State the law of conservation of elecxdan/ v/kn,( .ukbee*tric charge.

  Is it possible for two negative chargem x5ys9 n*uy+ps to attract each other?

  Is it possible for a positive and a negative charge to attract each o9hk s6;)plik pobv6a7 ther?

  A glass rod is rubbed with a pl0 ; h3k/ fxol -yzpb5cw1q5qciece of silk. During the process the glass rod acquires a positive c/cqb ;-w5 fhy3lc0l1oq5kxpz harge and the silk

  A proton carries a

  The model of the atom shnkgp,k0h9p n5se,+. w86x8btdau n mlows a

  A neutral atom always haszgl h ime3aue4 k;;..y

  An atom has more elexjcyy2l; k5: tctrons than protons. The atom is

  Materials in which the electrons are bound very tightly8,jr0t s4xcdox+j5*v h(uryd to the nuclei are referred to a,v(*d ots 8 4 5hc0rudxxy+rjjs

  Materials in which the electrons are bound very loosely to the nuclei an9:us259mvq t kj mlf,o 6vkor4d can move about fre :tm9vskloo6 k2r 9qf4,m5uvjely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m;w:jm,ro(yjsz. 8xtj etal bar. The end of the metal bax y :s8.tozjjr,(w mj;r farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and s ysh;):/bth hwphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. : wsbhty h)h/;Which statement is correct?

  How can a negatively charged rod charge an electroscope pegc+re ,j,lh-x 4j0ge ositively?

  An originally neutral electroscono4n2 u,n hew0j56jbc pe is briefly touched with a positively charged g,c4we0 n 6h25ojjbnu nlass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively can zv8 yn974pcharged va 48yn97pncz glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object toucw1rw g ir8c8k;(8qibghes a neutral electroscope, and the leaves separate. Then a negat1( 8q;ir w88rgcgwk ibive object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pla.img:g:x7 zl+a 1blt jl06 smrced on an 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 sizs: r.0xg:m1g7a mbtllj+l 6tops. 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 .dd x9c1 n;:zrc p(tv*ka,sr sconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largei3i ,blj etu22fnpzc, tf6xs ,g73m3s r in magne,3 xfi ziutt2,,c2sg3m sjbp67 l3fnitude than the second charge.

  Sphere A carries a net charge ann)o ,cu)rhup:8 efl:c6qd 7ncd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between theq ucn:eudnc)plr)78, oh: f6cm?

  Two charged objects attract each other with a certain force. If the charges onza:,;vs7r 9va4ihaes*s k1 uf both objects are doubled with no change in separation, the f*i4k1uahsa7afev;s :9 , srvzorce between them

  Two charges are separated by a distance d and e0p lxsbdy0xveq i-;rm 2h7x0; xert mutual attractive forces of F on each other. If the charges are xm-s0el0qb ir0 xhy;v x;d7p2separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract ,,1m cn4e rdqseach other with a force F. What happens to the force between them if one charge is doubled, the other chc,s,m er4 q1ndarge is tripled, and the separation distance 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 o pm 5o99 dc3rxzzx25 /3*cg)psicsqpnf 1.0 m. What happens to the magnitude of the force on the proton if a second e95/ci )9r2s*x3q5 nc x3z ppsogzp dmclectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens 41fz*p )1 nhuiute w8x*.ante to the magnitude of the force on the first electron if a second elec 8f t wu).p*n1tha1nezx*ue4itron is placed next to the proton?

  An electron and a proton are x+ywxk t1 7+ .uzg5vldseparated by a distance of 1.0 m. What happens to the suzv w7.gyx +1t+d xk5lize 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 cenwlbrf: z dek-4q+ k,,fter of a square. When a second point chae:w f 4+d,-qzlkfbk,r rge 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed o9q5 qoh)jk*h j(*wlfat 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 the other v5*(oqj9 qlh *fkw )jhoertices?

  Which of the followingl 3y6.ixwfo :u is not a vector?

