State the law of conservation of e2: t *cb szx:p10wr r2vcqs4hilectric charge.

  Is it possible for two negative charges to attract each om8kzkd km;69o0 5taid ther?

  Is it possible for a positive and a negatd7b:dt 5aw6naive charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duri l7y8( xd)skikjj 13zq6sw3 zzng the process the glass rod acquires a pos(7zk6j8zd 1is qyl jx)3wz s3kitive charge and the silk

  A proton carries a

  The model of the atom shyf 9anpxg8obi)3g b0zd ce7(eh n-(8aows a

  A neutral atom always a / iju;5r4v0,nvcy9rq:yths has

  An atom has more electrwo2pci*m ,* h1kdz 0b 0ko6ru ,w9sfnkons than protons. The atom is

  Materials in which the elec3zs44aggp 1kn trons are bound very tightly to the nuclei are referrg31kn44 gs pzaed to as

  Materials in which the electrons are bound very loosely to the nuclei yvo)2lejfr+,and can move about freely within th),lj+y fevo r2e material are referred to as

  A negatively charged rod is brought near one end4 sgbqjaybc. z s01u1mzb91l ; of an uncharged metal bar. The end of the metal bar farthest from the charged zjb1q1 0lu ay 41gsm9.cbz;bs rod will be charged

  Sphere A carries a net po3f44 *ieev-fh0:lpid rr r)0l 8gtwtpsitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that isrgl-rdrw4 0 htle p8ie pv0ft :f3*)i4 grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivd8n agst wsl3ia/9c8 3ely?

  An originally neutral electroscope is briefly touched with a positively ch zin+)mrswz4l68 ir l;uj*xm,arged glai;wz4zj,n8+ ul* xms6)mlirr ss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively7 oxf h+e2+qhx charged glass rod is held near it. After the glass rod is removed, the electroscqo+2hx e7f hx+ope

  A positive object touches a neutral electroscope, and the leaves separate. Then/8edo3 do3 f3)otku w lz/dq11bugu-x a negative object is brought near the electroscope, but does no1 8zot3dlwf-1/dex3uquoogdu)k /3 bt touch it. What happens to the leaves?

  A large negatively charged object is placed on an s0qfj9 qlc*4k 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 objj qsfq4kc l9*0ect. What is the final charge on each ball?

  Charge is

  What are the units of th vn z;rg nmcc:8:cjuc2oxzp )uk*0+e, e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separd 7.rtexqzgkird:;7 7s4ept3ated by a distance d. The first charge is larger in magnitude than the second chaxqpr z3st: 4e7dki.r7tgde7;rge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearif hnjw*wemkn* 2 i16. each other on an insulated table. Which sti*fwj kwi12h6e* m.n natement best describes the electrostatic force between them?

  Two charged objects attract each other with a certl.bdi 1i ;dr740z:x cae gkg0main force. If the charges on both objects are doubled with no change in separation, the force 1 ik7c:bgda0ez.0 ldgi4rx m;between them

  Two charges are separ/ rzug5 kw*w 1+.luoyde ue.7gated by 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 new mutual for*.e+d ul ery 71.uzuw5ko/ggwces?

  Two charged objects attract each other with a force F. Whag 54;ph1cujt;s m6wg3 e(6 ird(qigrjt 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 value? The force is now equal gg dw6s (jjr6ii;3mcqp4(hug 5;1er t to

  An electron and a proton are separated by a distance of 1.0 m. Whahhj i6;t9z4 fxt happens to the magnitude of the force on the proton if a second electron is placed next to the first electr4;6fh h9jtiz xon?

  An electron and a proton are separated by a distance of 1.0 m. What happensj8jfh0864kd x e9uala to the magnitude of the force on the first electron if a s ujdekj0l69a8ah 8 xf4econd electron is placed next to the proton?

  An electron and a proton are separated by a distanc-wt56 t5r 9)eda,gk;iok ch )g.xsy wje of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closc ,jew 9.it)6aydsr xg;g5tw)k5-koh er to the proton?

