State the law of conser,fe,zzup5b0rwu 6+s rvation of electric charge.

  Is it possible for two negative charges to attract eac8e0pj8 4 mkdyx nec.;9z zbr3jh other?

  Is it possible for a positive and a negative charge to attract each o;myk )gm: puc(ly5gd8 ther?

  A glass rod is rubbed with a piece uigdw9qr 5o (j(55/ywg(7l l1r ivcpvof silk. During the process the glass rod acquires a u/wgyp i7iv 5q dlov5l((wrjg15 (r9 cpositive charge and the silk

  A proton carries a

  The model of the atom+y)axvh7v8 sf shows a

  A neutral atom alwaysr fnhs 8hddn 6w:(s(s6gy/ vy) has

  An atom has more electrons ny/ s *ch-g5uvthan protons. The atom is

  Materials in which the electrons are bound very tz j:+ svsoif5hl8/2btightly to the nuclei are referrz svl/ot+52hji:fbs 8ed to as

  Materials in which the electrons are bound very loosely to the nucleih;4 oi wad94jgecm) (s and can move about freele4dmj4(shgc ow ai;)9y within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. garuo8zc-* vt7e*p8s The end of the metal bar fartheeovt*s*7az8c 8 g-u prst from the charged rod will be charged

  Sphere A carries a net posf b7 f8i5mmx+vitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with i5x87+ mbvmff a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope po58rgmebb8 -dde9/ls4 mwlc(s sitively?

  An originally neutral electroscope is briefly touched with a positl8ab a:( ym,pe/hke8yively charged g(kbye,/ h a:e8 pymal8lass rod. The electroscope

  An originally neutral electroscope is grounded briefly wh ptp,k6 zi6xiei.1 f5gile a positively charged glass rod is held near it. After the glass6ip5iz g6t xpe .,kf1i rod is removed, the electroscope

  A positive object touches a neutral elepfdr+7+.0 ii jxjkby; b3q mz*ctroscope, and the leaves separate. Then a negative object is*yrpz.j;b m f7+qkdix3+i b j0 brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed 3-2yrlpx jy7fon 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 r7y2x3l- jpyf. 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 Co luvi8)5 5xfezr2e/feulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanx.g 2l jl+rew2ce d. The first charge is larger in magnitude than the second+ 2glwrxjl2.e charge.

  Sphere A carries a net charge and sphere B iss;az.u9gg *j.w + :mxvf* jrpa neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between them?p: ug.;* zj9rxfvm+asa*.j gw

  Two charged objects attract each other with a certain force. If the charges ys:)c;to i+fzon both objects are doubled wits o:+tc ;)yifzh no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti h:zya50g ali-ve forces of F on each other. If the charges are0lga5yh a-iz: separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whayl1(isa/ pov k2,2xcat happens to the force between them if one charge is2 kl so1vcy/piaa(x,2 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

  An electron and a proton are separated by a distance of 1.0 m. Whald)6 h*x e oxv/vd2yg- 2mvjb5t happens to the magnitude of the force on the proton if a second electron is placed next to the first lyvdh)jo v/e*6dx-b52gm 2vx electron?

  An electron and a proton are separated by a distance of 1fzkyfyqg6r;fs8d* i 6: xl7 +v.0 m. What happens to the magnitude of the force on the first electro;68f: y ykxf l*fgz6v+i7qsdr n if a second electron is placed next to the proton?

  An electron and a proton are separated by a du0j8jb)qm8 k ristance of 1.0 m. What happens to the size of the force on the proton if the electro jmubk 8qjr)08n is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second1dri w 2 xbpgdt b)04emz0k:8j 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 square's center. Now, identical charges of -Q are placed at thebp zg8dmt 0w: r4x)bej20d1ik 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 4f jqimpy 06z -n,o+yaplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at oneoqf-azy ,604jn pyi+ m 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 not a vector? tjaq)vs8b l bk18br*m ut ay8-oy(e1.

