State the law of conservatiz-y:hb2ov u h2 nfu9o,on of electric charge.

  Is it possible for two negative charges to attract each 4wb,(v6)8 uhuym zkv9qrnk- 0hho1b vgl0 zb.other?

  Is it possible for a posi(ovzrza )6 bl-tive and a negative charge to attract each other?

  A glass rod is rubbed with ao,h pm/v gmdq 655o6fs piece of silk. During the process the glass rod acquires a positive charge and the dq5hsgvmo 6,fm 5/ op6silk

  A proton carries a

  The model of the atom show6t:f lh-hoxgv( lep;67 tkl3bs a

  A neutral atom always hw 8p9h:qadljthy.(qm9 li l)5as

  An atom has more electrons than prot3/e-1oafm r mgons. The atom is

  Materials in which the electrons gzde)*ca:+wg are bound very tightly to the nuclei are referred gza*cg)d w +:eto as

  Materials in which the elec3sy0 ; pi)tuhrtrons are bound very loosely to the nuclei and can move about freely within the material are referred tortuy);hp 0 3si as

  A negatively charged rod is brought near o:a5,3 ) t s .kkzwdena+g:ppdone end of an uncharged metal bar. The endakdtnpw5p)sk:eg z+d , 3a o:. of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral d;c(1hyj.p,z 2 ygzrb. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. ,1y ;b dj(2pchz.gyrzWhich statement is correct?

  How can a negatively charged rod charge an elec fq6p,zynrn2jrc0 cpq+;( ti00ef v,ytroscope positively?

  An originally neutral electroscope is briejjh9gh5s el97v gn) h2mrda y:wxuya04r()k*fly touched with a positively charged glass rod. The *0lnh(hr52 s:u9)a g y) h7rkey dm49j awxvjgelectroscope

  An originally neutral electroscope is grounded briefly while a positively chargew (o1-khf:d kvtu *).w:r ynpy7ruhp/d glasok7:nwu rk tyvy)hp-h(*r:u/ p.1d fws rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thxz9d rq, qk6)me leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lek r xzq9,dm)6qaves?

  A large negatively charged object is planz*ge 07*f d8p1rhiobced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops ben7 h1dfi*e0* rpog z8bfore 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;dk(/ahw hcpbx bmw+vi,5 (5k constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distap2thfzp( c r-:nce d. The first charge is larger in magnitude than the sp2rzf t:pch (-econd charge.

  Sphere A carries a net charge and sphere B is neutral. They awwip)c st:g. u-jv(.zre placed near each other on an insulated table. Which statement best vw(c u)gp z t.i-:wjs.describes the electrostatic force between them?

  Two charged objects attract each otlg, ke7j36*g puv8hu mher with a certain force. If the charges on both objects are doubled with no change in separation, tk3,lve *u jhg6p gu8m7he force between them

  Two charges are separatedcsa4sia :i1::cqt9 ai by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance ofci:91 :a4qatcs:iais d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thjcc8af2r3ic +/8ery owo 7+zmkm,e1 me force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is r,zcfomeim c/r y+38jk +7e18crwmoa2educed to one-fourth its original value? The force is now equal to

  An electron and a proton are sepa/cqf e,q; p0mgsnz -:irated by a distance of 1.0 m. What happens to the magnitude ofn;gpzi,q/-cse :fq0m the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wha8dzq+l wwao0ebf* : j(t happens to the magnitude of the force on the first electron if a second e8*(aez +w0jqod bwl :flectron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whalwi 3/5)c;wjvqyys/ lt happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protonlq// wsyc ;jy3il)w 5v?

  A point charge of +Q is placed at the center of a square. When a second poiz(bh oijlney-38+2 eo 6j evc+l8yx k3nt charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N actybe2li3 ncoej8 63 8+(e+k-hoxvj ylzs 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 equilateralcz+psm,i0mq39)b0z8vp prza r0 j)r 46ppdmd 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 thm)z0ic4mpqv djbr30 m d8rzp) p,zsr+06 p9p aat 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 vect( iq d,ul7nk lq,ajx9d7p6p 2jor?

  At twice the distance from a point charge, tneruqets:+j+(+ ,o 9x) eu tkjhe strength of the electric field

  Is it possible to have a zerv q:r x b.r3xz)v smod5hhf6/5o electric field value between a negative and positive charge alon:bd)5rz 3x/vqh.rxv5h6s fm og the line joining the two charges?

  Is it possible to have a zero electric field value between two positit0ob/ m4v78aid.sdnk i 6n :7*gilllcve charges along the line joining thebic on607*va4:nml7 8k/t idgsdi. ll two charges?

  Electric field lines near psitive point og0a*a/a 2raw qcbb7 9charges

  The electric field s(m:hu2xra h.m hown

  Can electric field lines intersecttf69t b(m7cmyxx/c)9 sjx5*3 ncutat in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ep;fqmy5 uregw (8e8;bcm; xf 4lectric field. Give a statement concerning the electric field in the block's interc58p84qee m ux m(f wbfy;rg;;ior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi18f ,reppvbey/ 115jn tjp ko8ven the same cp1vjk,yneoj/p bfe tp8 151 8rharge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests ontw*hea9o +ya3 k-( vvc a wooden table in a region where a uniform electric field is directed straiyw3teo* (c va-hk+v9aght upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriud9mh(v v,al:d5ml3wta 1 ghi+m near an electric charge

  A positive point charge ) y pe7qecv )g0zev-jg.kl 4:jwo:lm1 is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the ho14kpve) vmlyjc jeel).70owzg -: : gqllow sphere has

State three properties of conductors in static equilibfwc e:7fdc:zfwq9 12b ue-l9 wrium.

State Gauss's law.

