State the law of con9/0im kec5xpp um 54kfservation of electric charge.

  Is it possible for two negative charges te9uao ks /2fg*o attract each other?

  Is it possible for a positive and a l9e4 0tl2at+wuk*:ti dk9 i x3d4eevwnegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass roh;p 6vlp6 .fgxd acquires a positive charge and the si6lhfg.vx; p 6plk

  A proton carries a

  The model of the atom shows aa vg3 8+nplb,(t 2rvhv

  A neutral atom alwaysm(6ksqhsjv w nd2w2 iy.m v+(/ has

  An atom has more electrons than protoy, +8oxc- dlm5mnvk9a5)drvins. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are (0syy9rja n lik39k-wreferred to a-j90y 9ys3rka(wl ik ns

  Materials in which the electrons are bound very loosy z 2.u5ri*m4emksx v.ely to the nuclei and can move a.vm*sem2z5 k4i yuxr.bout freely within the material are referred to as

  A negatively charged rod is b* qb +bblsz: 6tgvy8cb7i;ok4rought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ch:bb bv8q 4bkzlys6ic+ o7* gt;arged

  Sphere A carries a net positive charge, and sphere B is neutral. qt* l p-0hxpu8zrv 7gv7z;;kz They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. vl80r; z;hz7q-gp*x pk zutv7 Which statement is correct?

  How can a negatively charged rod charge an electr9(kmm.vc ; 3+yrtyqsql qa vd 9lc9m64oscope positively?

  An originally neutral electroscope isy ,g*f;rh; waf-wv-d,ay sr r.* )qimo briefly touched with a positively charged glass rod. The adri.ao)hf yy m vq;rfg,ws,*-*-; wrelectroscope

  An originally neutral electroscope iv c/8 fxzwk+q6.ixmf2s grounded briefly while a positively charged glass rod is hec f/ mfxv8q62iw.x +kzld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutra9 +su w4 8bum7)oyb5h t p4pnisay5z;il electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touco 4 bpwzi75nsi4 b)umy+y 8tpa5;9uhsh it. What happens to the leaves?

  A large negatively charged ob8rwk yr:o nf4771lwf dject is placed on an 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 first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative objecld1w8 y7kr w7 4nfr:oft. What is the final charge on each ball?

  Charge is

  What are the units of the *x sc 19ngt/qg 8+iykwCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dcn ,qj 0ky54 h0qb*dh(yqvu3w. The first charge is larger in magnitude than the sq3yqw5yhb0, 4q(cdhjk* nu0v econd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near a(6h gs*/zwz)xszz, jvcv0. veach other on an insulated table. Which statement best describes thec.* )gzas /x,( w06jvszzhzv v electrostatic force between them?

  Two charged objects attract e 7ha )yx::eddvach other with a certain force. If the charges on both objects are doubled with no change in separation, the force between t7 d:ex: v)yhdahem

  Two charges are separated by a distance a.j 7onf+ixi+4phwg*d and exert mutual attractive forces of F on each other. If the charges are separated by a distah nwipg.a7jo*f x+ i+4nce of d/3, what are the new mutual forces?

  Two charged objects attract each other,z79kwfmvd(h with a force F. What 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? Thed 7fzw, 9(mvhk force is now equal to

  An electron and a proton are sepl 3; h pfvrlxp b6qc-0kg.9zd(arated 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 elec 0;qh3vcg6 l 9xp.z dpkfrbl-(tron?

  An electron and a proton are separated by a distance of 1.0 m. What haplyy48*5ghs-kwko93 nqa . (h(rduqi spens to the magnitude of the force on the first electron if a secoad*5q r( 4.ns-o3ugyi wlkh 8k9(qshynd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What+ g t,so,zvla.8wjsvvh 9/fl/ happens to the size of the force on the pz l8/9v o/vjwv+ f,lsasg,t.hroton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whevx/g j t m1ug6(o.y1gmn a second point charge of -Q is placed at one of the square'sj g.t1(x mo1yg6 mug/v 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 charge at the center of the square?

