State the law of conservation of electriczy l+,hlesem;u*v 7 0w charge.

  Is it possible for two negative charges tofp) j8azk rj52 attract each other?

  Is it possible for a positive and a negative chare dsmrnlw19 )/upe5.zge to attract each other?

  A glass rod is rubbed with a piece of silk. During the -zidc7ui: , psprocess the glass rod acquires a po7isd:ic-,u zpsitive charge and the silk

  A proton carries a

  The model of the atomoiwa0.9bzw0q-koqe q 8jp br8 dc*l*6 ezmc86 shows a

  A neutral atom alway0ivzs vs5z :l;s has

  An atom has more electrons than proto/oxbg20sx, .k p 7mwz7ar9aohns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refifdpof2tgq 63.jg2twj 4) ky-err6ptgi2 jo) -ytfdf3g4jk qw2. ed to as

  Materials in which thphy5 kdgh71qsmp:o1vt ov;)0e electrons are bound very loosely to the nuclei and can move about freely within the material are referred to as)mp07 o;ks:1hhvoq pvg 1dyt5

  A negatively charged rod is brought near one end of an uncharged metal 5 w00uzcpn h7odz3tdj3vu ,pog**zc( bar. The end of the metal bar farth0hz*ooc 33 u cvj7nz,ut0* pwzg5d(dpest from the charged rod will be charged

  Sphere A carries a net positive c/clxpu;8 :whd harge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire th;d8x: /w ulcphat is grounded. Which statement is correct?

  How can a negatively charged k40 od02l (b76vbcc4tsankvv rod charge an electroscope positively?

  An originally neutral electroscope w e7:hm6t1o 2;cw lpkhis briefly touched with a positively charged glashwt;ckp : le1h wom267s rod. The electroscope

  An originally neutral electroscopa. nq0ry6idg,e is grounded briefly while a positively charged glass rod is held near it. After th.dn0g 6aqir,y e glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep35v f8mrkvf;s arate. Then a negative object is brought near the electroscope, but does not touch it. What happens fm8; rv3ks 5vfto the leaves?

  A large negatively charged irf97+r9x hdb 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, and stops. The first ball rolls forward, but does not touch the nd7rh f+9bri9 xegative 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 ofj-o23q lmq(22iyfbff *rlp *u the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated uq -vrl;qh9rv/tc(e6 : s7 ejeby a distance d. The first charge is larger in magnitude than the second chargeulejq 7 vq6h-(rce: vt/e9r;s.

  Sphere A carries a net cha+ b,l9w-oz p.)z4tlae d+vxxbrge and sphere B is neutral. They are placed near each other on an ileztvb 9 wa bd+).l,-xxoz +4pnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othiu )t34u45+u liwjo;lsy.w wrer with a certain force. If the charges on both objects are doubled with no change in separation, the fywwiil 5o) wuuu+3.ts4l r4j; orce between them

  Two charges are separated by a distance d and exert mutualt* nr3rf0xk ob(jtuwhe25+b** domfc 7g - f.v attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fo+oktj mn 5dr.7 3uw2ogrh*0*t bfb efx(-fc *vrces?

  Two charged objects attract each otny04 tuvd7 aj (bnp7we/mowyn)ku1 x: vw-84aher with a force F. What happens to the force between them if one charge is doubled, the othow :ap kn-un(7ew7vvwtj )d/18y y x4a4nb0 muer 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 distance of 1.0 rb(5s z5s0upjy,rkv3 m. What happens to the 5kz50 rr(u vsb3spjy,magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to hcw(1o9 3fhzt, :hpbu the magnitude of the force on the first electron if a second electron is placehoc(,z 13hw:t9fhbu pd next to the proton?

