State the law of conrw-vg9w)ru.k 1jr xp:servation of electric charge.

  Is it possible for two negative charges to attract each othe-zrjqddhn9; - r?

  Is it possible for a positive and a negative charge to att( ytob 6im0xw sfsb1 4y,i(c1zract each other?

  A glass rod is rubbed with a piou9v0(ok.bxmoy t m;;ece of silk. During the process the glass rod acquires a positiv.0 oxk9y; oo ;mbvt(mue charge and the silk

  A proton carries a

  The model of the atom sho k3lgvsn:vm +cv r0(w721f hazws a

  A neutral atom alway q4bzs2/vq(sftg e2+q s has

  An atom has more electrons than prm ((02 xr3exbiwh whp: 7jh2 zyoh;ww5otons. The atom is

  Materials in which the electrons are bound ve3bjmbuatr 6dik/b 5k-6l+gw 6xlm :w/ry tightly to the nuclei are referred t tlwbkjmakx +b- u66/35 mgw dil/:rb6o as

  Materials in which the electrons are bound v;+ 7eab - 6.uwlqy-wm1fsd jfrery loosely to the nuclei and can move about free+6f r j.yuweda7lmbs-q-1wf ;ly within the material are referred to as

  A negatively charged rodp*d qmu7 .(bcvoxlzo7mcz- 62 is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod w(2qlc- o6z dcu7mz 7vm*po. xbill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Th( ,gva2e6akeek;wy )ula3 f ),/ jpqojey are placed near each other on an insulated table. Sphere B is briefly touched with a wire thaeo6j a)aa3,(peg,/wk efkyul 2;vj)qt is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscwvw3 i8v1h4zy 3b5 vbpope positively?

  An originally neutral electroscope is briefly touched with a positively chargeq8hz:x y;u7dfzl +/opd glass rod. The electroschu f/ :lpq d+z;zoxy78ope

  An originally neutral electrosco a5 .l;xwtiaz2-4wvbope is grounded briefly while a positively charged glass rod is held near it. After the t-5.ww4ab oa iv;l 2zxglass rod is removed, the electroscope

  A positive object touches a neutral electroscope, andu f/e-rw:s*+lv 5m lnma4-nr m the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. :u-rl wsm me+ 4-nlf/vmn5*ra What happens to the leaves?

  A large negatively charged object is placed on dcn:n/r7zmt :k 2rfv0v a)aa5an insulated table. 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 f /n7rfr zaktc)av0::a2m5dnvirst 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 3.d-vjkj/u 7ia: i mflthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance rwt(s8; f toc5zn:q.1 dnc:fbd. The first charge is larger in magnitude thnfz1 qco (wc.::bf8d5rtts n ;an the second charge.

  Sphere A carries a net charge an .7cwaow2t1v id sphere B is neutral. They are placed near each other on an insulated table. Which s7.w wac2 1viottatement best describes the electrostatic force between them?

  Two charged objects attract each other yh 4(o0ww ei(xwith a certain force. If the charges on both objects are doubled with no change in separation, thwxyi(w4eo0( he force between them

  Two charges are separated by a dist,qc- )p1yyaqpno /8ct ance d and exert mutual attractive forces of F on each other. If the charges are separayy ,ta8q1p nocp)c-q /ted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wha,qiazra 3k; n+t happens to the force 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? The force is now equal to;3k,aa qz+i rn

  An electron and a proton are separated by a distance of 1.0 m. What happens to 7dhu6 /pked 3+ig) qkwthe magnitude of the force on the proton 6)/k kw7phdq3uiged + if a second electron is placed next to the first electron?

  An electron and a proton are sepag1ik5b7h hnfp qt.ql6 /c5teh,5gpd(rated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a secth,c.k5d 5 e pfhig qp/7nqgbh61t( 5lond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. W y* lnsdq5wohwdm3+pqt-l-23 hat happens to the size of the force on the proton if the electron is moved 0.50 m closer to the pr+ odnlw wlq5yspthd-3m-3* 2qoton?