  At twice the distance from a point charo,u axjvw fnr(5+5 0 bt6lv-cmge, the strength of the electric field

  Is it possible to have a zero electric field value bete1h 1/ / ;yoameg:ggc;onk0nxnd h,5kween a negative and positive charge alom;ahn1oh,ckex/g :5; ny/ ge1gdok0nng the line joining the two charges?

  Is it possible to have a zero electric fielaejlv4) fa1u(r (8 fkid value between two positive charges along the line joinin(kfr)(4 eaj lfvua18i g the two charges?

  Electric field lines near psitive point c4xg;5 vr rj:ypharges

  The electric field show4t:oba *vy2,j)nyx (unk: tfpn

  Can electric field lines interse2 ieq;vxnlf+(ct in free space?

  A solid block of metal in electrostatic equ.umo/w azdr(dam -5 -silibrium is placed in a uniform electswm-dd.o a 5um a/(zr-ric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet :cilcu:pbt;6g+ez tq.3 y 0zuers are each given the same charge, the electric field (E) midway between the center and the surface 3;gq6z ty+ c::uilztpcu. e b0is

  A cubic block of aluminum rests on a wooden table in a region wki jarh-. ruz8c-j-v/.) 8nbbjpj1bp here a uniform electric field is directed straight upwaji8kcu- - -azprbb/j )bjj 1np r.8h.vrd. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equ+ +x h**jk i9zcx67y4mp zjmn:3 jmuhuilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph2 )3tormq/p;s7 hm fm9u5pne38;(llge ke mfeere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directlsgeemlf m9o7 rehp;q5t83(k;f)p u/mne2m 3 ly above the hollow sphere has

State three properties of conductors in staticsh191994phha/kjw )dzy m 9qufryq-k equilibrium.

State Gauss's law.

  The charge carried by one electron isq wwlqkj,o6:s5tzd* 4 $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of +2da7hsqd7 7s:i n, xa4;fw3q jy.00 mC. How many more protons than elech3 j:ddy4ai w s;qaxnq777 sf,trons does this piece of plastic have?

  What is the charge on 1 kg of protonsu n1ys5s:) hcn8hfgo:?

  An atomic nucleus has a chawuhhlmoj od0xr+j ;(:w3x/h6rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separk79d sxj 72wkrated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of 27 r9x djk7wskthe electric force between them?

  A 1.0-C charge is 15 m from a seco etwgy j/nfe.*uqvp:a ;+,tkdx. m h45nd charge, and the force between them is 1.0 N. What is the magnitt, gn*hw5aypve qx+/def:j.m tk .u ;4ude of the second charge?

  Two 1.0-C charges have a force between them of 1.;tpt :*2rx ut)ph4c) gdm6gohi*4joi0 N. How far apart are they?

  The force between a *,.r;jxk1n uhbjmif * $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inity rk2eoe .zf qqk, 79,be/uqd*ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separaeqq d kqz,b9y/uer, 7*.kf 2eotion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plavchw : j x(9a;65eadwdced 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 wj ev 9wd;da5 x:6(hacforce which acts on the charge at the origin?

  Three point charges are placed on the 02fpc);iqkjt *o tml- 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 q ;*komct-)pj2 flti 0mC 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 folg(n0h(xfa2r-2b0ua r+qmyhcvkqc dz8d7m)9 lowing 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 vdd(9ayf g r) 2nuk-r2zmcc0h87+x0(bma h qqof the force on the 3.00-mC charge?

  A point charge of +Q /taz7 /nqemoq5 pfj(- is placed 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 ao5//ena(pm7qj-f q ztcts 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 2 aw4 fy2io3:i g)fjbe= 5.0 nC is at (0, 0). What is the magnitude of the netygf24w 2io :3iea)fjb 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 )s.:yirtisi6:vf u w0 p6dde: nC is at (0, 0). What is the direction of ie6ds6:i)i . t:0pfdv:sruyw the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plas z4zrkv*3be0 ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any b3zs4 0k zrev*one of the charges?

