State the law of conservation of d d5w6p1ag;qj electric charge.

  Is it possible for two negative charges to attrac-pm 9i/zj cgt6t each other?

  Is it possible for a positive and a negative charge to attract each othe+p9*tobbn8y1 hmsp+ e r?

  A glass rod is rubbed with a piece of silk. During the process the glass rc 9nemh)jug3 1od acquires a posim9heu )31 njcgtive charge and the silk

  A proton carries a

  The model of the atom shows ,shhvj (b.9ama

  A neutral atom alwayeh+av2 q-(ont7 ( )iv wf ck2e/zt(wwrs has

  An atom has more electrons than protons. t qa f98h*rs+p* pgpx1The atom is

  Materials in which the electrons are bo cb5ml, 9x,uzsx- 4/athtn 5hjund very tightly to the nuclei are referred to au4-,h htm bl5xs/ a59tnx, jzcs

  Materials in which the electrons are bound very loosely t2wg7xj9aq, 0vwy3i ,. mu9qa, j dmpfbo the nuclei and can move about freely within the material are refeyq,d7a pgmw b,j9 xf3 qviuj,92aw 0m.rred to as

  A negatively charged rod is brought near one end of lx w15kk m+b,pj (cj0oxo :pr6an uncharged metal bar. The end of the metal bar farthest from the chargb(co+ x 5jo r kk:xjwp1ml6,0ped rod will be charged

  Sphere A carries a net positive charge, and sphere B is 4 d0qpnf(xaf3 lqtl29q3iur,neutral. They are placed near each other on an insulated table. Sphere B is br,lq9xpdlq3ifan q340( fr2utiefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p qoo n-8x:-z:lkk *.s n)cewtnositively?

  An originally neutral ele , ih0j,la-dgs;ue- vh4c tbd1ctroscope is briefly touched with a positively charged gla4dhe01jc, ibd ;h g--t, suavlss rod. The electroscope

  An originally neutral electroscope is grounde58ub2zt j ,veed briefly while a positively charged glass rod is held near it. eue28 5 jzv,btAfter the glass rod is removed, the electroscope

  A positive object touc90u2wv sht * ,k8k45wqht isylhes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but8yik4ss9tvl ww uhq, *t5kh 02 does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A w7dsyc(yv:; k8bw nx5 neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball r n7wbsyx y8;wc( d:kv5olls 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 the Couu++f.ev2l 6c5 jkxwiz lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fuj e y4(6 9*x ix9ftfxy,uai/ smrm-2dirst charge is larger in magniturdyist*u,f2 yxmux9xe/(i 6 -a mjf4 9de than the second charge.

  Sphere A carries a net charge and sphere B is nel.64d;4warj 2aad5y v t7azbeutral. They are placed near each other on an insulated table. Which s2ra.av7dyj 4tb;5 6az el4dwa tatement best describes the electrostatic force between them?

  Two charged objects attraytu/k pxd 2:oi/uvz:,o*d0 jsct each other with a certain force. If the charges on both o:p:dz o, sotuvx/ ykjiu/0 *d2bjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces :gu- nrw1m4ld of F on each other. If the charges are separated by a distance of d/3, what are the new mg4nl:u1r -dwmutual forces?

  Two charged objects attract each other wiv7r(34 rfc zqjth a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betwee 3vcq f4r7zr(jn 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 of 1/9s7wv g, -llvqvop ih3ppl;-.0 m. What happens to the magnitude of the force oli -97vg;lpsphwqo /vlpv3 -, n the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distah,g5 s1ygq ui0nce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is plahg05uigs1 y,q ced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ2 93j/ d5sd7tv xcdvj+x mqu+pens to the size of the force on the proton if the electron is moved 0.50 m closer to the proton?jxvdt3vp dd+7m2cq5 j9u +s/ x

  A point charge of +Q is placed at the center of a square. Whc:tckao,+ i0su m;m2aen 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, identic+a0kmao s:c, tic2mu; al 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 equilateral tq9ol 3h sw0w/eriangle. When a second charge of +Q is placed a e/lq 9who30wst 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 followinpncv tt8n+6sc(fk *5 q(vkr q7g is not a vector?