  At twice the distance from a point charge,1l+enu( 3scfnh 6we) y t+na0s the strength of the electric field

  Is it possible to have a zero electric field value bet3 9zmsc gi+9ho2a9batween a negative and positive charge along the line joins9ohzbig3t +m c92 9aaing the two charges?

  Is it possible to have a zero electric field ubx yr,8 9h,-nsigd/b value between two positive charges along the line joining the gd un-by8 b i,/rx,9shtwo charges?

  Electric field lines near psitive point chargesr c, o.n y-sx6k5waidh1y.y(t

  The electric field shov.6;ktb aluez; f i9 -e mqmz4/lyg1-own

  Can electric field linex1 /hx9v( lwj0upt8pqs intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unif0p w fo.nxw r;z410(2y mcdwmc-tjp7dorm electric field. Give a statement concerning the electric field in the bj7zxn2cwm0 1wrom- t0w4ydppf;.( d clock's interior.

  If a solid metal sphererh 7he6orj6svlufbu +(z-4( 87clcfp and a hollow metal sphere of equal diameters are each given the same charge, the electric field lujs ehfhvu6coz+pc( 47r 78f(l rb6-(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wo +qvpcc21i.ergw;) cyf-c:z woden table in a region where a uniform elec+:grc2 );1p vwe-ccy c.wziqftric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostaab v99wh3 p+bltic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grou5 drzj637mtsuv 55xfqfawo: a+/fx2jq8je g4nded. As compared to the case without the hollow sphere, the electric field at a point directly abooejvswj34f2f6 :rx 7qjqx u5 5mg+df5za /t8ave the hollow sphere has

State three properties of conductor-6r;f)kfg ukvei ;t o7fiug,t9f p )/is in static equilibrium.

State Gauss's law.

  The charge carried by one electron is d,wcqdk9*sjw*;y 6 pw$e = -1.6 \times 10^{-19} \; C$. 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 el *azd0bv/ :f3 r6z uk6*1kdmxppgs6-ejc vu u7ectrons does this piece of pla:pjkd6dpszm3rkv/xbvau76z* 0cuu 6g1 -ef *stic have?

  What is the charge on 1 kg of prxk* hh 4ia5k;lv ae.u5gss7m(otons?

  An atomic nucleus has am9 bqe0c)kbmr2yk 3o5l ;zv*g 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 valuqye q1 2csxq081lk i 0p-s7mcses of 2.0 and -4.0 mC, respectively. What is the magnitude of the elm8pq 72qsl q10x0ey kccs-1isectric force between them?

  A 1.0-C charge is 15 m from a second charge, and thedj4bd/x+shw0 force between them is 1.0 N. What is the magnitude ofw +j0dx hd4/sb the second charge?

  Two 1.0-C charges have/t eoq5rm;j .d a force between them of 1.0 N. How far apart are they?

  The force between a *;l iuvio2m (vi2kz,u7k,kun ( tim-p$30 \; mC$ 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 1.0-4 rxutyo-n ; .sm0r;zcN force. If they are moved to a new separation of 8.0 cm, what is the electr t0.muc;sryznrx 4-o;ic force between them?

  Three identical point charges of 2.0 mC are+fthvtd9)98yg l kxn 0 placed on the x-axis. The first charge is at the origin, the second tgflk0xv)8 dnyt9t +9 ho the right at x = 50 cm, and the third is 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 placed , j8:yj2mbktl7pn g d+on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the ri tdb78kpyl, mj: 2gnj+ght 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 origin?

  Three point charges are located at the following positions: Q1 = 2.00 clby.5 a l0i )(jouk3pmC at x = 1.00 m; Q2 = 3l j0ckyl.3(u bio5a)p .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, airu *-y3gdvvdh3 xjyyxo. pm p2-xo9m+iy8/1nd a second point charge of -Q is placed at the upper-left corner. It is3jdvyi1-m+y9 o dpxv -gpir ouy8.3mh2 xx*/y 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, 0.10 m); Q3 = 5.0 ndh/) o-5 jte5u5cm psw 71bwwuC is at (0, 0). What is the magnitude of the net force cd7 pbue-wo5w m5stw/1)u5 hjon the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qad kbju,)quk,v *vxajk35h),2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the directio )k)53 hvax,,aukvuj q,bjk* dn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices i mck6xibus6q594 ae /of an equilateral triangle which measures 30 cm on aibx4 q6/ 6s5icmka9e u 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 separate zwtg9(-b j 6)o8bipmxt-u );fo8gtzpd by 3.0 m. At what point, on a line between the two charges,b8izjopt z -f9()wogb p8)mttu;- 6gx 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 +9t)dp3pec u4ge4kc/h(.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerochkp4u3/ )p4 dteec(g?

