State the law of conservation of electrijd; 9 -,dbcnydc charge.

  Is it possible for two negative3 rktc1f-8fb f charges to attract each other?

  Is it possible for a positive and a negative kl aw*ps53u 5eb9 oq6j hy86vxcharge to attract each other?

  A glass rod is rubbed with a piece ofdj/ eu1o1 xgbrs2/of( silk. During the process the glass rod acquires a pos/r2d11 e(o/bogsxuf jitive charge and the silk

  A proton carries a

  The model of the atom shows 6g o0 9qfotmb:a

  A neutral atom always7uo0vv.3bo:xpx b f+k; l9 z:jzn;oxy has

  An atom has more electrons than protons. Thexmb2l8hgu t xb3cr m7z*.wm:; gvv4 w6 atom is

  Materials in which the electrons are bound very tightly to the nuclei are re7eco1 -fg58skwi j kb6v;j1ahferred to 7kh -kovf1j1 wes5a; jibg68cas

  Materials in which the electrons are bound very loosv rf oenf+i(,n k7 p+jtqq3f3fx0-5sr ely to the nuclei and can move about freely within the material are referred to 7-qp50 , ie 3rvj(nfsf koxrqtfn+f 3+as

  A negatively charged rod is brought near onunp 4e(wxs lr+f8x4p 8e end of an uncharged metal bar. The end of the metal bar farthe 4 +pxpne8srwf4(x u8lst from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. *p az p;xz:)mxh38v7hgasx jn9g ahp32 -cat9 They are placed near each other on an in)na9x zhg p*cph3gax-9ta8;msvj : z23pxa h7sulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope k rh- ,l/)0uqmyaou ,)oqv+lapositively?

  An originally neutral electroscope is briefly x)zg( l)gog 4 76bve2qk nwc7dtouched with a positively charged glaskqzggdce(ol )n4gw)76v 7 2 bxs rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positive s9.xfi4 2ygnoly charged gla .oi n9xy2g4fsss rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leoon;gs o8 -9ilaves separate. Then a negative object is brought near the electroscope, but does not tn;8i 9o gsool-ouch it. What happens to the leaves?

  A large negatively ch+o.h wx epcv32 qyx 5k-au5swtcn,9j.arged object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops j5cw.kp, cy+9 q -wntvh25uoxaxs3.e 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 constz0s ;/fp/fdnqf7gr2 e -+ hnfrh5ki/v ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstwtk5s(s05 qmkhquj qdbe3nb) .* .u ;s charge is larger in magnitu b(. e0 qqd )u5 smnb5*k3wsukjsq;th.de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. zsls ps3b-pj +9-3drdi25y wx They are placed near each other on an i23+xslp5y--d9d ir j3zsp wsbnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otqcf(js.g) ql :her with a certain force. If the charges on both objects are doubled with gq)fc l .:jqs(no change in separation, the force between them

  Two charges are separated by a disk zc1e9fefu/uk( aqk2fc 5pk8 *(4csfkb ,f.xtance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are tcak b(9fkfpe (f8c4.k c,uf/1 *skf zuxk eq25he new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forcd*egxcnsn 7edf 305bt ;3 .d5cbjf* bme 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? Thdmn;eb7jgbe5 d*xsdt.fbcfc* n 3 530 e force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. na m47zu097b p9 44t b4nekx-dwqmotk What happens to the magnitude of the force on the w ku7z44a4 bmnkq7t m0tbn9 p-9xd 4eoproton if a second electron is placed next to the first electron?

  An electron and a proton are 9k i60qga 6kajbxc b85separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electronga6iq bkk6a5 0cxbj9 8 is placed next to the proton?

  An electron and a proton are separated by a d dhgm fu 6zf.ej)-8dh(istance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 fhj.()eum-6fdhdzg8 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second 5+0g3z 9wlrw h/ 4boao :imitepoint 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/9 brzm:5iwtg3oae l+4h 0oiw 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 pl .xoa:1ve1pg vc63r gdaced 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 taxg reov 1c31g.pv:d6 he center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vbmedd*9 p* qbm6 1owq:ez*o7vector?

  At twice the distance from a point charge, the strea4cgc fd2 iszh0y6.2.l cgr9 m3lka he83; yljngth of the electric field

  Is it possible to hav ,h hl pw5qdiim,bp/ u/m1.5cie a zero electric field value between a negative and positive charge aloi.w mi ,ucpb5hd5q,ip//h1mlng the line joining the two charges?

  Is it possible to have a v.y4+g dw dyg7zero electric field value between two positive charges along the line joining the two chav4 dgyw+7d.g yrges?

  Electric field lines na 8(3(ofis-c 2bj jputear psitive point charges

  The electric field shl rmosp 8jqz(7 ap (9ugn( kl8fle:5e9own

  Can electric field lines intersect in free space?5 +n7v 3fv jyhj;hyv+asy)/m x

  A solid block of metal in electrostatic equilibrium is placec8 wbz.f+j.sj d in a uniform electric field. Give a statement z.8bjwfjsc .+ concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar rk,b9p/zn dh-e each given the same charge, the electric fi9kbnp z-/r, hdeld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unagu9baw3z ,3 idzod drc27b7 /iform electric field is diwub /7dcrd39a,d 2zig3 az7borected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c/ 1g.h /erpx pev7n.gsharge

  A positive point charge is enclosed in a hollow metallic sphere t ai0ybe: 1r0u7tkyhl6hat is grounded. As compared to thaty6re b 700y1k ilh:ue case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat2ju p4 rsss4m,t7csw -ik9hjpk5j5/v ic equilibrium.

