State the law of conservati1f3efo;78 dm0awg zpion of electric charge.

  Is it possible for two negative charges to attract each oszx l/kgk /bv(w*.;e 2:c t9v+gbkyupther?

  Is it possible for a positive and a negative charge to attrai7: fmik.yoc8 )wnju/ ct each other?

  A glass rod is rubbed with a piece of silk. Drjfo8fna8 7tsxt16p(ub p. i 3uring the process the glass rod acquires a positp(j8u nr6 pfox at7i.t83bfs1ive charge and the silk

  A proton carries a

  The model of the atomp5d6 9criwcd6 o p7 ozbkv24b- shows a

  A neutral atom alwayt7dp 6 y* gxe-gh/tp7 *- nsjoolwdi56s has

  An atom has more electr)v )tzc4y jy ne/2;jteons than protons. The atom is

  Materials in which the electrons are bound very tightlc7q,whay)yn+ j m)l7o:kq-dee t s9r.y to the nuclei are referred toyo yk-t 9a)+7emlq, hqed) ncrj7s.:w as

  Materials in which the electrons are bound very looiy*dncv/dp30 ytk )w(sely to the nuclei and can move about freely within the material 0)/dc3k dinv*( pwtyyare referred to as

  A negatively charged rod is brought near one end of an uncharged o;k;i ib-vtq-metal bar. The kit -bo-;; qivend of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and spher xfk2 wx3xbaa2r4 *,8nbw1dwre B is neutral. They are placed near each other on an insulated table. Spx34,2kb8*awwa2fbxxnd r wr1here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charge ;gqst.trabsoq :+mc-, 0s+x 0 :ivtlqu+.vl yd rod charge an electroscope positively?

  An originally neutral electw7,,j i7w,b rfwfp+be mo 4;vbroscope is briefly touched with a positively charged glass rod. The electrwf7m7iw +berow f jb;,,v,b4poscope

  An originally neutral electroscope is groun)s9ah .xsw 3wa5vhqu n:9 1jpcded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosp.h s :awq9nu5wj9cx a1h) sv3cope

  A positive object touches jtlv rr0ei,dk;hj./4he+vj4a neutral electroscope, and the leaves separate. Then a negative object is brought near the elecrt d/je0vlk4hj+e ;rv4.hi,j troscope, but does not touch it. What happens to the leaves?

  A large negatively charged object vt/awp ep +h//k.o3jcx0 xs4 vis placed on an insulated table. A neutral metallic ball rolls straight towaoc+j0vxes// xvp/hpwk t.a 43rd 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 each ball?

  Charge is

  What are the units of t d-u4 s rgcp3w/4-iobthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dis/eie ik n-qjo,1+so a)tance d. The first charge is larger in magnitudeji ka)s,/ q in+o1eo-e than the second charge.

  Sphere A carries a net charge and spheh5d eeqytq5 zi80* 5cjre B is neutral. They are placed near each other on an insulated table. Which statemeqcz550eh* t5iqd yj 8ent best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the ch4tt4l us-lg 3targes on l- gs lt3ut44tboth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exer /xri5jmj5fi . k( ha829rtxgmt mutual attractive forces of F on ea/ia( 5jmxrk8t if52rgx j .hm9ch 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 a*-x1v+l lstf force F. What happens to the force between them if one charge is doubled, the ot1+v l-ft *salxher 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 by a distance o ;x:hvqlld/ y7f 1.0 m. What happens to the magnitude of the dh;xl/l:7qy v force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a4c8lg b*0v v 662yyn6cp-jqazcxvp a4 distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexpvacb4l cj4-zx8*62vv0y66ca q g pynt to the proton?

  An electron and a proton s1i -wr3qjg.:x bvu-c4pd 7hv are separated by a distance of 1.0 m. What happens to the size of the forc4uvc j: b.-w3siqpv1hr7- gxde 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 a sfkg(y c70b i;fquare. When a second point charge of -Q is plfgb( y7ckf0i;aced 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 an equcp0/9j,u6rle y q rh.iilateral 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 chargy9ih 6qprj0l/ ce.,ru e of +Q placed at one of the other vertices?

  Which of the following is not a vector?,0i yl/sb hcb4t9fn 4 rkr1t8m

  At twice the distance from a point chargqz-ns)exklah ub+j e 2/b 22y5e, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and pos8po.ryvk 8fl2itive chark.88 lyvf2o prge along the line joining the two charges?

  Is it possible to have a zero electric field valu+zuhp-)t 3tci wr5g8le between two positive charges along the line jo5p8zu-r3 chig) t+twl ining the two charges?

  Electric field lines near psitivbq(plh 3,ets9 /z/wooz 9i8v je point charges

  The electric field shownjeb(rs m72n7w

  Can electric field lines intxehy 0:v* b/2)oabop tersect in free space?

  A solid block of metal in electrostatic equili5o+ez g11wp/o:yi 0 usn6bskx brium is placed in a uniform electric field. Give a st b0z gn/6:e5 uwo xsy+kpsoi11atement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of e zk(zw.xnef+(5jk*f equal diameters are each given the same charge, the electric field (E) midway between the center and the sur z fe+k.(znk j*(xfew5face is

  A cubic block of aluminum rests osnq99j u a,gw6n a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning 9qaw ns9ug6j ,the charge on the block's top surface?

  If a conductor is in el.i ibrc 2) bd,sne1bj2y*4 jelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphec,rk9gjk(rqxo 0: m -bxrod3;re that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovercxkd rxoo qm;j9r0b-,gk3 :( the hollow sphere has

State three properties of conductors aw )* duhz(x0om3t tjbl)*d+ ra vy894or5jmn in static equilibrium.

State Gauss's law.

