State the law of conservation of electri)6ooc4 fex( dbo5 u5mnc charge.

  Is it possible for two negative charges to attract ehl7g8rwy-v nj mjxpi)pw 2* :8ach other?

  Is it possible for a povg9 wkn4;)j chsitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece o (cmoxgn5(5b5re: bnp68 po ngf silk. During the process the glass rod acq 5 5 pne5n8 ooc6bbg(g:mn(xpruires a positive charge and the silk

  A proton carries a

  The model of the atoml ,wc-*4yz v3 aa)2km; vm ej8az4xwdgo,j. pq shows a

  A neutral atom alwayhfj9 r;2*pfufs has

  An atom has more eleb)(wl)z jg/fit7 l0qj;wn+euctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucle 2xxtjjaj +7p(i are referred t+ 7(j2txp xjjao as

  Materials in which the electrons are bound very lo h6 g w5n5c,ylkppcq56n04sj mosely to the nuclei and can move aboum,j5 s05kql4 g6ywh6c n cn5ppt freely within the material are referred to as

  A negatively charged rod is brought near one end c4*h. mr pe,eakuascj35a u 5(of an uncharged metal bar. The end of the metal bar farue 5 5emr4akau,*3 asc cjph(.thest from the charged rod will be charged

  Sphere A carries a net p//j :ej1vczeebo5 -m 2ow8bgkositive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphe-e28 kbj m/geewocbo1:z 5v /jre B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively +/1 i4uvm/y6ysnj00jc): gkwhrf1jl.jnn we charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pq ,g j3csk34vfositively charged glassv 4s jfc,3k3gq rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positiveld7f kif1:n 6fny charged glass rod is held near itffi7k1fn: nd6. After the glass rod is removed, the electroscope

  A positive object touches a neutral elece+us (fx yu21jtroscope, and the leaves separate. Then a negative object is brought near the electroscjeyxu+ 1usf 2(ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutraym g4 r:tfyr8drp:z8*k5 7v rey xdg4/l 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 *yz7v44gy5kxgmr : 8dyrrptf/8dre: 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 Couac p,t93ns *nplomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first d ;)mgh c:cm(u 5z0errcharge is larger in magnitude than tm er;rz0mch:5 u )(gdche second charge.

  Sphere A carries a net charge and sphere B is ne61q/i c qg42 shesnsnu/.p( lhutral. They are placed near each other on an insulated table. Which statem.i1husclg2p64s(/q nen/sq h ent best describes the electrostatic force between them?

  Two charged objects attract each other with a r jls+w2 n+np6mqpks;q28vo -certain force. If the charges on both objects are doubled with no change in separation, the force2nqp;6ow8n+m2+jpsqsr k- lv between them

  Two charges are separated n.mc s ;c8:cqyby a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the .qms;:c y8 nccnew mutual forces?

  Two charged objects attract each ge,sbds2 62n4l l9lt7bf lwz-other 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 between their centers is reduced to one-fourth its original vl- 9lblgz6dsn2 7e s4bfl,tw2alue? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens top;a3; j e0opy4 cvqsje*p;* hq the magnitude of the force on the proton if a second eep h04q ;*; pcoep*ajsj3;qvy lectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hahk *(wkv -0 p :uncltp0n;:dof:e rlj-ppens to the magnitud kpor(;*u:td --pf:k nlnwce hjv0 0:le of the force on the first electron if a second electron is placed next to the proton?

  An electron and a prot;6 iv.vplhxu 6on are separated by a distance of 1.0 m. What happens to the size of the force x.uvvp il;h66on 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. W9o0hyk a+;eu:dg uh((2 ukpk nhen 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 uko +2dgh0n yk9pah(ku; :eu( 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 ac5ez+ ) i ausp, rixhkm6n-4.nt the centroid of an equilateral 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 of the force that acts on the center charge due to a third charge of +Q placed at one of - ca4.em k,ni)szp 5 6i+hnruxthe other vertices?

  Which of the followia,ayuoa4p3: t f84t drng is not a vector?

