State the law of conservation of electric chacs3 bo+d ys9(crge.

  Is it possible for two negative char z p/httqr+dfh;ghc8jf 1;(s*ges to attract each other?

  Is it possible for a positive and a negative charge to athvi). s; dlh9htract each other?

  A glass rod is rubbed wi wxpmj/ eyfmc:e(4,,o th a piece of silk. During the process the glass rod acquires a positive chargemw4e,me(/x,j :fycp o and the silk

  A proton carries a

  The model of the atow*w(:n6 fytgoodv7g+kb4c .u m shows a

  A neutral atom alway* w :bbp5tiu7fs has

  An atom has more electv,1,(+s 7bjevoc ey qlrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are ref8 d/*mhjo-og a/4fcxve hq l+-y/ gfb9erred to vy/o9f 8*-l-h b/+mxgjcd e g/foa 4hqas

  Materials in which the electrons are bj ukt*l inb i)xqz4ogk +;2l+9ound very loosely to the nuclei and can move about freely within the ma4 xoi+blig;nl9z+kk q) ju*2tterial are referred to as

  A negatively charged rod is brought neary: yduld)cqjc o/ 3n 0oxd-0p+ one end of an uncharged metal bar. The end of the metal bar farthest from the charcoxnd yy): p3cd0 u+o-l/ 0jqdged rod will be charged

  Sphere A carries a net positive char+7,q;lkg 23f ddtub qr)sy0j qge, 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 statem)jddk +sqg 2lb,t3u qf7r0; qyent is correct?

  How can a negatively charged rod charge an electroscope positivc81lx1orl kv:ely?

  An originally neutral electroscope is briefly touched with a positively charg 3x 6c7qcx lr7;l3cunfed c37uclxf 6 qxn7lc; r3glass rod. The electroscope

  An originally neutral electroscope is grounded brief, nq b3o29k0q xmqkh:zly while a positively charged glass rod is held near it. After3q,q:n 9 b0k kxh2qmoz the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, andd,h; e yxe )t(p sty:v7gnb68h the leaves separate. Then a negative ot( xedysv)y8be g : nh;,7ph6tbject is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutrdw ytv6/;ei2;wc8 qwral metallic ball rolls straight toward the object, but stops before it touches qw;ydr/evc2;8 tw6iw 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 the Coutwrl gkkk,:,d v) wjoe(v:m 39ca a3*clomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largeji)(8-lz u pqo5;ugmpr inz5quoji- g)mpp 8l(u; magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. -fsne28a(,fl: r e djqk-3ictThey are placed near each other on an in lr: fd8akf-2t-(,c 3jiq esensulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain for)xyew;as3pmwzwsn(5 0t kjw4+ l t2an. e7:jrce. If the charges on esl)aw:j kaxe ;(j p.w0rtz m7 +2n5nww3sy4t both objects are doubled with no change in separation, the force between them

  Two charges are separated by a1 g81e rj:k1*1nacpl idq;y ud distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distanc:q;u gn*y1cidr 1a dpe 1j18lke of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens tory h.yep ktt p 2e4+1;-lft;ct 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-t.fy21 e4t;et tpyk-hl;c +p rfourth its original value? The force is now equal to

  An electron and a proton are separated by a dis-oeo5f(n 8j :vnh aoi9tance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electfe 9 5h oo(ano-v:jni8ron?

  An electron and a proton are separated by a distance of 1.0 m. What happens q7qn25 k(-) lfwimi jpto the magnitude of the formni5k qfi7-j(w ql)2pce on the first electron if a second electron is placed next to the proton?

  An electron and a proton aree5 vxq wg9cmemg 8w 1831wfojoma+,w o)4zxb1 separated by a distance of 1.0 m. What happens to the sixw o1cq8wov4jowbw +1x ef3 em89)gm,mz5 ga1 ze of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is pladrh9xx **v kz0ced 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 mag *x9vzd*x0rhk nitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed q;w4(j ote2lkat the centroid 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. What4(e wjlot2qk ; 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 is n5pzpfgbpm2-dun 2m84 /xv ie 2ot a vector?