  A point charge of +Q is placebh09 /j(dw v6jp+oiw fd at the 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 (9jdb wo0f/6+ ijwp vhpositive 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 centropa-z : 8uee7myid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatiauz-m:eye78 pc 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 vertices?

  Which of the followin5hmc7l 8l l3p*j)nhy qg is not a vector?

  At twice the distance from a point charge, the strength of the electrw dn1v0,kq aj.ic field

  Is it possible to have a zero electric field value bet qeyq, 3w;zf(d2t i8bgween a negative and positive charge al;qez fd23t8wi,q (by gong the line joining the two charges?

  Is it possible to have a zero electric fiszrxyu2*3i :mme0 v 08w(cxraeld value between two positive charges along the line joining the two chargevrx cau8e3 s (y:2*m0zix rmw0s?

  Electric field lines near psitive point ch s vz(t3v il5u-qlo+9carges

  The electric field s awd zt7a2+u.nhown

  Can electric field lines in2j6 ify .u.ri bsw+bw/tersect in free space?

  A solid block of metal in electrostatic equilibhwvm0r(u d* t1rium is placed in a uniform electric field. Give a statement concerning the electric field inw*v0m(1ut dh r the block's interior.

  If a solid metal sphere and a bo i0wk (cc/kh0io6;e jq3hftt3)9 zf hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surf(3i0 iho k) j;/k t czfq9he3bc0otwf6ace is

  A cubic block of aluminum restsdfwyq z* mpawq; kn5q--4kd(skb +1z* on a wooden table in a region where a uniform electric field is directed straight upward. What can be sai*q41aqznq*d5kd mfpkb(-w-;y s +kzw d concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electricdyg(vu-+zga 5a6yajz h9s i.4 charge

  A positive point charge is enclosed in a hollow metallic sphere that is ground2p-y6gyn +o5zb3 rl dned. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere lb5n6 gd-2y+3rn y zpohas

State three properties of conductors in stih ivlg.o6 y9q-jvn).atic equilibrium.

State Gauss's law.

  The charge carried bklepzp 3 h,s+86vkkhtdaw667 y 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 has2p gpi0af0g6 u a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic ipaf6pg 2u0 g0have?

  What is the charge on 1 kg of proj l+d7w.cn(hb tons?

  An atomic nucleus has)c/6axe zh8wvlv;.p p a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatv90hd )ab6)9zjt koi xed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitudo6)bjhk i9 v90a) ztxde of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and .fz)rz h( fd9kthe force between them is 1.0 N. rhd( k.9zffz) What is the magnitude of the second charge?

  Two 1.0-C charges hav c4zo v ,s6nyf qmyuo24f6;m+ve a force between them of 1.0 N. How far apart are they?

  The force between a zdc1no1 /um/- fn-y4tsk thq8 $30 \; mC$ 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. If thu9j(:xzl.7 cku*le tc xtbq*;ey are moved to a new separation of teluxq *ub lkctc; :(9.jz x*78.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are ob wbd* ok9/p09;tfvmplaced on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third imo;d9v09bf*b /pkwt o s 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 thz/ck+-a kgf1u/ he4ase x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right +kcu as-1hf 4k/eza/g 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 are located at the followioa,:tzf r.th cu3 (ug3ng 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 3.00-mC c3 ,uau:rthgc .f to3z(harge?

