State the law of conservation of electric charglz0b*a ngzxtg9m 4i:-e.

  Is it possible for two pv j(:tic8ug/et3fvdc u:16 fnegative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other? (0j-,zuhazwv:r dp40 m su;xj

  A glass rod is rubbed with a piece of silbs9dgo1 m2db6yr sy2 a c:n1,fz ,bfy6h,fy;dk. During the process the glass rod acquires a positive charge and the siyfr,yd1ys2bysc2 ; z d: b9f,m adfo6n,g16bhlk

  A proton carries a

  The model of the atom ydm r2h 1wfga-2d0zzlckq9 o9v r*v,)shows a

  A neutral atom always hasapmvpw;1:b z4vue7-ii9 iu0 f

  An atom has more electrons than zk; d nvga;c* ou2lv0ech 3h6)ugl 4s4protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are nyuhmgkrcot57+-q)1bi w 4 i5 referred to a- 5w 7)mniy qt 5cku1grob4ih+s

  Materials in which the electrons are bound very loqn4ammfj;n * .osely to the nuclei and can move about freely within the materi4; j*fmma .nqnal are referred to as

  A negatively charged rod i 4bhanvkxfvp*/p h*/(7jg o h09ayqk /s brought near one end of an uncharged metal bar. The end of the metal bar farthest from the b*k9*hk/ah avj/yfg q7/np0hxpo 4(vcharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pf96p)f,p+z4mxbr c fk laced near each other on an insulated table. Spf9b)pkm +r6xpfz4 , fchere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge a+ yupp:onfqc-ca2gz-p2m pfz8sj47rwb 8 o.2 n electroscope positively?

  An originally neutral electroscope is briefly touh k9-qdvp wr9q93a6p xched with a positively charged gl9 aq k3-rxpv9hp 6qw9dass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively chaz2glda ctq -q-uyo 65(rged glass rod is held near it. After the glass2c--qqa guo6(l dtzy5 rod is removed, the electroscope

  A positive object touches a neutral electroscope, anaac1,0nmm vb6 d the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?a61m bna,0cmv

  A large negatively charged object is placed on an insulated table. xu izk96 5hb/7fhok;kgqz2f. A neutral metallic ball rolls straight toward the object,h5ou;h/.92fqf7k6 ik b kgzxz 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 on each ball?

  Charge is

  What are the units of the Coulomb constav4 ymi* bu c9qq- j6ra(1tei(lnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by aj54jk -j6ku us hed21v distance d. The first charge is larger in magnitude than the s45e6dk 21huvju k sjj-econd charge.

  Sphere A carries a net charge ee)p7r .hxq 95un mpn/and sphere B is neutral. They are placed near each other on an insulated table. Which statement best dr. exmqp9 5)he7nu/npescribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargesc4hgd 3:)c4m zwv/vlo on both objects are doubl4 ) z/mv3:gold4chcwved with no change in separation, the force between them

  Two charges are separated by a distance d and exi2c(p7 /sc m3wusn,abert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are t(,3ma sucw 7/s2ipbcnhe new mutual forces?

  Two charged objects attract each other with a force F. What happenj1/:(nc day7j8tvxv 6ps0 d+-a eapzrs to the force between them if one charge is doubled, the other charge is tripled, and the separation distaaes 8jdaxt(nv j/p:7 p1yd-r+v az c06nce between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a pro,zd.lod(xce0 ykd jgc (w) (*cton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plozcd,l (*kecc0xjd(d()g w . yaced next to the first electron?

  An electron and a proton are separated by a distanc4l 4c) t,jhzpt w2jgq*e of 1.0 m. What happens to the magnitude of the force on the first electron if a second 44g*lcjtj2 )tqzwhp, electron is placed next to the proton?

  An electron and a proton are separated by a distance +,uyx6 -)ug 6qbzio3po5pq, dx zab,oof 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clos6z )6g-zu oo pqb xid5x+,o,qb y,a3uper to the proton?

