State the law of conservation of electric chargeaz8uul u b7:a5.

  Is it possible for two negativeo u 56dedax,g- charges to attract each other?

  Is it possible for a positive and a negativeu,ids-:aq d y: *foqjq7c59ex charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glaia3g lyq ( (x,h23n7uu(i(bf fdzej- ass rod acquirn(y,ib3edhxafl 7 i -2(fz((jgua3uq es a positive charge and the silk

  A proton carries a

  The model of the ato37sj y)o:f,ukuoi -w/5 al gavm shows a

  A neutral atom alway78k:-;t us-):ycpwkes as i/r xf;p ggs has

  An atom has more electrons than protons.a).jhil u fdxb w67i(7( ofs(l The atom is

  Materials in which the electrons a xw wtg ao j7/gda;t/9q;vp)p;re bound very tightly to the nuclei are referred t7 gx ad/j;g);p tw/qo9pva;t wo as

  Materials in which the electrons are bound very loosely to the nuclei and can c za2 shx;km+7 715ak (/fuz ff0tyzizmove (ku +7ctazxz;/zf2z yim f5a017kfs habout freely within the material are referred to as

  A negatively charged rod is brought near one end of an uae:m-9 w*0x;y ra oqffncharged metal bar. The end of the m* fa;m9ow qea y-rxf:0etal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is eh,ixz +4wf8 o zxlrbdvi5/2e; x(vk, neutral. They are placed near each other on an insulated table. Sphere B is briefly dhkx vf;,(v + ,/oexzwb r4zei82xil5touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged j w,er,ntlb7y)jmu0 (ow t2:qrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charo,zfa: v. h w:vcw3ei9ged glass r:.f9cei , vva3zw owh:od. The electroscope

  An originally neutral electroscope is grounded briefly while a positv )hk 39lw-w3mrczcx .ively charged c z9.x)vmhw33k- w rclglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave//fp06 awl.5,eak ezy h1itdys separate. Then a neaypde6t z. 1wy/f0le hia k/,5gative 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 insu-jde36amth z9n lni16 7wu *azlated table. A neutral metallic ball rolls straight toward the object, but stops beforej9z 7l3*u1-ize6 at6am hnn wd 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 okgxi56zt,x - od /+pkgk5d:-c7cw kmh f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dj0;ceo bs q0j fzva:*rf1zekn6lk+69 . The first charge is larger iz9;66 ja+:fklcnervo q0j 1s be f*0kzn magnitude than the second charge.

  Sphere A carries a net charge and poich h9l0hc v.6, wt/sphere B is neutral. They are placed near each other on an insulated table. Which statement best descrih h,l 9hwo c/60.pivctbes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I 9q/k:xeqdlfo v3z5c.f the charges on both objects are doubled with no change in sepao:5q/ld.f9 eq 3kzv cxration, the force between them

  Two charges are separated by a distance d and exertl/gi d:4t:azvw ntq)f)*x cx+ mutual attractive forces of F on each other. If the cgqz+ta:*lv:xci4 ) tx/wn )dfharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each otk2 xmyr ngkpn z0)wl+7g.5s7pher with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fo nws.lrmy7 x 2kzpn)5g70+ kpgurth its original value? The force is now equal to

  An electron and a proton are separated by a distance o*/ e7*4 jhpp tfkp00c,uskqfd f 1.0 m. What happens to the magnitude of the force on the proton if a seconde40fksq , p*0*tp ch dj7u/pkf electron is placed next to the first electron?

  An electron and a proton areer8-r* hcju( exq*l8 t separated by a distance of 1.0 m. What happens to the magnite*(l*-j hrceqx8 8truude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separa,k ao0lqu/yec65 co*ck eyd +)ted by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the prcu,5/ eye ok*ydlacoq0ck)+ 6oton?

  A point charge of +Q is pl lsg9 5//-z j7vatmeneaced at the 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 electrostat5g7amelt/es /z j-n9 vic force acting on the positive charge at the center of the square?

  A point charge of +Q is pla:;;.xkez hfi*d 3p0qnrb n;wiced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of th:;w b3; edfpkir0z n.iq*;hxne 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 is2+h vk.n0mhaabl e9 f+x ui4 exfwx)36 not a vector?

  At twice the distance from a point charge, the strengt-qb1jy g f8x,ah of the electric field

  Is it possible to have a zern;0 zx7kvgj/ hai) .yjzj+rf:o electric field value between a negative and positive z vry0x :;fjjk j/7)gi.+nzh acharge along the line joining the two charges?

  Is it possible to have a zero electric field value bety7bq5*ca .;l :w) 3i gvlozeqkween two positive charges along the line joining the t yq3eba.)7zqlc w *vk ;5g:ilowo charges?

  Electric field lines near psitive point q1tw88f zp yhs0+1 vmhcharges

  The electric field shown):7et+xp znb j4p2u+cvj7e a *0qek dk

  Can electric field lines intersehyuu d,f:o d);edgbvkl 7x/ 45ct in free space?

  A solid block of metal in electrostatic e zya n,2:,h/ dyg/eckjquilibrium is placed in a uniform electric field. Give a statement concerning the electric field in thehadyyjez ,2/: gc,n/k block's interior.

  If a solid metal sphere and a hollozp p3ox/t+fip/f -fxz r1 2nw9w metal sphere of equal diameters are each given the same charge, thezoxf1x/i/-wr t2 z 3p pf+p9fn electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in pkh99kahy du6bt+0e ph :.2aua region where a uniform electric field is directed straight upward. What cahue a2a +hk.dt 9k6u0p:yhb 9pn be said concerning the charge on the block's top surface?