  A point charge of +Q is placed at the center of a squaio,fa3h n z)0a:no(ebre. 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 magnitude of the net electra0:b nho,ezi(a3o)n fostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at th9n1:5 uvzh lyc,dmf zxj7(t8de centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, anz 9(cu: v7tn5hf l,ymd1j8dzx 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 eq t8y;ws5e (x99rx3spd q/gc not a vector?

  At twice the distance from a point charge, the strength of trj12i:8gtrl ;w ;sqtq9 .xunuz1lk p7fro+ g,he electric field

  Is it possible to have a zero electric field value between a negax kft lo/o3(f9 0lhtfa5f vk,6 :chzz2tive and positive charge along the line joininz6xhol/lt9 2fzv, ckkf3 (aot0f 5hf: g the two charges?

  Is it possible to have a zero electric fitbe,d9dz: 7yf w, jkw-nb2i7 yeld value between two positive charges alo:-w7eyn, d jwk27ztbd 9f,ibyng the line joining the two charges?

  Electric field lines njmp3a6rt gd 7rt2n f)nq(zk(boal 4((ear psitive point charges

  The electric field showntz 0knqh27t :1khckh :

  Can electric field lines intersect in 4g0:lyl 5cqtqo7 sqr1 free space?

  A solid block of metal in electrostatic equilibrium is placed iq/wdf,5w 1,ovj1 ymcx. oavqb*1h r,m a po,b0n a uniform electric field. Give a statement concerning the electric fi1wa*oo,j1 ,1x.cvoymrqb fhbpw0,a 5 md/ , vqeld in the block's interior.

  If a solid metal sphere and a hollow t1mqh01bi cf9 metal sphere of equal diameters are each given the same charh09fb 1c1mt qige, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table o: evxsq.l;8d3*fd+zjo cx/fin a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface?8xsl /ed c3dv;*fx:z .o qojf+

  If a conductor is in electrostatic eqn8zp9 (-vidc kuilibrium near an electric charge

  A positive point charge is enclosg/3 * mo l2l7qjdg83vq sp;itged in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the e3pg;oq 3gj*/mqi l8 gsv27dtllectric field at a point directly above the hollow sphere has

State three properties of condu:hzxq-6zg5xzy:z0j vpgbv4 xa-) j8kctors in static equilibrium.

State Gauss's law.

  The charge carried by one electro2cnpxo39bfz kn13- ij8b -txl n 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 tha h+7txc9d8u9 6htif4uv p j1vb*sxo* hn electrons doe*vtxv8h 19+puxu4d 67 jic*9sfh obhts this piece of plastic have?

  What is the charge on 1 kg of protonsonz p ;zkye2g594- 9/vn3 sg-chuhtez ?

  An atomic nucleus has 2vt,( krwi8rva charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5y2iyjd.;6ct3ke ) kjr cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of t;3 ci k)ry6 ej2.yjdtkhe electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force ;5yuv i(x7ixgsy o8 v(between them is 1.0 N. What is the magnitude oi;(xyy v 58g7vxui(osf the second charge?

  Two 1.0-C charges have a force between them of 1.0 3 3o:brr p sr+-1x;ne:rivf ru/*zfych m0h5mN. How far apart are they?

  The force between a u4/hsel5kf8dg/ d :ir $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience 54e26stjfq j ya 1.0-N force. If they are moved to a new separatiotq5f j4s 2je6yn of 8.0 cm, what is the electric force between them?

  Three identical point e j;;c6a4g (ejc .;r/ud wngoccharges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100o;; e6c(gc.cneajjr/u d wg4; cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placedye 3y p9p08hxwohs53g 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 e3o0h53 pyxwgp98y shmark. 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 follo v1pyr81b i)fuwing positions: 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 magnitude of the force on the 3.00-mC chb1r fu)yi8pv 1arge?