  At twice the distance from a point charge, thexj)sfp9j:a 6w strength of the electric field

  Is it possible to have a zero electric field valukx 0*3dq d:wnue between a negative and positive charge along u*dn0 w3dxq :kthe line joining the two charges?

  Is it possible to have a zero electric field value between two posihg)naykb: pic. ypwb9).;7 ljtive charges along the line jo..kb ahbipy7 y)9)jw;:nplcg ining the two charges?

  Electric field lines near psitive point cha60gozkzrx 54 ;p3y ithrges

  The electric field shown lt9 / dwtg yud+a.jf 0h(s/nw8bmf:v;

  Can electric field lines intersect in free s;qyqyvl+ xc t qp1.a8*pace?

  A solid block of metal in electrostatic eqtal nxx.f-gp86:lts- wl p3mi-hr 7e6 uilibrium is placed in a uniform electric field. Give a statement concerning lw-3 fmtplg6ae l-n7- xp6 .t:8shrixthe electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere o4zh;wvbiq*9 cnk xi;n)rk / s7f equal diameters are each given the same charge, the ele9 ;hiz4rwk *q;x/nicsb kv7n )ctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifo:4 apmrw:ws4.n vt2+ 5ziksqgrm electric field is directed straight upward. What can be said concerning the charge on the b.sa g zw2r4tvswk+m45:i:pqnlock's top surface?

  If a conductor is in electrostatic equilirg)s1iv- rr e95/rnf6v31vni dp 9ishbrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundeguq uax2. bg 0an)9o32 meqv4od. Asoqx 4 umovq23abnag)2e.gu09 compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors 4qlj qkea0+d307r ) zlze eoy)in static equilibrium.

State Gauss's law.

  The charge carried by one g36cje 44hb z 4le1eeuelectron 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 more protons kh.)-d36xl lve6odr( efn a 4ethan electrons does this piehrd.o- k34fv el( 6xan le)6dece of plastic have?

  What is the charge on 1 k uju+62sid5uvg of protons?

  An atomic nucleus has ayz3+etv2 .rn u-i- z 2mnjbao9 charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatgv-cgt 44mfc) qj il.,ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the elf 4t ci-q,ljc4 .g)gvmectric force between them?

  A 1.0-C charge is 15 m from a second charge, and thed )of.x xd(z7n6b 27n lj.vpww force between them is 1.0 N. What is the magnitude of tx.jzwbn)n( 2loxf7w 7.vpdd 6he second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thehv), 8 a9wc(wb/gxdayy?

  The force between a 4r+psy 4 xra y*9:kiw5rutb ;vprt6d.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia4:by0 xs t . qhhfux((*e jx13.omlcsvlly 2.0 cm apart, experience a 1.0-N force. If they are moved soy(fx:q3 eh.xctm0j.(l*s4 bxu v 1h to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges oe 4p4tsla:9. gct- ugaf 2.0 mC 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 direction of the electrostatic force which acts on the chargs :tuggc-e4tpaa. l49e at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pla rcs /;).mdnnj z90aryced 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 magnitu)9a jn /rc0yszm;nd .rde and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges ,e(.z)4 ft+ bfz y 75zaae7elas 7 ndi23xysusare located 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 = -1.00 m. What is the magnituz e n l7( aa)ye7yff 742 sbt35z,a+iusz.esxdde of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and ;qas*0t6w;c() gdw0 fommj q fa 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 centerw) ;0(qt;*om j f fg6acsdqw0m. 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, +: l xzk)q2r*4o7ei evu+snp v0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chareeu7nv ko+z+iv:)pxrqs2*4l ge?

