State the law of conservation of e0ux u: jtsf4at641vo slectric charge.

  Is it possible for two p5/ l*v;dgdd knegative charges to attract each other?

  Is it possible for a positive and a negativ+b0iy y bqqe06-vota1;b 8gdj e charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t g47gvhw6e9 vnhe glass rod acquires a positive cheh ngvw7g96 4varge and the silk

  A proton carries a

  The model of the atom sho/;i0z4g u/8gy6ddftgui eo 7rws a

  A neutral atom alway13*1ssqdao,f mkuh uc/+oh(bs has

  An atom has more electrons than protons. Th-9 ukyd:oo67o 5xz ehde atom is

  Materials in which the electrons are bound very tightly to the nuclei are refa 62*wl)a0aj (t qkeaperre 2 epla(a6*qwa taj0k)d to as

  Materials in which the ec; )hbf (w ye.1edie:alectrons are bound very loosely to the nuclei and can move about freely within the material are b 1(cewd.iee;y :h)f areferred to as

  A negatively charged rod is brought near one end of an unchepkew1i3 g-c , /lj,cqarged metal bar. The end of the metal bar farthest from the qjk 1,wee-cgc,/l3picharged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutr gkqi8t+-0*9hznjy yabu 9.gxal. They are placed near each other on an insulated table. Sy9gktj au+qi9-bn 80 y .hg*zxphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargtt 1v:(l4ke pue an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged /ia v26 ml- dgdcs2ug*glasv2igmc 2al /d*-su 6gds rod. The electroscope

  An originally neutral electroscope is grou7;e +wwj zgvr;nded briefly while a positively charged glass rod is held near it. After the glass rod is removed, th7+;e; wgjwr zve electroscope

  A positive object touches a neutral electroscopy.q)i kl9 m9jp*.csrm0z2xs me, and the leaves separate. Thenc9rji.s2y)mkzxm0.smp* lq9 a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insul b8y.rxdgme aq0-5zi1ated 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 firsdyr1a8i ge .x -q5zmb0t 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 constan3)4jmlw+j g )n/:6n 5kv huy6rf 7snnauji ls7t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancvx a+4c -z1ysse d. The first charge is larger in magnitude than the secoc+ a-1s4vysx znd charge.

  Sphere A carries a net charge and sphere B is( , 4gvhpcofh1 neutral. They are placed near each other on an insulated table. Whi4hh,f( vocp1gch statement best describes the electrostatic force between them?

  Two charged objects attract eacabeb75tzkm* -h other with a certain force. If the charges on both objects are doubled with t e*7bmba-z5kno change in separation, the force between them

  Two charges are separatedzdmqa 5z.u ouz235i:x by a distance d and exert mutual attractive forces of F on each other. If the charges di 3:m25z 5u.zoa qzxuare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. i ge(q4t(eru/ What happens to the force b(r4 (igueq/t eetween 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 to

  An electron and a proton are separated j ; -hiqoh .5fu7vlhk;by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron isi ov;;hh fjk5.7-h qlu placed next to the first electron?

  An electron and a prf ohu43 f+bm5bmwd)zh3rou g. l8c /a0oton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a seco0db3obzgu5cwou 8+)f/a m3 h flm.hr4nd electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whanm4a0 1czz )n6wqm s6nt happens to the size of the force on the proton if the electron is moved 0.50 m closer nm)q sa41z 06nc6nmzw to the proton?

  A point charge of +Q is placed at the center ok-l j/-7gbxfrf a 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 charge at the square's center. Now, identical charges of --fj7 xl g/-bkrQ 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 i h3c7lc)sbra7r/b w 9hs placed at the centroid of an equilateral triangle. When a seba3 9hlcrc7s) w r/hb7cond 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 vertices?

  Which of the following is zy8d w(no;a ;hnot a vector?

  At twice the distance from a point charge, the strength of (r4t,gf rj4t+vt zp7rthe electric field

  Is it possible to have a zero electric fiel6 e uhcz9;g9l zl4sip1d value between a negative and positive charge along thel;pics9 g1l 4u eh96zz line joining the two charges?

  Is it possible to have a zero kx9i4 rhshtx(i w3.9g electric field value between two positive charges along the line(h3wxkrhx9 49 gtii .s joining the two charges?

  Electric field lines near psitive gc67e5.uhawbj7y2h r point charges

  The electric field showtu9f zd. cb(+qevty5o x:sk:1n

  Can electric field line57:;jqd wc ce4w*xaj5 (ki oyys intersect in free space?

  A solid block of metal in electrostatic equilibrium is pg80o : f3ljvltcpmk:ar l*y8 +laced in a uniform electric field ygljkfc:8*m:vo +t0l8 lrap3 . Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere ande /jfzj67(fguj r/vf8 f1rpn( a hollow metal sphere of equal diameters are each given the sam(p j18 znf/ uj7gve/r6(frffje charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tabc3 7r:wa *bavvle in a region where a uniform electric fieaav v:rb3*cw 7ld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric e drtyj*(7, hlcharge

  A positive point charge is enclosed in a hollow metallic sphere that9;f q4-4xbukz5.lqkln 7aw vr is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow splfb nzaqrx95k-.7kvu4l; qw 4here has

State three properties of conductors in static sn5rd tjj iy-ylxk4t(u0/.dt8 lf. n4 equilibrium.

State Gauss's law.

  The charge carried by on u *xc1 vouzrf1v:q9i.e electron 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 morez(;( etb :9sbl yit6ho protons than electroni ts:t9;(zl6heob yb(s does this piece of plastic have?

  What is the charge on 1 kg of protons;v*s0e6h nn kh?