  A point charge of +Q is placed iv3boo b j8b85at the centroid of an equilateral triangle. When a second charge of +Q is bi8bv3ojo8b 5placed 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 vertices?

  Which of the following is note6msls12pvcvd9lx8v / yw v8k) z2jo- a vector?

  At twice the distance fro8 g:3ntzkv vkir*b *a)m r7s7zm a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatsi9p8:. sf7 zgqiys1p;;m 5z nndeuzj.x5) vgive and positive charge along the line joining the two charges?g j5s:qpp1) i n8i.syz ;n5mgx9d efz;suz.v7

  Is it possible to have a zero electric fiof 0za (y4 dwc:ogzx12eld value between two positive charges along the line joining the twz(4w2 1f0: czdox gayoo charges?

  Electric field lines ni6s3ij .v1tpwj- 1fdl4p nb/aear psitive point charges

  The electric field shon kg, 4uoqq33dwn

  Can electric field lines intersh th diwd *ujhw3*2z26ect in free space?

  A solid block of metl + lcnk 77)zp5fo(rmial in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the bloc 5 7+nli)(fkloc mzp7rk's interior.

  If a solid metal sphere a av4,t-5 ubact/t/meand a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the t,maae5tub -v c/at4 /surface is

  A cubic block of aluminum rests on a 4h j9r0 m-qx fvjn05dforru 94wooden table in a region where a uniform electric field is directed straight upward.5no r9x 9d44r f0ruv-0qfjmjh What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilivebaagj,) 4 8cbrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph2hrvyow6+ e4cere that is grounded+rohc2 vew 6y4. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium j qrlry 29pgf+p-ip;+.

State Gauss's law.

  The charge carried by one el3nsmxz)p 2e :m: q;xtgectron 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.kuases..40xu7b4whmhncjdhf0 , n)2 How many more protons than electrons doe)bh,nm wd2eufs n.uhkxs0ahj74 4c.0s this piece of plastic have?

  What is the charge on 1 kg 4sz9n8kc* ,szvxqlxq+n8b4qc 6g :cl of protons?

  An atomic nucleus has a qw w(sq,:-idqcharge 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 charge values of 2.cz) ej1py0 lc.0 and -4.0 mC, respectively. What is the magnitude of the electric force bete0)jcp.c1 l yzween them?

  A 1.0-C charge is 15 m from a second charge, and the force s8, r*x:-kaywxpq p lp7w9 xt+between them is 1.0 N. What is the magnitude ofwp-lpsxtrk:, xq8 a 7ywp9 x+* the second charge?

  Two 1.0-C charges havec .42 ezxj3rq1j r-li+pp.fuy a force between them of 1.0 N. How far apart are they?

  The force between a -7z7m .z2q(fg knu)bd vko(dg$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm8rzho 8x ;pru -/s b61lyriy8w apart, experience a 1.0-N force. If they arw 6 ibro/uyr8r-;z1hly s88xpe moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges o4j05z zy q;feof 2.0 mC are placed on the x-axis. The first charge i o5q4;fe0zy zjs 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 charge at the origin?

  Three point charges are placed onwds(joqx+ e92 c+fnxr5uo.8j 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 tf(d 8swce 2xujxo5++9qjr n .ohe charge at the origin?

  Three point charges are mr m.uk e cg5bvs 2e7/dhiprn:2m c.wl.,9xq3 located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mh.rc3cdseg e. n,lb927.5kv mqrwm:2x/p i mu C 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 au7zqd+q s-xiajc 4 8(lt 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 is placed at the lower-left corc 7d +-4zal8 uxjqsiq(ner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.1x w8kfhj 5: r5;q(quwk0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of w (w55xqk ;qu:kjrf 8hthe 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 yvyom eijg4+ csv ..26m); Q3 = 5.0 nC is at (0, 0). iecv+yjs.2y6.vg 4 mo What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticesybpffe)tjs c*cb y.l5vn+y- 6--: gai of an equilateral triangle which measures 30 cm on a side. Wb f n iyl-c f -s.-v56ycepya)b:t+g*jhat is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichjii iuf0m5uyr )d7zt() ( l/be are separated by 3.0 m. At what point, on a line between the two charges,irz )fud(etiu5(m7blj/ 0i )y would it 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 ori)b)9idojjam bs/n66u.sz iu4o-n *do gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so mo*jd.i) b n 4/i- s6s 9objuuna)od6zthe net force on it is zero?