  The charge carried by o/ ojzj37d gth:- *s ppib,/qkk8qhx*pne 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 ofpmo s;e.8 -t 0xciv1xl +2.00 mC. How many more protons than electrove.ox 0 is;8p- 1txlcmns does this piece of plastic have?

  What is the charge on 1 6 90qg(8hp3 jbru ledlkg of protons?

  An atomic nucleus has*aikhewswc /s/ or0 e/ pl8-/b a 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 charg4nqgwurxg vk3 m7 d0)iz i;;6r,ym2r ue values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric 6yu,r2n umxg rgi 3q) ;drmz0 k;w47viforce between them?

  A 1.0-C charge is 15 m from a second charge, and the forrsp;pt x*snxn( .9 b5hce between them is 1.0 N. What is the mr9ps*;(n . bxp xst5nhagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apar6yhkllz sdy4dv/3,s 1 qvo1-rt are they?

  The force between a x0es xg2(:ogq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a-+ * ahln,tardpart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forc, a*at-l d+hrne between them?

  Three identical point6vr2-b-nq) tfw8p).lpo zuhd charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x =n))d .rf- 28-lboh tpzwup6v q 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-ax6rvy j zh-),ogis. A charge of +2.0 mC is placed at tv,y)z-go6hr j he 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 charge at the origin?

  Three point charges *nd3*ismn+z zbz 9+lyare located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a93*zi dm zzs nlnb*++yt 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 k*ik9ka+6:sw lpmfyll-; ea 5 a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force e;al l5-ipk6ywl *mf9ks+ :akof 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 =kvl 7:3 p-y-qdddu;fs 5.0 nC is at (0, 0). 3 fsdly-;q:7kd vu p-d What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2sy1rp 8k hd2a+ = -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 tkyrhad+p2 s1 8he 5.0 nC charge?

  Three identical charges of o hwgyl(04wo+pd p95y 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts owhlp g+p(yyo09d 54won any one of the charges?

  Consider point charges of +Q and +4Q, which are separatwwx rei as+ukt9):z o45 .3awked by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electro): zkeuiw4+taos9 wkr5a3x .wstatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9echl( 0zh n0lk)5dm5e.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero)0d( c eehz55nm lkl0h?

  Charge +2q is placed at the origin and charge -q is placed at0 7- mf67xedjdge; dsl x = 2a. Where can a thie7jd xf gld7d e60s-;mrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totan 2+(zxs8f/xm, mvqsk b3 5tcul 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 wnv14cx(wke75all p1 the force of gravity by the attraction of a fixed proton some distance ab( nw1vepl x7 5alwkc14ove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from -m(8p*okqnod4k nc;b1kb* r ba common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrosr( m*-knon 4*p 8k;qdb bo1kbctatic 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. Whac 4rl7fm4e4+ r:ds+ul e qmu8jt is the magnitude of the electric field at a distance of 1.0 m frofu dmcs8+:+744 m eerjrlul4qm the nucleus?

  What are the magnitude and direction of the electric field at a distanm:ua83v hdbf ,e7jre ;ce of 1.50 m fromjh3vb; de8:ae ,rm f7u a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What i7 r3:fro.jh ;q- .o3oxb hubtgs the magnitude of the electric field at the location of o hr o7.33g.bf ht:;oju xbrq-the test charge?

  A 5.0-C charge is 10 m from a small tqh q-o-4wf,m0m7tbt 9b ik jv+est charge. What is the direction of the electric fielhq tkbbf7q - t+-9wim4v j,mo0d?

  A 5.0-C charge is 10 m from a small test charge. What is the m7fis,v;q ;;sunr*s izagnitude of the force experienced by a 1.0 nC charge pl s7uv, i;;;iz* nsrsqfaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and aryh14 2kgeqvl0ed ppan; e l,)4e separated by a distance of 4.0 m. What is the electric field at a point mie,ldkp40 p1 ;eqv gyenlh)a2 4dway between the two charges?

  A 5.0-mC charge is place.plaeqq ya- - :*mob:0 c51jtuxgn :oed at the 0 cm mark of a meter stick and a -4.0 mC charge is axeo1cquel:o gn-*0: tjqa-b5my:p . placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plaz (0twcbxn 4w)osa3ntk 2 j;4iced at the 0 cm mark of a meter stick and a -4.0 mC charge is plan);tjta2wo 34xk(0 4sn zcwi bced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC anuc-qxx1.s kn +d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnixc1- +.kq nsxutude of the electric 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. T:of5pie u l2e9he last corner is uop5 e2:lie9foccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which isev+ on2/*4 hv6 n xcqp,c/crxh 1.0 m 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 at rohc 4nvx/ v,neqxphc c /2+*6(0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a char1pexc.:wy; a s6fo3f(l9-d; llbd zcr ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of 3(ff l ;p9az:wdb6-y.xcsed c;r1 lo lthis electric field?

  A particle with a charge of 4.0 mC has a mass of 14ead;j00, + gtans(mj6 tfhvu7ybv d$5.0 \times 10^{-3} \; kg$. 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 op q,y8f wcqfwlf*ce37 b. tk/+f 6000 N/C pointing dow8qbkwpyfq e+*c7. w3lf,/ ft cnward. What charge 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 nC.4 m9 pz s:b8b snjehz/9dsg7q*bzl)4x The ball is placed inside a uniform elg44b)/ zjesdshq :b*n9xb7lm 9z p8 zsectric 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 charge of4 /mi3dyjfg w(9 gdis3 +2.0 mC. What is the magnitude of the 4g3fiigd s3y /9wjd(melectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is k*ce 29e2ywco the electric field 6.0 cm from the center of the spherew2oe*ey kc2c9?