State the law of consfq sq02hpq+ npf d6ea qz8*1r*ervation of electric charge.

  Is it possible for two negative pwtn-h+k zl.43e ho*.- dqb0 (zy qliwcharges to attract each other?

  Is it possible for a positdvn 41 p:ih. q7cum;edive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During t b2oo+3v kj goei g7h0ffj 7a37)aewq.he process the glass rod acquires akjv3 7gah a77+02e q .fo oewbogif)j3 positive charge and the silk

  A proton carries a

  The model of the atom il6p)fa;e/x rb42zntshows a

  A neutral atom always hashp ; wbd+lofo obt b(p(z1ld8.u.4:b s

  An atom has more elec2x8 3g:ujgh3u msl3xn,s 3gtttrons than protons. The atom is

  Materials in which the electrons are bound ..rcxn;-c7abnk p z 9overy tightly to the nuclei are referred.n kxcn-c.z o9; bpra7 to as

  Materials in which the electrons are bound very low,x6sq 0b*nmm osely to the nuclei and can move about freely within th6*b0xqm,mws n e material are referred to as

  A negatively charged rod is brought near one end of and,e,b . cipikqj q(28p uncharged metal bar. The end of the metal bar farthest fr (i,i k8pcp2e.qbqj,dom the charged rod will be charged

  Sphere A carries a net positivnko/(o i4 ehx3e charge, and sphere B is neutral. They are placed n x3hn4( ikoo/eear each other on an insulated 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 positivzaw +yh,3wery( wt/g2ely?

  An originally neutral electroscope is briefly t,toy ksl/p4 d7ouched with a positively charged glass rod. The electroscopy/tk pl4s7o,d e

  An originally neutral electroscope is grounded briefly while a positively chaje ,k , 1gdibpgn 8rt3.xmf+nsb(z15g rged glass rod is held near it. After the glass rod is removed, the electroscbgj .g 1 zdxnkrmb,8+es(5pgt1, 3ifn ope

  A positive object touches a neut)k6 u e;i-czffral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?;fz 6kfu)e i-c

  A large negatively charged object 2h03 d6bvlo );qzyflm(rr z+5myzfh4is 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 thl0 hm2f 4l); ozrzyzbhfm6vd35+y(rqe negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb cong6bx 1 5fz rd54v:yfxvstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larrvg(bivu6i **j o-pj7 2bg00thf o f*xger in magnitude tu*oh(o 2t 76xgr0j fvbii*gj *v-fbp0han the second charge.

  Sphere A carries a net charge and sphere apw u(.y*lz pp4u0p*kB is neutral. They are placed near each other on an insulated table. Whp*p .alyw p 0(*ku4uzpich statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forc tyef .gx8+ lx9k 2irlx w*wub8xhr.45e. If the charges on both objects are l.hryx ri.8w4bg f5xwue 89x+tkx 2*ldoubled with no change in separation, the force between them

  Two charges are separated by a distance d and ex(lxrkt+q jgrw w.oey30kjxqy017; 29x/ d hjxert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, whary/e3jt+y wh(.xlqj2x0xo0k 1kxj7d ; 9qw rgt are the new mutual forces?

  Two charged objects attract each other with a (e(9g;;a p z7 +3vlmtwrgvprnforce F. What happens to the force between them if one charge is doubne 9(v+r zwga(mptr;v3 ;p l7gled, 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. b x(z6dn2v/xu What happens to the magnitude of the force on the proton if a second electron is placed next tonbvdxz6u/ x( 2 the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens 3l*dm4al *,rdmmr)zl to the magnitude of the force on the first electron if a sd**mrla)z dr 3,ml ml4econd electron is placed next to the proton?

  An electron and a proton are separat2b hd/e;hbl8nqypt92c jh6+ qed by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer tbd ybqjn8l hhqp 22/c;9et6h+o the proton?

  A point charge of +Q is placed at the center oi-s o/agle a1k dt7-i;3;gj7ovxht n:f 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 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 m 7hdtjio:3t-igg/; vlna1o ax-e7 s;kagnitude 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 equilater;cu4i n c d7u7/p9byinal 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 oiyupn7 bcu7i;n 49/d cf 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 vecqowo augz+6zjd9*k./-3 o,q vgl a -aotor?

