State the law of conservation of electrikok7co, et 03oi5 cw*mi; 3ouoc charge.

  Is it possible for two negative charges to attract each nd 55p aa7.kt/7xhho pother?

  Is it possible for ase,zbz 7a3a)zn7xs +2/l (l n7wvmkdu positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the procguf/xi 1v .m5zess the glass rod acquire1xui ./mgfz5v s a positive charge and the silk

  A proton carries a

  The model of the atom s ::hyw xl- 5orq+mcg edg 75g20suv8aehows a

  A neutral atom always has09mb*otsesh (mlw;9s

  An atom has more electrons thtyd q+e6hhdruf6hv1csd )5)+ an protons. The atom is

  Materials in which the electrons are er ;b,g1cl:o/ rm1y8rj4sfgrbound very tightly to the nuclei are referred to as ejyfr4b8rg:1 o mg/,sl;r1rc

  Materials in which the electrons are bound very loosely to *lo+mq jfb w41the nuclei and can move about freely within the material ar*qm41o +wbjl fe referred to as

  A negatively charged rod is brought near one end of an unwx .k.zgb p4+ncharged metal bar. The end of thgnkxb..4wp z+ e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pfnye yb+q )juw )03de3laced near each other on an insulated table. Sphere B is briefly touched with a wire q +yne3 d yuew)f)03jbthat is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posi.) awofllc 0m2z f :e;jhjdx(4tively?

  An originally neutral electroscope is bri 6sb63zt l 5y5z6 tys8jnauv8eefly touched with a positively charged glass rod. The etl5u6 yten3z8a yv 6bs685zsjlectroscope

  An originally neutral electroscope is grounded br3d +hybs;zu 3vy 6gok)iefly while a positively charged glass rod is held near it. After the glass rod is removed, the zdb+;u gho)ysy6 vk33electroscope

  A positive object touches a neutral electroscope, and the leaveamf(zk fhh:2wk 6.gf 4s separate. Then a negative .f ka2m wkh (:f4zf6ghobject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged obj5i -wmya**dc5 0csjvm9cma*. ypv3 ot ect 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. What is the final charge ont.m * mwdvcmvp5ioj*a -c9s3 0a*5yyc each ball?

  Charge is

  What are the units ofdezoxa*/ ;t au3 +6ifd the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larf.u-1)hcy5ofebhwgeotx n3( 2 q l//uger in magnitude thaehu3eg2yfb nu// l )qx5-(woh1t.cof n the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near ea l+p1/j dil2l+b yj1ckch other on ay2b1d+jpl1/lcji+ l k n insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I ujgr2w lfzj4 )4juc8pe *eyuq3 9x5c.f the charges on both objects are doubled with no u38g jy2 e4uuqjjxec9zf c)p5lw4*r.change in separation, the force between them

  Two charges are separated by a distance d al *kuc8p+ )upzt(9s;g mf 6sycnd exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are g9;(m us ly+tp 6cpu*8c z)fskthe new mutual forces?

  Two charged objects attract each other with a,mzy8bk-z,yq force F. What happens to the force between them if one charge is doublez,- y8mz, qykbd, 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 proto ql5now0-,0 .lnnpoz7u3 krejn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron nrq5npl .z,kou -jw o30e7ln0is placed next to the first electron?

  An electron and a proton are separatexxj 1 p8h;p3*vst( otrd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placeph jotp*1s (8 xx3tr;vd next to the proton?

  An electron and a proton are separated by a distance mmh6ek4cwrw/r ld :3 -of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?cdr mh: 63/lkmew-4w r

  A point charge of +Q is placed at the center of a square. When a second poi k ax(nnf,gh ,c dk 08mhr+ew)nmp7e)3nt charge of -Q is placed at one of the square's ke0hfx87gwnr(c,3)me) dkanm , ph+ ncorners, 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 positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilater6w*.w x9+rqxq2acdi 1,jqse bal triangle. When a second charge of +Q is placed at one of the triangle's vertices, a .wcq2axq,6ewib9*x j q+sd1rn 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 jc/o-ppw6ff y gi1jsx1*t;f3 not a vector?