  A point charge of +Q is placed at thcn/ smsjyvi2g ,):t- ge center of a square. 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,yjs2/v-tnm)g:g si c, 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 angyeyppfoh+:z 82p ;0h 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 other verticee:82y p 0o; fz+ygphphs?

  Which of the following i ;ijo wnfndjt./:ohrf eb(ku7(7ap-2s not a vector?

  At twice the distance from a point charge, the strwmz a6e7 ;05ych zwb.tength of the electric field

  Is it possible to have a zero electric field value between advthf g475y*7urim4mw+6w5e dz / fjz negative and positive charge along the line joining the two charges? juhztw rw7m fm f7z4+/ig6y5dd4 e*v5

  Is it possible to have a zero electric field value between two positive c3uy97y* d mr qnps.bd64g,y gkharges along the line joinis9uyygq .d,46d gy3n b*m rk7png the two charges?

  Electric field lines near p 2ga)y w.r*k *dku9 9iywxp;ymsitive point charges

  The electric field shown ;q/,t 6ha1zjvlrpp4)m n m1ic

  Can electric field linearf+yh4 stvu - 0qcd36c27lud 5rrqc.s intersect in free space?

  A solid block of metal in electrostatic eqmwc4d cbg-6o o 5/-jmck*,rxko*sly,uilibrium is placed in a uniform electric field. Give a statement concerning the 6yg xwjl cr5d-osmkc/ cmb-4 *,*oko,electric field in the block's interior.

  If a solid metal sphere and a hollo -dpbnmp7fap)ob 4u /ku2 y:5yw metal sphere of equal diameters are each given the same charge, the electric field (E) midway between th 2 po)u/f kpdyyu5:b7pn-4bame center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifogy6fyrf9t 85lfj2 tgvs.,z ,urm electric field is directed straight upward. W.,j 2ygttsr z5,f fl 8y9fg6uvhat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic o6p/qep6.i1p ;/ lp h cap.gfdequilibrium near an electric charge

  A positive point charge is enclosed iih ge:94l 6qwwn a hollow metallic sphere that is grounded. As compared 69l e :qwh4wigto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors iu l0 q.ohhpf6-n static equilibrium.

State Gauss's law.

  The charge carried by one xo6 ; wlddebo*+s7hq2,p7 kzd 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. How q/ ku(0 xpcb98sqtg /o22djgmmany more protons than eledps0ct q8j2(qgxgu/bk m/o92 ctrons does this piece of plastic have?

  What is the charge on 1 kg ofus6l8)bj )pzb protons?

  An atomic nucleus has a chatt,quc u 7opcq.9d ;)xrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepa4edlpz+i-x w dp(p0; prated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Whl (p+dp-;d4 p0 xziwepat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sn8d82+efs w2*l mo 7/tpz1iiam/ vjsc econd charge, and the force between them is 1.0 N. What is the magnitude oov+ls stm7/ 8pin2zdmf*ej8w21c/ iaf the second charge?

  Two 1.0-C charges have a force betwwtez(/a ek, 0leen them of 1.0 N. How far apart are they?

  The force between a 0y;a1zet xi(: pbwsby6h2jc9 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, eq598t7a8j smz 2ao/u 1flraldxperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fotaf a98d muo1qj58az/rs7 2l lrce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first5e,upz 9gq9nq 45j gmx charge is ag4p qj,gq9 ezxm5 5nu9t 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A wvq y 9bcfb9o4/mfj9 5 ,+izlzcharge 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 db,v9 q+yzfjw99boz /icmf5 4lirection of the electrostatic force which acts on the charge at the origin?

  Three point charges aw.6 sv dxi/0pe.yy)vrre 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 v es6x0 ypydw.r)/i .vof the force on the 3.00-mC charge?

  A point charge of +Q is placed at tr je t64t7r k*ay4:rtj-(gcse2dew. r he 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 dg(.tjjry s 4 re*kwec74:6a -ert2tr2.0 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 = -1.1njc 6dofl h+bbjr )1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,r+.j nbo1 fj1hl6c)d b 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a hnxmuq3c9 mdx,:k0+ kt (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 charh 9 nm03uk kcxmqd:,x+ge?