  At twice the distance from a point charge, the strength of th( tq6a8mk1j zhe electric field

  Is it possible to have h. q;ikysn 4)wa zero electric field value between a negative and positive charge along the line joining the two charges q4wy)iknh. ;s?

  Is it possible to have a zero electric fieldy-g s7 vtw8dj13yc2p + ac2zql value between two positive charges along t jy twzgcc3q282sa+y-vlp1 d7 he line joining the two charges?

  Electric field lines near psitive poinsorg y56f ,u.vt charges

  The electric field shownslu-pt5ca 7 d9 l:x.ow

  Can electric field lines intersectmeeev1dvhtn:e1*pg (ky :hvr +nq(: - in free space?

  A solid block of metal in electrostaticp9uh-6,wtm gf equilibrium is placed in a uniform electric field. Give a statement concerning the electric fielwh9 ,pguf m6-td in the block's interior.

  If a solid metal sphere and a hollow met 0okjzqw 9)rd;al sphere of equal diameters are each given the same charge, the electric field (E) midway between thjw; 9d r)oqk0ze center and the surface is

  A cubic block of aluminum rests on a woodenvy)x 2 v4vqqg1 table in a region where a uniform electric field is directed straight upward. What can be said concerning the chargeqv2y1vg 4xq) v on the block's top surface?

  If a conductor is in electrostatic equilibriume+ docx hr noi3m)c0:, near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grosy7 adiq74 hf2eho+x19u vm2funded. As compared to the case without the hollow sphere, the electric field at a a9x7dh1ifu 7s qfv4m2 eo2hy+point directly above the hollow sphere has

State three properties of conductors in s7sxs(zc )m-n ctatic equilibrium.

State Gauss's law.

  The charge carried by one electron ia 6 kmn5hadpb.3 ydy+3gn9 ki)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 +tq 6e 8vjgww*;2.00 mC. How many more protons than electrons does this v*ejgwtw;68 qpiece of plastic have?

  What is the charge on 1 kga6 s8 k/n; (ipnyusn tq0k6.iu of protons?

  An atomic nucleus hasb 3gu+jf(g, ez3 8m)ux4cfhas a 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 charge values utqk5;gb/ yi 5of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwquk/5 y5;g btieen them?

  A 1.0-C charge is 15 m from a second chui;1t6l2-u u fu87 g5g bilayiarge, and the force between them is 1.0 N. What is the magnit ulu;u buy2ig6-g7 a1fi5i8l tude of the second charge?

  Two 1.0-C charges have a force between thjomcx b8r/s1;5xe; hdnr4a h0t e.q.qem of 1.0 N. How far apart are they?

  The force between a n5zw dx;ok s57q3uekh ch(v,g3q6 s6u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c n)f(p ow*qiq,ckpi tkn)zzrd 3.i05*m apart, experience a 1.0-N force. If they are moved to a new separation o (qpz kirc,k )f)*tw. n0inzp*3i 5dqof 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thwp; f+c2npafkmc4. h4c xb.- xe 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 ak .+b; w-.xc2cpmhafxcp4 n4fnd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A chargebluy* -0l+s4 i yz9btexkiln83 7,aax of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 10xuxsk,ei yznb a 0 i7llab*-4lyt8+ 390 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 fo:vb/ ry3w 2c-okh /dcillowing 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 ivrdo/h3kb 2/y:cwc - is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is 8n +jcy*or2wd ;rpqxuae2 *;u placed at the center of a square, and a second point charge of -Q is placed at the upper-left cornero;xn+r* 2cdj2; rpuwauy e*q8. 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)v2*/upsh. *o1rxu tku; Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0o uh*p1s*ut 2rx/k .vu nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (ovxdtu3w xq*sj(/ 9(, ;f nkre0, 0.10 m); Q3 = 5.0 nC is at (0, 0). jt93/oqw df(,vsu ;(x kxenr* What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are bh xs 3z6abm urjow(c3sf8lt47 l6.b. placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargzrs4s.6.xlbc( 8bmtj3bh637 oa wful es?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh8oj5 7/ga*uwtw+,i vyp /b hnlat point, on ajpg5wi8 vu /+y7 t*al,wh/bno line between the two charges, would it be 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 the origin and a +9 o/mga/me46b411 s aow)tznrv .0-C charge is at x = 4.0 m. Where on the at6a wveoob1mmns 4g)/4/ zr1x-axis can a third 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. Where ca)vw8 +4e mrhhl3dd ,tpn a third positive charge +q be placed so that thrtvd+mhdp4 wl,3e8h )e force on it is zero?

