State the law of conservation ofeqvd ge ,gww;4ilj.n8 v(p 5 7pbmn42m electric charge.

  Is it possible for two neb-2 myro1xsr 0gative charges to attract each other?

  Is it possible for a positive and a negative charge to attractxjx0)e)zpn ) ed,8zy+8 ni; pvhqmfn, each other?

  A glass rod is rubbed with a piece of silk. During the pyczvm5 f9rw; -rocess the glass rod acquires a positmz; 9ycfr5w-vive charge and the silk

  A proton carries a

  The model of the atom shows6w0 gw/)fcoj8q. wpis a

  A neutral atom always ha vo a:-xccmgf ebszu-mk.kmh2 :d8( .,s

  An atom has more electrons than protons. Theln /hhb(r5g 9d atom is

  Materials in which the electrons are bound veryish; x1gycoaq5/ ; d93)ukwfy tightly to the nuclei are referred tya/sioh d1w; kgu;yc3f 9q5 )xo as

  Materials in which the electnq,4b3m:qs x mrons are bound very loosely to the nuclei and can move about f, 3n4q:sbmmx qreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharge12odu nmszc;( 5x rex,d metal bar. The en;nux21xc(z rsd5me,od of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is m1x5bb i,izg8/4 5ajs6mawz d neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which state i/mbija wa5s6 d,z1xz45g8bm ment is correct?

  How can a negatively charged rod charge an electroscope positive4twb:s8zh hsgu e,+ z;ly?

  An originally neutral electroscope is briefly touched with a positive3pe1g;m cb fiq58ceuhx3 3lm,ly charged glass rod. The electrosc58mp u ;3 h ifee33c,blcq1xmgope

  An originally neutral electpisl+4 t0ore;0f sq96z+ybcvroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrofqs409e ;yol bit0zr++sp c6v scope

  A positive object tou kw .)rx.hwkn4.le )glches a neutral electroscope, and the leaves separate. Then a negative object iwwk)kh.xgr .) e ln4.ls brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins /;oa1 im+a yjm5t;kvuulated 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 doy1 uav ;;5o ik+/ammjtes 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 th60b3 ,ipe g ( z2ksq+hn:oktn,q)phove Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatez d pttn/79uu+d by a distance d. The first charge is larger in magnitude than the s/dzt9+ut np7 uecond charge.

  Sphere A carries a net charge and sphere hdy 6/3q j g:knvk-e7gB is neutral. They are placed near each other on an insulated table. Which statement best descri/6 -vyj qe:g 7dk3nkghbes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the u(v+n o ;gyp6q/vd ib18 xb3lpcharges on both objects are doubled with no change in separatid3pul(+16 b/o; vbyqi8xngv pon, the force between them

  Two charges are separated by hq ep63m4j0et(cv)zma distance d and exert mutual attractive forces of F on each other. If the chargespeh jt6qm0ze)vm c( 34 are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the forc- 1lnn5wf*h.h p(s stle 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? sfhpn*-.t ln hls1 (5w The force is now equal to

  An electron and a proton are sepa mn*; qanqz-ksu61amc d:bi8 4rated 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 fir61q;amskznbm8-:qa *ni d u 4cst electron?

  An electron and a proton are separated by a distanc9s5/p mf ykh*qo;vxqkz4q18 x e of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the h qzq;y8f 1mo5*xk kq/x94 vspproton?

  An electron and a proton are separated by a d6hg i,ua fz.) 2fq3mwristance of 1.0 m. What happens to the size of the force rg.fq6)zmuaf3 ih2,w on the proton 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. When a seconm,cj; bo +na+bm( jt1xd point charge of -Q is placed at one of the s tbj+ n;,+m(mc1xo ajbquare'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 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 equilateral triangle. Whh0mtwgtln /3 wu/ w,o6y2o)fx en 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 that acts on the center charge due to a third charge of +Q placed at one of the other vuxl,o n 2wg3oh/6f /tmw0 tyw)ertices?

  Which of the following is not a 8tfe9rjwqqc/c j ) 7w q4tg2ikz xo*/0vector?

  At twice the distance from a pykco/ ot5a m40wwh e3+oint charge, the strength of the electric field

  Is it possible to have a zero electric field value between ft9 wnh2zlb4x73 u.lia negative and positive charge along the line joining. nfbu9hw 34xz7lilt2 the two charges?

  Is it possible to have a zero electric field value betw p77)- w+jjzni:mdqexrd09 e w/to/hdeen two positive charges along the line joining the+/)w9r:0iexzd pq7 jdnw/jdhoet7- m two charges?

  Electric field lines near psitive pointpt5v ws++upeurzu0 -ki s ;c88 charges

  The electric field shor;wy es7,py; d ga++5vh vsvi*wn

  Can electric field lines intersect in fre 20xa *6 j1;ly i zr)fj+xpqc3dxiihy*e space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform evwz:6,ysj: z f g)rour-ho. y ob6b69vhh(th+lectric field. Give a statement concerning the es+y y6: 9:w(zh6o6gjb tz .bovu,vhrroh-h )flectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each e2x*. l3r 9e+pu gkrqkyk3h)zgiven the same chark 3kp2 k e+u)egr z3hylq.x*9rge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests o142 ;ke ywhn*p:cr *n obdiz3bn a wooden table in a region where a uniform electric field is directed straight upward. What can be said concer*2zdncek*hy nopi4;w b13: brning the charge on the block's top surface?

  If a conductor is in electrosb5d z,x5n h0kptatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that isrd* e k5x3qlx2 grounded. Adek xxql r*523s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductc(hgl9v43(n um g1rogors in static equilibrium.

State Gauss's law.

