State the law of conservation of elec04ebda9 pm)y ntric charge.

  Is it possible for two negative c: x.jul 9gko(charges to attract each other?

  Is it possible for a positive -ytsa*e01vfx8,lf be-o 2t vof-0 met and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process t -5 r:goy;srif g*wz+yhe glass rod acquires a positive charge yzi-ggrf+ r:syw; 5o* and the silk

  A proton carries a

  The model of the atom shows bs2 o4jwfx(ano+,6g la

  A neutral atom alway2o sla:0y qf;ps has

  An atom has more electr- v mrh q ,m*;1mpl.a9or)*nvn*hxulyons than protons. The atom is

  Materials in which the electrons are bound very tightly to q0zy9r/ae/e sthe nuclei are referr/sra ez/q9ye0 ed to as

  Materials in which the elec */,nxfbc tmnvn*mi7c2+zz i*trons are bound very loosely to the nuclei and can move about freely within the material are referred tm*n ,xt nv* bn+m2 zfci/*7zcio as

  A negatively charged rod is brought near one end of an uncharged me7mv ybdno 2m,3t o8ga*tal bar. The end of the metal bar farthest from the chvyb7 dto2a 3ng8m o*,marged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutmcxjjx - sr+aml;,5m+ral. They are placed near each other on an insulated table. Sphere B is j- ,xj;ma5rs ml x+m+cbriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charg*j; (:uqkh7lfnxt3l3c 5fgb lc45ue xed rod charge an electroscope positively?

  An originally neutral electroscope k13(9vz4kdbx;h xwxdg*sc rylc ;:k4 is briefly touched with a positively charged glass rod. The elec;v l4sk g3c dxhxk :4cb1y;zx9d(r*kwtroscope

  An originally neutral elect9zv wsmz:0z(groscope is grounded briefly while a positively charged glass rod is held near it.(smz w: zvz9g0 After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate.21,0wyf mtx .kbvit7 grql ,e9 Then a negative object is brought near the electroscope, but does not 1ftg viq7 t 0kb,y2r9mle.xw, touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. -tpwt n- (7qmwA 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 forwardn t -(-pmwqw7t, 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 ck xoze7d*8oy 4tg1ga .onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancy7*c2* m.kfsxm uuxj+e d. The first charge is larger in xu2*mjuy .xfmck+7*smagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pla1fy5 fnz w6l:cwoxf b2o+a) 7bqq)f6cced near each other on an insula5zfnq6wc:1caf f b+)x f)q6l27oyobwted table. Which statement best describes the electrostatic force between them?

  Two charged objects attl.a )v/35 ncyt5 altv; r)ormuract each other with a certain force. If the charges on both objects are doubled with no change in separation, the fov ol3rat/al)5 y )cnm5urv.t ;rce between them

  Two charges are separated by a distanane01 +znpu /2+ jv0z .zedmltce d and exert mutual attractive forces of F on each other. If the charges are separated by a dt2nva++e. lz njz10p 0d/z emuistance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force l tatq .sz:+3iF. What happens to the force between them if one charge is doubled, the other charge is tripled, anl3q+t zta. s:id 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 lwodb3l (.+/tw+9jg eqz nv, iare separated by a distance of 1.0 m. What happens to the magnitude of+9ed b.j (+ll,qig 3 /vtwnozw the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. Wh*wtn+ l t6qtxx4z2 n3dat happens to the magnitude of the force on the first electron if a second electron is placed next to q*zlx2n+xtwndt t346the proton?