  A copper penny has a ma-xv t x:+k6ydbuu1vvu()ram9ss of 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 att,qf;5dc:soor k0d mh -raction of a fixed proton some distance above it. How far above the electron is the: okh5crdd;q-s0o mf, proton?

  Two 0.20-g metal spheres are hung fzi(isb ;vstaf8z a0/p)/en+d 3( ba afrom a common point by nonconducting threads which are 30 cm long. Both are given idene(8a3iavbaif) /ztaf s z(;+s p/bn0dtical 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 the magnitude of the u(iak* j/8s . ov2j ;liusvx:gelectric fiel2xuvu*. k8lj/ sisa(i vo;jg:d at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field 4 qc99af t.kngat a distance of 1.50 m from a 50.0-nC charge anctgf9q.94k ?

  A 5.0-C charge is 10 m from a smallfw 1vxfls:7b4 test charge. What is the magnitude of the electric fields7vfwxl f4 :b1 at the location of the test charge?

  A 5.0-C charge is 10 m from a sm18ccg6xe9hwe t7: bfx(-u x:ub-eive all test charge. What is the direction of the electric field:8x:eex6- h fvbebu1 e 7i9xwc-(ctgu?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud 3y;pzz3wm g7ue of the force experienced by a 1.0 nC charge placed at the loca gy3; p7w3zmzution of the test charge?

  Two point charges each ha5edf xl50q q8pbq.p+e ve a value of 3.0 C and are separated by a distance of 4.0 m. Whadp85bee lf+0 qx p5.qqt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm j nn 0co(0g2gjmark of a meter stick and a -4.0 mC charge is placed at the 50 cmjg0 (0nn2gj oc mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of u dm5 cfadrqxu,6:g3* a meter stick and a -4.0 mC charge is placed at th u,:xmf6ag *3qc5udr de 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -ql)pmi+u o;is: y9:wv j(f 4xd7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway be9 dy)i;p:om wsfu( l:xv q4ji+tween them?

  Three 3.0 mC charges are at the three corners of a square oyz mx.xf/lau7-9o. o grn sy91f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of nyluo7 o/ -xy1mxrzag9 ..sf9the square.

  Consider a square whi6 e)fituunu,qiq 8m )fsdlh -:9 4q(ntab3 fs7ch is 1.0 m on 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 at (0, 1). What is the magnitude of the electric fiu3t7fsen :(s,q4 qu))f6iu8ltnbf m9ihda-q eld at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniforme( beu):g (lcon6:zl6w-c4.o8k i d7y pt okmo electric field. What is thezd p n8klc- ybmkow u ):(o(o6o4i.l6g7ect:e magnitude of this electric field?

  A particle with a charge of 4.0 mC has a cg k(:58 +swwql(qau6prog2 u 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 electric field ofa p5h4ixf 7;lp 6000 N/C pointing downward. What charge must be place; p7flh4a xpi5d on the ball for it to be suspended?

  A foam ball of mass 0.150 g carriesfvz cee8f )./g7rp;kn a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What f .7p8zgncefre/kv ;)are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +28oc xzw7tw-wq2+u f;q.0 mC. What is the magnitudezcwq qfwx-w 7tu2o+;8 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. rfjt, f q,/wo(ztdi.+ What is the electric fid, i+jftrf ., owztq(/eld 6.0 cm from the center of the sphere?