State the law of conservation of electric chx , 1 afb9dzxrs9(7t ulmk1.soarge.

  Is it possible for two negative charges to attract each ovo3d07nck:h pther?

  Is it possible for a positivzg.(b2wk yd)ve and a negative charge to attract each other?

  A glass rod is rubbed with a piec j taj-:/a6knze of silk. During the process the glass rod acquires a positive char:z6a/ a tj-nkjge and the silk

  A proton carries a

  The model of the atom shows auvhjq6cxwhf 54 :j(ml ,eni q)8ft+8y

  A neutral atom alwayscee uz :65j1yrd-m.nld -ns b2 has

  An atom has more electrons thanw4ybq( kmh/fo; pl8 -y protons. The atom is

  Materials in which the electrons are bound very tightly to the 7jscaaiti5z/ve9 8g 6 nuclei are referred8t zag6 ace9vi/ i5j7s to as

  Materials in which the electrons are bound very9pu t5 -h)sqbqivq3 w()yy1ty loosely to the nuclei and can move about freely within yp vhitq-(wy5)ut 31 qbq)s9ythe material are referred to as

  A negatively charged rod is brought near one end of an uncharged metaem2/ju hrg22lac) .ge- x gh) u2hi,ral bar. The end of the metal bar farthest freu-gah m)rhhxga/,.er jg 22u2 lc)i2om the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Tydcj.5 w5 x/ifq(k1mhhey are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is gr (fq d.whjcmx515/yk iounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positf k d;bc ,n ijx)rjg5h:7r)ka7ively?

  An originally neutral electroscope is brie-yl/xks7 ra6qfly touched with a positively charged g l6a/-ykxrq 7slass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positi shmdxyt-;l/x 9mq59kvely charged glass rod ixtdm hl -9;ksy/m5qx9s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electronfh.*r )z.:rq bdl+pqscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touqdnp:qb .rhl +*r)f z.ch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated 4va kt2tj l)lk v,g.+xddy,.wtable. 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 final charge on eakytgdaxtv4klw.j,ld +. 2v ,)ch ball?

  Charge is

  What are the units of tkhq y ,.-3 ihjv(faat5he Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Tf ffe2:)tz( xahe first charge is larger in magn:z2a) ex f(tffitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nia7(f2p/xb + j o+5zw rc9idvvear each other on an insu v+ dwzp x+i2i/o9r7v(jac fb5lated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eactygft voi3.7e z2 us:gnkd*(rgcshy;8 1m)f5h other with a certain force. If the charges on both objects are doubled with no change in separation, the forceo y3mtn8fgu*cg(7 e2yzv) :dks h1.t5sr;fgi between them

  Two charges are separated by a distance d and exert ms1p 69 ygcuz ;nxsgir (sd1,u3utual attractive forces of F s zpgixgrs1 d1s ncyuu36; (9,on each 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 a force F. What i4hw wp e+l/l6happens to the force between them if one charge is doubled, the other charge is tripled, and the separation dist/hlpwi + e46lwance 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 of 1.0 m. What happens to hdg d2- **ww76h-who fvw euxnv3./wuthe magnitude of the force on t 6hnv/xwfeo huu-d3w2*hw7wvw . -d*g he proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dista r 2f+k7pj70:gbopyrknce of 1.0 m. What happens to the magnitude of the force on the first electron if a secon jkfb: 7g+2y7opkp0r rd electron is placed next to the proton?

  An electron and a proton are separated by a 6sg7-zpb tm 8vj *(u*.jozmh u7lyni 3distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 uo*3pl8 (jvi*znbm .j7tmy 6-z s hg7um closer to the proton?

  A point charge of +Q is placedmq5 ,w8,5tvrj3 e,hewsl ,f uc at the center of a square. When a second point charge of -Q if,8tl,vc jwer5u m hsq,3 5w,es 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of at :p0sp2 ym4tln 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 yp: 4t 02pltmsis 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 n(iuff, ; k/1prdn/jrrot a vector?

