State the law of conservation of electric xbd+s nm+3j a21 0rfohcharge.

  Is it possible for two negative charges to attract each other 0aq(xtmtr3 d 2ky*l law)fs1-?

  Is it possible for a positive and a negative charge 3:g4m17afydom d -upl to attract each other?

  A glass rod is rubbed wiw t a.kz1qn73l68wudm76 vmkgth a piece of silk. During the process the glass rod acqui8zq7va6twg.1d6l unwm 3kk7m res a positive charge and the silk

  A proton carries a

  The model of the atome)2f c.gd6 ukm shows a

  A neutral atom always hasf4 pi2m u4x0qk

  An atom has more ele7g2htfpoa 7 c(e vu*y6ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ra vd w.,ee6la/eferred to a ede/wav.,l6 as

  Materials in which the elrmuk- ohbt *x*;n im4 y .wvr6z/gj)2yectrons are bound very loosely to the nuclei and can move about freely within the mateh62kz vgjo*./tmnrbuy; w*)-myr x4irial are referred to as

  A negatively charged rod is brought near one end of an unchargeb4)a0pw:d 9*vskur/juq ar. wd metal bar. The:ad 4/bp*q9rjrws.0 uaw uvk) end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chajqno)-vspze r-b:p we5w9y56 rge, and sphere B is neutral. They are placed near each other on an insulated r e:b-vp-enqz )6jwpy5o9 ws5table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivec8 hyt9t8a4qc dv( :xgly?

  An originally neutral electtka( 6ky+ q( qfz/:wmi4sud2 wroscope is briefly touched with a positively charged glass rod. wd(z6kkt i/4:fu2 aym( wqqs+The electroscope

  An originally neutral electroscope is grounded briqd piwxge4yge18e9.vr r/e 53efly while a positively charged glass rod is held near it. After the glass rod is removed, the elex/e5e ege3pry9d vg.rq i8w14ctroscope

  A positive object touches a neutral electroscope, and the leaves separate. w;v9h4i( w ybcjfc v*4Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves cj*viwb4 94c(; wfhvy?

  A large negatively charged object is placed on an insulatexolpsd )x ,znqbzg c2(hg;2a5d7,8pf d table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metb,dg z5 ds)ocz2fxng q2,x8ah(7;lp pallic 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 constant bwij/b+5ev2 s$k$, which appears in Coulomb's law?

  Two charged objects 3+zqxsmq y -))kglv+s9 xkqq9are separated by a distance d. The first charge is larger in magnitude than sqzvxmlq)qk- 9)3ykxgqs9 ++ the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nekpl,5*;c .ys*xlo*ygxlknh4 ar each other on an insulated table. Which statement bes;c ox4k n**,k*pylhx5 l.sglyt describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If+o3qv yft ;wp, the charges on both objects are doubled with no change in separation, the force between thep v;oq3 ,wf+ytm

  Two charges are separated by a ,givc k0q2)ifh*fx9mdistance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3,i2x c fmg h,ivkqf9*)0 what are the new mutual forces?

  Two charged objects attract each other with a force F. b8o 6fo)/gig insy6hec.enk1+eefap q+ -8l3 What happens to the force between t gi/-). nlo8esha8epenb c1fgi 66+3o fky+eqhem 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 te-b8 jedh3v;gb 8ll *separated by a distance of 1.0 m. What happens to the magnitude of the v 3ee db;-hlb8j l8tg*force on the proton if a second electron is placed next to the first electron?

  An electron and a proton0o j tpdq :kgabw.3.io2p1on ) are separated by a distance of 1.0 m. What happens to the magnitude of the force otpoa q1n:k.)biow2.j o gpd3 0n the first electron if a second electron is placed next to the proton?

  An electron and a protzzam r,5shb(n tif,cw(m:7xi1-(a yton are separated by a distance of 1.0 m. What happens to the size of the force o m- nt i har17,(5mcf(zas,xiz: tybw(n the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the7rg5:lhemf cnw + 4sr) 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, 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 chargh4) wr5 sr7nm:c+lefge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilat (*w94r/mi, u7 hega)9wup v9mwzkepteral 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 p)9/k eu*wm,t7 ehuwa9 rvi ( mzgpw49the 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 not a t4l* zr5q a0nvl6rx ,xvector?