  At twice the distance from a point charge, the strength of tg,-jn*up(zw*v4m+hto jxr ; jhe electric field

  Is it possible to have a zero electric field value betweennbyyqv2 w 3f-ivbe-8 . a negative and positive charg- wqnf3y2-y b 8.eivbve along the line joining the two charges?

  Is it possible to have a zero electric log)r:5a: cw *cfr(w sfield value between two positive charges along th la5*)wrr cgcws o::(fe line joining the two charges?

  Electric field lines near psitive point chzd/lpayv*d.hq p:b3. :dua i*qqog() yb8fs)arges

  The electric field shown czc )q- nj.lu,

  Can electric field lines intersecb(cs2um4:l( iginp ilfn:me3j4u a80 t in free space?

  A solid block of metal in electrostatic equilibrium is placqxlp4f)zo6: s ed in a uniform electric field. Give a statement concerning the el:4ofp l6xz)sqectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g5vw+ 2fff8tty : l*bzgive8 ytfbzfvf 2l+w*:tg 5n the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woode-b/rwa7;sj pan table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfa;-rsaa w b/jp7ce?

  If a conductor is in electrostatic equilc s 9;u9ysd*mk,kr0h jibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groui cum4h.l*k ewt.r/ o.4p0qdmyux t)w b,t 8(ended. As compared to the case without the hollow sphere, the electric field at a point dw44 qcp.8xdut eb,u ok.ml( */em.r wt0t yh)iirectly above the hollow sphere has

State three propertiei0j/7ay dm o.5 q8wuzis of conductors in static equilibrium.

State Gauss's law.

  The charge carried by on ily47a /m-hnlzndj45u cga* pw( z(9ze 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 +2.00 mC. Hoivu.o +o m,ll7w many more protons than electrons does this piece of plu, m+7oloiv.lastic have?

  What is the charge on 1 kg of protonz k0w ( ypxc93aojlyt-o (/ov:en+x3g s?

  An atomic nucleus has ale8 jct6m3.y dgyxzx6 lcn9;6)jq ww1 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, have charge v:3tl uf)xb,c)oo .r:8mm0mz w cf8h mzalues of 2.0 and -4.0 mC, respectively. What is the magnit,)83x fm l o):wu0cm8hz tmzrobcf.:mude of the electric force between them?

  A 1.0-C charge is 15 m fruvm,ihn zsi21 c n/0k*om a second charge, and the force between them is 1.0 N. What is the magnitude of the second cha/z1nc*02sm uhnv,i kirge?

  Two 1.0-C charges have a force betwee : 2(o2ly55dqckmvnv in them of 1.0 N. How far apart are they?

  The force between a mw6x d2 um4hf)$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiag 1 krjnse(*/jlly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new sep(jknj* 1 ge/rsaration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firp-uc4s qvhcsz:/ b )+vst charge is at the origin, the second to the right at x = 50 cm, and the third is at the 1 / bcpvus:cq+4s)vz- h00 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 mj(qw2k: pvfskz- n wr4*hy e.2C is placed at the origin, -2.0 m C to the right at x = 5:q 4jvne.k2-f rz(sw2h*yk wp0 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 a,pi sx3ltu38azafwj8:h9kj . re located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 s a p: fztx.u3j 89h3,k8ajlwi= -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 center of a squi 2*dbpnifc6ey )g 92hare, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force oh*i9d2c2gfb ei pny6 )f 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.+,c1, jsw+hy dqam(e4trcl;h0 nC is at (0, 0). What is the magnitude of the net force on s, cd4 ya1jmw,;e(hl+c +hrtq the 5.0 nC charge?

  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 ah4q-k uv/ zj4ot (0, 0). What44zk- ojuvq/h is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pladm3bynp2/a ,(8 admgfb;h2 we5 nn 2jhced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the cha bjd/83na5np hwfnb ,de m2(hym2;2agrges?