State Gauss's law.

  The charge carried by one elec4xnx nf ke:vt13ntp/ 2tron 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 m7zsgve- m+lh u d45;yjany more protons than elel+7z;jved huy g5s4m-ctrons does this piece of plastic have?

  What is the charge on 1 kgd/r8p x eke.5e,zqm4 k of protons?

  An atomic nucleus has fj, )vyh0kd;uhx*mkb2 p1r h-a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by6auko5yp+a n n2u3mf2 1.5 cm, have charge values of 2.0 and -4.0 mC, respeckfoa+52a 2u3nn 6yu pmtively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forzp9+ p*h-roi l(kz t7grn9 )sa-m1es ece between them is 1.0 N. What is the magnitude of rt7( hn+e9ri9-eplo1s*z s m -zg ka)pthe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f 6bd gtd5;zja8e( :ougar apart are they?

  The force between a u)+x/nqiq aye(- 5 ycr$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ap4er2,.xvmda ik sq6h9cp:z:nart, experience a 1.0-N force. If they are moved i2dc96s, zem .4qnx:pkr: ahv to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of (w*4f f npuf4f.)djyf2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thirufpnf4(. d4wff* fy )jd 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 placedgw +llmtr8 ..c on the x-axis. A charge 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 direction of the electrostatic force which acts on the chwtlc. r+8.ml garge at the origin?

  Three point charges are located at the following posit xcyk5cl 1- n3c0jzb6cions: 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 magnitude0c xb5y j c1z-cc6k3nl of the force on the 3.00-mC charge?

  A point charge of +Q is plaw+ xm ac**006aoiqfi dced at the 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 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 +wxqdif 6o00*maia *cis placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0n u) o91. xk/1b akzl q3xwbxl7hh+oeifv2a28.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitudeb29.iqvllxh+18fz 2 7k3)oxka1 nwu/oeb ax h 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 at7 fqlob z;xd,( (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direct;7zb( lq d,fxoion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of accyon50z1fqd x* 8wv)n equilateral triangle which measures 30 cm on a side. What is the magnitude of the el)*x qczw8c d051yvfn oectrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m.3 cqqd+ nd:1kr At what point, on a line between the two charges, would itqr nk1dc:+qd3 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 the origintf cttzzipv3v-7uj ,)o cq9; jc9(tn1 and a +9.0-C charge is at x = 4.0 m. Where on the x-axu tq7-, cv1t inj3z;t9c(p zcj)ft9o vis can 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 dikr0k48,k x kat x = 2a. Where can a third positive charge +q be placed8d kkx0r,kk 4i so that the force on it is zero?

  A copper penny has a mam daoob0y /a2.ss 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 gravitxt g-ao:1 fpa0y by the attraction of a fixed proton some distance above it. How far above the electron aop:-0t afg1xis the proton?

  Two 0.20-g metal spheres toqino5 bx)zuk f 1v 0eo)r 51dt2i47sare hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untoz54e)x )tosf ku1qo 1t5ndvb 0 iir27il 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 md- why5 cy*wb.agnitude of the electric field at a distany.-d*whb5w cy ce of 1.0 m from the nucleus?

  What are the magnitude and s9uoi p0dyu/p(ee fg0:, qq e5direction of the electric field at a distance of 1.50 m efoqu0 p:5u es,0yeq (ip9/dg from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small unpn5n*g 1c iryi,9; ntest charge. What is the magnitude of the electric field at the location of the test ch ng un5c*,rynn;19pii arge?

  A 5.0-C charge is 10 mzf-; ka p9vcgkqjzdo 4t(1 d15 from a small test charge. What is the direction of the elv-oqtk;cj94 pd(d1 1gz 5fk azectric field?

  A 5.0-C charge is 10 m from a small test charge. What is5.9/ rgp aa6xhoghxf: the magnitude of the force experx:o g/x9 rha5g6pha. fienced 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 aq+w 0/p- wu gwnfhl:4mq:71y 3cxqev rre separated by a distance of 4.0 m. What is he0lvuw7 ry -wmqq+x fgpn/ 3w4: c:q1the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm markh i6nt+u.ijy 41hvvw0 of a meter stick and a -4.0 mC charge is placed+j0vntuvy. ih 1i64 hw 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;ltbx:ym5 ehzqwp8+. 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 .+zx:e yt 5m;bhl pwq8is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. i1pz 3rni/uhu v0*uhr-p ))e43lbaby What is the magnitude of the electric fiahev*u 1up y4nb3-0r3z)i bul/h)ri peld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side b k.1:- llycnrbgc;q3 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electri- lrkcc3gbqyl n.:b ;1c field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at thedio)lx-m7atc7 i/ r:mqkq,o ; 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 (o/q:),dat7-oix7 mrk; i clqm0, 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 1kb. pba);jay8p7am3qpu j k9mC when it is placed in a uniform electric field. What is the magnitude of this electr) ak y qkpbamp1ujj389ab 7;p.ic field?

  A particle with a charge kcg ;g/2ibnz +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 ;dm9)gmxf /vl gq:r8mN/C pointing downward. What charge must be place vgx:m8mglrq/9f) ; mdd on the ball for it to be suspended?

  A foam ball of mass 0.150 g wkg db vd3p/r n-m-q9)carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude a/m dqrvpn3g9-b) kwd- nd direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu j03iwoxpky*6de of the electric field 5.0 cm f3 6xoy0j*kp iwrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electri; i0w(dv 7f c5blzql8zc field 6.0 cm from t(50zq l ;w78cfiz dlvbhe center of the sphere?