  An electron and a proton are separated by a distance of )0l.**;3jnd m 9e,afpk: hxygpw noeg1.0 m. What happens to the size odxefo3n 9gey.l:am k;p0p*h,) jgw*nf 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 a squ 2jv vxv(ao9p7. mnm;.uw4tyy are. 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 -Q are placed at the other three corners of the square. Wh.vyvu. m ;xp7av9 tmoynwj4 (2at 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 centroii1oq;cmte7(h /2o t mld 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 thmc i7 e2/l;hq1(tmto oe center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector?-sow3/ p* vfdaw9 qvk b22vx8i

  At twice the distance from a po2ke,u* oo0a srint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negata oat1m1x)tnvjqr -/0 mhp,8 2d lb7ulive and positiu t,0a l7a/ mpbq)1 nhm2t -vrxldjo81ve charge along the line joining the two charges?

  Is it possible to have a zero electric field v. a ,mjh4fq,dpalue between two positive charges along aqpf hjdm,.4,the line joining the two charges?

  Electric field lines near a nza .68jxp0hpsitive point charges

  The electric field sh quovxd;7 (q,aqejm:1own

  Can electric field line k4cd+6hdnez(hr 2oh6s intersect in free space?

  A solid block of metal in electrostatic equilibrium qf;,6r 6rm7pkppt9oi be 8f+d is placed in a uniform electric field. Give a statement concerning the electric field in the iffq7 o6p;r6 rpp+bd,km8et 9block's interior.

  If a solid metal sphere and a hollow meti h n/x 96z6qg :ohqam+9gx.vsal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sur9o xhxa vg. 6z /g6i9q+:nhsqmface is

  A cubic block of aluminum ,uug;2itv0bm-: vcyfra lr9;rests on a wooden table in a region where a uniform electric field is directed straight up fatvyvr ;c0:2u l;bg,mu9ri-ward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic e gsxz0 olnz:+0 r7g(jequilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic s8)m-b srgddc:phere that is grounded. As compared to the case withomrd-gcd :s8 b)ut the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrcll,8s13ka -mf:lckc ium.

State Gauss's law.

  The charge carried by one electron i3 5i(gnaw;dq)j:rk uf s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a net charge of *dg)h8m 7 giaw(p:dxgf,b; vwv4ir-k +2.00 mC. How many more protons than electro,b- dr8( w g7hfap4k)wd*:x v ivggmi;ns does this piece of plastic have?

  What is the charge o 8btyhj; pl:n .);d0jphlt* hln 1 kg of protons?

  An atomic nucleus has a charg14xn/u kgh qac.jf( ,fe 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, lgtft(qy l89 7uc(x8whave charge values of 2.0 and -4.0 mC, respectively. What is the magnitude ow7u8 9cq (yxl8tlgft (f the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the zjn9vz5iwi:0pyu gif d,oe,j 9 ( o+t1force between them is 1.0 N. What is the mag:j9tzw i 5(oif,+1nyu0z pige 9jd,ovnitude of the second charge?

  Two 1.0-C charges have a foo9w 3))ccle szj;) bwkrce between them of 1.0 N. How far apart are they?

  The force between a yi:-d ivw;qi rsb 7q5:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initialtkb6e:3mb 1tzm2eg +bly 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 electric force between tbt3 2m1b6b +zge:mk ethem?

  Three identical point charges of 2.0 mCg7k85 ihib* : vqqmpyhj4 g0,n 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 dy*kjg5: hhi4 0 q 7g,q8ibpnvmirection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.1/ q t4eomy1qv9jouz5 0 mC is placed at the u/ m15y4zovtq q1e9joorigin, -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 following positions: Q1 = ,;6k t y ngr1bdfzt9 uejr04q:2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00gjtbnyeutq4; d6fz,r :1rk09 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center o ,mjekyk/ ,e joy:/3yp.zkr: gf 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 force that acts y:g/r:je3pk.j z, o/e y, kkymon 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, 0.100(lff a6 mswi2 m); Q3 = 5.0 nC is at (0, 0). What is t 0l(fwm2s a6fihe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0w .wiqi2 cbjk1oy2gfr+)hl .3 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force ook ) 2l.ciw3ywbq.r jh+1if2gn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at t9kiotw,e gk* aq0 id pf u/w:;tm:9x1rhe vertices of an equilateral triangle which measures 30 cm *0epmagif:9 ;wok r,t1xit:9u /kqd won 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. fo( f7f+7ebff l g*hw r:sar0, At what point, on a line between the two charges, would it be pos7:, flr(hfwef* fo s+ 0gbfar7sible 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. h 3 juovysu;c1i8 smf+tb+0 e(Where on the x-axis can a third charge be placed so the cb1ue ijm(su; o03y8vsthf++ net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where dp6opc: zkpo (4 sww82can a third positive charge +q be placed so that the w6p( 4s8od2:pkp zo cwforce on it is zero?

