 lcw:*:pp;c /jjarge.

  Is it possible for two negative charges to attracc c1n95e.n)u9kq(nwxu7 6 fdv1 uifph t each other?

  Is it possible for a positgb4av (i1 enp 4yzo:o4ive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procesm6xu 9s(i/r kjs the glass rod acquires a positive chx j(iskmr/u96arge and the silk

  A proton carries a

  The model of the atom shc/cww l 5 :cz3ck4b:xsows a

  A neutral atom alway./ d-b lp-ihths has

  An atom has more electrons than protofs/+tn f7md)3k t u9zufo0h3 mz9pfc1ns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref djh0aju ryg-y/fso2lg4j u*xkzs5*7 b ;d,d,erred to j5l xg 0dydy2ja,kgs-bru *h4 7zsjo/*uf d,;as

  Materials in which the electrons are bound very loosely to the nucleij 2bu ;9/zha8x4jwtfz and can move about freely within the tjhfw;z 2u84/ zba9xjmaterial are referred to as

  A negatively charged rod is brought near one en z8uglaccdbx :v*p-)w rg 2za6d/0me/d of an uncharged metal bar. The end of the metal bar farthest fro *g8wu0alzg/ vb:2 cd-/cpdr6ex az)mm the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neut35b brpfr q*o+ral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which sta+p b5rbf ro*q3tement is correct?

  How can a negatively charged rod charyi0 pcb8d,a b zo2pp78ge an electroscope positively?

  An originally neutral electroscope is briefly touched wha2 b+zw dy:g.ith a positively charged glass rod. .b d+za 2h:gywThe electroscope

  An originally neutral electhm: 65wbos vkpid.:hd-:.fdx, x;twjroscope is grounded briefly while a positively charged glass rod is held near it. After the gla 5jphd .x,vh wd :kdws mfb;x-.i6t::oss rod is removed, the electroscope

  A positive object touches a neutral electrosc/,xmnm n:bn+p ope, and the leaves separate. Then a negative object is brought nearnbm n+,x pm:/n the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obj8, 5 vi+.bp)d, iaar)f fxchpryv21qzect 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 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. 2z padafi)1, rxq5fbh,r+icy )8.vvp What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constm:* rkf x;ixhm)6.pnfh4x/jo ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargee4zmr3fj q32 u is larger in magnitude than jq 2mezf33r4uthe second charge.

  Sphere A carries a net charge an5se k xem dde(m7rey r :/sk)o.;g9;i)v0qfjmd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fd f9x5r/edkmi)es;y.q7 e:mo jmg(er v;ks) 0orce between them?

  Two charged objects attract each other with a certfc7(3j l am:qjvd0 (vnw67pn nain force. If the charges on both objects are doubled with no change in separation, the forcdln:j07p mcafw7n3n (vj 6v( qe between them

  Two charges are separated by a distance dxr( g2grnsl-6 cdi19 t and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fod2rtnc r(xli-g9g s61rces?

  Two charged objects attract each other wi2 i4z,cn*+j nhhr jsg kon:d2-th a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distj ,jsdghr2ik24n* n-z: ohn c+ance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sep qo2toz) tw.7uz it7m-arated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second ele-zw.ut7o qt )zt 7o2mictron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What+scnk-tm74u2 7f f2zn tc8ojd happens to the magnitude of the force on the first electron if a second elecc- z k24nj to+nmftd 2cfus778tron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happew.)3c i9opjsu( nh:jnu .s7mlns to the size of the force om ..lipwcuu:jo ns 9j)3h(7s nn 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 (3h*et-s +l6p. o c(hdhum (d3q lyigpsquare. 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 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 auo sip-(qhh.tcep3 l(hdy m*d3+6lg (cting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centso+3 isa y58tbroid of an equilateral triangle. When a second charge of +Q is placed at one osi b8sta+ 5y3of 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 no)kg4 kdp *mdr5t a vector?

  At twice the distance from a point charge, the stre23)fnyw l+jv 2n7d guhlhv 9*rngth of the electric field

  Is it possible to have a zero el9aaxmk 07q fzbmem* srn* 6.x3ectric field value between a negative and positive charge a 9xs7q3 nmm0 ra.ax6m **zkbeflong the line joining the two charges?

  Is it possible to havrea d/ 4cplgxq;z,3q zc+ 1hs/r +g8eqe a zero electric field value between two positive charges along the line joining the two chale z/,c /+qsc hraxdqpgr84e3;qz +1g rges?

  Electric field lines near psitive poig d :pk.jwey) +z0g-tjnt charges

  The electric field show vu x()t+bx-ytn

  Can electric field lines intersect in free spac bjwks(i/mf2js 9b lt) 4pi5zm1i-qo.e?

  A solid block of metal in electrostatic equilibrium is placed inh9gwq+l )dhmja ue:t) , quw8 (oh4ok0 a uniform electric field. Give a statement concerning the electric field in th,uqqhw+wlu4)k odhh)9 j:o8( eta 0 gme block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are b;sd; rq7,8ozhy8q cn each given the same charge, the electric field bron ;ycz7s8d;hq8,q (E) midway between the center and the surface is

  A cubic block of aluminum re)mhggs 1zm)cf1d9zlm n.ngh c3+1m* usts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top3hmgm1h+g9f)duzmn*c1n s1 l. z)cgm surface?

  If a conductor is in electrostatic eqi sn53v)fcma/uilibrium near an electric charge

  A positive point charge is enclosed in a hollow.snl90 /l)d)npynpoh metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sp ).y)/ln n09dnpolsphhere has

State three properties of condvd t;hli *v7p3uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron 9ptusa fx 29g.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 +2.00 mC. Howt*nl3h q4ng i; many more protons than electrons does this piece of plaln 4;itgn* h3qstic have?

