State the law of conservation of ek6 uiqwxa8k/: lectric charge.

  Is it possible for tw ws dktq;bc -ki9.-;xxo negative charges to attract each other?

  Is it possible for a positu2xvgp79b i*: :y(u7p jcry+hf)icdx ive and a negative charge to attract each other?

  A glass rod is rubbed with a pieceoi,y4jhitr 7+) 7nnnx of silk. During the process the glass rod acquires it)+rnyo74i,x7jn hn a positive charge and the silk

  A proton carries a

  The model of the atoms5qkgoe6* 5qh shows a

  A neutral atom always hl m0 .wo *9ues9v(tnoxas

  An atom has more elecgfdq4su 0y77ow 6) kwlliq dv92e;b *fd6swu ;trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei egq+ *rt :ftw mb75:de/d4di rare referred to rq4e7fgtdd:r m/*dwet b 5:i +as

  Materials in which the electrons are bound very loosely to the nucl487e1 :gcwxy 7hlc fpqei and can move about freely within the material 7 h cx4p qg8:el1w7yfcare referred to as

  A negatively charged rod isd5+l7ap kua n, brought near one end of an uncharged metal bar. The end of the7,auklnp5+ da metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are bc7meh.923nfy rudu3 8hw/xj placed nea cnw/xd3u2 j798. ebmhfur3hyr each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negativelya1fb.n r6 ty)cq (g+ll charged rod charge an electroscope positively?

  An originally neutral electroscope fz93lxsa*g a/quk( ,q is briefly touched with a positively charged glass rod. The elecfa,u/ 9gq laqs z(3xk*troscope

  An originally neutral electroscope is grounded m5soro) mvv e(c(r i7g/3+efu i fu+/gbriefly while a positively charged glass rod is held near it. After the glass rod is removed, the3c/m7)fegu/ muir+svov e( + i5g(fro electroscope

  A positive object touches a neutrqmvuc x--q* cu:+ .wncal electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to t *mwnx.c qvq u:-+ccu-he leaves?

  A large negatively charged object isf9-kd8dtes(mzj s:)vu,0 ffg placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. kd: ugfdt8m9zef 0(s v,j- sf)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 t/a,yq56x/ qu *w rltiih1zb6ndl e20the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are s2o; ;axzrhg5 s.o:soaeparated by a distance d. The first charge is larger in magnitude than ;zoga:x5 os.rs;ao2h the second charge.

  Sphere A carries a net charge hf0 -8wcf8f:r1e1+l mnvx3a )jocbvo and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descf n)bw1hlj1ov+:rc a3 ox8ev fcm0-f8ribes the electrostatic force between them?

  Two charged objects attract each v slykvr,fe5cavn31e8)m) js5 i p :4yother with a certain force. If the charges on both objects are doubled with no change in separation, the5r85)4p i)menv,f3y1 vkajy evls :cs force between them

  Two charges are separated by a distance d and exert (o0xza6- s odsmutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are t xs o6(-ds0aozhe new mutual forces?

  Two charged objects attract each v7t i2kyorcz 8)4qeknk/,a8 pother with a force F. What happens to the force between them if one charge is doubled, the other charge is tripledqt/8) czk8kkp7 vn2,4ay eoir, 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 distance of 1.0 m. What haut -e4dm*e+m 2e4 gfc 6q8imabt za,z,ppens to the magnitude of the force on the proton if e btci+,4*t2az8,g4demu6 m -ezmafq a second electron is placed next to the first electron?

  An electron and a protoa x7a682msukmzs c0()6e lunrn are separated by a distance of 1.0 m. What happens to the magnitude of a rlsu(6nm2u e08k 6za)xcs 7mthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by imma;a ye ,1vbr r/*8xp/ 0dkka distance of 1.0 m. What happens to the size of tv; k b/*yap/1 08airm,mde rkxhe 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. When a second point 9dnnl3x7j z6xdw) -qe charge3dxj ) xd7nlz-n q9e6w 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 the center of the square?