  An atomic nucleus has a char,j;vk*mz bg ddyd3sq)e+9 vd: ge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatm .ki .tig94x5ahp q27bpqx,hed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude oxtkxhq7,5.a4 iq.m9ib 2pg h pf the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t*1ki pocr/mu 1t3vt3w hem is 1.0 N. What is the magnitude of the seco3o3c1umpwv /tr*1 itk nd charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f+fsqt3x vz1rq )qbp8 +ar apart are they?

  The force between a l m,mtba65tw-$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc(1n;0 jesqz;vj w fcwjvd3b.7e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forcc;j0(j;q3bn w 7s1j vzw. dfvee between them?

  Three identical point charges of 2.0 m k p*ppcscup-l9k;l ctz866-d C are placed on the x-axis. The first charge is at the origin, the second to the rip-k c*96uc;ksld p86pt l czp-ght 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 70 b, us;/afs +vg2fkn wod0ceplaced 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 mark. What are the magnitude and direction of the electrostatic force which acts on 0bdfcaoe+nu;0s/ vk2 7 w s,gfthe charge at the origin?

  Three point charges are locato tris k;g6 atv+; (n2kkh0rt-ed 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 = -1+0 tskah( okvinr g6r2t-; ;kt.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 squarzc++uvu6oo :b+-sb) )p jkxxle, and a second point charge of -Q is placed l)xjpuz -: + 6xovo)u++ bckbsat 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 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 nC+j/f:dlgs u s 3m)xb (mzb7 u)0zo0dju is at (0, 0). What is the magnitude of the net force on the 5)u j0xf s ubm(+gjzl 3uob0 /:s7dzmd).0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 n/)7keijv1ug/gtg uht . )f;c= 5.0 nC is at (0, 0). What is the directio ktf7ggunh; /gc))/ev. 1iu jtn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral +yz 5ctwn;g6biavy/ o 6v9,g mtriangle which measures 30 cm ovbzgv/ ,i ogy;9+m656wyn atc n 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 whatkom,h)b r;-n t point, on a line between the two charges, would it be possible to place a charge of -Q such that the electros-bonht )kmr,;tatic 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. xgcv z(t,u*s6 Where on the x-axis can a third charge be placed so the net f vzctg,6uxs( *orce on it is zero?

  Charge +2q is placed at the origin anr*/ 2izuc u(8q- prxkri5(zf )bm/d wnd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the forcew(ib(/un)uzkzdr r-5*c2piqf rm8 /x on it is zero?

  A copper penny has a mass of 3.0 g. A e;gt9;1 llj,f, bn z:xz7fda ctotal 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 c-,( bqp)7 p5sfzdlu+ zspa8p the force of gravity by the attraction of a fixed proton some distance above it. How )7p sp f5+zbapzc-8p(sl qud,far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a 6oj* fz+xye+wcommon point by nonconducting threads wz je6w+x*f o+yhich are 30 cm long. Both are given 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 the magnitude of the 10 .ixfv opnfzi (m+9ielectric field at a distance izpxifv(0f oim 1.n+9 of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a dis7 6uyeb c.hftt+-ck(qzj9)wj xn 7 ;jytance of 1.50 m from a 50.0-nC chargyu7hy;k (f)we 7 6c9c.jj b+ zqntjxt-e?

  A 5.0-C charge is 10 m from a p3gdigqy5g 5q+x (f(6rsjjd7 small test charge. What is the magnitude of the eqd3j ig65 prf(qsy ( gg+5dx7jlectric field at the location of the test charge?

  A 5.0-C charge is 10 ppvv5q1w7.)c 8qn aly m from a small test charge. What is the direction of the electric fiep 5)caq7ylp1w v8nv.qld?

  A 5.0-C charge is 10 m from a 66r bh5ya+rhkmyt0q j9;b)k rsmall test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatiot5yqh )kmjbyr0 kb; 9a6h6+rr n of the test charge?

  Two point charges each hvdx6mqrb/0mo 3* xa:*y90rz 9lzfoa have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric fielym*0fboaol*r 3xq 9z/h 0dx m 96a:zvrd 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 ch s;uc7yz)qtszh y kp7 h5g9g60arge is6s t ;kz0pys5g9z)ghyq7 uc 7h placed at the 50 cm mark. What is 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 a -4.0l30/ lpw9vu7( /5tnmnxdoi 4gzuba6d mC charge is placed at the 50 cm mark. At what point on a line joining the l6v0/9n/dpl z ugdi7 a n3w( 4xmtbu5otwo charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed *d d :lgez py,/g )qik8k/;pf9lvqg r9at x = 0 and x = 0.20 m. What is the magnitude of the electric fielde fp dvk// ; llg d9)zyqggqi98:*krp, at the point midway between them?

  Three 3.0 mC charges are at the three corners of al ,xzw nt4vb ba62u7 f48k;udc24wpzo square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric ffn 24zldubpb2k7ouc,aw 4t 4;xw 6v8z ield at the center of the square.

  Consider a square which is 1.0 m on a side. Charges ar*zc1b j9ww:yoe 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, bjocz* w91yw :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 itm bnvvx rb+0.; is placed in a uniform electric brx+n bv .m0v;field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC habtn0yg-t(i8l9(kg fe bzeq() , zr 8xps 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 pg;rwu 5dcx, y a( et93oq.1qtg is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ballgu,xeo 5tq.p3qa9wrcy 1d (;t for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball t-: 5kkg )brjugt(f/:di rv*pis placed inside a uniform electric field, and is suspended against the force of gravit/:gjfv*kr i:-(tukb d r5)tgp y. 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 wmgn/kahrw7 ;5v0 8kvis the magnitude of the electric fielg h7awmwrv/08v;kk5nd 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What95esylkjot)s4 j- b4t is the electric field 6.-y4jl b 5)o ss94kttje0 cm from the center of the sphere?