  Consider point charges of +Q and +4Q, which are separate.kx3 l u 8ey4vy7nu4vjd by 3.0 m. At what point, on a line between the two charges, would it be possible to plac.8unl j4 3 vvex7ykuy4e 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 +9.0-C charge is at x = 4.0 m. 0qj;cw)pry 2aw n(l+iqt4 ci,Where on the x-axis cai,)a;qcc tw(l0rw 2niy4+ jpq n a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x1ntc)-utbf ;+qwehk/c7 f6ysl : sw 2m = 2a. Where can a third positive charge +q be placed so that the force on it 1:k -cu/+ww7lef m)nyqtbth2 sfsc; 6is zero?

  A copper penny has a ma:+ddx 5h ,7y.yvwi quxss 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 again j an;sk:g:o)ynuetf y9w- 8:yst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pr:)8n-u:y 9tgnk yeyawfo; sj:oton?

  Two 0.20-g metal spheres are hung from a common point by nonconductingssh.l pd, xo+9 threads which are 30 cm long. Both are gip9+d,.lsx sohven 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. What is the magnitude oetl) 0 klxrr6ab:x n+6f the electric field at a distance of 1.0 m f06xnrle:br+ 6ltk ) axrom the nucleus?

  What are the magnitude and direction of theg wzqhg5)s 6,tv2 ryy5 electric field at a distance of 1.50 m fygs6 gr,2yhtzvw)q5 5rom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whq7gjk6.6 6 - tkprczg:xf y1ikat is the magnitude of the electric field at the location of thei: 6. 7kqxfjpk1-z 6gckyr gt6 test charge?

  A 5.0-C charge is 10 m from a small test u y3 i(:q:hdl q 5z5jqkl)w)lj*pfnx1 charge. What is the direction of the electric lqfjih n l(zdjuqk3xq):p:15 w)ly 5*field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud 65kyjpes dcc(m10+/gvi2 lh ee of the fo16hg5d2eciy( 0mk /vj+es cl prce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value o1ir2uwhz/(9p/bow dt f 3.0 C and are separated by a distance of 4.0 m. What is the e /uhpzr1w2dwo/9b it(lectric 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 z;tqp d:mob2f +mo:5gmC charge is placed at the 50 cm mark.md2m;+z: :fpb 5otogq What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thzt6u 91g sda tbim bp0w13n0-ye 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fie91 ybp dmbn06-aztt 3iw1ug0sld zero?

  Two point charges of +3.0 mC and -7.0; rq i86zdh /z)ivxl,q mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bet;zq lq,iz v/r)6xi 8dhween them?

  Three 3.0 mC charges are at the three djm2uxn zks )m9:j+r 0corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of )ummnk:jj920d z+rsxthe square.

  Consider a square which is 1.0 m on a side. Charges are placed at the +vhhxv9m z+a9pam: t.corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, av9+: mtpah +xzv .hm91); +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 pll/ sm18aroqwa:t,3 o laced in a uniform electric field. What is the magnitude of this elecl l/1 q,m8r aa:3owtostric field?

  A particle with a charge of 4.0 mC nqxc9; 2aozgm09v 4e ehas 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 0.12(q -wy2dr2xye 0rev(u -ff*uwnxp l7.0 g is placed in an electric field of 6000 N/C pointing downward. What chadw.e n2 y-w* r(f2uxle0uq xvfp -(y7rrge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -9kd/xq2r p1io0 3t8tk lat3lx2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and dir1/q 20 t ttlki al3krd9ox3px8ection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t0tu8:e6.lwqs j fud+che magnitude of the electric fiel+6f j: wqcdl.tse08u ud 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 sed9ivs4mis9 ib6c .6cm carries a charge of 3.0 mC. What is the electric fie9es.i i 694issdm6bc vld 6.0 cm from the center of the sphere?