State the law of conservation of electric chah :golrvi71+h42 tzegrge.

  Is it possible for two neg 8 6f3vvdq *txx8r3o of74apakative charges to attract each other?

  Is it possible for a positive and f;zx) rnkai 583dv- r8g)js jla negative charge to attract each other?

  A glass rod is rubbed wi3mzo:q ,v1ui*5 k4w puf0mxb vth a piece of silk. During the process the glass rod acquires a positive charge abpixu03wkz qv v4, : fm15um*ond the silk

  A proton carries a

  The model of the atom showj f).z 2;4gtfhurl d-ohr- vy9s a

  A neutral atom always ue7 -o1vah /szhas

  An atom has more electrons than protons.d a oquon09i4xyqg*) 1 The atom is

  Materials in which the electrons are bound voy - ):)6g,duw2gz,gljrmgpkery tightly to the nuclei are referred g-2,rgpgwkz o,lm): gjdy6)u to as

  Materials in which the electrons are bound very loosely to th1+(sjo)eglszi/h i d(akk38ue nuclei and can move about freely within the materi +i1i)dk 3j(s(zsk/elghu8oa al are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar.n+u*a7rm+id gg + z)bd The end of the md+7agz+ugi+* ) rmbn detal bar farthest from the charged rod will be charged

  Sphere A carries a net positive f66jfmoyi,9rk 4qo p bq,2z3kps 5s7ycharge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is coiro5fkq y, 9bk2msj3sqp 6pz6 o4 yf7,rrect?

  How can a negatively udcki 3/m (. +zh c;foun5)kyfcharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pos cn(7tr; s ::xhfvkja9itively charged glk( 9jta;rc:xs7 fn:vhass rod. The electroscope

  An originally neutral electroscope is grouwyr6w ;0x2 meq9my9vm nded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrm2y ww x0rmvy6eqm99 ;oscope

  A positive object touches a neutral electroscope, and the lea zfhtb2v7n7k*isi+3i yb gj1 5ves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens372kif ibt5 g*z hbnivy+sj 17 to the leaves?

  A large negatively charggu.0vb/jd2p c: e 7v-t al)j4wqcukl2ed object is placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops befw72tc4bd:k.2c )qva- l u0 e jgpjlv/uore 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 final charge on each ball?

  Charge is

  What are the units of the Coulomb connk1t0 on 9v(nv**xm cmstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The:hq.edpx uz3r; (ubx56fi g( c first charge is larger in magnghq u(:d3 uc(izr6x.5e; p xfbitude than the second charge.

  Sphere A carries a net p; +oe+h*9.tio ldp6xzif* ipcharge and sphere B is neutral. They are placed near each other on an insulated table.;9i p*+*poz op+ih . etd6xifl Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If k )8g h4a-tgddwc :i1vthe charges on both objects are doubled with no change inkgg ah dtiw)1-:cv d48 separation, the force between them

  Two charges are separ3v0h0tz n h u2*ocf.aqated by a distance d and exert mutual attractive forces of F on each oz2qt f*vu00a h3n.ch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with vh c ,+eqi-wzfk: e.gpb :-v6:(riamv 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 value?bgr::vzqf+i kevceh.m,-w i:-( ap 6v The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. : 9xndzuhb::l .jdu0 tWhat happens to the magnitude of the force nh9 ::jz u0b .xulddt:on the proton if a second electron is placed next to the first electron?

  An electron and a proton are ajm y ulcj+r*axf5: 8-separated by a distance of 1.0 m. What happens to the magnitude of the forracf u+a*x y5 lmjj-:8ce 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. W 9zo 66p1 v h6 3kcphd1fult-;piltj1mhat happens to the size of the force on the proton if t9opt6t 1 c; mful vkzihlj16p-316 dhphe electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When axb3jr; ts+) bj9abdm; second point charge of -Q is placed aratj d93xbmsjb+;b);t 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 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. w o :2dornzu7/When a second charge of +Q is placed at one of the triangle's vertic2z:d 7ou norw/es, 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 followingf3ie r6siaelc bctq 3,r34 /9c is not a vector?