  What is the charge on 1 kg of protwc:n l;y8h mb7:(s;gy6q q2 wm 6rkmhtons?

  An atomic nucleus has a chargyj779augb x kn.y4bs2e 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 2.0 and -4.0 sd* ym4b w6fa4bf)x+mmC, respectively. What is the mag+ambx 4m4*bsf6)fy d wnitude of the electric force between them?

  A 1.0-C charge is 15 m from a s8/i(gvu* shfmecond charge, and the force between them is 1.0 N. What is the magnits(gh/8 vif*muude of the second charge?

  Two 1.0-C charges have a force between tktnm515h7vhv5527ub r y- v ; uzgonrdhem of 1.0 N. How far apart are they?

  The force between a m+b(hpunh 7 .m/, lp-ufxhg,x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially clut (.d8y+ 4wrtah5n 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cmt4u8. l+(rtnwc 5a yhd, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thew.)m9w0caahaaaf9 .3 dm jpu)l2x9 k n first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 9k h u)m0xanwml)c p 2.3ada9fwa.a 9jcm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed oobe3ysb1r ;8h x8jy57 szsu 1yn the x-axis. 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 direct85 uz1 x oyyeb8sjbs;3 yshr17ion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = i*w vv)iu re4 cg7bb/-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 onv*4v cb r)g7/b-uiiw e the 3.00-mC charge?

  A point charge of +Q ixgpfci,l)jd8: : k(lls placed at the center of a square, and a second 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 a)j 8lcx:: p,i( llgfkdt 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 m2is+6z1 s*ddywseq8/gcyt x(as*: p); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC s+8ymsywszxtcds2*d: ( 6ie/1*a qgpcharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, ro-nox 0p,mf5 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the diop0xr5no mf-, rection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilater/.jm5jt4qd/aro xnp 9al triangle which measures 30 cm on a side. Whatj jp/t qmd5xor9a4. /n 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.vx q k6ok ,i0ohbl+q(.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such th,qvkqo xlb o .i(06+khat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C ch5x0rbc/-q0 h3 eg7pb.3c bjjd s /jvxs hr)3dearge is at x = 4.0 m. Where on thcj d c/ xb/ dxjjrs)7rgep3v03b 5se-b03hq .he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and ch)v.r7 i drwihsn ;8as-uxpfn 0h* 7oc)arge -q is placed at x = 2a. Where can a third positive charge +q be; oc .uwd *n7hp)xs vr8ihrn70is)af- placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalmz;k6/druw amnd,w73 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 the0 ntw4xpn:q:j xgq bs:5eq5-e attraction of a fixed proton some di -s:ngpj:e 4nw55 xxqbtq: 0qestance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting th mi1,a;d9 logsreads which are 30 cm long.9 o;lgm as,1di 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 +,01gdikq46q nivg:m4 v kk *ga40e. What is the magnitude of the electric field at a distance of 1.0 v0ak4q6dimig: gv*4kn1k ,qgm from the nucleus?

  What are the magnitude and d.6v l qs:jeeq/. 0qcgyirection of the electric field at a distance of 1.50 m from a 50.0-nC chargegvl c/s.yjq6q. 0 ee:q?

  A 5.0-C charge is 10 m from a small test chh- h4 sc3pwmjpvmh*,4)( + yv2cpkj hwarge. What is the magnitude of the electric field at the location of the *wpchk (yc v2vj hhhs3-+p ,)pwm44mjtest charge?

  A 5.0-C charge is 10 m from a small test charge. What is 5 u lz2 ;8gocsb(ejo6zl,vob+crcx1+ the direction of the electricju2,exrzl8osg+ c( bcbc;5v 1ozo+l 6 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ok*v3ml * 7jtemf the force experienced by a 1.0 nC charge placed at the locatio7j l*v*3 mktemn of the test charge?

  Two point charges each have a valu2 j4ij (n fk7ejvuvv5 za(o.h9e 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 two5aou2.h e(7j (i9zjv kjvnfv4 charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ayksxf 8 5*zel34mrnz1 -4.0 mC charge is placed at the 50 eyz 5nzmr8s*4lx31k f cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plavkq:cam/; zx - wn85uoced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Ato; vxu-k5az8/qcnm w: what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placede 9z5zl kx:kid)f3yk o/ kq+o+dh/t0n at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the py9i)zfho +q3kl exn0z d k5/to +k/d:koint midway between them?

  Three 3.0 mC charges are at the three cornxl/x;ry+4 k06z.v)skwe iw c sers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a cly +xxww z)ek;0kr/6.4s svit the center of the square.

  Consider a square which is 1.0 m on a side. 1x,v6 dj6r5xyvvs g1y 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 magnitu11dx5v6 ,6yvyxr sjvgde 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 uniform ele1ncyhc6zw h;.w/tz 1 nctric field. What is the magnitude of this electric6th.y 1chz/nnzcw;w 1 field?

  A particle with a charge of 4psqee2c r/+q;mj m+ 0c.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 fz.0tg1i f 2 ttcpz/vi0 :3waepield of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspf t /wptvg3 02aezzicti:.1 0pended?

  A foam ball of mass 0.150 g carries a c1 /jx0tg dh,fzharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the gf1 hx/0 dz,tjforce 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. What is thx/ f xr6ik- 57zotq8uzo.m(kae magnitude of the ele6tzkr 58( axqm fio uk-x7/oz.ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car(1fnt0m zejdzy 3v:z6ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the spjzmzvet:0n 6yfz d1 (3here?