  At twice the distance from a point charge, the strength of the electricj9v qjj+3 q im-awan3pvsv 9;*x-6 gys field

  Is it possible to have a zero electric field value be-hfjyjykh.y;s78 dy9 vj0x ks1kt;yk+ogk ) 6tween a negative and positive charge along the line joining the two charges-yj76k yhts)k j ;x. s;09hjygvof18+kdyk yk?

  Is it possible to have a zero electric field value between two positmozg: 2 y/xl8jive charges alolo2 xy/ :8mgzjng the line joining the two charges?

  Electric field lines near psitive point chymra w24lo ;fb .kec74 awd:s:arges

  The electric field shkzw6p qz;om81own

  Can electric field lines intersect in v)wwbyu8o7)q7iul2bm7f1m zfree space?

  A solid block of metal in eleic kc-4upg 7n a86 i4u:9gcayqctrostatic equilibrium is placed in a uniform electric field. Give a statement concern47 :kcun-a ig49aqcu yp c8ig6ing the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sp w *:jcv5c1wgshere of equal diameters are each given*1w5gcvsc j:w the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on 3epb8 bk7soj,rt eez lpf6+/;a wooden table in a region where a uniform electric field is dire b7k,3 + jposp/zt8rb6efe el;cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elcxuj9a64r f o :kkb64eectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ground25uqg nej,5nx. vje/gqp0 /)w,ymr obed. As compared to the case without the hollow sphere, the elecgqj)j 5vpbno, r/.,eeq0mgu 5 y /wnx2tric field at a point directly above the hollow sphere has

State three properties of conductorcr70es 1wo z8 wu1tgp7,om.pd s in static equilibrium.

State Gauss's law.

  The charge carried by one elecg-2g4gszgyy 6tron 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 qhrd+gh, c, -jnet charge of +2.00 mC. How many more protons than electrons dhrc,+dgj ,q- hoes this piece of plastic have?

  What is the charge on 1 kg op n5p3u xrn02 h9wb+mqurpd) e.or*p4f protons?

  An atomic nucleus has a charge ofz06 (bw5 )a4go qgx7kg9uv ajj $+40e$. 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 vm srwsvg9:z7c*l5:ln alues of 2.0 and -4.0 mC, respectively. What is the magnitude of thec:ns*z5mgr97:lws l v electric force between them?

  A 1.0-C charge is 15 m frorvq3 b5n*x -z/l:1m l8iewfm bm a second charge, and the force between them is 1.0 N. What is the magnitude of the secon:/wbxfe l15bvilm rzq8 m -n*3d charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart ;b 3.chy hcn5oam.. bpc3gwa1 are they?

  The force between a uc9ix5 +k*nib o dae,d,fj/d*$30 \; mC$ 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 theylvit j 5r5rpp 2nx1qq0 duowb7tp0*-4 are moved to a new separation of 8.0 cm, what is the vx *ur0d4it20njt -ppr5p7b1o5 qwl q electric force between them?

  Three identical poin qj6j2a-d2 4ggm zxn1kt charges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right 2gad-4gj6xq1j2 nmkz 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 on the x-axis. A charge of +2.0 mC ccvzx z/ana426:qk+g6 gj1ybvz;(cr0ji t6cis placed at the origin, -2.0 m C to the right v:6vz ct1c/jbax4g;c(06nk6zaz iyc qrj+g2 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 following positions: Q1 = 2.00 myelv.qcj-/e + C at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is thevyj ec-e.l q/+ magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second ymwk +ncu6l()b dy3wlkk5 ( m2 y2ovl5point charge of -Q is placed at the upper-left corner. It is observd n5bk om2(2 )k+vw365l(luywylkmyced 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0)nzy;s a 6 ftwm-*28pfq73ay ,g;hghit; 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 fow f3 a ;;hyty,szngi*628mpq a-fth7g rce 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)vshu 3mrghjf + cu9eg- 9,yf;.; Q3 = 5.0 nC is at (0, 0). What is the direction of the net force onhy;jh gue 9-93v.fsu c,+grmf the 5.0 nC charge?