  At twice the distance from a point -c7obpi ev.muz9gn: 6charge, the strength of the electric field

  Is it possible to have a zero electric field va5ip-v94;2 /lsogllr tb p.itm lue between a negative and positive charge along the line joining mlgoptl-5i 4ptb r2i.; 9l/vsthe two charges?

  Is it possible to have a zer zcz0vj bo vtbw81ho+ :u3er9(o electric field value between two positive charges along the line joini 0wv hv : z3uor8cbjo+e(91bztng the two charges?

  Electric field lines near psitive point c/ mxa, )wgk8el.ho0u9gd a3 ijharges

  The electric field shown :9cf(hcv/pfk/ nmm) k

  Can electric field lines 5a3v; bjowr oqa o*((tintersect in free space?

  A solid block of metal inr 1w2ncx9b8k r electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thew9xnc21k8 rrb block's interior.

  If a solid metal sphere and a hollow metal sphere ofv,1* -j5jcdtr8awlfu equal diameters are each given the same charge, the electric field (E) midway between the cent *jfuw,c-drt18j 5v laer and the surface is

  A cubic block of aluminum rests on a wooden table in aj*/t vwqhde1e)u0(,hq/5q y.)fd vl r f ji-gr region where a uniform electric field is dirq)gq f,e5q0 -y (th1i.*r)ujfr/vdehjlv w /dected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c+jnt3-i z1te;nv;vn ja7y5t vharge

  A positive point charge is enclosed in a hollow metallic sphere that is )gl 1/ws/q df7rb)rvj67rl u agrounded. As compared to the case without the hollow sph1rab)f/77qgjs)l 6u l/ rdwrv ere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in st 0swnu*a3pqati9*b wu, e* c:katic equilibrium.

State Gauss's law.

  The charge carried by one elc 69xrmo fat*;ectron 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 ozt +r56o9 yuvtuxg(i )f +2.00 mC. How many more protons than electrons does this piece of pluot) tg5v y9+6iru(xzastic have?

  What is the charge on 1 kg of prot9hz fzs::q5 )a c;ttwlons?

  An atomic nucleus has a charge jo4ir1/ih z+k of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.o bn5oc)s- (h8qxvcx /5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themo(hno)qx cb-5/cs x8v ?

  A 1.0-C charge is 15 m from a second c(c -l 8ylp60lz,4t. 1wyj bl -veesj(jtalan9harge, and the force between them is 1.0 N. What is the magnb l 0 89lte at-v-s.je (w1(azylncjjl,6 ply4itude of the second charge?

  Two 1.0-C charges have awob/njo*r,db b*o b39e 8iqj; force between them of 1.0 N. How far apart are they?

  The force between a e:es(a 6(xvlosf68xk*swp2 ho q-v : l$30 \; mC$ 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 knz5x*e2 *vcn force. If they are moved to a new separation of 8.0 cm, what is the ev*nn5 z*cke 2xlectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cekfp,x 7 b;u2y35jv txharge 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 a ,x5py 3bef;tu2xk v7jnd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are si 15-utw q(si/mtzn 9placed on the 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 ofz in 9/ wt(q5sutim1-s the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the ftpjev15 ;if su 7.wkv:ollowing positions: Q1 = 2.00 mC at x = 1.00 mtu:p7.1ie ; w vfjksv5; Q2 = 3.00 mC at 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 second point chs :d q7syb35wlo,li 6darge of -Q is placed at the u: s6q ds,3lo yd5lwib7pper-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 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 i.bwdii4v9 fs61s hj kfo3;e5v s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.v6is 4 owe.f51;3jhvs kibfd90 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 nC if7po rsnzo*aatrk+9, / vq -oi/ff18 ts at (0, 0). W ,arp7sft1 v+ftraz8//9fqoi -n oo*khat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ++q/d;c, twg4gj yp,k3ay( h (fpvhszvertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force d3q h ,yp4hfs+ t(;k /+pz,c jw(ygagvwhich acts on any one of the charges?