  Charge +2q is placed at the origin and charge -q is placeav * *8avgd6 s*hy2mnse,4yer d at x = 2a. Where can a third positiy86,e m**nr4 sed gavyhsa2v*ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t3-(k6n kc,z n*uqvuiaotal 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 u t3xrfri 39c0 pk c4;4cnmz*bforce of gravity by the attraction of a fixed proton some distance above it. How far above b; 4n3rp cr*mzci 09ctu3kx4fthe electron is the proton?

  Two 0.20-g metal spheres are hung from a comm(b qcov6t5qcfi- 4f lfa/c)d;on point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elect/dqc4a 6cvoffc5- itflbq; ( )rostatic 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.,*f ehmto v(wfvm(a3 : What is the magnitude of the electric field at a distance of 1.0 m tmofavfhv( , *:ew m3(from the nucleus?

  What are the magnitude andlnayv mewub72 -.szen v.(1r* direction of the electric field at a distance of 1.50 m froues2arw* ynb7 n z me.vl.v1-(m a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the9k:ij(5tlp p v magnitude of the electric ftp5k 9v j(pil:ield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge.ozy(qwo1+81z glh3 r q4de/wk What is the direction of the elec+qo 8wkl(1w 1dz3ogr/q4hyeztric field?

  A 5.0-C charge is 10 m from a small test charge. What is tdv.ppd:y 3k4:k0 0ewxhm3b+ vvu h.mx zc8 we9he magnitude of the force experienced by a 1.0 nC charge plpebv3: pxw0zyve9du4:m8 hc +30wkvd.h.m x kaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separat hing13o c3wtm:t0y c;ed by a distance of 4.0 m. What is the electric field1tc0 g3woytnm ;chi:3 at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC c 2qsl7 u1xl7fl wu7(kfharge is placed at the 50 cm mark. What is thfqlx(2ws1f l7lk7u 7ue electric field at the 30 cm mark?

  A 5.0-mC charge is placea;x-zia4; ukisrt 3ld,ib yw.ak02g/ d 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 fie-/a.tas2il g0uk y wx k iibza;3r,4;dld zero?

  Two point charges of +3.0 mC and -7.0 mC are p83 ffjpdz0z xe) wp.g;laced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweep f)w0xg e;zfj3p 8.dzn them?

  Three 3.0 mC charges are at the three cx:w*4fi) v)wbfwm tuxz3, n)jorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric f fj)4w:b w)wiz,*3x)mxtf u nvield at the center of the square.

  Consider a square which is q;9n2ddgctd5 1.0 m on a side. Charges are placed at the corners 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 q 5 td;n2cgdd9magnitude 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 placlsm xq2exz.t c+ .wf)cj49dt) 6nv6 kred in a uniform electric field. What is the ma62)jttzew.+dcs qrkf 4)mc.l n x 69vxgnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of 6is26 7jfs /vu fdmycq( y .v88jty7ve$5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mas,owf/b; 5n scas 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must b5nf/w oc; b,ase placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g ee:,al 4ncm7gb6d3a y carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity.4dl: c3,nemg6y aeb 7a 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 the magnipufhp9 + l,d8itude of the electric field 5.0 cm from the sphe +pl, up9h8ifdre's surface?

  A metal sphere of radius 2.0 cm carries a cha,syvh m/x)r 7drge of 3.0 mC. What is the electric f,)y h r/dmx7svield 6.0 cm from the center of the sphere?