  Three identical charges of 3.0 mC are4ws ndtaf ys16p5-atql5, ;er placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticqdtf5 l ; rew45ap-1a ys6tns, force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separq / nk s3alcbf3v8 g nfu-.9n9gnae)+swd1 5buated by 3.0 m. At what point, on a line bgnwn ab3)/8. 1sl qd+ s-c95ff93unngev kaubetween 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 ,tfos /u8 7ccrz3v f7iuz,5 agthe origin and a +9.0-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?ia gof c fz7/8z5cus,v7tr, u3

  Charge +2q is placed at the origin and charge -q is.rgx jyn k1gs9:8h u.u placed at x = 2a. Where can a third positive charge +q be placed so thag.n rx.8u 1 jhusgky:9t the force on it is zero?

  A copper penny has a mass of 3.0 *x 5umrv2 ew3ane)9ld 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 the attj* f; wx9)ppdbraction of a fixed protonbx ;* fpdp9wj) some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a commox1, vu5)fyaqc n point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart unavu5,1c q y)xftil 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 magnitude of the electri.dvzu5 y un)yxff52r5c field at a distd5.2fn vzu f55 yyxu)rance of 1.0 m from the nucleus?

  What are the magnitudegbh/-v mhu7p+ and direction of the electric field at a distance of 1.50 m from vhmb7uhp-/g+ a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the2w54yrbapw 2cy z,xajn0f+9g magnitude of the electric field a902,zy 5gp+nf4 j2 xay arcbwwt the location of the test charge?

  A 5.0-C charge is 10hem k e+*0eb9m m from a small test charge. What is the direction of the electric fiel0m 9+m*heebk ed?

  A 5.0-C charge is 10 m from a small test charge. What is; 9 ej0:iqu;bxykb4bh the magnitude of the force experienced by a 1.0 nC charge placed at the lo4b9k:;ux j yqbi;ehb0 cation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance h hb kyk5v1+4 z52mzuqof 4.0 m. What is the electric field at a point midway between the tmz 5h y zqvk5+14hubk2wo charges?

  A 5.0-mC charge is placed at the 0 c;x95p9m su8lf fitz;km mark of a meter stick and a -4.0 mC charge is pl f5 xsufpt; 9zk;8m9liaced 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 meter stick and a -4.0 mC char bg44bsm4nh y2edcv6etv481rge is placed at the 50 cm mark. At what point on a line 4sdvnc4rm 12e6hb yt48b 4gevjoining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pc , z1c5k,c obp8/qzbwlaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between t c k5b/,cczzwop qb8,1hem?

  Three 3.0 mC charges are ziykj) vz*f0to ht;t00 csw31e ;jj/a at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cent0j*ia1h/k)yjt ce;vt3z s;0 tj0foz wer of the square.

  Consider a square which is 1.0 m on a side. Charges are placed /e uuyi (* wdd).ftet5at 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 (0 f/5t( yud.e)idw*te u, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts 9v o( lb,mp6v s* eejl:y:1pyron a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude9p::yr e1lsoe,y* vmjl (bp6v of this electric field?

  A particle with a charge of 4.0 mC hasef96. 8+irws jmt +emz 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 placedqxs 9xrs0 qx,*b t5c*edv(s -d in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fe95 dd,-rcsx *s( qtbv*0qx sxor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed b7evt1 3ez6upnl f4)dla(zr :497ecctv:j z ginside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electricfz (1ee r9zt nell zpvdg7 43tjb6cuc:)v 74:a field?

  A metal sphere of radius 10 cm carries a cy -cd va )+0jc,qwx3v, gu6tgcharge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sug au3ctvjdcc,yg -+ w),x6v0qrface?

  A metal sphere of radius 2.0 cm carries a chaab.l+us , v6gcrge of 3.0 mC. What is the electric asu, .vgbc l+6field 6.0 cm from the center of the sphere?