  Three identical charges of 3.0 mCip5ih a(7qkkx2dnw. a rl2/2y are placed at the vertices of an equilateral triangle which measures 30 cmkd(2yk22w paa7xh5r q/n. i il on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which7l2gp6dka c(vh 8iv- -ev- wzk are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q sucheadi l72gv8-v-c p 6 kzhkw-v( 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.+ dyv25xgdgdqwf*z5/k 87ss9coj p t40 m. Where on ths5 *qddx4tg/c+vyfwzs dk 27o5p9gj 8e x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charyvy/:q hc)nb004 kamege -q is placed at x = 2a. Where can a third positive charge +q be placed so that the f0k/)cn mav0b:yeh4q yorce on it is zero?

  A copper penny has a maszmvwb.md- 5 7us 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 attractionqfq 6 b*hy(dtxu 3d)9zk)xj-p of a fixed proton som -3bz*) hf9x u 6kq)dyqp(jdxte distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting fs k8fdzpjwrv v2)mw0 m2 7j.(threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads isfwr(8k0 wm2)pjj 2d s7z .fmvv $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magn:zt*um8g)+ muzh z;e nitude of the electric femn ugmz+;z 8*u)t:hz ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direc vl4ybo2s;1 +b)gslef tion of the electric field at a distance of 1.50 m from a 50.0-nC cbg)y24elvbs l fs+o ;1harge?

  A 5.0-C charge is 10 m from a small test chabso9o6+ ;kdvqj(,p + e(mgvl6mzxmcjd 1ng 08rge. What is the magnitude of the electric field at the location of the test charg6ecds 9p(gx;v6dj(nq ,+vz+blo 1gmk omj80me?

  A 5.0-C charge is 10 m from a small test charge. cxqvmoldb.6f4ha 9 771+:kzr* uc* mw:c apsk What is the direction of the electrix4pm+ 6k9clcf7w*.kc1av arud*o ::b shmz 7 qc field?

  A 5.0-C charge is 10 m from a small tjotq 5:cou5 +z0c( ietest charge. What is the magnitude of the force e(5 etzc:u+o0t5jo qicxperienced 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 distance3ybpxjdg, j3f9-k *s,bgrjp. of 4.0 m. What is the electric field at a point midway between the twy9sd,j3,g.j*gjkp-3r fb xbpo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mn2; xqx worr0e-cswj4u 19w1z eter stick and a -4.0 mC charge is placed at the 50 co x19z2nr wxqjs1cw;-u4er0wm mark. What is the 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 -4uad*a 7w2p(rswca+f: )6ss k x.0 mC charge is placed at the 50 cs7da:p*r) a2 sw+au(f6w kscxm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC anbdarq 9 tmb 4 bey2r(:v4qyb92d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway be99bt:q vdmb4(ra4yy b2r 2 qbetween them?

  Three 3.0 mC charges are at the three corners of a square of side 0 do53me6cp,iuzw7(a d .50 m. The last corner is occupied by a -3.0 mC charge. Find thcowdzi 5p u(me,3d a76e electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Char8du03bxo :iul ges are placed at the corners of theb30oi lu :xdu8 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 the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pl8cf 4e:m2 mebhkttr. 6:k8okrzcbf9 ,aced in a uniform electric field. What is the magnitude of tbm9.8k:mz t f ,8ecko: k c642hrebrfthis electric field?

  A particle with a charge of w1+jc,/ hc,ux kns u.r4.0 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 field68lm f- xur2zi of 6000 N/C pointing downward. What char 28rzu lf6-imxge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a char4 dvc/ 7;deu ielh8ynas0i*2zge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the fy;7i a028 uvzd4lsee *ichd/norce 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 the h2s2:agd+l vj magnitude of the electric field 5.0 cm fromsh 2jva2dl: +g the sphere's surface?

  A metal sphere of radius 2.0sl0 jna c 1/h8e ed8fbaz1:8pr cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the centere /b81l sa0 1cfahr:ep8n d8zj of the sphere?