  A copper penny has a mass of 3.0 g. A tjo;12z z yg8dgotal 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 2;yf,c.ry) gq bl2k2 o gl8bsoby the attraction of a fixed proton some distance above it. How far slb)byfo. ,2gy l2g8 k2coq ;rabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thcr f:cboe-vj:+6if3rba:: i kreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thejb i+i:akb3f-cvr e:f6or ::c angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of hbvhpld. -7. atp)3pc+40e. What is the magnitude of the electric field at a distance of 1-3p ..vap)lh 7dpcb th.0 m from the nucleus?

  What are the magnitude an cm -o(xqr4j;q :zy;jjd direction of the electric field at a distance of 1.50 m frmyx; :qzcj(j4-;rjqoom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What g) k piqudy +amz59i15zc)yv7is the magnitude of the electrickd a)95i5y+7zm)qg 1zvcpiy u field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. yg5b1jl)vs(j92 v ngxWhat is the direction of the electric fieldjvy)x 1ls9(v5jg nbg2 ?

  A 5.0-C charge is 10 m fronn2sf8brbq51 ax .yl 6m a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at th2 ab 81yrb nl65.xfqsne location of the test charge?

  Two point charges each have a value of 3.0 Cpnf cv n:)uhg/y,(3p w and are separated by a distance of 4.0 m. What is the electric field p,h(y p)3g /nc:wunvf at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofnyeqi/yy 4p h3;wci1 v)s. 2pz a meter stick and a -4.0 mC charge is placed at t)zsc;p4 yi 3w qp1yi.h/yv2en he 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is prqa;x mdqw4eswkz 4/b *( /c1ulaced 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 electricu/qz r w*4b 1/4cs xk(q;wdema field zero?

  Two point charges of +3.0 mC and -7.0 mC a*mus, i7h 6yowre placed at x = 0 and x = 0.20 m. What is the mag7y*iho m6,s wunitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a*fz1fjz nn a// square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the elanzjfn /z*1 f/ectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the coriu+h; i.b2 6 yr6mriwxners 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 the square's center?+.6 ri;iu2bw6xr mh yi

  A force of 10 N acts on a charge of 5.0 mC when it is placeu mhew)lmht 0ze :3)7l52 un aictkw,)d in a uniform electric field. What is the magnitude of this ele ):lnw,)em u) ck2eh0utiw37m 5lhzt actric field?

  A particle with a charge of 4.0 mC has a u- gk,;p.n zb/ufwp4w ;vvn /kmass 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 g is placed in is(vvqddy8yn 7f:; 6 ban electric field of 6000 N/C pointibqdis(nvv 7 d6y: f;8yng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2ln p1y1xct,k u2l. wc8e--af y.00 nC. The ball is placed inside a uniform elect - -nwe px,ufylc18l1katy2. cric 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. What *1+3 )n3s fkh;ayoqhmisqeb* is the magnitude of the electric field 5.0 cm from the s*si) 3bqef3yhkq1 h* +osm ;anphere's surface?

  A metal sphere of radius 2.-olry q dd,cd0*1y,tn0 cm carries a charge of 3.0 mC. What is the electric field ,rqond*d y,lty d-0c 16.0 cm from the center of the sphere?