  A point charge of +Q is placed at the center of a squa.n)g0pv s (pkcre, 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 th.spg(c n)v 0pke 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 at (0, 0.10 m); m dvk5z1y;3jf8 vft i5Q3 = 5.0 nC is at (0, 0). W kz j5tmy5 f;f1d8vi3vhat is 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 nC is at (0, 0.10 m); Qela))emzzr6 j13 w an03 = 5.0 nC is at (0, 0). What is the directine30er1)z6l)zm a jawon of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver 7pfdxwfw i-:/tices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any ofxid f -/ww7:pne of the charges?

  Consider point charges of +Q and +4Q, which are separated by o:a .cse,c,ca3.0 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 zeroe ccs,,c ao.:a?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on pb 1tue-vj 9b)the x-axis can a third charge be plbu9)jbe1 vt-paced so the net force on it is zero?

  Charge +2q is placed at the or 4lp+tscvl h (a9n,7hgigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the forcs(nhl lvp4g7ch 9,+tae on it is zero?

  A copper penny has a mass,6taj h(hewh 7 of 3.0 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 gravityl75/a tus /s pvq5x6xw ks/m6a by the attraction of a fixed proton some distance above it. How far above tauml55avp/tks7 w 6q 6/xs/sx he electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadi,aqdpqog2- 7 o x8 5irp)/0/ tffyyies which are 30 cm long. Both are given ide8y toxq peiiqri g/poyfd)5 ,-f0a7 /2ntical 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 magm, vee-f4(gcg j8z7o lx,px0w r 4lu+ynitude of the electric fxwf+ pl gc zu8go(e0x,my4l,7 v-e4r jield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a d 31(s :bcqq;ousi9iq distance of 1.50 m from a 50.0-nC chd bo1q:si c3;(sui9qqarge?

  A 5.0-C charge is 10 m from a small tequ47rn; q0 +g2y uao, +wlfnwtst charge. What is the magnitude of the electric field at the location of the tl+ to7wr2wgq0un; na4u +y f,qest charge?

  A 5.0-C charge is 10 m fromc+mh im16nmi+wdr-2 l a small test charge. What is the direction of the em6 i1nmh-drciwl2 +m+lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu+2dr9 p+ *erbhv kxz/ode of the force experienced by a 1.0 nC charge placed at the location 2h+e*zx/kb9 r +r dovpof the test charge?

  Two point charges each have a value c 5is7uy 2(u4d ;i5jyr(qwzdcof 3.0 C and are separated by a distance of 4.0 m. What is the ely;cd u (icd yzr 7i4q25s(wju5ectric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick9k.yn i uf3j(xv1 zd9h and a -4.0 mC charge is placed at the 50 cm mark. What is the electriki9(n13xv udyfz 9 j.hc field at the 30 cm mark?

  A 5.0-mC charge is plae :oawj, 2yob b2vc ,lpe3:fd:ced 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 is the electric fio:a:eb22b, w ecl3o:,f djvp yeld zero?

  Two point charges of +3.0 mC and -7.0 1mywj0m021x a7ipcln mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field 2 1lpm0a1ncyi70 m xjwat the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50t ,ig -;rjg8pjf0:r fq m. The lasttrj;j,:g qpr0ig8-f f corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners/s(bja/-zf creaho/ 3 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). Whatboc -rfaah/e(s/3jz / is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform g6gc(y2 e;e6 kib2z xnelectric fielnxce;b 22kg(6ey6zg id. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mk n x2s:ql3x(hC 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 electrx/yw+m2 b g*qpic field of 6000 N/C pointi+*xpm/wqy2 b gng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrit ui5l 49k4gpketjwell96dhr5s +o/ 5es a charge of -2.00 nC. The ball is placed inside a unifougr 94wtedph9lkj6/l 545s e5+ ktli orm 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 charge of +2.0 mC. What is x ajc7(3r fu6va.u4d5k hfw0 zthe magnitude of the electric field 5.0 cm from the sphere's surfacc3aj(74 uxvzwk drufh6 0af.5e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tgws5dlfq* n j(u t))h*he electric field 6.0 dnth)s5*w*g(f)lu j q cm from the center of the sphere?