  At twice the distance from a point charge, the strength of t/mp;r-l gdnd tv;4z7k he electric field

  Is it possible to have a zero electric field value between a ne ek 23v9.sva3mh mb2omgative and positive charge alonvsmv.3 eham2b2 mk3 o9g the line joining the two charges?

  Is it possible to have az w3hyt: oh;lb )p8z gsn+ )jm+ybr0)b zero electric field value between two positive charges along the line joining the two ch l+bn w hbrgz:y b0ztjp3)my8 )+so;)harges?

  Electric field lines nea7e f nm0j52yb0dq;le2fl ij(cr psitive point charges

  The electric field shown rj j(fy3-y:zpk.y91 -gjo*gxe +h hrh

  Can electric field lines intersect in free spacekmm+m.;ux l;t)4 7pl8fc ir ibc5vy0l?

  A solid block of metal in p/+n8/di(*awm mpzy melectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electri ym/ 8min*dawz p/+p(mc field in the block's interior.

  If a solid metal sphere and a hollow mendnf w l2mxh9+z+e5 :ital sphere of equal diameters are each given the same charge, the electric fielwm+i2 5 nn:fzldxh e+9d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform )wk 0msmn,r ./ e05bq)msttwq f31wlaelectric field ws0bw 5qk w/lr)et,n mmm3a)q1tf s0.is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equibn9jfl3o docl2n)v *zxr- (s 2librium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere tw 9v6e :t5disqhat is grounded. As compared9 v5wqsite: 6d to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiezz1e4wf a1p.m s;fkq /s of conductors in static equilibrium.

State Gauss's law.

  The charge carried byynd 1xhz;+pfz( f- :zr hxfs61 ;;ljv;)viqtu 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 +2.0m*uxvqrg 2l95f+t 6k fbkb0 hz.c0q p60 mC. How many more protons than electrons do kpq kbqmzh69cl 26txb 0r*g5fu. 0fv+es this piece of plastic have?

  What is the charge on 1 6f.jd6fcjm( doy 8sk) kg of protons?

  An atomic nucleus has a charge ; a 6nbm*cwwyqw293ykicua7 +of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatr/96 cdkds6z,4 j 5 dv0ydszyled by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the e lz6/5 yjd,vzrc60dky dsd4s 9lectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is q/l 4bcg;er(z3fy3ld1.0 N. What is the magnitude of the second charge(/lzr3efd gc4ylb3 ;q?

  Two 1.0-C charges have a force between them of 1.0 N. How far apait:z w,e ;m3n9ybuetv ( jy4+wrt are they?

  The force between a ,;.pt6o 3ogd(wlrt kr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, init v 0/a glvhqpu6b*bqz(5l k*3tially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is t6z atl 3vp(uvgql q*b 5h*k0b/he electric force between them?

  Three identical point charges omhgy0h 0kb-.v( 2 nqbnf 2.0 mC are placed on the x-axis. The first charge is at the origin, the .0ny( k2qhgbm0b-v nh 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 charge of +2.0 mC z 8fl .pa9d .zdul(xp9d* p1g;k1hydw 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. *1z9hy.dd(;pd1p uxlad8kz w.flg 9 p What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positpr).26j,qpgcse qp(r hcx)/dqqym6:- ow+mvions: Q1 = 2.00 mC at x = 1.00 m; Q2 orx)6qr2(e)vdcmq.qh c pg/- :sq wmp+y ,j6p= 3.00 mC at x = 0; Q3 = -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 square,w7 exh;mt twkz.bq-d 6a /vj;.w gh*r. and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrosta h.kmwv tr.7-z dxweh g 6tw/;*;qab.jtic 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nyx 3flh2 3s-+g yiavp umm+3 a)ta*8ksC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chax-3lsk a y+yh sgtiv3fupa8m23m +)*arge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q7 yx1pvn2efjz af: 7w.2 = -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 2p7w fyx 7vz .nf1aej:the 5.0 nC charge?

