State the law of conservation of electric 6)m5ba mv 23+4cxw3 -wzkv0k kbxkxi u2h.nlqcharge.

  Is it possible for two negative charges to 5ake ;a :/mgp3 kh*bftjykt/; attract each other?

  Is it possible for a positive and a negative5 .whk14 w)kix1tfdsy charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass dj7p,vo3/3asld7b9kw ( deierod acqw( 7 9sedpj ,kil3oa/v7b ded3uires a positive charge and the silk

  A proton carries a

  The model of the atom sh7 77en8 urr dxqw8z71wm0qxlx ows a

  A neutral atom always hk+rz tezs77ev8kpb7( as

  An atom has more electrons than protons. The atom uk ,qkyy+g9 w4,5q qmid8t q6bis

  Materials in which the electrons are bound verwx2ae*c,g ljis+)n ;as u0ld1y tightly to the nuclei are referred tu l1de jxa0gnli;sc+w), *a2 so as

  Materials in which the electrons arecd(s g r/g0( 5bue5lm- bmbyf/ bound very loosely to the nuclei and can move about freely within the material are emm5 - r(5(yfdgbs0//gcublb referred to as

  A negatively charged rod is brought neez+j :nnf q-ea(so5*p ar one end of an uncharged metal bar. The end of the metal bar farthest from the5 fqoe: nsa-zp*(e nj+ charged rod will be charged

  Sphere A carries a net positive charge, and sphere B isnwav6 h1bnp6. neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wiva nnp66.1h bwre that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc:g-ecw7r yj*w1a,g*oom e3e5rvb4f i m)g e:nope positively?

  An originally neutral electroscope is briefly tord.xya,u8m n;c xt 1x2uched with a positively charged glass rod. The electrduxnxta;.c2 x8r1 my,oscope

  An originally neutral electroscope sht/ o 7(azez xy6:;ny zyp/;.gmg,viis grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ygmy / xsogzzh.yv:i7/n;p6 (t ;az,eelectroscope

  A positive object touches a neutral electroscope, a 7u4hl.o/x tgnnd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens uo.7/ng4tlxhto the leaves?

  A large negatively charged object is placed oe tmk:qk(s7/mt g79g8se/ cjhy6 ;lxwn an insulated table. A neutral metallic ball rolls straight toward the object, but stop7 gmeswqt/;8xe6sjh 7(9kk cm/t:gyl s 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 each ball?

  Charge is

  What are the units ofp7m(r) owj ai3 the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ay0 3el30ldjl-8ky*qqnb wki /re separated by a distance d. The first charge is larger in magnitude than the second cbk30e ynidj0 q/3y8 q- lklwl*harge.

  Sphere A carries a net charge and sphere B is neutral. They iog bz 7l6*h)-sq ujg:m)r5y sare placed near each other on an insulated table. Which statem:ur5 qjszgg76 slb )yhi) o*-ment best describes the electrostatic force between them?

  Two charged objects attracto8a/-g lviwe; each other with a certain force. If the charges on both objects are doubled with no changeelg /;i8wvo -a in separation, the force between them

  Two charges are separated by a dist49ec m4eblw,zep,p 1xance 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 for4z9we4e x el1pp,m,b cces?

  Two charged objects attract each other with a force F. What happens to the f7;aw3fb) msltorce between them if one charge is doubled, the other charge is tripled, and the separation distance between tw 7 a3b)st;lmfheir centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated be;(eekplk1t,, ;k6ax *f o xhry a distance of 1.0 m. What happens to the magnitude of the force on the proton ife,fa(e x, k61l;xpkt*; ekorh a second electron is placed next to the first electron?

  An electron and a proton are separated msa:tugeykz (-a 7qm c58j5/vby a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second e(5a 8: s5vzmk cjqae7tm-uy/glectron is placed next to the proton?