  At twice the distance from a o/ynfmox8(,- par.f uxvc,*tpoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negk1*+pp2xv3mrftbdgpa .o05 hative and positive charge along the line joining the two charb *vkt 53fx1do. rhp0a p+p2mgges?

  Is it possible to have a zerozalv) ;hobsm(r)vl,p xn h4/, electric field value between two positive charges along the line joining ths)l)4m,z l /,o(n xp;vharbhve two charges?

  Electric field lines near psitive mi whexbd4(w kl2l1 e g+ z+0aj/sr7v.point charges

  The electric field shown 7+q x 1zd vy)nxkan/fo( 2mq/a

  Can electric field lines interselr 2 2uf 5lyfpxlfa* ddhzip m;-;,)kz4z-jb3ct in free space?

  A solid block of metal in electrostatic equ+ta7bg,2fix,i ej f/milibrium is placed in a uniform electric field. Give a statement concerning the elec7i ie2fm/,g,b +fxja ttric field in the block's interior.

  If a solid metal sphd:7 qzp95 xsctere and a hollow metal sphere of equal diameters are each given ttz75d:cps9qx he same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo9vpc*/;h ;(z(i kvfaf9ki w emoden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charg9;pekc*(mw( ik a/ zf ivh9vf;e on the block's top surface?

  If a conductor is in electrostatic eqld1o .okcle54 zvoc) p*c,t,cuilibrium near an electric charge

  A positive point charge is enclosed in a hol (xvpox9c a1-mlow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above ta 1vm9cx(o px-he hollow sphere has

State three properties ot-rfl p6 +ei3tf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron i4xl ghra+ m,-qs $e = -1.6 \times 10^{-19} \; C$. 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 than 1wcbs;z)fcer3(nj am74/t rsele7tc/;(fnrmzwj 4a3b 1 r)se scctrons does this piece of plastic have?

  What is the charge on 1 kg ofz)*n+j-ee1 6t gr qcgt protons?

  An atomic nucleus has a .5ekzlqrj* s eg k.7g)charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep7b1qt pa f/vo t1ed1x5arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electrivott57b f1deap1q 1x/c force between them?

  A 1.0-C charge is 15 m from a secbk sx ,c)mm 5mt3qu3txfu: v79ond charge, and the force between them is 1.0 N. What is the magnitude of the second 5tv km3u:x)qts f39xu7bmm c,charge?

  Two 1.0-C charges have a force betwd3 yfo(f iay1vyp4+)sl(zot5een them of 1.0 N. How far apart are they?

  The force between a :tavad2d0e g(3 cz9k 0bzkk:g $30 \; mC$ 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 force. If they asz ix. i.kb),zq n 4ejgv6y(/xre moved to a new sepiqby6(e4.,zg z v n).xik sjx/aration of 8.0 cm, what is the electric force between them?

  Three identical point charges o34al;*s fztojf 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 100 cm mark. What are the magnitude and direjsz 3loa4t *f;ction 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.:2hxdh5rt wyyr qv- ) gb(2+da0 mC is placed at the origin, -2.0 m C to the right at x = 50 t dhygr:2h-5w rq)xd(v2ya+bcm, and +4.0 mC 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 locatf+ ;2vph+onrted at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1r;+ +npf2ovth .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:: mzmy o 5kr ;qxc 4crh4kb:93fvdn/q 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 of the 4hd:rymk5:q :kc3; 9 nfmq obcv4z/xrforce 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);*jq2r ty1di(m Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magn2d *mtqryi (j1itude 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); Q3 = 5to23t(srl2 y h.0 nC is at (0, 0). What is the directior ( 2htylst23on of the net force on the 5.0 nC charge?