  A point charge of +Q is placed at the centroid of; gmdn;kb*vo2ebb0 3m an equilateral triangle. When a second charge of 3o d*;2b vbe0k;gmbmn +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 a third charge of +Q placed at one of the other vertices?

  Which of the following is noc t 9fta+f 7;jtfl0no2t a vector?

  At twice the distance from a point charge, the strength of tvp 1(pd lyl-0;6 klrsuhe electric field

  Is it possible to have a zero electric field value between a negative and*+g) +c me.b5qehlle d positive charge along the line joql ehg+e)m+5*cbld . eining the two charges?

  Is it possible to have a zero electric field value between two positive-u8 ke hu)/whr4 /y b*gz,rvlyli /3ei charges along the line joining the two cywrle4*l)3/, i//ekbi zhhu v yg8-ruharges?

  Electric field lines near psitive pointdu0 k,huqm4 7p charges

  The electric field shoq : wime 6s1n :o8epp3msp287xw,caugwn

  Can electric field lkd,2th fl: n/zines intersect in free space?

  A solid block of metal in j0 ccxwck(*4r 0f,zdlelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field ic (40c*crfjl,k 0xzdwn the block's interior.

  If a solid metal sphere and a(0kr( dnllj t7 hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between thtr0dl 7k((jlne center and the surface is

  A cubic block of aluminum rests on a woodq: wzsm/0,k(kv* w pxwen table in a region where a uniform electric field is directed straight wx wvz: wsk/, qk0*(pmupward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrp1;y-cb d n; ct(1ynxgic charge

  A positive point charge is enclosed in a o)h6ay9:jtygh8 no 0k hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the eyk hnho 80:tyo96ja)glectric field at a point directly above the hollow sphere has

State three properties of conductors in staticxcfwrxi d, 8)g18qly7 equilibrium.

State Gauss's law.

  The charge carried by onhr p ;zo8jyo-ussc-20 e 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 m l(cbsjj-eq6oc10f i0 C. How many more protons than electrons does this piece of plasticelj ci jf6-bcsq0( 0o1 have?

  What is the charge on 1 kg of protonspgjdpdt b35m-kf::p / ,wukj 4?

  An atomic nucleus has a ch 8vr6zl (q brig,py66parge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separateb 4 wzfg0 f 38d)*kemx)bzk3pad by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themfz x 8p0e4 b3)k kbf)*a3dzgwm?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 8..thbw 8tquyN. What is the ma.8qb. wyt uh8tgnitude of the second charge?

  Two 1.0-C charges have a force *yrbk):2o6uy5 hsxqe between them of 1.0 N. How far apart are they?

  The force between a 9 2so,nb l1unf51 gfmr$30 \; mC$ 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.,;lq.bxn nmx9 0-N force. If they are moved to a mxqxb nn,. 9;lnew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first alw tn.7 csm**m+dl1xcharge 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 charge at the om dt 7wl+.am1s*n clx*rigin?

  Three point charges are placed on the x-axis. A ch0prs ,ro mf (eg,/n1vkarge 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 mark. What are the magnitude and direction r sepr/vno,, m(0kf1g of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the followingwq):q hfim z7 0vi6/8 rih7liu positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC w7zumh8: f6lq/i7 ihv)0 rqiiat x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude 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 pointr hhk488kl r+znw02 x8 e(zm)j(vbtqe 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 forh8xwze r+ v8b(km n 4kqz2r8)0t (hjelce 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); Q3 = 5r3ko: ,1fh:sw3 dune g.0 nC is at (0, 0). What is the magnitude of the net for kn1fgs3rh:3e,o:w u dce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q*jva3te 6 px w)cnu0,i+ p,cqtas2 g.m2 = -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 on the 5.0i2m*p3c)ju t xs+g6,0te,vw.nc paqa nC charge?