  The charge carried by one ele6k 8g. ovhcs8actron 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. How many more protons than elek02lf g4v)85ypvun e actrons 82nf ay) vpu4lk 0v5egdoes this piece of plastic have?

  What is the charge on 1 kg of protonskfp;vwk/-f6pa4zb 0 p ?

  An atomic nucleus has angl )/xv0ji)f 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 charge values of 2.0 and -4.0 hhk,d*em,3- che -r,2oskkbzmC, respectively. What is the magnitude of the electric fo c3z*er, -b, ,esmkhh-okdkh2rce between them?

  A 1.0-C charge is 15 m from a second charge, and nt+42roqz))znox fbu *f )g-m5 vcqn:r( 6qiythe force between them is 1.0 N:cgx z)n6i5v frto* f-uq4ynm2)or(nq+ zb) q. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them (,g a+dq ;9vgn tftep3of 1.0 N. How far apart are they?

  The force between a 4sx*q nlhu f0cx6h; qj(+/gks$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apadcgl2 x*o+ o2urt, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between theo c2g* duolx+2m?

  Three identical point charges of 2 -kr;lmgvf 88 tdgwif (zzq);1.0 mC are placed on the x-axis. The first charge is f)dfmi 8kv8 z1 (l;trz ;wgq-gat 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 on the x-axis. A charge of +2.fwv51 b3ebauggl 26m(z p: jzdp:hp0 +0 mC is placed at the origin, -2plhu 5zpg 1m j6+b 2zgpbwfa(0ed3 ::v.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 are located at the followin:4k2vag0e u kvg positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC 4 0k2gavuek:vat 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 a square, and a su q3ezw-9xf3fr+on)wd7 b-o aecond point charge of -Q is placed at the upper-left corner. It is observed bx 9-7aodfqno3u-wrz3+ w)fe 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); Q2 = -1.0 nC is aq fsyb;dnut .p 8pv0:7t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC bu.s 8pq;vp0y7 :nftdcharge?

  Q1 = 6.0 nC is at (0.30 m, 0);kif*8- /bqtx h ev74pg Q2 = -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 the 5.0 7kh*vf t-xqi/b8eg 4 pnC charge?

  Three identical charges of 3.0 mC are placed at the vertices *m v*p(3x* bid72 t1vohgpjtoof an equilateral triangle which measures 30 cm on a side. What is the magnitudep3tb* vdmi (*vgx*ooj27tp 1h of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which a), yv0e-dyg k-:e. iazi dlk+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 such that the electrostatic force acting on it would be zero?a -+ l ayk.e-0ikeidv )yg,dz:

  A +3.0-C charge is at the origin and a +9.0-C charge izetd3 d7c*oj(s at x = 4.0 m. Where on the x-axis can a7jz*3coddet( third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe+nt1k 8q r/eoy i3-d3.hvlmt r7gw7amre can a third positivt1he 7yk g8a-3to d73lvmn /qrmwir.+e charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Akfiu j7uyqo 9..0lz5j 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 3jt,gm o :kg5rof gravity by the attraction of a fixed p t: ,j5ok3rmggroton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads f+5plcmntd6e th83e. which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thred5p6+cht3 f net8. emlads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitudk hhm,wl5s)b .e of the electric field at awhl .m,) khs5b distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dista :wk4kycx8d)). afvqbnce of 1.50 m from a 50.0-nC charge?w)q.k v)xa bkcd4y8f:

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude se/:-6 jv 7aooo)ofr* ;sdja mof the electric field at the 7o*:dj -r m)s/a6ve j aofo;oslocation of the test charge?

  A 5.0-C charge is 10fubo6ht*d m 9v9et.x7z8+6bcmr2 hcp m from a small test charge. What is the direction of the el+m9zt69.e6x*bpf ob h r ch2dtm c8vu7ectric field?

  A 5.0-C charge is 10 m from a sm1 zs*/(8ghk+s mjbgbbss r:- kall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed arb zgsb* s+g(sm- k 8s/:1bkhjt the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance o hd pkx:a8t+ b:-6odbif 4.0 m. What is the electric field at a point midwadt+dp- :a8b:6oixhkb y between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andtz32t t;8vzggxo)vfn0s/eg 0j0goe/ a -4.0 mC charge is placed at the 50 cm mark. What is thg0)to tzgge8 fgzse/ ;020tx vvo j/n3e electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a tvjb;e 9p (oa7meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fiet(eovj pa 79;bld zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 3 pjwj6*3atpfej 9ou-4ekr:pm. Whe3-tfp96pe3kr uoj j4ja *w :pat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squam:ey, ;uxzwy/if1, q bre of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elewi bq ;y1ez/x,y,:fu mctric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed a/ lhvt wck:gs53rr*35pcj4pm t 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)rt:scj5m l43rgkpcvw5 *h3p/; -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 cis 8hbd i0a99xgon-ip 41 0zzof 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric c89iignois9b-zp 100dzxa h4 field?

  A particle with a charge of 4.0 mCvb,ihbbc/t 02 re7 1/jzlb:wx 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/C poinec6;/at xk*xnting downward. What charge must be placed on the ball*xe nx6tk /;ca for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. k l 3mfureeu47me -nwnj)kqu1.m+d5 - The ball is placed inside a uniform electric field, and is suspended against the force of grn)krnq ef74l1md .3emu -ueu-j+5wm kavity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm)s :,4 goiowqz) o7c)sjuf/n g carries a charge of +2.0 mC. What is the magnitude of the /w)scu :qgzoij o, o f4ng)7)selectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chmta :dcsrt5w 08 8jsn)arge of 3.0 mC. What is the electric field 6.0 cm from the center of the srwd:sc)80t8mt sj5a nphere?