State the law of conservatixo:s(4a gg+;r ihi+ 9s v+fzkion of electric charge.

  Is it possible for two nu n4vtv-c-e/ gegative charges to attract each other?

  Is it possible for a positive and a negative chargoy rjny/z ei:y4e :-9se to attract each other?

  A glass rod is rubbed with a piece of silk. During the pro s*un)ppq* *, dd,6 shgh-kpklcess the glass rod acquires a positive charge and t,d sh* phq-l,kdp6ug)*n*k p she silk

  A proton carries a

  The model of the ato/m8xf.6rekj pv1kh/ d m shows a

  A neutral atom always(4 1pin9emity has

  An atom has more electrons than protons. Tnjc6nupj8f(t*v,o djs 18t (zhe atom is

  Materials in which the electrons are bound vjv-f +qi- 5+zdrpow .bery tightly to the nuclei are referredpv+qf+zb-i5ojd. -wr to as

  Materials in which the electrons are bound very loosely to the nuctbygk ).9c18n f8w*7ljpqe bc lei and can move about freely witngk7 q8c9tlc)peb 1 y*w.8bf jhin the material are referred to as

  A negatively charged rod is beh3i*(d*dr em2ueu8a rought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged a*r2ed ui *3hmue8( derod will be charged

  Sphere A carries a net posit/95wng/ps7ku ( r dqheive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly t qk 7w9e/5n prdugh(/souched with a wire that is grounded. Which statement is correct?

  How can a negatively ch0j avs4vf5-scarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched witulk),z w( pw;l)d 5liah a positively charged glass rod. Thkd,)5(wl ll; z)iuawpe electroscope

  An originally neutra/rl.bz ,xst ;q2bs2 kql electroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is rrt;/b ,xbl2qq zss.k2 emoved, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. cb:i5(x(q a8 kwdt 5phjxmd1 2Then a negative object is brought near the electroscope, but does not touch it. What happens to the leav qd 2j58cd((hixx t1p:bw5kmaes?

  A large negatively charged object ist3)dp)/hp ; 4f7jse* rhscx fs 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 object. What is the finalrp)x /sj p7sf3t*d ;h4s cfeh) charge on each ball?

  Charge is

  What are the units of theap 2yw)/ .s (zgp4gyws Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancimh h*5) ktd,a l/km/ksr *,ste d. The first charge is larger in magnitude than the second cha khtaskh k5lt)* /*di,mmr,s /rge.

  Sphere A carries a net charge and sphere B is neutral. .lg65mce x50 kfl df:qThey are placed near each other on an insulated tk.lm:df5xf0e q 6 cg5lable. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Iye, yx(09qdc ocl znk9l5*k (wf the charges on both objects are doubled wdokc(y z5xk*l0yeq9cl9 n(, with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forckcyc7e1.9 y*i,yifn m es of F on each other. If the charges are separated by a distance of d/3, what i9en i .c cy1yky7*,mfare the new mutual forces?

  Two charged objects attract each other with a i,wp f7dd w/vus/i-wd a ci.8;force F. What happens to the force between twu.wdw7;-d/iisfap/ ,vc di8hem 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

  An electron and a proton are separated by a distance mo qb(/zfs a/)of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed(zso /b/ f)maq next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What 8fasv ;nht:0g happens to ft8hn0v as;g :the magnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hap1d g(mlmxiy7:j6f2 nlz 7ubc5 pens to the s ymlgx:lnjd ifmzb275( 6u7c1 ize of the force 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. aqbd3ff5+6 ip 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 onf+6fab 3id5q p 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 equiln ,gy61i p2xo gqgn93wr1ous :jyum7 -ateral triangle. When a second charge of +Q is placed at 2-os, 3onm i7ju1unrxg y9:g 1wyqp6g 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 v: ez;ck8.wdpfwa/ xp;tse83 not a vector?