  Three identical charges+4v 20tjfh3 a1us lgscz*7yaa of 3.0 mC are placed at the vertices of an equilateral triangle whichz73sjt c0 aa+*l syug24ahvf1 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 sepwlo9a5:m qr ,abq5x z*h4)z tf0lg1akarated by 3.0 m. At what point, on a line bz9rz *ftxa :wm4l)l1hq bqag5o a05,ketween the two charges, would it be possible 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 charge is at xvu bs:;,5: xlvto 9iog = 4.0 m. Where on the x-axis can a thilib9vtvs ,oxgou:: 5; rd charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed atk7 * wap+8f gemn6u6kb x = 2a. Where can a third positive charge +q be placed so that the fop 6b*6kfun+mg 8ak7ew rce on it is zero?

  A copper penny has a mass y ath5nn8- q*)pg2q0sb i8yx uof 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 gravity by2pps4mghhgd xl 9:(0g the attraction of a fixed proton some distance above it. How far above thm:gd094h2px( gshlg pe electron is the proton?

  Two 0.20-g metal spheres are hung bu njv1*x+bn72z5 rsifrom a common point by nonconducting threads which are 30 cm long. Both are given idebrun7+ijx1z *v b2n 5sntical 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. Whamejamw0w7c( ml ef -4 ,qx2f;fkq92yit is the magnitude of the electric field at a distance of 1.0 m from the nuclqwm0(i 29ff,em-27ajcqw4 l; yxem k feus?

  What are the magnitude and direction of the electric field a:ws2rvbo76 rd/9rm ;xszdkz7t a distance of 1.50 m from a 50.0-nCr6 :ms27d zkwx; d/7zrosvrb9 charge?

  A 5.0-C charge is 10 m from ,e9 cuhn *o1:noz jk24y;n plea small test charge. What is the magnitude of the electric field zholny* pee;kno 24:1 jn9,c uat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. edw :,5+jrlkvWhat is the direction of the electriclv:e rdjk5+ ,w field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ov: d)/vmhi p7ghnz15/ +zsrjrf the force ei:)v z phnz/5jrmr gv7/d1h +sxperienced by a 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 by a distance of cs 6b5r)izbrv2y4cs2+ u o) py4.0 m. What is the electric field at a point midway between the tw)icy+s2u6 4brybzv5 o 2rpc)so charges?

  A 5.0-mC charge is placed at the 0 cm mark ofpax: y(o e5f+q-;: pmdeqv8xk a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What (5 q q8xv oaxm:e:f dep-y+k;pis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and,iaf2y kcqd j- (i* ,0ms.dnah a -4.0 mC charge is placed at 0ji *.dyna-c2dm,faqs ih(,k 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 -7.0 mkd+-e898rw7o 3har+ab9e p unvfr 7k aC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pe+ 8v r8da7-7hou ner k+3kw baprf99aoint midway between them?

  Three 3.0 mC charges are attu/u gnyck2)3qzz 2u( the three corners of a square of side 0.50 m. The last corner is occupied bytgnq2cu(u/k2z) 3uz y 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 the4zcf+a1 nhbiaa (6:fp corners of the square as follows: +4.0 mC at (0, 4 ai z(f+cphn:fb61 aa0); +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 5.0 mC when itcb)8alp)-z hh is placed in a uniform electric field. What is the magnitude pbl)z-hch) a8 of this electric field?

  A particle with a charge of 4.0x emw4eas.s:9m1i lf+ j9 fo,q 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 u :kw8o)vdd8 fg.+ flbg is placed in an electric field of 6000 N/C pointing downward. What charge muf )k wbdvgo.8+:uld 8fst be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chnbahs. o;1pe4zji n*f00 - bkkarge of -2.00 nC. The ball is placed inside a uniform o *0skzke j-;na1in. fb4b0phelectric 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. lifcllws yr)/2dm4.+. q cuz(:vji m1What is the magnitude of ti1 cis+m r4v. :jdl(ymlql u)cz/f.2 whe electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carriesfxc711xk3wf+- l x z-:pksuiq(y-lv j a charge of 3.0 mC. What is the electric field 6.0 cm fro -3 zi-l7 cx jypfl:( wsxqkv1u-kx1+fm the center of the sphere?