State the law of conservation of electric c165hf byixy:stopl: jcr1l.n 4-g f1 qharge.

  Is it possible for two negative charges1,yatzw*ggb w- s43wm to attract each other?

  Is it possible for a positive and a negative charge to attract each0ozbl/k2 8i :cdhb,d:q, uhcc other?

  A glass rod is rubbed with a piece of silk. During the proj1ht+jg 42l 2 ri2mf7vy7uuemcess the glass rod acquires a positive charge an+er7u4y ultvmg2j 21j7imhf 2d the silk

  A proton carries a

  The model of the atom sh ).of21/t nog/exnrvkows a

  A neutral atom always.))y,bso 8,a;g vdpjtarur lo1 c4io; has

  An atom has more electronsqd mcm.orb- ckr l3+sirj: z9-l5/ +ps than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arap5sv f:8g .n) yo0jmb+buvr* e referrbgjsov850u.pa *r : y)bnfmv +ed to as

  Materials in which the electrons are bound very loosely to the nuclei /y4+ upc5h7aq-nnjq6 *pzxgt and can move about freely within the material are referred to nu/tajq- pg7+ ny46phz*c 5xq as

  A negatively charged rod is brought near one end of an unchaay;c pnl904lg jl,lc; rged metal bar. The end of the metal bar farthesa;j 40ln,pc9; lll ycgt from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B fzmdrtrr8/6*8hd6 k eis neutral. They are placed near each other on an insulated kte z/d f6rh8*8d6r rmtable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch+4w 7ppp/sf v )8xucayarged rod charge an electroscope positively?

  An originally neutral electroscope is brie jv-;k,llp0b sfly touched with a positively charged glk0v-b ;lpl ,sjass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positiw; tu92puof *y ;oijl:vely charged glass rod is held near it. After the glass ;:tyowifl p u*9o2 ;jurod is removed, the electroscope

  A positive object touches a neutral electroscope, zj*b7c(j5-zb5d h hbzand the leaves separate. Then a 7bhb -cjz5bd z*5jh( znegative 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 neutraoa y(mxaz)epx,qj 7* 5 +ruzs,l 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 negatisz+ajox,5 u,m r 7) *ezxyp(qave 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 thek..j3x/p 9faas5xsb i Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is zy2jop1 y.v :slarger in magnitude than the second s 2ovpjy.yz:1 charge.

  Sphere A carries a no6r ) jly. (qwbs80lnvet charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descrlqw60b.)yl nso(j v8ribes the electrostatic force between them?

  Two charged objects attract each o)g7io ;now f 44 c9a*mjqc6y8 :mgeyypther with a certain force. If the charges on both objects are doubled with no change in separation, the force betweenq4;9n y: ecmojc8y6mgy*4ipg7 o)faw them

  Two charges are separated by a distance d and exert mutual attractive fo/e(nant3x a:wetn 3,s rces of F on each , 3e(et:3n /wsnatxnaother. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wgj m-k;jf5u1ize2 pj* hat happens to the force 1i*fkej2 5j m-;ugpjz between 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 separated by a distance of 1.0 m. What h6jn:9fzal,q(mcacrq(s n z anp 2:h) 1appens to the magnitude of the force on the proton if a second electron n1a6f)nq92m,z a hclr( ncspa::j qz( is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen((3lr2+ d yw)fy nkimns to the magnitude of the force on the fld((k+ yr)23nmyf n wiirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. gjn*r7+ hb+zdnrw;ss6 :p;fk What happens to the size of the force on the proton if the electron is moved 0.50 m closer tf76 wg+dkrp*nr:+zjs s b;hn;o the proton?

  A point charge of +Q is placed at the center of a square. When a s ky,3;lnncjlt05i; oi,9hde zecond point charge of -Q is placed at one of the square's corners, it is oynnick ;3dl ,h ;i5lezt0j9o, bserved 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 centroi0ujetthvt1df q7;::f/r p.hj d of an equilateral triangle. When a second charge of +Q is placed at on prtvhdj.f q:f;ju/70thet : 1e 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 i vnhbk18a,ic ;8er9wis not a vector?

  At twice the distance from a point charge, the strength of the electric fieldds(r /l*k rv,yufg./ q

  Is it possible to have a zero electric field va*th(g 9 vfq0vus6r7xolue between a negative and positive ch*st0v7 vgof(9r6xquh arge along the line joining the two charges?

  Is it possible to have a zero electric field value j3w7 5*y:tfn hijp u:(g9ovha between two positive charges along the line joining the two c9ny jhpwovjgtfuh 5i7( 3:a*:harges?

  Electric field lines near s0o7qsub ttv a5g:)a,.rh (v i5wh8yypsitive point charges

  The electric field sh(mfbq) q.t w8kw1mv d9w;1vwsown

  Can electric field l dg/ltz3+w6x vines intersect in free space?

  A solid block of metal in electroa 4xzoirxn: zcl(. 3*o ui0pi1static equilibrium is placed in a uniform electric field. Give a statement conce4ol1npa0u3 cizzro x.* x( :iirning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal spherez0a9 wlrt2i ;0q 8p/ pjtx1kmz of equal diameters are each given the same charg0pmz0trwz; t28iqa lpx9 /1kje, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wherktic ( )x96dp ucm uto d+u2ib9,vi5(fe a uniform electric field is directed straightik9utc fcbdp2o+u(m d v ,u)x59ii(6 t upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrgphs)-c0nf 7v ium near an electric charge

  A positive point charge is enclosed indlxfvuti,gw .9sl5s5 1(fhx z ) l+e9o a hollow metallic sphere that is grounded. As compared to the case withf)(l5 ixod9 sle9xl 1.uhtf,zwsv5 +gout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducx *ox0gh8e 1sn1smk/9 z3csrators in static equilibrium.