  Q1 = 6.0 nC is at (0.30 m, 0sh8:nkj8liy z 6)lx4g); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force oih8)s:zlj6yg lnk 8x 4n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilad9 ;3-oa+igdc:i)swoy ae6zeteral triangle which measures 30 cm on a side. +;eysdo9: i ogdwca3za )6ie-What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whia l1l( k8c; ff02ohp ypmvs0bwt:7t e-ch 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 teb0 :sv tclpf1-;wh(8 ya2lm tk7p0of he 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 = j b(me 9hop(wrfk 6p 5x9s7hz+ af6wh24.0 m. Where on the x-axis can a third charge be placed so the netfjheh66w27p(p +5 h9 sxkwmr 9f oba(z force on it is zero?

  Charge +2q is placed at the or/n;kka91fwen0wr; 8o.pz y zjigin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onpznw0kew ynfkj/9r18;z.a o ; it is zero?

  A copper penny has a mass ofq z hny3cl,rf90* lt*m 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 against the force of gravity by the attraction o gsgy3ad;mc3 d7hc .slzd dl9*2p0ojw)m * v3tf a fixed proton some distance above it. How far abovlp .yv9m*c 3j0t*amsh c ogl3;gd2zs37 ddd)we the electron is the proton?

  Two 0.20-g metal spheres are hha*)d+rnr rkf l(c5t1fh,k 2ssfj )m8ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until than8r)+2(5 *r lhf1fkj ,hkmst )crfdse angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whaj6 0w2a0aokbeb/x21fymhf+:dmsl 8t t is the magnitude of the electric fielaft1j+0:o 2b 2fmxs6dwa8/m yeb kl0hd at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1jik3ad4c c87p.50 m from a 50.k3cjdc pa4i87 0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the m2di,o6t l s* ryne0w:cagnitude of the electric fid*oc:6r 0 e2w isylnt,eld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charg,y*do :.j3:rsotzoperw9 b8g ,t d3 sle. What is the direction of the el:dp9z,e oytr tdr gblso:* 8s3,w.3ojectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of.-nz0s+y kihhpgmf.e6w5, 3n wf / t4+ogaznd the force experienced by a 1.0 nC charge placed at thenktf..g,n s50w adwehp/ +-zo fhmi4n3y +z6g location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by fxil czv5: lj(wlq5*7a distance of 4.0 m. What is the electric field at a point midway between the tw*l iql(lwx vf:zc75j 5o charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and ae; f(trc ra4(-j9g5 nrc g ldth*2zf;j -4.0 mC charge is placed at the 50 cm mark. What is the electric field at z* t(f;2f9c( -g;5aj ecdrn l4r jrhtgthe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.04ehtyq9v kec 2h2n 3h/ mC charge is placed at the 50 cm mark. At what point on a line joining the two chargeyhvhe3 qe29 t42/hcn ks is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are place;xjhj.hbb)t k 7j 2 i+phuez93d at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point m huj;79+t j 3hxib) kej2hpz.bidway between them?

  Three 3.0 mC charges are at the three corners of gad(s3xkqah 4,t n2n 2 u25qt,xaz)y ua square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. 2 tu az,)xxna3g2nkd( h syq5t,24 aqu Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at ths hzuj ynk6p*r9x38emt f;. 8ie 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 t.z8ny meh8*sx369f tikjru p;he electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plahv1t;e r:u l/oced in a uniform electric filv;oe1/utrh : eld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mav2h-nufwu, 4z ss 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 iq od/7 owzbf65s placed in an electric field of 6000 N/C pointing downward. What chargodfb 7qo6/ w5ze must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pla,qto;ar*dg wx1 *(*z/j dxqf oced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction ofrqq* jdxzodwf/(* ;g, a* o1xt the electric field?

  A metal sphere of radius 10 cm carx86gqszeoh4l/ z 7+x aries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cxq4/g6+s87e zlxoa z hm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect+wd; plalxq 4 s7a*.e(0cf uylric field 6.0 cm from the center of the slx;7*wpc 0 dl e.uql4ysaf( a+phere?