  Charge +2q is placed at the origin aoodozi 4qc;2y5oq (y5 ,5b )i lpaz2tqtz1u6xnd charge -q is placed at x = 2a. Where can ap6otoiq 242,51)oiayzd 5c5bz;q ( zxtq uoly third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3q6cvz 5 r)f)hmu6arl8.0 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 gravity by th4op uzo b)9 sjapg-7(,ta6p rre attraction of a fixed proton some distance above it. How far aboo9bp,g4os j rpt6aa)-zupr (7 ve the electron is the proton?

  Two 0.20-g metal spheres are hung from a commonh6 cb5 tanf6k0 point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the th5f60can6h tk breads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is th7 oqxpsxih o0vpu201h( xow7b;j5op+e magnitude of the electric field at a distance of 1.0 m fuq opvhpoxi 5 +x (oh072pb10s;xwjo7rom the nucleus?

  What are the magnitude and direction of the electric fiexdp5ufgw4 * *; nu0cjsld at a distance of 1.50 sx5*du*ucp ;f4 nw0gjm from a 50.0-nC charge?

  A 5.0-C charge is 10 m frcsg4l8rc scr4;;( vs jehs diwf559j*om a small test charge. What is the magnitude of the electric field at the location of the (f8r5ssslg*hedc s j5 ;cwvir9 j4c4; test charge?

  A 5.0-C charge is 10 m froon**//a dwa5utn )hqhm a small test charge. What is the direction of the eleu/*a)honwh5d /n t *qactric field?

  A 5.0-C charge is 10 m from a small+ -lh1bwi ss84 :1vqzlvkj 8l jx*ioi) test charge. What is the magnitude of the force experienced by a)1j bi1v -*q l88ols4ixvz: sjwi kl+h 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distse0(t rjm8 d r0 i-r-l-yn,rdnance of 4.0 m. What is the electric field at a point midway between the tw0rne-md rr,y08jis lr- (-dtno charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC oxp fn6q vt9 +9th,vbui 5h(4vcharge is plaihx 4,5nptovqh (ftvv6ub9 +9ced 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 cm mark of a.mqko,6xp*jop* 2ee blxr3n . meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a lin x.opj*ob3,*p xle6eqm .k2 rne joining the two charges is the electric field zero?

  Two point charges of +q.t2s9zoo/7pu-u j 3ahfatc :3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thut pj o.az/-uh t32 aq:s7c9ofe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidex:5aynt1nm- -z/ sy(p xlsh;x 0.50 m. The last corner is occupied by a -3.0 mC charge. Find th( tn yp--ny1x as5lx;:hz/xm se electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornersiynx 25:x jt/wj/aei7 nbuk+ * of the squaret2wi5/ju/+xk7* xi nnay: jbe as follows: +4.0 mC at (0, 0); +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 o ;u lj)gr51k8vcsem zzdg0f19n a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fieldzdfs1 c ejg80g)m59zvl kur1;?

  A particle with a charge of 4.0 mC hasor()*qhctoi( lv.6hv 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 massx8)kwt 3hiw1d+wr7 sf 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be wwkt78xi+d )f sw31rh suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed6t6chtvk*yl6rq7r a ; inside a uniform electric field, and is suspended against the force of gravity. What are the magniht7r6k yv*;tl6rcq a6tude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu)2o bbqed6 ws4de of the electric field 5.0 cm from tsb4)6d owe 2bqhe sphere's surface?

  A metal sphere of radkkljbk. u 5,,dcu bl5(oanq1 crw*-)eius 2.0 cm carries a charge of 3.0 mC. What is the electricqu jr,nkblou5-,c(e5l k c.d)ab k*w1 field 6.0 cm from the center of the sphere?