State the law of conservationibhl/7w .8)gss o/lhl2c3pf o of electric charge.

  Is it possible for two negative charge:ql-60u ol fmgs to attract each other?

  Is it possible for a1 jf3shh/3 sp j+jy 2csxvuc6( positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pk iqdr/byh+4;kvftl*o4 ;:a v rocess the glass rod acquires a positive charg;a4 i*b:hko vfq4v/ry td kl;+e and the silk

  A proton carries a

  The model of the atom show/ /d,0 bbm(mu7enpx vjs a

  A neutral atom alwayu .4x99e69dpikqu kbms has

  An atom has more electrons than protons. The atom t6kn0taguf)r * i5 vj(is

  Materials in which the electrons are bound very tightly to the nuclei arem h,, g3j+aure 71vojx referred to u,jgj,er71 mv hx3 o+aas

  Materials in which the electrons are bo+;*pyb2 uiycpa zwp:jy97w0lund very loosely to the nuclei and can move about freely within the cz:a7uy9+i * 2w jplpypwyb;0 material are referred to as

  A negatively charged rod is brought near oneolm po-:8wlfl04sm id6-i7x g end of an uncharged metal bar. The end o-mxl glfi6im-: 7p 4s8ool0dwf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are p9cc+5vbct)z9xt++hgyxs9i ( ;fq gb ylaced neaq;zt y bgf5+h+x y(i9x g)+ cv9tsccb9r each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively char v5:rgo6ac*/v: ;l7dqla zt*h nq bn4qged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positive5t6rz exlj,2x 6ak+ay6n kmexwvs)4, ly charged glass rod. The electroscopmlvz56s+4 kj ,r6,etx xkawaye6 x2n)e

  An originally neutral electroscope is grounded,:(5sm 9 a v-jbactn*.fywdg j briefly while a positively charged glass rod is held near it. After the glass rod iv.n dcmtwg9 (ajbj f*as5y-, :s removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepvj0+ : covzzd6 2p;vbwvf+af0p xf.c7arate. Then 7z:;+fvcvx0b 0aj cdpwvz 2o.fp6+v fa negative 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./i f10eu/rlfx ue*uz; 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 fi 0/z lfx;fuere1iu*u/nal charge on each ball?

  Charge is

  What are the units of the Coulo3.h/8vuac7gxjxqnidp 0p 9 5jmb constant $k$, which appears in Coulomb's law?

  Two charged objects a *n--qwnohe zadh3 ;o7re separated by a distance d. The first charge is larger iznq-; odh3w-*7hne oan magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla 3*nh bhvh2wxd0d3n+vced near each other on an insulated tableb*hhn 3n0 dhxw+3vd2v . Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If trfxbvt:+ y:mk 5n9;1q bx o*c nu0:zsl pd8la)he charges on both objects are doubled duplotn :vas ) qy0*xr5c 9;b:fbl+x81mk n:zwith no change in separation, the force between them

  Two charges are separated by a ;nav.t,7 kikyt52.axyau y j+distance d and exert mutual attractive forces of F+n5. j7vu2tyk.ya,iayk a t ;x on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each o20orhsu+ p.osp (2fk8fn o0rither with a force F. What happens to the force between them if one charge is doubled, the other charge i+s.oo(8h p2iroskf 00 2runp fs 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 separate0w2h liu(fra (d by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first el (wu(af20rlih ectron?

  An electron and a proton are separated by a distance of 1.0 moprqbl2y oj 9sw8 9+e0. What happens to the s0po 98 2 jq+yl9breowmagnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distex1qvmdm 4..rg o9 ,ry1 gz5 atsda8/zance 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?e1.gst4q 9za85azx,g. odd/1 yrvmrm

  A point charge of +Q is placed at the centesm3,zi,oc- g cevok) )zj,a:zr 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 squarej3oaz-z,z:ckm ,egvo) cis),'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 placedo )bxpycrq5 3nd:sw1)xr :e r* at the centroid of an 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: b)xr rxd 5cp1s*:rny3o )qwe vertices?

  Which of the following is not a vecto:( cg:gc y rkfbjd7m3/ hg1js(r?

  At twice the distance from a point charge, b kbwq 0xxz 6(pu105at3ik4 akthe strength of the electric field

  Is it possible to have a zu2f7el*p)e:hw:j 3gd hcc0 yfero electric field value between a negative and positive charge along the line joining the: fj hcueplwdf3eh:70* y2)gc two charges?

  Is it possible to have a zero electric foqo 4 u s.,p-4brhsgi*5/vsrqield value between two positive charges along the line joiningsrsgu*.o v,-45qohrp 4ib sq / the two charges?

  Electric field lines wu:9)qrblv jsw(fq *+near psitive point charges

  The electric field shxu;xuf)u mj)- own

  Can electric field lines x;t8z,2r/bcc pvp(vej6h3g b5(esvcintersect in free space?

  A solid block of metal in electrostatic equilibrium vf8 fd)4kd.l zd 06mbiis placed in a uniform electric field. Give a statement conf60f)v 4.zb dkdlim8 dcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacpq mw1ai l18aw c76iw/h given the same charge, the electric field (E) midway between the center and the surp1iaiw17qlmc ww 86a/face is

  A cubic block of aluminum rests on a wooden table in a regf:q fbw 1qt50vion where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfactqqw01b :5vffe?

  If a conductor is in electrostatic equilibrium near an electric c9vy3 ldx1lx4j+5 kjl3 9yb)oekhn9f oharge

  A positive point charge is enclosed in a /jt 85e: 2kjc3fewi4ztts o e,hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphereefsit, jt:8ce/k 5twoz2j 3e4 has

State three properties of conductors in static equ5ms26b ijuh0ailibrium.