  At twice the distance from a point charge, the stretzrbjkoir6 l4g3+ 1s d-2 9fnpngth of the electric field

  Is it possible to have a zero electric field val vi hnp. l3:*0mvkv)r.ftsmnmqt5i9 )ue between a negative and positive charge along thmq5rttvsiv.:n)hm p3.* 0imfl v nk)9e line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargeiz ; u2+kkn7irs along the72 unkr zi+;ki line joining the two charges?

  Electric field lines/gje3jpsrc o4hsnc)9shxh 5/k;0dns d*5t w- near psitive point charges

  The electric field shown vh6x+ a s4tgy*

  Can electric field li2mds .l21 flwwnes intersect in free space?

  A solid block of metal in electrostatic eq,l j0xy, prs .x0drfl/uilibrium is placed in a uniform electric0,.j lrsrfp,/ xxd y0l field. Give a statement concerning the electric field in the block's interior.

  If a solid metal spherp;v/y)s;qmg n e and a hollow metal sphere of equal diameters are each given the same chargq)sg mp/v; y;ne, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restsx m bm61()hb35: rp2jx3embg+mt tuce on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the bltmm +e2h3g61c(umj 3xpem)r :x5bb bt ock's top surface?

  If a conductor is in electrosta20 h64pjqah9e*yproqtic equilibrium near an electric charge

  A positive point charge is encms8pmty n ;tjl l11. 32;jemlclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fie;1j 32 y;cmlj mm 8.s1lnlettpld at a point directly above the hollow sphere has

State three properties w 9q+j1/r4s+lhxknjnq;; i oqof conductors in static equilibrium.

State Gauss's law.

  The charge carried by one gjcog2 ,x(g)z*8qzw *uk)yyi 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 has a net charge of +2.00 mC. (vhckk7b 3)biHow many more protons than electrons does ti kh37 bc(v)kbhis piece of plastic have?

  What is the charge on 1 kg s4c 5mr kzyp;ry16pd :of protons?

  An atomic nucleus has a chabeh 0yy01bxr8.b. lyp rge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated botlt - rejq/2;ysm8j4 y 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betweeyjtt 4s /o8re -jmq;l2n them?

  A 1.0-C charge is 15 m from a second charge, and the force between thetrxha u 3d-30+std,)vx 7bb75z*hbe/bx srdgm is 1.0 N. What is the magnitude of the second charge?t7vd)s xhr sr3,t*gadb0/x73bb u5- h +zexdb

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arer( sr+j8 zvqy4 they?

  The force between a h +qmm (trilo y:,;nh)$30 \; mC$ 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.js5-pe53u g q(hdxs1iv:ym xo4i5rb9nr7j :w 0-N force. If they are moved to a new separation of 8.0 cm, what is t(dh:u wbo94py5i xe5r g1 jq-m7jsri5vs nx 3:he electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firscr/.n* zt7qs)sh/hl at charge is at the origi7*crltsa/.hnhzs q )/ n, 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 +2.0 mC ic3rvn v4)mbk,- (irhys 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 a)b ,i3yv4n(h-m vck rrre 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 mC m -6u6gsxxaz 4fnh7 .rat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is tz xnu-.ha s6xfmg7r46he magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placedq 0oi zx.h q/(zok3dq(enwa07 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 magni 3ohq(oe 07zqnk.zw d/ax(q 0itude 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 nCnil) ,drac/ (n is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude)(cn,/l ndair of the 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 m); * bf+pc /:coiw(cmzb -Q3 = 5.0 nC is at (0, 0). What is the direction of the net force ocwi c+ z/:pm* fob(cb-n the 5.0 nC charge?

  Three identical charges of 3.0 mC ar3hal*xp(4 :fzhs, bium*m ;zke placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is 3xkia :*z zbm4 lpsh(*mhu, f;the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which2gr3 v6 peiom/1zd5;a n, mren 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 ac/irn;3mn2eo pavr,6mg1de5z ting on it would be zero?

