State the law of conservation of m85kmyesk9fc3i3r a(z p p*5l electric charge.

  Is it possible for two netim;3un wldz0j;e3(z5w ob a )gative charges to attract each other?

  Is it possible for a positive and8ucpe h ei- vt,+3tzlr,1+ xit a negative charge to attract each other?

  A glass rod is rubbed with a piebf3h wv*5l og.(i ,ounce of silk. During the process the glass rod acquires a positive charge and the sb*3 w.(hov5 lg nfuo,iilk

  A proton carries a

  The model of the atom h2;w hzggi; l0-jf .znshows a

  A neutral atom alwayn wgh*ed/ vadk(-(pp0fm7xx 6gn n3g2s has

  An atom has more electd)p1g)drahy h.yo4 r1rons than protons. The atom is

  Materials in which the electr5d frg4-f4 m8zpfcic 1ons are bound very tightly to the nuclei are referred topdcf-rig5c 1mf484fz as

  Materials in which the electrons are 2ume,yh z+ c,c9sy :iumkpn+5bound very loosely to the nuclei and can move about freely within the material are referred y+u5 ue+,,c:m zmsiy n2kch 9pto as

  A negatively charged rod is b 62r:d* ohfbhrif+meq2f* 9yirought near one end of an uncharged metal bar. The end of the metal bar 2:r* fe9qmhfiy+i hdo fr6*b2farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sihj-n5- az wm3phere B is neutral. They are placed near each other on an insulated tab3-jh5an wi zm-le. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elect a953s 1ucx6t1fthb csroscope positively?

  An originally neutral :r 11tc8wlh,rs+a7 gd ak91mf xxk1cvelectroscope is briefly touched with a positively charged glass7ksm+ 1lxr8rc1ag1h9k:1 cv afwx,td rod. The electroscope

  An originally neutral electrosconar1e +8i4g(oq8nmy dscjv -.38s xo tpe is grounded briefly while a positively charged gl ysoneva1ox (84gn+3-rj tmq8 .c8is dass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral elec7dhi5;1aby 4zcg k tf+troscope, and the leaves separate. Then a negative object is brought ny7b czh4;+ 5kt1g fidaear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargep0gtj t,9zy;gdl en38 d object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second ngt,p8ty d;9z3 n jgel0eutral 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb constantnj /kt8yjj3y6;lyk v um(,w*w56cwu w $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is, gu8gwk*tp+19w gfg i larger in magnigg+pitf w ,* wg9ugk18tude than the second charge.

  Sphere A carries a net cib ta a7b3qxp6sj 3v0)harge and sphere B is neutral. They are placed near each othe7jq ias)p bat306vx b3r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects a 2zkr s:d2dijovd5xp87x m 8.gttract each other with a certain force. If the charges on both objects are double25ks:j .xdrzp oi7mx gv 8dd82d with no change in separation, the force between them

  Two charges are separated by :eys5-fr5,j4oy f9ubclb p y+a distance d and exert mutual attractive forces of F on each other. If the charges areoj -cfuyby9rsl: 4y5+5f bp,e separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth 82f2)fdfobfpt eyt,ud-q+5k er 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 be )yfpt b2+5 dfd-equft 8of,k2tween 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 distanceacd;wgw7595d r/u kobm x9 cs0 of 1.0 m. What happens to the magnitude of the force c rwdxk7bagm;5/w9c59uods0on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 .q+ cn eaz.j. 9pvtu)hm. What happens to the magnitude of quntahj9v+ .)pec..z 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 mrsd-j1a c p wqe9 -mi,9:t9ubm. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the protoweqs amj 9:m9 9u-i,ctbd1 -rpn?

  A point charge of +Q is placed at the center ofgobm 2f *7udy7ha94 rf 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 hay*f obmf u7 947rgd2square. 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 ofmxcx1g +h6* spvxn5899plvn m an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic for+ gxn ph s95m69m8pnvcv*l1xxce 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 vector1zy vqqyyp1 /ns -k0h.8tk1 kw?