State Gauss's law.

  The charge carried by one evpzggfkzng* 4078 6uo lectron 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. How manyeprj t)y jv 37jqeyku ;6-qa.7 more protons than electro77qkyjr p;6.yj3eq )vej -ua tns does this piece of plastic have?

  What is the charge on 1 kg of protonsg7 (xfmf2cge r:x(4h o?

  An atomic nucleus has avo(;5xp cp9i w charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepoj;+ 18:cg vaqqyh( f2fyxm2harated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mh x h(2fcqa2: mg8qf;+oyj 1vyagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bproi6s-r3 xxv)cc.yj)mq1 6 de g eh70etween them is 1.0 N. What is the m30 )jsi7 .6 1)-rcvexcxdpe q6gymorhagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fii/,m)reed:i,x o6x/awuqn 9 ar apart are they?

  The force between a a 658(squren ct894d ye*wu)0miyaq x$30 \; mC$ 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 fo59):ovh fuiftrce. If they are moved to a new separation of 8.0 cm, what is th5if vfto)u9 :he electric force between them?

  Three identical point charges oe+l+naev0hyjw* c7b7 0nv x)jf 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the rig+l 7+ bv wjhc0jx*veena7ny)0ht 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 placedj bptf3 +vvxp:n7m .a. o:c*ap at the origin, -2.0 m C to f3ta*x7:npvb+o.m c:p.vap j the right at x = 50 cm, and +4.0 mC 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 areaip*09ojyg ;hua a+o f-e*lc8 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 ata0jpi foa-8 gy +*9hl;o e*cau 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 center of a square, and a second po (hd7)q4rhgzpy.jx 3zint 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 .4qdy)zgxz7ph( 3hjr 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 = -17/ssgv2ud 2uq7uw kagg.74 ad .0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is kq 2da.vgussu 274/77ggudwa the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0rr71idnb 5 tk(); 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 on the 5.0 nC chrtd( n 1brk57iarge?

  Three identical charges of 3.0 mC are pla* psl n69tb b8 xexp0 +u*5i,t/tiacjdced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electros+iptn8a *d9u, /ext0*txpjb5lib s c 6tatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m pevb3- +krn+8zerlq.. At what point, on a .rzqk++eb l3-8vre pnline between the 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 thpkbomts : i(9:e origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third t:9bpo:smi ( kcharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin andnx az/ ,mle8. )mf2hulb4h7ia charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force hll82h b 7/zan4),uf.axm meion it is zero?

  A copper penny has a mass of 3.0 g. A to69 tcg fgv4yv/g ggu(-1hzp-ltal 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 attraction yuqh- qr 964-hdyh:-spt flht yc/:2*upmjc 5of a fixed *ycyydlc-hfs/uqh put:24 -hjh 9m:6p5 tq-rproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from pf/ 5-poge ,kfrip7; ja common point by nonconducting threads which are 30 cm long. Both7 f p,e-gjfo5pi;pr /k 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 +40e. idlutxv67k .k1atw) v+ s*3ypi 0og3jWhat is the magnitude of the electric fus).adko1 kl*360+iygv7pw jv3 i ttxield at a distance of 1.0 m from the nucleus?

  What are the magnitude ap:on x+-hp mzpfd6x ibi3r4yb2)a (2and direction of the electric field at a distance of 1.50 m from a 50.0-nC cxd +:(zp hfiryn a-a623 pp2b4)io bxmharge?

  A 5.0-C charge is 10 m from a small test chargfij7*;6i *s h5/:p vzocekemye. What is the magnitude of the electric field at the location of the tesic *s:5ifh6z y;km* p/oee7jv t charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction ock 0yc.b*. khrf the electrky*b . hrcck0.ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofz9z ;eug2a g1k the force experience1e ;kg u9zag2zd 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 separated by a distance oa9p9 acz+s0b*iv6t(k2 byzc lf 4.0 m. What is the electric field(+ c0lpb2 vbc y*9az6iskta9 z 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 bs/ ,vl3ry4goa -4.0 mC charge is pl sl/34y,vgr boaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ov;9ozf:lw/k gf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. A;9o kwg/:vflz t what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 m /me pok70m +-mlzfx;xC are placed at x = 0 and x = 0.20 m. What is the magnitu-mo+/x klm px z07fme;de of 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. l n (:c(j9ft-tv fivcs/dou. 8 The last corner is occupied by a -3.0 mC cf clt9iu/(:(nj vcf. todv-s8harge. Find the electric field at the center of the square.

  Consider a square whjiq:)3kktg/5bin.(-knw v mh ich is 1.0 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).k m q(viw5k.k n)/j3ntgbi: h- 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- 3kua+75mq or9 kpkeh uniform electric field. What ishq+9ke3krp5a u7k o-m the magnitude of this electric field?

  A particle with a charge of 4. )bqn j27y:.jg zm;2l5 urknzu0 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 6000 N/:k- 7im pbz5ddf sj-h7z4l /zyC pointing downward. What charge must be plahf57 yskild-z:4 /jbpmz7 z-dced 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 placecqn.)81in9: (k rqmtzpjloi +d insidet 9nio il rn.:pqc)mq8z(j+1k a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10hnsr(5 qqcriy)3yb0/h* uy :b cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0ybh)u*q3ys :hycqnr 05 (bi /r cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wh t5vq/4w 1bvwgg*/anm( e3fd tat is the electric a3 /*/4m bgfqv5(wgt1t nde vwfield 6.0 cm from the center of the sphere?