  Consider point charges of +Q3 y 0 sc;e vk /aqv7vbu2;y5(8wo2r3yu vpqond and +4Q, which are separated by 3.0 m. At what point, on a line betwew(v q ;o3;qpsv b8y0arnve3uk2/ cu2ov5 dy y7en the two charges, 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 origin and a +9.0-C charge is at x = 4.0 m. Where on v*svwzga 0(v i7wo29 hthe x-axis can a third charge be placed so thv(9 ov hwi7 2avg0szw*e net force on it is zero?

  Charge +2q is placed at,gil q:kf6y vfo )+74nf/lc et the origin and charge -q is placed at x = 2a. Where can a third positive chaf+,nq itly7c/k4ffeovgl :)6rge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Avi:q :+6b.yoq.vp m:aokdpe* hajc *) 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 bf/yxt7ugx*3 p)y7s5u 3 fiibjy the attraction of a fixed proton some distance above it. How far above the electron is the tsff/7u5 yb )xigi*73jux3 pyproton?

  Two 0.20-g metal spheres are hung from a comqlnq)6)e -a azmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 6le)a qa-nz)q 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 3vwqmi-u7h fx4 zsl7 s/-(pq mof +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuciq/qu-ms m-374pfx shwv7 l(zleus?

  What are the magnitude and dir,,b gscrx8oajr0szb-5v w;x4ection of the electric field at a distance of 1.50 m from a 50.0-nC cha s s4r-xb; wj o0,,xra5bg8vzcrge?

  A 5.0-C charge is 10 m from a small test charge. What r vgn+9.mvwmkh j/28 vis the magnitude of the electric field at/hkv.+rm 8vv nwgm9 j2 the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargfq-,mym*w h0 9qqbxw 7h (*ghve. What is the direction of the electric fi(*0hqmy-v 9 wg,hbx*qh w7qmf eld?

  A 5.0-C charge is 10 m from )ox uzody. 0fjuo2;vw3 *ete4a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the 4eoe 0f2 t3) d*ozuoxu jwy.v;location of the test charge?

  Two point charges each have a value .d-ef1*a zy.i0 *ivf ny(rgj kof 3.0 C and are separated by a distance of 4.0 m. What is . (figy.krizjya 0*1e-n fvd*the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed a(m -id7-*y3 nnx yud1w0x7cv xj9qr wvt the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect71-(x y0djdw vx 3-*7n9nm v rwxuiqcyric field at the 30 cm mark?

  A 5.0-mC charge is placek ailty.9a0tz ,1ciril72op- d at the 0 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 char1 p- ,yki.oaz7ti0i2tallr c 9ges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x h4) u cdcm,c bgk7(hgipuiv;9v6n)f .gc m90d= 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweecv; (k.c,7 nggg 4budh u9ipcv0f))m9c6 dmhi n them?

  Three 3.0 mC charges are ab w1,;kft+gv 5p;eu dit the three corners of a square of side 0.50 m. The last corner is occupied by aek5w ip u1+bf;td; gv, -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges+d.l ,rq7 d2 nc l9nc2whos2zx are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at 2lzd.hl 2nxqcrs 2cn +d9ow7 ,(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 mypw o5i:p b 3d)zqys.j jb2,-kC when it is placed in a uniform electric field. What is the .k)ojspb,5jy :wbi-32yqz d pmagnitude of this electric field?

  A particle with a charge of 4m -/wop3y :lfbvi) vip h;r);x.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 N/fw5bn8mic2( vzpss,37l7my zC pointing downward. What charge must be placed on the ball for ityvwmzfs 7s,mp7lnb z3i5 8c(2 to be suspended?

  A foam ball of mass 0.150 g ka1 7lwbb:b4 hcarries 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 abk:174bbw hland direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitcd lx52 s/-ngmude of the electricxg2sml-d nc/5 field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2sa osmi9 (3v:i.0 cm carries a charge of 3.0 mC. What is the electric f(o a3smsi9:i vield 6.0 cm from the center of the sphere?