  At twice the distance from a point charge, the9z:c9 :kq.e(kxaynsuq-wkd+ 1 usz d0 strength of the electric field

  Is it possible to have a zero electric field value betweztw. rrbbe0 3k9-hgzp ;q +e5;o1ud/,ugnhvden a negative and positive charge along the line joining the two rnbut3 9k,hbvde +org/;1z0u5. d-gzhwp ;eqcharges?

  Is it possible to have a zero electric fiel)uqd :feg5j: kd value between two positive charges along the line joining the two c qjkd uf5:)e:gharges?

  Electric field lines near pwgj3lm ud9 wyxs0 )j*9scy/o)j;x ;nisitive point charges

  The electric field s7c9en(gf0i4 o1 wvwvthown

  Can electric field lines intersect ihonr78l cv)jk zq4bu0b 2*ho3n free space?

  A solid block of metal in electrostaterrc3gi/9ziqo i /hs.i.h(v 6h k5k :il7agh2ic equilibrium is placed in a uniform electric f7z kr..ra6// s( iq5ihihi :oev3hg i9 hclk2gield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametjy:m+ dti)z1 yr;)jxmg* )qb zers are each given the same charge, the electric fieldqjyzx r) : i)g)jy;1z+ tmdb*m (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regi*- l+7 hdghn*/omatoion where a uniform electric field is directed straight upward. What can be said concerninhho+ d 7a*o/l i-tgn*mg the charge on the block's top surface?

  If a conductor is in electrostatic equig2wugpgv , 4:jlibrium near an electric charge

  A positive point charge is enclo ) 3vmeztvah9)sed in a hollow metallic sphere that is grounded. As compared to the case without the hoe avm3th9v)z)llow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducto hr.xhox28w5t g1fx c/ 7 lta/kh,8barrs in static equilibrium.

State Gauss's law.

  The charge carried by one 9t -;y13 gjiloq244yu bef dydhw,0meelectron 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 protsoz 3nro* z:j/ons than electz*3on j :/rzosrons does this piece of plastic have?

  What is the charge on 1 kg of prka5c/v95t::ffgf 8e q ykn+y cotons?

  An atomic nucleus has a charge k.e + o.)exf.ecm m-ckd wa-z*of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatx/4 of q1eqm8j2fp/3l9lg wmoed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themjf/w 9g8 2xqfoq mmle1po/34l ?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1d9n),nqr+ * x:vvka qg.0 N. What is the m*v:, kqavg)nx q9rd+nagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arexv( h*0lzywfd o rb)xf6b24o8az6do 5/sds 7a they?

  The force between a vy7 j+i+z uzj,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially ty7l v0-(fv aujsx 73g2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between t-g7 ult(vva7yf3 sj x0hem?

  Three identical point charges of 2.0 mC a:c *9y5, onc)zpksb 5mumdw*a re 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 100 cm mark. What are the magn,9nb:p)d w mokym5c scza*5u *itude 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 ofb;rh d*+zjwj3 :cc ( vn15amt)lpqb a qso.:)j +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 *hvqnt 3zcmjjbwcjbqrl) .; o:1s+:p(a5a )dcm 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 fhjdkhl0bhdw(vj a36-75hn g* ollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC a56hv7b -kjh3hlgj 0h*ad wdn( t 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 cu3 am,u t9)b bx+87t7sr ) bbrobe.bbkenter 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 magnitude ouk8) 3mb+e tboub t xr s797ba).b,bbrf 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); job; mb;4 h4xuy4*bd 9:ndc wkQ3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thhu; b 4xcd4onjd9 *k4w;yb :mbe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = n rjahv07a317-)a1askddi ny -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction 7 0a1 a-1a73vdydhnksrnaji) of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilato gv7l 7bmub:o.p3vo7eral triangle whichoo :3 vbgumo7 77pb.vl measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha)i k2i1;pwszo ;ial-lt 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 zei- k;sl)iaiwo1 2 p;lzro?