  Consider point charges of ce3g4a+-). rxz l3t7 2tjba*jqt zz kz+Q and +4Q, which 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 actingzkzr7etj- .zg*+ tzqaax3c)jlt32 4 b on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charh5c gwy/ :9-uolwmz-hge is at x = 4.0 m. Where on the x-axis can ah5l -hw9-gm ywc o:/zu third charge be placed so the net force on it is zero?

  Charge +2q is placed x ,lek j7-(nolat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zee,(kl o7xl-nj ro?

  A copper penny has a mass of 3.0 g. A tod 0o s3pd3 xxcu)8,ygetal 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 4-oar fdh.j- vthe attraction of a fixed proton some distance above it. How far above the electron isd-a-h.f4ojv r the proton?

  Two 0.20-g metal spheres are hung from a common point by nouy*m;j: l5x o*pg;kibnconducting threads which are 30 cm long. Both are given identical charges, and the electrost;* ioy5kb :p;*u glxjmatic 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 electowj jsc 5nqzn7+3( v 8h lo(u-ohfyi,5ric fsnhz ci hluo3 fwj (8,vo575j-y oqn+(ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the e uj gzp6-:y.0-ee pjfllectric field at a distance of 1.50 m . fe-y6juljp:0pezg- from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. j+bnf n 4ch-fuw: n,g5What is the magnitude of the electric w+4uf,fnnh j- ngc:b 5field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction yn5 q:dg-9o jpof the electri9j:yg 5 npqd-oc field?

  A 5.0-C charge is 10 m from a small test charge. What is t*ta8(wair5 ,si f uw7ghe magnitude of the force experienced by a 1.0 nC charge placed at the location of the test i,a gfau s*w tw7ir(58charge?

  Two point charges each have a value of 3.0 C and are separated by a dis -79ligvdm ;rxrm-ic8 u7q9)xn mqlc.i:;hsy tance of 4.0 m. What is the electric field7im cr;h vcn-mid;mr xsi8l:9lu9q7.xy)- gq at a point midway between the two charges?

  A 5.0-mC charge is pl+z5t5h6r/c ,p5ar dy maw4qsqaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the r,4/q6mz5phtr+ 5 w aydscqa530 cm mark?

  A 5.0-mC charge is pfbdoa 9i00e 5imzmj8*,qa+ xdlaced 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 charges aqebjf+,mo8 d9 z0di*amix05 is the electric field zero?

  Two point charges of +3.0 mC and 9aa ;ghl6q+skbo 5he* -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of thes9 hhbeg;5qoaal*+k6 electric field at the point midway between them?

  Three 3.0 mC charges are at the th5h2j21g+zc lpcj x*;qh lq2vfree 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 center of th;gvh+zl xcpj *2h cqfjq 15l22e square.

  Consider a square which is 1.0 m on a side. Charges are placed at thl*78vyc8ru .yrvbyxgo 8sy 7 5e corners of the squa7c8l *gvy.xb8oy yrs7r5v8uy re 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 field at the square's center?

  A force of 10 N acts on a charge of 5.5plfmh3/+ uxatmq 6hvmk +7r10 mC when it is placed in a uniform electric field. What is the magnitudmhl +1auk+5q7 t/ 6rpv3xm fhme of this electric field?

  A particle with a charge of 4.0 mC has ap mjxbibp* h6zx b5((y*/y fkarc91+z 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 fieloo+kdbd w.ab1kb 08l02 zly5 od of 6000 N/C pointing downw lk0.ao+ok 5bdw1y0bld8 zo2bard. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g sln15fh eabg 33qz:;oai. 1 hncarries a charge of -2.00 nC. The ball is placed insidsba ne1q;5 l.ozghai nh3 3f:1e a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charged sr :0 ,;eq nwi+whn5ka/qp7i of +2.0 mC. What is the magnitude of the electric field 5.0 cm from t:a5w rkp;i/isn07 +qh d,qenwhe sphere's surface?

  A metal sphere of radius 2.0 cm carrguai 3w7 d5wv1a7ri t1ies a charge of 3.0 mC. What is the electric fivra7w7wug115d3ait ield 6.0 cm from the center of the sphere?