  At twice the distance from a point charge, the strengthv:zyh7d k47 pv ck6bq5-q. ayb of the electric field

  Is it possible to have a zero electric field value between a negative and positbknl*7m*+w5 wb(+ wh (9xu6cspwz aelive charge along the line joining the two chb(lmxueap+hwk b + w*s5nlz*w 76(w9carges?

  Is it possible to have a zero oar5:c grj 3swde0 p t4gcnf49 .1/bxlelectric field value between two positive charges along the line joining the two :4r.c4c1lgja9b / fx p05wt geo3srdn charges?

  Electric field lines near psitivex4)jzcz:sg2 dw .,m4 v u)5xldo:jt go point charges

  The electric field shown tk ht7w)h;s wyk4f5eq:* :/(av ramht

  Can electric field lines inv*g xu,wt,+ -pu +cbfqtersect in free space?

  A solid block of metal:u tqojc; bcootqb 7x2d73,. n in electrostatic equilibrium is placed in a uniform electric field. Give a statemen:,cqdbx 37j72 o;uo. ntbtqo ct concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arel-h c 7 qvvlvwq/)4m qmsw sjnp0-9,7n each given the same charge, the electric field (E) midway between the center and the surface imw4s n/qjwls)-n v9qlp0qh7c7 vm,-vs

  A cubic block of aluminum rests on a wooden table in a region where akvx(1p,8 vb4 x6 akoca*vyar7 uniform electric field is directed straight upward. What can be said conkay 8a*ac1(7 bx,k4vv6p x rovcerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elecvc*jhbw) +ubl6 pou.w2tro; 0tric charge

  A positive point charge is enclosed in a hollow metallic sphere that ph( - )7zkj8nn.mj j7st so3sgis grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere hasj3jog hms-j77.st)sn 8kn (zp

State three properties oo o.zc )e/yk(zeax j,hey1h9:f conductors in static equilibrium.

State Gauss's law.

  The charge carried by ol.hn g a9,wd4nk:v7vcne 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. How many more ),ptxxyh4d9i8k 7:s k7m n*tb)xk bji protons than elexk k*j, i8 t4)xx )79:kb7hiptmydnb sctrons does this piece of plastic have?

  What is the charge on 15s2j kuxgflh9m ;nx oh./t mp:u7b3.+ra9hpv kg of protons?

  An atomic nucleus has a charge of y1w .ef)zx/hq tlx. d($+40e$. 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 vawgb fouticr 715u35v0lues of 2.0 and -4.0 mC, respectively. What is the magnitude of thb5uuifo cw rv50g 1t73e electric force between them?

  A 1.0-C charge is 15 m from a second ch t1*tj50vj,ffsfi(m r arge, and the force between them is 1.0 N. What ,(r fjsm tjt* 0ifv51fis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f1wlpz.c5a q7( 4f zwxmar apart are they?

  The force between a l-e06cef ztp+cg5ray;ag 4a 2 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial gdj*:2gu3l plly 2.0 cm apart, experience a 1.0-N force. If they are moved to a ne2lg plg:ud3j *w separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on th) d+ u/bge5gp)zmsvok u.- 3ige 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. gs)udz3gb5.o i+eumg p v k-)/What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on b6ca6orx c5)7 vgi,eqthe 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 elect)c ixvo c 76r,baq65gerostatic force which acts on the charge at the origin?

  Three point charges are located at the following gpwv cjmhvj:c(+5 g. 376 aeynpositions: 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(wgg +mjhy e:6 j 7c.nc53vpav 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 point cih92 ))4x +wgxyhk:c:sbd uioharge 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 thatu+g o4:9xxwh)bd)scih2k y: i 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 at (0, 0.10 m); Q3 = 5.0 nC is 8g(f/be bw3p cgc)7 -vl o ,f3lzramw3at (0, 0). What is r7coe(w3 baw/b cl8- fg 3,gzpf)3mvl the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCt gd0;ww; r5p*4u ijfq is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the d0;w p ri5qftg w*j4u;5.0 nC charge?