  A +3.0-C charge is at the origin and a +9.0-C charge is at (lr1i(huah(v-wp3 patt4un hcag8s w;c 70( xx = 4.0 m. Where on the x-axis can a third charge be placed c 8ug4hv p wc0(r a ns7atx( -;hpa(lu3w1i(htso the net force on it is zero?

  Charge +2q is placed at the origici;g.jk0 twqc p +g,3qn and charge -q is placed at x = 2a. Where can a third positive charge +q beg gkqitw p,q;c3j+ 0c. placed so that the force on it is zero?

  A copper penny has a masy(*d9y v,j+l :z4vhpiv7yeaj s 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 against2scs kgp)*3) 8 bnmphm the force of gravity by the attraction of a fixed proton some distance above it. How far abovebp )mg82np*msk3 hs) c the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by 3xhdna;qay6xyl3 ls6r 9by4dkor ;/b -c/ j d-nonconducting threads which are 30 cm long. Both are gi3x/c6ay 9bqhdr4 ydld6yb;so ;/-xr- j 3n klaven 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 kk*flb y,am+;the magnitude of the electric field at ay kk*lm;+b,fa distance of 1.0 m from the nucleus?

  What are the magnitude and directio6 q9dg npv8qhpl84ypx8b , h.pn of the electric field at a distance of 1.50 m from a 50.0py48 qb6 pl, .hx8gppqd8hn9v-nC charge?

  A 5.0-C charge is 10 m ;jbx - pf7 edmp,q)x/.fubud.from a small test charge. What is the magnitude of the electric field mbqd,)dpfb-xu x.7f. u /epj; at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wh(j tcr6fp6 x3xat is the direction of the electric fie (rpx cfx36tj6ld?

  A 5.0-C charge is 10 m from a small tese:a0 8ih5dwabq id9.p t charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the teip9ihdab:w 8.d e5q 0ast charge?

  Two point charges each df*yt:clebp.l39 8 2k(asw p chave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at y3w9lk:acp (t2 8bsdf.c p *ela point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark o;tq*o qkpu 0h2g0m; wr w172f4 lxfnqof a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cq4no g mfxfk; q1t7w*h2u2rw 0;qo0plm mark?

  A 5.0-mC charge is placed at the 0 cm mghk:a*l:ej;2 thy; n.5gcgiqark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a liag:*ejq h2g;; ckn:glhit y.5ne joining the two charges is the electric field zero?

  Two point charges of +3.0j j11qucxg) p9 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magni1qxj9 1c u)gjptude of the electric field at the point midway between them?

  Three 3.0 mC charges are at them t*99qjpsx0b three corners of a square of side 0.50 m. The la9jx0b9 st *mpqst 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 tnpkse415*q.k5o 8fg goha05trf(g rqhe corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at ek r85t hkr(gaq4ggs*o 5qof1f.5n0p(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: 9uzihposxej dh21j(9 hi6j 3 charge of 5.0 mC when it is placed in a uniform electric field. What is tu 3ejdii9z 2xj(jhhh :p91o 6she magnitude of this electric field?

  A particle with a charge of 4.0 mC ha qq)a9;kmirx:h 8g3ezs 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 elec l4x84z 9l+y l)mzf73u 1+vfpsuccq nstric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be sus 1vzzp7ls+y3c su4n9 l 4fl8cf+qu)xmpended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball i4t 7fwq+ -ctx c7)sev;-eijht1sxeu4s placed inside u+-17scwte7eqftc is j )h -exv4;tx4a 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 iwxr) bf aaxd3*ha36: 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f)f dhxra 33axb* i6w:arom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge o)uxgwzg.t8a 1z c2s 1k5 pvhp*f 3.0 mC. What is the electric field 6u2*ckxap1z pw5 tsz)vh8g1 g..0 cm from the center of the sphere?