State the law of conservation of elec p/qca gx a hur*(nm,s,73+ehrtric charge.

  Is it possible for two negative charb/ci)v 5 cqx7kges to attract each other?

  Is it possible for a positive and a negative charge to attql iws,g/ ,:nzract each other?

  A glass rod is rubbed with a piece of silk. During tywawt55 cupd:3c i j.po- 3q+leom59uhe process the glass rod acquiruewp-wa pc u3y5 9:doq tl. o5j+mi5c3es a positive charge and the silk

  A proton carries a

  The model of the atom c2yu;l d.sqdsg5 zj)p t2 m4sw)ux5. ushows a

  A neutral atom alway1-hxn0g(*.un y uyenvs has

  An atom has more electrons than protons. The aqk7:fzy5w 9 ,ect7r eptom is

  Materials in which the electrons are boutmckwl.+ 3.gc nd very tightly to the nuclei are referred to 3t .c+.lcmgkwas

  Materials in which the electrons r5p) ) nqdqqc5are bound very loosely to the nuclei and can move about freely n 5qdq5 rq)pc)within the material are referred to as

  A negatively charged rod is ,ssovkjt8-,d0 n4ts b brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged ro 40tsjov,,t dbns-s k8d will be charged

  Sphere A carries a net d3vj s-vsrww-0,+s vo positive 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 statement is correctr+d,jw3 wsvvv 0ss--o?

  How can a negatively charged rod charge an electroscope pod+k.91xq )itoc yli5ositively?

  An originally neutral electroscope is briefly touched with a positively chw m 37btfaax/q/:5fqo arged glass rod. The electrosc 7/aft 3bmx woq5a/:fqope

  An originally neutral electroscope is grounded briefly whil:v;rr0pt si bmygteu1.7-- hve a positively charged glv0urb-m1: y t-rev thp7 gs;.iass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves ssqc 5 d x9(mlqb9-vaq+8:gomqeparate. Then a9ml v9m(sd+qqxc g o-q5a bq8: negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged on c8dy ciw,s*kewj3)3h. ts/object is placed on an insulated table. A 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, ann/yct ,ww8ss de k*ijh3co) 3.d 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 con icvjvil155b ) 6z a blykxb8(.fdcv25stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isc/jutm2j e09x larger in magnitude than the secone 9u/ 2jc0txjmd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed;7:+)stp3bolrn v t bk near each other on an insulatedl3 op)bv snt;r+bt7 k: table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eackksr5sk/4/d kh other with a certain force. If the charges on both objects are doubled wi /k/kk 54ksdrsth no change in separation, the force between them

  Two charges are separated by a distance e4tl 9 kw*utci-yo43,ctddem+n 4+ged and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/n,w+doec94c-i el u3k4* y tgde4t+tm 3, what are the new mutual forces?

  Two charged objects attract each other with a fors;78 ug3ry4y f ,ew4j8h )v uce3uqreoce F. What happens to the force between them if one charge is doubled,vu8e8 u3;s u y)h74f, reqcygowr34ej the 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 aebx5 +hsqc,, mru*clw5-rt .ore separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if c-rtq,5,5b lcw*.rusemxo+ h a second electron is placed next to the first electron?

  An electron and a proton arecya.c 85e*0+pu*jc g gh yehg0 separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the protg+* 0eug pcyc aj0y*5h.gch8eon?

  An electron and a proton are separated by a distance of ug-+ie1zd1 rnm p8/ql1qc; yd1.0 m. What happens to the size of thelz-q 1 q/pnydrgimcd81+u ;1e 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 square. v/9xmtjrb.tr7qy l /8 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 q.8lj9 mvtbr7/x r /tythe 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 1rcb+ (3fxwxoat the centroid of an equilateral triangle. When a second charge of +Q is placowfr 3+1 c(xxbed 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 a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vecto wb ; 5.gdfxj2i3uv)gtr?

  At twice the distance from t02olnj99doa a point charge, the strength of the electric field

  Is it possible to have a zero electric fieq d ga*le43t*w-/ qtqvld value between a negative and positiqqwt*/ g43a - ve*dltqve charge along the line joining the two charges?

  Is it possible to have k)2ohdv1z pf, a zero electric field value between two positive charges along the line joinin1o2 dhvk,)zfp g the two charges?

  Electric field lines near psitive point cdu, -cfji0xs -harges

  The electric field shown 2 ten)y;v v.xi

  Can electric field lines interqs- ; 85)(tgqzsln5ao pp,a,lefv) dusect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electl kuyg3 6l.24flpfo .oric field. Give a statement con. lu6gp3ky.f o4lo2lfcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters ar.ju; 21eoeu k nerzk(+e each given the same charge, the electric field (E) midway between the center and ;er(j2.n 1k e+uoekz uthe surface is

  A cubic block of alumin1y,vajtebni5 psm2j4u3vp 03um rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning th vpu0 tv 4m3se,3 ni25ajby1pje charge on the block's top surface?

  If a conductor is in electrostatic equilibr roe02obfbt:.ium near an electric charge

  A positive point chau4zzgt m3q .gh/cns.p hi07z /rge 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 directly above mh/7 0ut4 sn.zhgqp zc g/iz.3the hollow sphere has

State three properties ofp.nqn0nwm (qcs6 3 6rp conductors in static equilibrium.

State Gauss's law.

  The charge carried by o10gc ju(hc,xy ne 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 charge of +2.00 mC. How many moj9k3b7 j; k :x,osfzz 2uk+dwsre protons than electrons dbxw j f,j2;kz7 d3+kksuz:so9oes this piece of plastic have?

  What is the charge on 1 kg of prq; f2 nmq9r-z1ega er p81hax*otons?