  Three identical charges of 3.0 mC are placed at the vertices xzyx349lr2 kuj )z ,vrpkt)x/2y:kx yof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any on)42 xzxxz9:yju /y 2p,vytk3xrrlkk )e of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3 3,1uu ns ald;+dxqwsv; iln0,.0 m. At what point, on a linnsu ,lq3lvd ;ua1+ xd,;w0nise 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 +9.0-C charge is at x = 4.0 m. Where on b azl;1tdh,b*kc3(nu rz,rm 6 the x-axis can a third chh,rlrazz*cn( 3 km6b ;1tudb ,arge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q i) tcxb.hhr+ 3ks placed at x = 2a. Where can a third positive charge +q be placed so that the force o +rc3hh. btxk)n it is zero?

  A copper penny has a mass of 3.0 6.i/l. (,s ateqi d3q)a w.esggdvhm 0g. 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 ow07h8 ,g 2ab h-dwpkc9wx5rqof gravity by the attraction of a fixed proton s-7w5rwq2,gbhp0ax 8do k9 hwcome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hunc ps ;p4r.onv;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 untilc4ps; novr .p; the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of in9b h9jqo*7v +40e. What is the magnitude of the electric field at a dista7*jovbh iq99nnce of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance jexwjp*) b2u 0xfj/y55d 5o2 lkn-ugqof 1.50 m from a 50.0-nC chyo5 -j ud*0)q/2wj5lbfj 5ukxgxn 2pe arge?

  A 5.0-C charge is 10 m from a small test charge. What is the magqk8edr,/b *w) a5ypn 2r/lwrhmdk68 gnitude of the elect6drq8de nwpwh/2km*y, al br/k8gr)5 ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whusg+ri1a v0k2 i0 k4wzat is the direction of the electric fzai i+w10 kvs2g4r0u kield?

  A 5.0-C charge is 10 m from a small test charge. Whatlx - b*5s1l3q xc0 macy,vaho lcb*a,- is the magnitude of the force experienced by a 1.0 nC charge placed at the loca-m*5q a- 01cba v,s*xo, lh acylclbx3tion of the test charge?

  Two point charges each have a value of 3.0 C and are separate,s5a qmu:u as7k0r7.mz5ya lod by a distance of 4.0 m. What 5alm50a ozm.q: s7yasu,7kr uis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter s +1mbjnumpi03ro:hn6 tick and a -4.0 mC charge is placed at the 50 cm mark. What is the elec r:+6jpmb1 ni3n hum0otric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a m)ab+x:6 a7fy j5ii:a2mirv ometer stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningm)ima:2 x+ a:fv5jy 6ab7oiir the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 118b9z tutbx076i9mx bga bn gmC are placed at x = 0 and x = 0.20 m. Whatnb1 guztbgx 1t96i79b8am 0xb is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarx 3 ;tw3z9x,xs a 8xcfs)oc;c/snzc;ee 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 squcztsc,s/xxs9ca wcf ;);;3nex8zo3x are.

  Consider a square which is 1.0 m on a side. Charges are placd8)fy d c.txs0ru9f .jed 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 thec 9x ft8fdd.usrj y0). 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 pxn, f2fouq7 /glaced in a uniform electric field. What is the magnitude of fq7x/f,2ugonthis electric field?

  A particle with a charge of 4.1hxsr1 yw5 pp )uzw3v10 mC has a 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 g5t4 2chq5hv,b9kt,c i.hj jxis placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the bak2tx, 4c5jbtghvhi9,5 .hj c qll for it to be suspended?

  A foam ball of mass 0.150 g carries a char) 5a w8vhjo1xige of -2.00 nC. The ball is placed inside a uniform ew)ai5x 1j 8hvolectric field, and is suspended against 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 magnxh:o+)i lk /yo5wre/yx- + vdbitude of the electric field 5.0 cm f/ ovl)bedy :xw-yrki+ /h+ x5orom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is,pj 9 pxlxq-8m the electric fiex,qj8mlx 9 pp-ld 6.0 cm from the center of the sphere?