State the law of conservmjl9um 7 opk p5)zr*j3ation of electric charge.

  Is it possible for two kzb/ kq) 4i/hqnegative charges to attract each other?

  Is it possible for a positive and a negative charg5w k,e00(cz:m oxun) 6 iutmeve to attract each other?

  A glass rod is rubbed with a piecib +8savwk/(b r7s.fzoryj ehce+ .6q q9xr*5e of silk. During the process the glass rod acqu7(kfq8s5awb6.ocrr*r+j /iqy+vzb e h s.e9xires a positive charge and the silk

  A proton carries a

  The model of the atom sh.zke l:7)+ejdvma5g bows a

  A neutral atom always hasfkdj e jg-zu, ;d:vu5y1z i45g

  An atom has more electrons than protons. The atom +4h(l gh5 zzufis

  Materials in which the electrons are bound very tightly to the nucujjg) vnv,ofs t99r -0lei are referred t0)u-ovtgvn9,9 j s rfjo as

  Materials in which the electrons are bound very loosely to the nulqi:km7i : +rj :truf4 3rr-wljf+k0 uclei and can move about freely within the material are referre rff0:t-3 lru74 ji+k:q+ukmirlw:jr d to as

  A negatively charged rod isk 78sg9 a5lb;q4qeyj q brought near one end of an uncharged metal bar. The end of the metal bar farthest from the ch7lbs;yjgq58ke 4 qqa 9arged rod will be charged

  Sphere A carries a net posi5 x0spfih( 1d. bny;qhtive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which stateh 1s(qfn;dx 5 .ybihp0ment is correct?

  How can a negatively charged rod charge an electroscopecl1 oy z+nul5s+et +9x positively?

  An originally neutral electroscw.rln /i c8b,nope is briefly touched with a positively charged glass rod .r 8ibwl/n,nc. The electroscope

  An originally neutral electroscope is grounded briefly while s ikuyi6s6- 0la positively charged glass rod is held near it. After the glass rod is removed, the elsl6iy0 s u-k6iectroscope

  A positive object touchelzr hc* e0y 9h1z/swr 5.qsks+s a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does nez1l .kz+*rcsw q59h rshsy/0 ot touch it. What happens to the leaves?

  A large negatively charged object is placed on anjol 6urn;/(t j insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rollstnu 6orjl/j;( 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 Coulomb constzm:,; owc -hnwant $k$, which appears in Coulomb's law?

  Two charged objects are sepe x5 paq5fuxx;f7rdf0.x69cp arated by a distance d. The first charge is larger in magnitude than the sec5a0xp 5xceruqfd;x.6 xff 97 pond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed n ;ppad rtcf:7;9ai).flc/zvxt(m-p p ear each othe acpcpv);:x9 tafzlfdr- (mp ;i 7t/p.r on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cer pnk 6n/+g (bvoil7d)utain force. If the charges on both objects are doubled with no change in separation(n6 dlk /vobp7i+nug ), the force between them

  Two charges are separated by a distance d and exeik6(a p .s;zig1t 6hburt mutual attractive forces of F on each other. If the charges are separated by a diuzik 6.61gib (h;stapstance of d/3, what are the new mutual forces?

  Two charged objects attract each other with4pe4 t:b z(l5 ks mmku;wrf6;,*ghg0t/avhk f a force F. What happens to the force between them if one charge is doubled, thl5 0(apk wkk 6v/hg: brfthf, gme*;mutz 44;se 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 by a h j0,r.yhi4cpqcw 8 9gdistance of 1.0 m. What happens to the magnitude of the for 9p.cyjr qhhw84gi,c0 ce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separa7ka9 amgqaz8f4) 1tfd ted by a distance of 1.0 m. What happens to the magnitude of the force on the first electrm1afqk)4tgdzf87 aa 9 on if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 l/s m9dpv) cx1s8vzz8 m. What happens to the size of the force on the proton if the electron is moved 0.50 89p v mzsd1x8 s)lzc/vm closer to the proton?