  A point charge of +Q is placed at the center of a s:hsjf jpj1o+95e+ y lqquare, 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 :hse5 +y9jjo j+qfp l1-Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, * ec- )vxj:g 09zsekyy0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on e 9cv 0)-yyex*jkzs g:the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1vbg63 :l w1e n: vmnd1avpbk; 222gokm0 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f g21kp61nvblbow::2 ma;v n 3mk2v egdorce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ/ 3w,5lyq 6o q1s6dscoaj-ue. lfcf. milateral tril 3,qj 1slfwcms/e u-oy.d5.ofa66qc angle which measures 30 cm 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, : ks /sx0zwpl(which 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 swl s:zk(/sx 0puch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin a a(6e zr d r7cckq;zkk;1mtn6+nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed+(q; 1rkmz6cakdzt76e kc; nr so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pd*j p49n3 ,c9ct 8 izsqdf.fpilaced at x = 2a. Where can a third posi j9tsd3 4,p .cn89pdqf iicfz*tive charge +q be placed so that the force on it is zero?

  A copper penny has a b(+en vplhrtq44o o o5-mhu;( mass 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 fo )rq7+s-dbznuub7e 9arce of gravity by the attraction of a fixed proton some distance above it. How far above bz7nr+a 9ubq)eu- s7dthe electron is the proton?

  Two 0.20-g metal spheres ai(yon)zccda d1 ,mq5 1re hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the ydi1dzon1a 5c,q)(m celectrostatic 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.c:flpgux */mbw872 68 pfraov What is the magnitude of the electric field at a distance of 1.0 m from the nucxvb*f87rg:fo lp ca8/p w6m2uleus?

  What are the magnitud3f y p;r wz3bcr . (lpohym54.zqs)k.ce and direction of the electric field at a distance of 1.50 m from a 50.0- hwy qskoc3) m. zc45bry.zrp.lf 3p;(nC charge?

  A 5.0-C charge is 10 m from a smal 3k,q3cos/ex op mg+eo,0 ;xyfl test charge. What is the magnitude of the electric,km sofq; c,ex+3/ o3x0 poyeg field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whawd;qth g-2 x i)m(d,sst is the direction of the eleswi(ms)xq2 -;, hgd tdctric field?

  A 5.0-C charge is 10 m from a smalb wm,x a+)*byicv)q9gl test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge?*)g v,axyic )9mbw+b q

  Two point charges each hav; z*r* e tujj6xwj-zz5e a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betw6w5jt jxrz*z;*e-juz een the two charges?

  A 5.0-mC charge is placed at the rkcixqxr.iuch(q hs ;26x+( .hk x6y/ 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm markx x6 .c6hh 2h(kuxs.i ;(qrq/yixr+kc. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of 5j7oa izz4s-q a meter stick and a -4.0 mC charge is pqzioja-s 5z47laced 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 and -7.0 mC are placed e*56 vuv;*.3z i drv os-empwsat x = 0 and x = 0.20 m. What is the magnitude of the electric field at the p;6*p* w.ess ri o35z- uvvvmdeoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0. iil(mf +h h1n/(oby7b50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sl hob7 hn(fi(by/+ 1miquare.

  Consider a square which is 1.0 m on a side. Charge ojuwskb3m nd.e*)w +0s are placed at the corners of the square as follows: +4.0 mC at (0, 0wjuk.+ o) *e0s3bnd mw); +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 placed 11fl;m6a i2c40bq 6psbkd za, 1)sk /fzgyebwin a uniform electric 6fb laz12s;1)ckp b/aq 4e 0szik61w bdyg ,mffield. What is the magnitude of this electric field?

  A particle with a charge n/go9 ac/oh68fsb.z *so1 mfjt0- atvof 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 60007p g l7.g ylnccu7v0s a/+nddt*h)r7i N/C pointing downwsdrt*70.gu7nid c+v7al7 g/c )hlpynard. 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. The ball is plac3tbo ;mpok kqi9k; o,)+h;yweed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of9yo ie ;bkwotk3;m), qp;hk+o the electric field?

  A metal sphere of radius 10 cm ca c9ein6d; j*derries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 dj d;6*ciee9n cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is aqh8hy ) 3u(ucpx.a; kthe electric field 6.0 cm from the center of x qph a8 )uy(hu3.;akcthe sphere?