  The charge carried by one3npu*t :qjl quamp*1 c:f-,iq 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 hasq -s1sqt q-s0s a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic h- qqs0s-tssq1ave?

  What is the charge on 1 kg of 2:b(gwdlbr9 ,u;iiqcprotons?

  An atomic nucleus has f 8-14b yd(s *mkwywjda charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep79xw.fpweom, arated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude owx.,f mwo 9ep7f the electric force between them?

  A 1.0-C charge is 15 m from a second a2m vwpt1yv sra,( s9/yyim) (charge, and the force between them is 1.0 N. What is the magnitude of the second29vv(t m1yr,/y (yw pai sasm) charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tmo5d v3yd 2/drw;ms 3dhey?

  The force between a tyjm80b zy guh:f 2 +(nbdabj0: g8u,n$30 \; mC$ 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 for onc/lsla:* :8n4xdr mn n)l/fce. If they are moved to a new nadln4nm/ r/on sl c:l)x:*f8separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the xdsvjkmt: g80c,/wkkxz -g 76c -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 direction of the electrostatic force which acts on th 7k0jkz dv- sxkgc,w/6: 8tmgce charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2. a0k+.i8 xhhem0 mC is placed at the or0mi+.hxe 8k ahigin, -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 origin?

  Three point charges are located at the followingle+vr:4sfgo j;kle 16s)ai n) positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is theev)f1j;n:lr ks4e6ol + i)asg magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poil54soe xio/gk,:w + bcpyb1 ,cnt charge of -Q is placed at the y oxe4b:bc/ 1 5,+pks,g iwcloupper-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 is a,5c d fu5dre+zi*g.mi t (0, 0). What is the magnitude of the net force .m5i+e,idz5*c ruf dg 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 mxfp.,/ g d)rpd); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCdfdp ),.rx pg/ charge?

  Three identical charges of 3.0 mC are pla,fifaw(; p6;eh1l6t/hq n:kmor r.fb ced at the vertices of an equilateral triangle which measures 30 :k.p1;nbh /t e;o,h6mwf6( r flfrqiacm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges p;/3 ngb50cul f frwx p7i(ta1of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrop tbrcfw;lp3 ungi1 0fa5/x7(static force acting on it would be zero?

  A +3.0-C charge is at the origin and aphgwjuggz99t 3fjg ,dk2281p +9.0-C charge is at x = 4.0 m. Where on the x-axis can a th1t98phg 3g9jgu fj2p2g dk,wz ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wv ntu74xm .)(ta ctw(shere can a third positive charge +q be placed tva)(umn . t(t4sc7 wxso that the force on it is zero?

  A copper penny has a mass of ds5p8+xrnnkbht 6k 0) 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 agai s h+d/5f54(nbrkvd dfnst the force of gravity by the attraction of a fixed proton som5r n fvb(s4+fddk 5dh/e distance above it. How far above the electron is the proton?

  Two 0.20-g metal sph6mbgz 6h/un ;leres are hung from a common point by nonconducting threads which are 30 cm long.g;h6mb/ nu6l z 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 g7lzi4qy- km-the magnitude of the electric field at a distance of 1.0 m from the nucle k-lgq-4ym7zius?

  What are the magnitude and direction of the electric fs,rhdsu4 7h+jield at a distance of 1.50 m u7 js,s+ hh4drfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the m q4+d8bk 8g 0bgv+ baljsezc+chs6q0 4agnitude of the electric field at the location of thb6s+qehb g4jccq8kvg0zs+d+8l 0b 4a e test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th(xz/(x0iaqb1 w3 xd )hdc:tpwe direction of the electric fiz xa1i)(3c:wpdxhq0wt /d xb(eld?

  A 5.0-C charge is 10 m from a small test charge. What is tpye+8paqsly7.eiy3j t 0v,1y he magnitude of the forcy,e + yat03 .yy8 eqpsl7ivjp1e experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0a q2kqd.g5 *ra s9;mr9 nkyt;t C and are separated by a distance of 4.0 mnad5kk.m rq 9q9tta;ysr ;g2* . What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andme- mideiktwl/ i +c0hv) 44,g a -4.0 mC charge is placed at the 50 cm mark. m h-c4 wv/mgi)e+t0kiidel 4,What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of u+x awgfvz+00 a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what po +z0+af xgwu0vint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an1i f1xtqmfl *e+x**h16olc o ed x = 0.20 m. What is the magnitude of the electric field at the point midway bexxloi 1eo+fmeht f*1ql61c**tween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The bm ;+duy7jpq +last corner is occupied by a7 ypd++bqu mj; -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on ai4dlx 21/ls jiix/fum 6m en)3 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 magnitude of the electric field at t4ilx 1lii3/xdenmm6 j)f /2ushe square's center?

  A force of 10 N acts on a charge of 5.0 mC when yl d n:2v smtomldv8e5l4q:* 6ww88fu it is placed in a uniform electric field. What is the magnitude of this electe8st: n5:mv ow m8 lu842v*fdlydw q6lric field?

  A particle with a charge of 4.0 mC has a mass of qr:aaqf/8 xx: $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g ioxuvc+tr+z))kbu i .8s placed in an electric field of 6000 N/C pointing downward.) 8+ +xkorz)tucubvi. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 8 p )xa/mshh+ha8nv6qf b7tufj1 0, fd0.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended aghauh8, p6hq f/avm8nbff )+17s0 jtxdainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries5 .rb1z .t09ogt.vvce lh lam. a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphe m.1l. to9r5 .vbtcahvz0le.g re's surface?

  A metal sphere of radius 2.0 cm carri q vp,d;60mzcp0u 4ojles a charge of 3.0 mC. What is the electric field 6.0 cm f4do;0uc6zq lj, v m0pprom the center of the sphere?