  An electron and a pro6k 2k0auarq3 mton are separated by a distance of 1.0 m. What happens to the3ka 6ukm2qr0a size of the force on 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 ajztx;x/+a jjo +e3 fmr, lw6(t 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 chax j(wr3a jt,6+l e;fojtm xz+/rge 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 eqqo1s: x1g* 3r7kovs1zitr:spuilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N x:1ro13zqss o1tgk:s * irvp7acts 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 vecto fp:a 5uvxqo6e ) l5hf,4av/pxalsd2*r?

  At twice the distance from a pt,; ldid 6cf5oii-s+qoint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative htdhf nw2 -96wand positive hwhd-wn 926ftcharge along the line joining the two charges?

  Is it possible to have a zero ed 1u)lc1h-w3s m 7mj1wbxv 0fujb- x7zlectric field value between two positive charges along the line joining the twuj7xdb1 -j 3mfuz-l1) 0wb17vwhmcsx o charges?

  Electric field lines near psitive point chp ribm8 wljyx+p/r5 80g8i0azarges

  The electric field shown v3 oz+ag*nsm(

  Can electric field lines in 6yxdg*4kn2o utersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifocj4u vjba0ha(,m5e66pvv +j g rm electric field. Give a statement concerning the electric field in j vva5 jhe4j60avucbm ,+6 (gpthe block's interior.

  If a solid metal sphere a wfg0tgf58 lx-t,y kzy l+,v*nnd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) mid8z, g-,ffll*ytw k 0gy5+x ntvway between the center and the surface is

  A cubic block of aluminum rests on a wooden thetkvf( (4n.zable in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t(hef .t zvnk4(op surface?

  If a conductor is in electro 1 *igu2p;5uzknp v.lcstatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow me3kv 5-- h z7pc)8n8ea9cmiplysjn4 owtallic sphere that is grounded. As compared to the case without the hollow s-klp c-yh3ji5o ezw889snv pc7n)4ma phere, the electric field at a point directly above the hollow sphere has

State three properties of conductoqm1 bl);finu 4u.r hf*rs in static equilibrium.

State Gauss's law.

  The charge carried by one electr+v,sorn 5)z hsa5-epron 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 man-te vo oapy+e me323*p, .w //moqwdzhy more protons than electrons does t +aovz/ p.e/w ,p-q3ow odyet2h3m* emhis piece of plastic have?

  What is the charge on u6s(/ oaxfl3j1 kg of protons?

  An atomic nucleus has 5v( wde-:ps4dggdd6i a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, have charge values of 2.0 and -4. l;(8o9w hsmre0 mC, respectively. Whhwrsml9 o8(; eat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them isy(xesoe 99 /8 brj ttr:d kvd8y8t+von63elw- 1.0 N. What is xjy3t e-no e+y8v6wv8r ( sttlbk/ 8dod9 :9rethe magnitude of the second charge?

  Two 1.0-C charges have a force between ti0: 0gh,-nwpn,-u uemrp8bg l hem of 1.0 N. How far apart are they?

  The force between a cisgu(g1rfx2 0;o9sj $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially j u;e)xuq 2uc*2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the exuq) 2euu;c* jlectric force between them?

  Three identical point charges of 2.0 mC ario95b:it( 3 bupm y3oie 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 mariobmuto33 59ipib:y( 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 the x-axis. A charge of +2.0 mC isgw-w ;u)cbq8w etvctjt,;k82j58 d od 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 electrostatic force which acts on the charge at the originwct5;u-jek) vqtj82 w c;do8w ,d8 tbg?