  A point charge of +Q is placed at tf7pq j0/f/-hrg(g huohe center of 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 -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 th/0/(ugg p fro-h 7jqfhe center of the square?

  A point charge of +Q is placed at the centro(3miyxk6mm 1jid 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(1 mkyjm3x6 mi a third charge of +Q placed at one of the other vertices?

  Which of the followingo x4ug;( ak.lf :j+aox is not a vector?

  At twice the distance f4i3yv bsl7 f6i2k6 j(obh+ rhorom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value b gg)2uv7 wa/ygbvkjjj 6qd6 +,etween a negative and positive charge along the line joining the two chawb26q,g /6gk7a +jgjv)ydv ujrges?

  Is it possible to have a zero elech239 udz d: k77iejvpytric field value between two positive charges along the line h :7p 2 7zvikdj9y3eudjoining the two charges?

  Electric field lines near s4up rj cr4e32 f2jnf,esga -)psitive point charges

  The electric field show zn u5yf7b24zvlju9+qn

  Can electric field lines intersect in fzdz:+ a3n*sna ree space?

  A solid block of metal in electrostatic eqj h b26y:ll.5oi)yiki uilibrium is placed in a uniform electric)2yil: .k5hjb6i lo yi field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters areem xg;.qa 9k(c each given the same charge, the electric field (E) midway betweqx(9 k m;g.aceen the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wj.wsi9(yyx lzq :*0p uhere a uniform electric field is directed straight upward. What can be said concerning the charge.l*i xuy wj(:y9 0pqsz on the block's top surface?

  If a conductor is in electrostat )7a4n o:qp;8zsx7iu kgoj8nric equilibrium near an electric charge

  A positive point chargex+tj e7tw eg:* is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direct+ g*exejt 7:wtly above the hollow sphere has

State three properties of condmz 43leum )ky4:bsj- nuctors in static equilibrium.

State Gauss's law.

  The charge carried by one electroah0ai0 x4q2/1ultgiu : ivv0dn 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 mp9 vej7kzfsln1.)5 st29nudi any more protons than ele)ep dz9u i7 .l 15s29ntnfksjvctrons does this piece of plastic have?

  What is the charge on 1 kdaqe3xb ak83682pq) oq* rrx jg of protons?

  An atomic nucleus has a charge orh7ya x0qen la)s )ti*wc8w+k9o* ;qif $+40e$. 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 cz lg mb;k;pf72harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric mz;;lgp27 b fkforce between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwee+nnj/j;atc kx:hrq/sr *z: mcw 45d7nn them is 1.0 N.;m:j:qn /tzxd+n/jc 54hnrcw a* s7rk What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fargsr9 ,8wpp5x* fl9 .mvav:a xp apart are they?

  The force between a grczr7 if(q;)/h8lo d$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a79*me vxz dj v+)h*bur 1.0-N force. If they are moved to a new separation of 8.rj*u d9z +vhv)me 7*xb0 cm, what is the electric force between them?

  Three identical point charges of 2.0,vyc89s n3b5 2b -:gdplk fwmo 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 malv5nm fp2o: 9,8w -cskyg3dbbrk. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axirup s( z 6;* .gjbvvpz7.nehp6s. A charge of +2.0 mC is placed at the orzhr6.;bpe6s.v( pgz*nvju7p igin, -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 ar9zz(.6:hjxrs),xhfu tpnd6 ye 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 magni,jzru6x6 z.y h)s9th(d:np fxtude 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 point ch 4b kocg,br;(b-b z0qu,c3agnarge 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 thc ba3-,(zu qrobb ,;k 04bnggce 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,t5ux q6l0mi7 7*lsa-gu5zdu y 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of theiu 7ul*55 zd7gx6y ts-aumq 0l net force 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 m); Q3 = dfqvo5r( 7jq 7, v;:iy:ql*btqq ha6g5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charggt7qiv*y:;dqqqf7 b:vh 6joa lrq,(5e?