  Three identical charges of 3.0i7dm9.zbc 4qz3q x4 uw mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitud quq3w bxz 9.47m4izcde of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At w4vf6 jid )o )k4rpmug:hat point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be kvu ):dm4op i6g4rf) jzero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whje;c3r pt-1r cere on the x-axis can re; trpj31c -ca third charge be placed so the net force on it is zero?

  Charge +2q is placed )ow9ho6h 7rh( ieib-pat the origin and charge -q is placed at x = 2a. Where can a third posi(9 hw)pehh7io-r boi 6tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0-.4jt+evw*iasj 1v8 txymfki9jf (1r 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 for7gytx0shm 6( yce of gravity by the attraction of a fixed proton m7sxt h(yg 6y0some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres arqt0of,n-tyn2y164 bb1tby 1tk zt uhr38yb 8se hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forcesbytuy 4ynty-8 ,0skq8nbo 2t1t 1z16tb3brh f 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 +405,qy3uwu4i sn e. What is the magnitude of the electric field at ,uqyn4 5suwi 3a distance of 1.0 m from the nucleus?

  What are the magnitude and directio9ttlp 8x(d4lgg.lk g+n of the electric field at a distance of 1.50 tlt(lp+ld.9g4kxgg8 m from a 50.0-nC charge?

  A 5.0-C charge is 10 mogcj,x v*p9m lf* (f: y,w,m-c3tlp9a op7naa from a small test charge. What is the magnitude of the electric field ata7* , gfn *j :p(pvwxlf9l 3oa-oct ymacm,9p, the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di.ozm)3oy . svirection of the electric fiemoi zo sy)v3..ld?

  A 5.0-C charge is 10 m from a small test charge. What is th i.ix9ldqq+ds o8l0:w e magnitude of the force experienced by a 1.0 nC charge placed at the lociilq+oqw sx: 9d.8l0dation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a 2dnp)9squk dmn76j0p distance of 4.0 m. What is the electric field at a poiq )7spj0nnkd26p 9mudnt midway between the two charges?

  A 5.0-mC charge is placa iec2v9ll):fed at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 ll v:a 2ifec)9cm 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 h*pba iyk-fjg2,fx0,b *dor 8meter stick and a -4.0 mC charge is placed at the 50 cm mark. At wha ,h*,-by prgjkx db fi8a0fo2*t point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC aoz3 6fa 6zehu56:l9 x7czvaa end -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the elecl e69faza356oavuzz 7 :c6hx etric 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.tj)yx;w v, 8sqdli7k . The last corner is occupied by a -v7tk),qd i8xlj.wy ;s3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 muus.cd 2 ht9xqg/ 8hy6 5 dpt)li*zao4 5xm;pu 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 at8uty.q9t256auumco pp*5 )xzdx s4hg /l dih; (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 ljdqtjh2x :q e3hk371o6 4jv 8s6ocran; gyb.it is placed in a uniform electric field. What is the 8hyv 3nx .7a qh3dcj2gbe: q6ts ;l1o6jkrjo4magnitude of this electric field?

  A particle with a chargeu7cm( e.nnwh7ub smie s735l1o/n- mt of 4.0 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 field of 6000 Nu-e;ddq5lh (d a*1xmt /C pointing downward. What charge must be placed on the ball for it to be suspelthu-md (q x*;a dd15ended?

  A foam ball of mass 0.150 g carries a charge of -2.0bvg dho:+,q/ j0 nC. The ball is placed inside a :od h/j+qbg ,vuniform 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 10 cm carries a charger b8n mf7er;cj.e f5p0 of +2.0 mC. What is the magnitude of the ;frp7f.0je b5 rcm8 enelectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car3 t n-c ui:tzwa6ox4,qries a charge of 3.0 mC. What is the electric field 6.0 cm from the centexquw :3n,4ot- 6iztcar of the sphere?