  If a conductor is in electrosta ek4z-ll 4x/ k+ohf1fts2rk8 /tiahir-7j:cttic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow mk8:+ffotop0f4j( quw etallic sphere that is grounded. As compared to the case without the 8wp :k(f q+fofu 0toj4hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in st q5d apt/2-cwyatic equilibrium.

State Gauss's law.

  The charge carried byf / klda+;k kel(h-kd -jw-sd* one 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 charer(bdyuo;v/ n0 0r a2wge of +2.00 mC. How many more protons than electronsd eoua;r0bvw/0( ryn2 does this piece of plastic have?

  What is the charge on 1 kg of protxv/y1facr0; 77zgcofu h,v.sons?

  An atomic nucleus has a 4ikszx5o y46mz:8 lxe charge 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, have cha z ctfioe*3wdp e1z192rge values of 2.0 and -4.0 mC, respectively. What is t ozpc*1 etfed391zwi 2he magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them isyl0gzne;z8 rie):n 6r 1.0 N. What is th0 8 nzygr) :en;e6rilze magnitude of the second charge?

  Two 1.0-C charges have a;),.c2jfo jvkcbt p 5o/)psoy force between them of 1.0 N. How far apart are they?

  The force between a j 7tqup)/rsj5$30 \; mC$ 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 force. )o 5fp.y ,cfho If they are moved to a new separat5hf, f.poo) cyion of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed onv3iq 8w tp;x0v 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 on8; tvv0x3ip wq the charge at the origin?

  Three point charges are placj9e/vtnvvc3 c4 4st*aed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x9nt4j a*vc/4 vsvce3t = 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 fol ijze )6cxi3i.lowing 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 magc )3i. ix6ziejnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at 2qdcn6: rt/ ,bi 5keopthe center of 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 on the c ndikc e/tqrp:2 ,bo65enter charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30-mq;7bqqc0 g y iqiz-m.d7c8z m, 0); 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 forc-bd z m q.yi7;g8mq70qcc qiz-e on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); eh6r r5+ 2hz c8lz7bluQ2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction7 h62eczlr5 h8lr zbu+ of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of a;cfj)+ nsup ;zn equilateral triangle which measures 30 cm on a side. What is the magnpu;;fj n z)+scitude of the electrostatic force which acts on any one of the charges?

  Consider point chargesb v/0if ixq:ii48 a j +me,bt2o0oq5xo)+wsxh of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it beqxitoeaiq,+b 45 wvhobii:/x+ 0 8mo0 xjf)2s possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at th f hcssm f*k/auiy26(p-y v).ee origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis cav2-.6aymh kes*)sc/ yffu(p i n a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -s3) y+bnr+cja/fu +hq q is placed at x = 2a. Where can a aquh3 )++cr +jbsny/f third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 qnpji33,v nm-x3w :npg. 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 attr+5cv(:.c; k elre xpgbw5pb5 laction of a fixed proton some distance above it. How far above the electroncc l:le(rv5+e;b5 bxg pk pw5. is the proton?

  Two 0.20-g metal spheres are hung from g ma-(-sry ;y0 qvt*yea common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tryyvty;mg(s -qae- *0 he angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. 2a2tt 4qn2wqmWhat is the magnitude of the electric fq qt2a 4w2tn2mield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di01 ydrg f)xl.zstance of 1.50 0g1dx.)z yl rfm from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magq:p,eqjs4t wm3s-pqvnt 299 rnitude of the electric f4qvqp9t p3:sme- 29 r,sjtn qwield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test cldh 2h/0j ync1lqyf.g0k0 oe*2 ald7j harge. What is the direction of the ecfyjo1 d2kla/ .jy0g*qh 0lh2ldn 0e7lectric field?

  A 5.0-C charge is 10 m from a small telt 9kiwcm5 9 e7.tnj)cst charge. What is the magnitude of the force experienced by a 1.0t.kewm9l9 i5)n c c7tj nC charge placed at the location of the test charge?

  Two point charges ea+ fd; l(h bm9wr delm)ul-z7:gch have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway bwu he- md :ld)gzlfm9(r 7;bl+etween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a4n 6 trf1bimsd;+)woc meter stick and a -4.0 mC charge is placed at the 50 1roci)ms;+tb f64 dwncm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 c1 .dxq -d/ncmpvefac ay9;(2f 0c/dg 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 j1q2f-xcc ed .9/fp ncy ;daa/0m(gdcvoining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. (gm o ls*j f8;4g,lh;uwnnew( What is the magnitude of the electric field at the point mwnj ws ,ggfo 8m(lle; nu4h;(*idway between them?

  Three 3.0 mC charges are at ; oia*f84xh93o 9chxp p5xwg uthe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sqg 9 p;h fx3i*u48 cahwox5o9xpuare.

  Consider a square which is 1.0 m on a side. Chargpgia k0b-251)k sy dlbes 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 t1 p asy0kg)bib 5kd-l2he magnitude of the electric field at the square's center?

  A force of 10 N acts on a chargmvip a+olqzi( ft r- ,3ui+z:/e of 5.0 mC when it is placed in a uniform electric field. What is the magnitu+ ur: zop- l( a/tmif,+qvizi3de of this electric field?

  A particle with a charge of 4.0 mC has a mass ofrxq76gm4 2z.9n u bzwz $5.0 \times 10^{-3} \; kg$. 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 electric fieq ct71pf(g/ kfv9-creld of 6000 N/C pointing downward. What chargqt gc (ve9p/-rfck 1f7e 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 p5/- y metpo+3yo:5fwke s j+kllaced inside a uniform electric field, and is suspended againssjy: t e+f-mkp le5+yk/owo35t 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 is the magnc:cc/adlq t 73itude of the electric fieldq:t/d lc ac3c7 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What i u u;yod mtb0:-i8sc5gs the electric field 6.0 cm ig m d 0cysuobu5t-;:8from the center of the sphere?