  Three identical charges of 3.0 mC are placed aqa1 azyd9 )-)ca6twrn b6px i)t the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic w db19 ax6y)-c p)6zriqa)natforce which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. Abukac/573)n; thjuk .ndwyc 9 t what point, on a line between the two charges, would it be possiuwnb;tc/h 3 j9anu 7kcy.)kd5ble 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 cg7s .onzvbit)y1b9/s harge is at x = 4.0 m. Where on the x-axis can a third charge be placed bsbovz.sg n9t 1iy)/7so the net force on it is zero?

  Charge +2q is placed at the origin and chasno2-d 5 gcl1srge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force cs-d5l 2o n1gson it is zero?

  A copper penny has a mass of 3.0 g.( nkuck* *yt65pxq b1t 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 fzkd :v (cb-n .qzotl;)orce of gravity by the attraction of a fixed proton some distance above it. How f;o( n qtvclzz :-.)kdbar above the electron is the proton?

  Two 0.20-g metal spheres are hunuflw(h3e;)hx mgq h --g from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart 3f;-h()hm ueg-qwlxh 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 magnituimcrnib ,yw:/m 3.vw 0de of the electric field at a distance of 1.0 m from the nuc rnymww.c:i 30 i/,vbmleus?

  What are the magnitude and direction of the electric ff:qwed) )oi/ fg,0 fbcield at a distance of 1.50 m from a 50.0-nC ch/)0fq,i g)wfced :ob farge?

  A 5.0-C charge is 10 m from a smaz.z /nk-: ey3bl4o3y6 okohr qll test charge. What is the magnitude of the electric field at the location of the tyozb/k3klhy.q3n4 reo 6-oz :est charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thfdi, .oj e bh. fvs+* -gubzj901yacl/e electric field?b fa 0eug+cd*1/ j -ys o9zv.hfj.lbi,

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o9j3v7jixcv89is ygtj2)k d5v f the force experienced by a 1.0 nC charge place39 tj8vvv7ijyj29 gki5xscd )d at the location of the test charge?

  Two point charges each have a valu6l38ut * 3adtgm7y*zlpo/,glc xghc ) e of 3.0 C and are separated by a distance of 4.0 m. What is the electric fimlt3ocx7/ t)l*yc *dpzg ga3 hgl,u68 eld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cfux5j(zoh0hg 1+ whg0m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the ex( ohj 1g u+5zfh0h0wglectric field at the 30 cm mark?

  A 5.0-mC charge is pzw y(a0 2fj,wplaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cy(,w2j0 w apzfm mark. At what point 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 =hxzxr7y gpyyh-;4 b+/-b3e u b 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweenhxybg ebz7- y3 x-;pu+4b hy/r them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Th j2mqkp/ n3:gge last corner is occupied by a -3.0 mC charge. Find the electric field at the: m gn3q2k/jgp center of the square.

  Consider a square which is 1.0 m o qdx2ssx j7:.),svwbyn 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 atjs:x7)q ,dbv ysw.s2x (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 it is placed in a uniform electr(v zieut 9 bm/r-09-7imfbcle;/gh ttic field. What is the magnitude of tt;9c0h9(it/7-umelrzbiebv g t /f m-his electric field?

  A particle with a charge of 4.0 mC has 7slx)5g :-rrt9+m uz(e bg(a, z;y9miaj oamaa 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 g is placed in an elqzb4vvw3vb km z*;v.cgq*j ( 2ectric field of 6000 N/C pointing downward. What charge m2v 4(qqbwgv* b;k*v. vm3zzcjust 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 dhbh9*u21a : ,epauykc xp 3+vplaced inside a uniform electric field, and is suspended against the force of gravity. What are t :p,*h+dhv uuapk a3cy29x1ebhe magnitude and direction of the electric field?

  A metal sphere of radius 10 ca/:gc.0gk x)+z sxe amm carries a charge of +2.0 mC. What is the magnitu:gz xce.g k+0)xmsa/a de of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect arj)-i*fb hv0ric field 6.0 cmrj h*-0fb)av i from the center of the sphere?