  An electron and a proton mg f6v1gz6fk3are separated by a distance of 1.0 m. What happens to the size of the force on13fkz66ggf m v 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. de(xqi 5.pqk;*tsowvl j77 r, 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 ar;r j75 *,.xpkqql s7witeod(ve 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 s1,7 n 0q+yetg)vt7cp r2aozt centroid of an equilateral triangle. When a second charge z oryvq7+)2t10ngastc , etp7of +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 not 1clumr x /m,b(p7s9zj a vector?

  At twice the distance from a point ch+5o,jq irx3fxarge, the strength of the electric field

  Is it possible to have a zero electric field value between uayyrfz 8+l57pd1 3c aa negative and positive charge along the line joining the8aar73lp1 cz5df+ uyy two charges?

  Is it possible to have a zero ezrbumm 9xb-e gt 5+a g5 zlpdp:7))h9plectric field value between two positive charges along the line joining the two charh)97e xbpub5 mamtg5-+ pd)z r lgpz:9ges?

  Electric field lines near psitive pu30m; jn4r8bydn7mtriac(0l:y y 0u f oint charges

  The electric field s( yi z6df;ml2sv rub.0apvv: -hown

  Can electric field lines intersec,w2zl.m9 fm.s4wa )qx woptp 1t in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform b 3is6h -j c39naqwugvwi//x3electric field. Give a-viawj63xs3wi3gqbunh // c9 statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metacml*zv u8;m5 ldx h.q0)4mt oml sphere of equal diameters are each given thmql ;l8)vm4c ht mmd.*z5 u0oxe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum restsdxv z 8r5zb;y4 on a wooden table in a region where a uniform electric field is xz4 rbdy;v8z5 directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equ*vyf; as8pg:h4l +juk)d0a qpilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grxszjof8ojh n.:pk m)+73a8q kounded. As compared h z8:8q .kj)msf+nkjo3 poa7 xto the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equihc ;hth0kipj m 79(kjzk 2)hd6librium.

State Gauss's law.

  The charge carried by one electron is ew yz9m-.q6 idf2, 42mmhbxo y$e = -1.6 \times 10^{-19} \; C$. 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 muz)4 c5 etde.qany more protons than electrons does this piece of zd.5 cee) 4utqplastic have?

  What is the charge on vg2 u- rnybtxc+ 4tc;/pwnc( oz( 1:an1 kg of protons?

  An atomic nucleus has a charge/ytf 5id1g7rukj gj5aeat.1w2yn d-8 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 vqzhbqux4 q5,.keij) 7alues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw ui. h)jkx qqqb5z47e,een them?

  A 1.0-C charge is 15 m from a second charge, and the forzqx hgl- d;q 4f/hmgd:4ir(e z* -x.toce between them is 1.0 N. What is the magnitude of ther;dlq-io h4.g:h/xt4fdqeg( x*-z mz second charge?

  Two 1.0-C charges have a forc ,gglg33u s5s;q2r4wf topbj8e between them of 1.0 N. How far apart are they?

  The force between a 7/50wic0 tcl wjwwu+h$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm ad7b.a gwfl /you.o 5;hpart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?by7 ;w/odgf. a.ulh5o

  Three identical point cha -x/g)anwiq:arges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to t/qia n)ax-g w:he 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 origin?

  Three point charges are placed on the x-a6qic/yub v,d6 q*qf q0xis. 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 mark. What are the magnitude and direction of the electrosufq6q/cqv6iy *bq ,d0tatic force which acts on the charge at the origin?

  Three point charges are located at the followiny q2 obvwphv78,t;j. m;u 3gkwg positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x 7q 2g m.w ovj,v38k uy;bpt;hw= 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 poiu99oa1i.hd ,t. uc eqpdsm()ant charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positivep.do).9us hc (1m, uqtad ia9e 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 mbh3h gd,kt 6rm+z72dyf2 dd 3e); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force obe,rdft 2 mh3dk+z3d 2h6gy7d n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is axsw p4x*a-p8 hd8t5lvt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of ttla ppdx5s xh-8v4*w8 he net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plplfj:7 z)0ql a rg*6rj 5c-qdraced 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 7 pa-gc:j dq q0jlrz )*65frlrthe charges?