  Three point charges are located at the following positions: Q1 = 2.00 mC ad9+wfjb )ath13 rfa+jt 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 forc+ahajf) jwfd 1r+ 3b9te on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point c);oqia;bd-vy1tq hs0l ml * g2harge of -Q is placed at the upper-blivgl0*m t odq-syhaq1; 2 );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 is at (0, 0.1 l(v*3j rc8w0jz56vha0u cuch0 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nuul80 j*0ccrv jczv3( h6aw5het force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qzejrnvlwd wx8m+k /fd3( hmgic:3,6 )2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0) +h8kn/)vmxdr ewf:3 l3( g,ij czmwd6. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices 86juwcvcuz8, trk6t /of an equilateral triangle8 vu8k tc6uw,ctr j/6z which 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 an+std0p i ;b4dud +4Q, which are separated by 3.0 m. At what point, on a line between the two charg+ib ; 0tu4dspdes, 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 x = 4.0 m. Wheu+c: epb 0fpgl+jegk*:h yo:* re on the x-axis can a third charge be placed so the net force on jk p*beg*e ::coyh+ugf+p:0l it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where bvcj h4. d6:ddcan a third positive charge +q be placed so that 6vj:.d4h dbcd the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of jk9,d4 cr*ymwf/ wk(a$4.0 \times 10^{12} \; electrons$ 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 zt;emy m6,; 1f r+jsjsup against the force of gravity by the attraction of a fixed proton some distance above it. How fj fj1 sr;s6;m ,y+zmetar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncol+jc55uwk.l/ ncg*k pnducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threads isp5lccjl5k +/ .kgwu n* $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Wh)rl (h b ng2r7(6u, dx0p/h elhox)rerat is the magnitude of the electric fie0luh,g() rl7rhdr nexb6(p2he/o x r)ld at a distance of 1.0 m from the nucleus?

  What are the magnitude a+ ona*fq v0:dlnd direction of the electric field at a distance of 1.50 m from a 5lqao0+f dv:n* 0.0-nC charge?

  A 5.0-C charge is 10 m from a small test c flq: 8yrk6l) -oyhyq,harge. What is the magnitude of the electric fiey:6,fyyqlkr)-l8 o qh ld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charbuy6u -4duy/2zz yw-n ge. What is the direction of the electri-n6duy ybuz2 -y/u4z wc field?

  A 5.0-C charge is 10 m from a small test j 6s/+r-12+uq:(9wtjvti0 qi gtebop zc6 gsncharge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the q -1gco6s+ 9gz+s q2wtijn e pu/rtt(bi06j:vlocation of the test charge?

  Two point charges each have a value of q:rahum81 :,qm*ta i x;rq5bu3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two rhqqm* :u;xmaq,rb:iut 158 a charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mete/ hf/5 d tqp3qade(y 3losr9)or stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric pda l 3)qo(y//oed3qt h9f5rs field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm:gh *u)dx cyfv:m+d,k 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 chargk,m*h fg: dvcdy x):+ues is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 / 5a1e*bozy(oi escxf 95nqw. and x = 0.20 m. What is the magnitude of the electric field at the point midway betww5n9 1 sqz( foi*y x/a5bee.oceen them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.-oafn 2hvm6/w The last corner is occupied by a -3.0 mC charge. Find the electric field at the center/h2ma -wno 6vf of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners 25qf1 u bku/l*jjtbv) 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 f2)tk fj bj*u5 vqlub/1ield at the square's center?

  A force of 10 N acts on a charge of 5.0 mC wh( :icjeclu23q en it is placed in a uniform electric field. What is th:2e cil3u(cq je magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass hij m*0c,8 keet7y0* ryel/ytof $5.0 \times 10^{-3} \; kg$. 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 elym)(zyvav+c )uaj ) 9lectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be9l+)zcy )(jv yaa) vum suspended?

  A foam ball of mass 0.150 g carries hmwimesb7g ; xc2)5terv4y ./a charge of -2.00 nC. The ball is placed inside a uniform electric fielrb cm2);wegxyvhi se m5/47t. d, 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.dmqxqh 63w57:hzw av )r/ r:pt What is the magnitude of the /xwa:qqh3 zrhmrp :5 w7)tdv6electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a ejqb11*:uek uhu + 2ymcharge of 3.0 mC. What is the electric field 6.0 cm from the center o+e*ykj2he1qu um 1:buf the sphere?