  Three identical charges of 3.0 mC are placeqyim70yk )-4dg9mo l nd at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whi-d m0q)k4 ygnmo iyl79ch acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.01 e (innuh)53;o8cpot 1 ryyrg m. At what point, on a line between the two charges, would it be possib(yg13ntn5uc p horo)1 8irye;le 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 chc:b;i.g-i3w*ate n-gox 2lcw arge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the nee3;:.i b- a*o2wgn-gw lcxt cit force on it is zero?

  Charge +2q is placed at the origin and charge -q is *hiaxigj k.(1kl 6 b(z )xmwb2placed at x = 2a. Where can akib z 6b .2ijmx)wa(*kgxh1l( third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.oterlvje1q-f 396r;ua97h ta 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 for7bj uxgd32e0y ce of gravity by the attraction of a fixed proton some distance above it. How far above xyb3gjd02eu7 the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point3 79id.e+dxzuy.w4q r jw di6l by nonconducting threads which are 303.7qid4 l dwi.+6yu9rd ejzx w cm long. Both are given identical charges, and the electrostatic repulsion 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 the electric fmvil7hbm 5;fx ha2 l.1ield at axihmlm5h17l b.v2 a;f distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.j kcva; ps q.a79lp- xjh36f7h50 m7q-;3.9 c67j ljaxa hpfpvkh s from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whab q5nm0h-g v(mt is the magnitude of the electric field at the location5b hqmvn -(m0g of the test charge?

  A 5.0-C charge is 10 m from a small test chakyc+ lkstx6 wh0+-l ;crge. What is the direction of the electric 0k+ks- w;x h6c tcy+llfield?

  A 5.0-C charge is 10 m from a small test ct:v6m d ,m b-/cx*lcqpharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locb m tdp m-6*xq/:lvc,cation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance-/q5eg l5n(tgsc bng2upe8 s7 of 4.0 m. What is the electric field atpe5 b gss2ue75t8lg(-qgnc/n a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of o) m4) sf1(mhqzy9ubf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electriby9omz(4q mfhfu1))s c field at the 30 cm mark?

  A 5.0-mC charge is placed altzn4g9-j c *bt 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 l*ng 4bcjz-9t line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.2;i*td rgg 4w-w0 m. What is the m*rd-4;gg iwwt agnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.q nc++:ez o(4d3vt pd o:u+bvt The last corner is occupied by a -3.0 mC charge. Find the e:vb3t:e(ovp++d 4tc qon u+d zlectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the alfie6xyc3697uydd4 ,gp ;chcorners 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 of the electric fie6 fy3el x,ghydapu6d947; ccild at the square's center?

  A force of 10 N acts on a charge of 5.0 mCj;km k75;tfyihcla81d*dw 7f when it is placed in a uniform electric field. What is the magnitude of this electdiflt8dh 7c;k7w yf ;1m*ja5kric field?

  A particle with a chaos9w8 br/psliu -5,fsx p:3p l. iwcx2rge of 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 placed in atp fh/10k vnl4n electric field of 6000 N/C pointing downward. What charge /kp 4l1fth0vnmust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charg*d6 iuzzm t0f1e 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 direction of the electric fim01i6zd*tzfu eld?

  A metal sphere of radius 10 cm carries a charge of 2t*h - *o ydibrefib24+2.0 mC. What is the magnitude of the elect te2h4*yd- bbir2o i*fric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ; t rq/oczjgiz.6zlzx7x 8593doxf4n charge of 3.0 mC. What is the electric food79gt6 f/3q4.8 x crzz5nx x l;jzziield 6.0 cm from the center of the sphere?