State Gauss's law.

  The charge carried by one electron is b lr(m21acg4w *u14a +vt ljtc$e = -1.6 \times 10^{-19} \; C$. 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 many more protons than elvhr;., rp*u 2o ivi3ozw2e 9qpectrons does this pieuro izw2o* p;r ,9.vei2vq p3hce of plastic have?

  What is the charge on 1 kg of phr9 pc4iha3-6,e mmdrrotons?

  An atomic nucleus has ab1-2i9f sq ,,f+ghqb/gowe u b charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatfv3+a azxe*xe x6x,pf- po)4f- 8xl/piteid,ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What ii- f8e3ax ftp+d*4 )el e,,6xzx/ ifp-apovxx s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is+e((knp ( r;zl yoe,qp 1.0 N. What is the magnitude of the second chargeo( z( lp,(ek;p+rqeyn ?

  Two 1.0-C charges have a force between them of b9-grzr,u/f gddt b;21.0 N. How far apart are they?

  The force between a /pyud 4 g*mqwb/;vlj )$30 \; mC$ 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 force. Ifjb)hap1d6v qao4 5,o-m+zyey they are moved to a neqdajybe 4vm -,1+ zp ooa6)yh5w separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placeduo k3yo-d9t ie:/rl( l on the x-axis. The first charge is at 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 chargedkol 3:(- otei9 r/yul at the origin?

  Three point charges are placed on the x-axis. A coz(o g+z:p(yhharge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm( :p(+hz zoogy, 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 are l6(jo grym;4kev1l s e.ocated 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 of the force on the 3.l v;1rs6jm(o gee.ky4 00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seco*bm-ssr paph5ja87 to i* +h,cnd 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 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-lefts *r58htmcj*b -+hasoip a,7p corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0j:h/nl rw;5n1 hnqm4x.10 m); Q3 = 5.0 nC is at (0, 0). What is t/ jlr h;1q:5nh x4nnmwhe 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 at (0, 0.10 m); Q3 = 5.0 nC cvc h y tuzghh8y. -we3hk69(,is at (0, 0). What is the directiowch8khgv. 9-e6ty3h c, (zyuh n of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are pck3o fdzo1 yrhz 6wen02*4/vhlaced at the vertices of an equilateral triangle which measures 30 cm on a side. W412w hf3 zzrv*h 0nykeo/odc 6hat 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 3.0 m. At9h1 bw5k.vm u ija(r7m what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting(5kvw9u1j i7 bmh.mra 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. 2dv qmz8bt,b2w 4 9xzcw;av++b z vg2pWhere on the x-awp z+29wqmb2 x8, vzdbvga;cvbz+t42xis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed atdc b.2c7+in9jrhdvp; the origin and charge -q is placed at x = 2a. Where can a third positive cn djch7pr+c2db9. v;i harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A ta(o8u.u9 3j nj x;*wwajf*bn azdzb+ 8otal 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 fortff5(e i4s1om ce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is teo 5 f(tisfm41he proton?

  Two 0.20-g metal spheres are hung frompac*s8fk,j 4gj2 *gi7wu 5bfi a common point by nonconducting threads which are 30 cm long. Both are given identical charges, andfjf5cii 8 uwgb k7*4g2p aj*s, 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 of j.kub0 bu 5i1pthe electric field at a distance of 1.0 m fpk1 u0.buibj5 rom the nucleus?

  What are the magnitude and direction of the electric fi*brb 40s8cdt kpxq+q*eld at a distance of 1.50 m from 84tbc d0q bp+s*q *krxa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test19nq*vq/x6cqja bxwv7e 8f z ( charge. What is the magnitude of the electric field at th1xfx8e 67cqv(nq vwab*9q /jze location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of ta;etx 5):8lhtlkqh(/6 fecythe electr :/5)htlelh8c kxef ;6a(qyttic field?

  A 5.0-C charge is 10 m from a small test charge. What -+vf/ jxkcg:mq ogq;(:,g w7oeer lr( is the magnitude of the force experienced by a 1.0 nC ch/-qx;glqcmo v7w,(o::ggk +erf erj(arge placed at the location of the test charge?

  Two point charges each have a value of 3.j -crs.*kg wnd9d7col y/6e8 k0 C and are separated by a distance of 4.0 m. What is the electril*79k s8cnd. g/r-ocwkyjd e6c field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm markge uakh ,:wr+4 of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What isg wa:+khrue4, the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of and rt;68hvd t/ 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 6tnhd8;t rdv/electric field zero?

  Two point charges of +3.0iw r*r5e.( h3q7ckk tbe .o2giybu*2b mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What iskr7*quc.i3 2 k bgwerhot*.5e iyb2( b the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners o 7 dtk8 eo9hdz)pz.0btf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the czbh ddzpo kt 978e.0t)enter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at h7ns tn(j vs35,t1nna o-apx 2the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); t5s jnh o( 1-nn xtv,p73anas2 +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 placed inl* q)xdcot c008.scdo a uniform electric field. Wha8*ccco dx)0.tod 0lqs t is the magnitude of this electric field?

  A particle with a chhp12epi:db(nuq9 i i1z.q)5c wlur -yarge 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 mas t /xa,/kxo..m5efejjti-uh5.wyf h5s 0.120 g is placed in an electric field of 6000 N/C pointing downward. What chargh5ywmxatifeje h./u5j. f,x o 5-./kte must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 g sn 0ldd2a78cnC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity.land gc8s 02d7 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 magngm ( bk,iw(1mxitude of the electric field 5.0 cm from the sphere's sui1( k ,wmmgxb(rface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e gcy8 ysr5e0m,lectric field 6.0 cm,c8 msey5g0ry from the center of the sphere?