  An atomic nucleus has a charge of u+ybh(xt*b6ly3 umn* $+40e$. 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 of 2.0 and -4.7ho 5.wfh*sx p0 mC, respectivew sh75 hf.*opxly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,2cvd8pkwagch0l8mlkt 57 *; j and the force between them is 1.0 N. What is the akcdwj l8mlp 8 vhkt705c;2*gmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa 8)vso(woc 9l c3l6wovrt are they?

  The force between a 0rv69;q5r ij hw ndp6y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, ini3/- qjuloq/ s h imvt( xj11u,-rswsl1tially 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 forcl hjtlxsisvmqju /wo311q(/- , - s1rue between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firr. evaj4m-: tsh2 jxsu9/k, no4 wha2jst charge is at the origin, the second to the right at x = 50 cm, anr9xj 42vs2/,eu:shwa j m. -aohjk4 tnd the third is 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 placed on the x-an9g(f9vsi- b5o+mxd kbq - r2lxis. A charge 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 100 cm mar mln-bfqixs bk-9d5+vo9(2r g k. 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 a0sh l;fzq en /y3w.l.= 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 magnitude lyq.3w0 h/lsafz;n.e of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a secoroa t5 lrv1mdu2o0)a,nd point charge of -Q is placed at the upper-left corner. It isr52d uv,aorol a 01mt) 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, 0i/)b4vs *hdjeeqj * 1om*tf7:zaf2go.10 m); Q3 = 5.0 nC is at (0, 0). W4fh )*j 7 e :*iatbeo/dsmo1jqfz v2*ghat is the magnitude of the 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 = 5.0 nwvr4zivc(nzkd;z j l+) e*;u3C is at (0, 0). What is the direction of the net force on the 5+zwizcdvz(n k; )u*l;4rej 3v.0 nC charge?

  Three identical charges of 3.0 mC are placed at the veva9g-4wzc r -zfpp( -1dnxk f(y5 ey9le:a:d urtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one 9yz1:(f5k- e9faxr: (lvpad zyunegd-pw c4 -of the charges?

  Consider point chargest8g0 c5)cpp nak5k hg* of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chargp 0haktg*c5)8k 5g cpne 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 = 3 v k99+ztijan/ y/phf(px5i i4.0 m. Where on the x-axis i(9pp tjyah fz5kix//9i 3vn +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. Where7 q4)hu2rnxkjp8z,v h can a third positive charge +q be placed so that the force on it is ze7k4hnqp 2vrx)u8 h jz,ro?

  A copper penny has a mass of 3.2v70hu mcbm5q0 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 grafxo pr 1xu*g6)vity by the attraction of a fixed proton some distance above it. How far above the ele6ox*fp x 1gr)uctron is the proton?

  Two 0.20-g metal spheres are hjw57i x5m5 5 udu)fcsv(;qcfz ung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and5jxq5 ff5;zm 7cvwui(5ucs) d 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 x: 0v3qc:p6s z4ewuzvof +40e. What is the magnitude of the electric field at a distance of 1.0 m from the :upz z0wq3:vev6 4cxsnucleus?

  What are the magnitude and direction of the electric field at a distance of:8b6kw jnl)w j 1.50 m from a 50.0-nC chal8wj wjb:n k)6rge?

  A 5.0-C charge is 10 m from a small test charge. What is the magno vls*. ;n/b e6l0 ,3xaodgcwhitude of the electric field at the location of hd6s.x l oevn lc*0/,;abog3wthe test charge?

  A 5.0-C charge is 10 m from a small tesvw/kvsvk4/yp; ;9 m z lqf5wh8t charge. What is the direction of the eleckp//f4mqz yl ;vw8 5shv9v;wktric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of theenrinpdh 4aast2t (; 8vp6q-* force experienced by a 1.0 nC charge placed at the locatioa2 d6h n*;tnre( qvtps4-i8apn of the test charge?

  Two point charges each have a va+98bktld b 0g/bsi(dhx c32 wblue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges 3k/b h9s8 bbclxgd t2bi+dw(0?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sti5ozmp t( l8qity6-n-mq: of;k 9k nt30:alse qck and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?:t8 3l:mtnzskqoqim ef95-k0l qp na t ;6(oy-

  A 5.0-mC charge is placed at the 02 1q6kn/rbvhm cm mark of a meter stick and a -4.0 mC charge is placed at the 50 rkn/h2qm 16bvcm 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.y;ys z10( re.ts cia)t0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point s; .azt )(0yestcy1irmidway between them?

  Three 3.0 mC charges are at the three; 9nuji.6ogj gph9ah 2 corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electricj6 9jngp .hohagi9u2 ; field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plaj2ddpff9n+7pahj ao2)3 hl9 je- p,qlced 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, eaj,9dda+2h qfopp -h7 9)nllf32pjj0); -3.0 mC at (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/ -nd.-ti,zo pzaotw4 it is placed in a uniform electric field. What is the magnitude of 4-, oia- zztd.o pn/twthis electric field?

  A particle with a charge of 4.0 mC has a mass 2nw5 z-qz,fc4wd7s agof $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g ixcs/z;zb pm mv,kz)u mo o* -,)g5ic;qs placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspenc oz z/ )xkmb,u;m,mps)iq *ocg-z;v5ded?

  A foam ball of mass 0.94.o,k,oo4xu ukiqo xc v/t( c150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the e,kc qx(c,9k v4 i/ .otu4xouoolectric field?

  A metal sphere of radius 10 cm carries a chaq(.1jlvr: ojw rge of +2.0 mC. What is the magnitude of the electric field .v( :qlr1wjoj5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCx psicn)(qyx./p) ; i fa0fl5/ywe*d kf/rr0e. What is the electric field 6.0 cm from the center of the sph0d;5x*ec(f0pixl ya qr) yie )k. r fp/f//wsnere?