  Consider point charges of +Q anjc 9sp06vqi di+n7h b9d +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 charge of -Q such that the electrostatip9s+ b 7v 0jichq6di9nc force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at1, h/r,z , c-roi 9iv;wsmkdq8s+qszc x = 4.0 m. Where on the x-axis9d8,+zi1vshqc;m-ri qs rc wso,z /k, can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qz 8 ,q1i )n.ajr: udqc.9lbmzzd( gie, is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it nmzqd8aj,1l .z,d) 9e:cribqz(g. iu is zero?

  A copper penny has a madq3;a7 8)bf uehgv88s+azcnjfh b (f+ss 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 attraction of j,44cwkw4jqmc ,th t;a fixed proton j,c ht kq;,w4t4w4jcmsome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common pointe/ x0bt88//5l r,uyao kxtdvb by nonconducting threads which are 30 cm long. Both aret//8b lo85 t/x 0ve,udrb ayxk given identical 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 thgt:br50 1wwfs e electric field at a distanw5b s0 wgrft1:ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the i:b r (nq7qba+qne41d electric field at a distance of 1.50 m from a 5eni a(b 4d1:b7q nrq+q0.0-nC charge?

  A 5.0-C charge is 10 m from a small test x svq:+0ixxru8 3-v(xo apum 6charge. What is the magnitude of the electric field at the lpax:v- m(xrx usu8+ovq60i3x ocation of the test charge?

  A 5.0-C charge is 10 m from a sk4rskhv4m-wtp *zu41mall test charge. What is the direction of the el *kw1muh4r -s44vtz kpectric field?

  A 5.0-C charge is 10 m from a smalu6okntp+ .: atl test charge. What is the magnitude of the force tn+6t.op auk: experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separolf5hlr;-i umnn,;kf (vcyl 7 6a97m wated by a distance of 4.0 m. What is the electric field at a point midway between the two chargll5k9mh a n(mynocir-w;u677,fl ;vf es?

  A 5.0-mC charge is plac, c.hm b/k,*g;4jjcy pq*4scw eos+dled at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electri j4c.*+smhw*/o4 pld;e cy,skcqg ,j bc field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charrjtfbd .4/s1eq4k0na ge is placed at the 50 cm mark. At what point on a line joining the two charges is the el4r4ns/baed0j f1t.qk ectric field zero?

  Two point charges of +3.0 mC *ie1nfe-wb9to+o(row aqv-: x*xo r4and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway beo-n(afv:*r ee*w+9ot1 ox wrqi 4x-obtween them?

  Three 3.0 mC charges are at the three corners of a squqfjvko(kw v a+bd0d4:7/ u4l3 z rzi1rare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centb( l7q jkdri1da3z4 0 :+wz roku4fvv/er of the square.

  Consider a square which is 1.0 m on0j./ ogyg f-xr2i5jv*zb ca: k 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 . v:orx/jgz0*-y g52ki cajfbthe magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mCn*uk uz k41ljb *u)5 mckb(is8 when it is placed in a uniform electric field. What is the magnitude of this electri*u5 8nzk4j*lubu b)kik1msc (c field?

  A particle with a charge of 4.0 mC has a mka ;mo 5rl wq)dt2x3b9ass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of ,2r 0 oya mwn9:,byv4fr0ahs mmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. Whatmn2sywr o h0y0mfr,: a4v,9ba charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.1n dht3 + lefl80n+*osj9 (zqvr50 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 electric fielfo+(+dt08 39 vsr*ejnlz hl qnd?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What isn0 fn ops1(og9 the magnitunnsp9of og01 (de of the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carritb*o*sax -topww/ .i//p5 oycy)9juwes a charge of 3.0 mC. What is the electric fip5a jtt/ w**xu / oyc io./wp-w)bosy9eld 6.0 cm from the center of the sphere?