  A +3.0-C charge is at the orghzjqjkf: 6a:hwu 5 +jt-78lc igin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third chargjg u-:8cl6f5+q: j jwzhh ta7ke be placed so the net force on it is zero?

  Charge +2q is placed a)s1ffz4)9r i4ttpu x5qxrtn9 t the origin and charge -q is placed at x = 2a. Where can a third p9pti)u4tz541xrrs) 9 q n xftfositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o/bt-gl/m 5i fjf $4.0 \times 10^{12} \; electrons$ 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 e;6pxq,mssaa )v,5urthe force of gravity by the attraction of a fixed proton some di,es a;q)xrvs6 pmu5,astance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconss) *( yuub. e2elk/xqducting threads which are 30 cm long. Both are given identical charges, and the electrostatic resql(yes u)*2 u.bk/xepulsion 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. What is the magnitude of oocti+ .6-,cu x+dgkw the electric field at a distance of 1.0 m + o ukcg6x,.cow+td-ifrom the nucleus?

  What are the magnitukithek mp( w .t n+sy6:o)i9p9de and direction of the electric field at a distance of 1.50 m from a 50.0-nC n ip.y9t:p9eo)wktmi( hsk 6+charge?

  A 5.0-C charge is 10 m from a small test charge. What is the mad b cize6po+)5:ttx1 ggnitude of the electric field at the location of the test char eg:x6) oc bz5tdt1p+ige?

  A 5.0-C charge is 10 m from a small test charr2ph , m7(xl)x, lq52xdxxclfge. What is the direction of the electric field?c,x2r fpl h 2,mxdll)x7( qxx5

  A 5.0-C charge is 10 m from a smalli1 2)ga4(h far5mly 2sel0bah test charge. What is the magnitude of the force experienced by ) as yr(l52 42 igbehhmaal0f1a 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 be/.aq*gyae8 qi 2ns +ywqvw t nui4//4y a distance of 4.0 m. What is the electric fiel2+4u8 ./e iiwnwy qas/4qenyav*qt/g d at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and alvv*b p twt83;ta ;.nv -4.0 mC charge is pl.t;b8 3twvl n;vtv*ap aced 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 a at6 iw :v1 spwmxursp(;8ei:2nd a -4.0 mC charge is plac12xemw: vp;si8( arp6t wius :ed 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 -uo-o:vq:l::.rv(p3q wgoe ;i u gtup,7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electritv:p vo::.g ,pq;ueog w (u-rl qo3i:uc field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side mppajsy( 6p:e/r488c ysxutk /-y0kr0.50 m. The last corner is occupied by r 0e6jk/( psppc/yk-88 xry:a4mstuya -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square whichwfaj tn8cy)u) +v-(ngtk5e l) is 1.0 m on a side. Charges are placed at 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, 1). What is the magnitude cvultgt w() 5a)n-f+)8njeykof the electric field at the square's center?

  A force of 10 N acts on a charge qb b44tcmpb me5 x(:c4iql z-0of 5.0 mC when it is placed in a uniform electric field. i0clx4:m qeb-pqcb5 m44( b ztWhat is the magnitude of this electric field?

  A particle with a charge of rx4 8gbt7y5f1pbv8 lifs:jf6 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 pl4dvx,eqjqr5smz q 73 l5zpc-wbr8-2faced in an electric field of 6000 N/C pointing downward. 2,4blrzqqrc7 q3w8-zvp -5f5msd jexWhat charge must be placed on the ball for it to be suspended?

  A foam ball of mass p7o6 affn is(/0.150 g carries 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 and diri/6fafs( pno 7ection of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magni 2fhg.sh12 ;x fhao9m kq19nhitude of the electrichao fnx.9 f2h;g2 hs1imh 19kq field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the 7(u5mfx g0o d3z(tv 9agawv8p electric field 6.0 cm frud (z0fmp(gavg5tw38a v7o 9 xom the center of the sphere?