State the law of conservy gkq7dy/i-jp 4t7os/ation of electric charge.

  Is it possible for two w9f/xat pt8t5negative charges to attract each other?

  Is it possible for a pose; rjadhf(7a k*o.x/x itive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Du09s 5iij:feha ring the process the glass rod acquires a positive charge anfsj ai90e 5i:hd the silk

  A proton carries a

  The model of the ato;g(8azd zk) a e3h1 papyzy63tm shows a

  A neutral atom alwaysy5)mtj dtn-5 v has

  An atom has more electrons than proton+u955ifroeye g 0pcx0. dzu,zs. The atom is

  Materials in which the electrons are bou*p moyo1-av;9jx pg. snd very tightly to the nuclei are referred ty*j po1o-avg9.sp xm;o as

  Materials in which the s tnp0h+z ,ctq :xlxy q*;bi0:electrons are bound very loosely to the nuclei and can move about freely within t 0;i q*xsbp,qnl tz+y:ht0cx:he material are referred to as

  A negatively charged rod is brought ne(v)4u bc ;yhvi4*zcnear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charg4cveh uiyc v ()zn4b;*ed

  Sphere A carries a net positive charge, and spherw,- wz g (t g.jf7tvz ggdeqx(o94u3j+e B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touct9dj 7oztg(u4gqj+ g vfxz,wg -e(3.whed with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?* )/ biidtexj;,x7-s hztt*fflr :6cf

  An originally neutrar.v.; ,saqwc8u /cc ztl electroscope is briefly touched with a positively charged glass rod. The e u8w a,scz/.cvqt;c.rlectroscope

  An originally neutral electroscope is grounded briefly while a p p6axq(8am*. .qnmyzg8nr: laositively charged glass rod is held near it. After the glass rodn mqqxm:*rlp8a(g..az8n y a6 is removed, the electroscope

  A positive object touches a neutral electroscope, and the el jc6)opfa00,lwr,(l.mc7 8sdbxr sleaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the lsf.,),e (r jcxr o60cl8mpl lbwd7as0eaves?

  A large negatively charged object is placed on an insulatozx +u.ko w n2(-)qm3p rr2siged 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 negative object. At no time does either b ()sugr m+2ixoon -k.pq3 wr2zall touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb napc :4 )*j6aypxz si,constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i66pnahb+ 7ngxt-dl.g n magnitude than the second char7h+6.axldg 6tnn-gbp ge.

  Sphere A carries a net18dtx *hcs y i-zcf24p charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the dc 4ctfisp-y21*zh8x electrostatic force between them?

  Two charged objects attract each other wqlqc,00 .yp2re vlx73w9ughoe : fy u+ith a certain force. If the charges on both objects are doubled with no change in separagy30u rv: 0o2u+q.wf cp,h7lx9 yqel etion, the force between them

  Two charges are separated by a distance d and exert mutu9otzww8 e msks39p1 s lsr:e5/al attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mut emssop sk9e/stw18z:9 r5 3lwual forces?

  Two charged objects attract each other with a force F. What happen7j9ojs d+h:w(u. pib ns to the force between them if one charge is doubled, the other charge is tripled, and the separation disj9:7bpd(u .+jns h owitance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are sepc ,7 c:q 0h+ /fjs2ujfg+xu;q7cegcztarated by a distance of 1.0 m. What happens to the magnitude of the forceg+/c;sf2 u7ugcfec7 h tx0jq j,z +cq: on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a dis pzf7 .a:nhhd7re-n f:-cqhn9:)na mgtance 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 f mzh7: :-a)c 7h:-.dg9nnnnqphr ef aproton?

  An electron and a proton are separated by 7 0dwh;;lawpw 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 proton;0 hpw d;a7wwl?

  A point charge of +Q is placed at the center of a square. Wqsjza;0 n1vel;s*1 gb ,f) pfchen 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 electrostatic f,; bpsn1;lc*qjz0 ffg eas1)vorce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilaterallz5xx ;ues wr w1 l8df6s5i(a+ 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. What is the magnitude of the +sxw;l8e15( 6 rul 5d wsifaxzforce 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 ve:8aq;wr )ay/djsjgw-ctor?

  At twice the distance from a point charge, the strength of the electr(-gzzq7d ray1 ic field

  Is it possible to have a zero electric field valu 4jv47u5rqynye between a negative and positive charge along the line joining the two ch4 vyy5un 7rjq4arges?

  Is it possible to have a zuz j+zd/r0nv ;v9w- mjlfb4- uero electric field value between two positive charges along the line joining the two cn-uduwmvj -zl94j rz 0+v bf/;harges?

  Electric field lines near psi.woze0f3apgbg;q7)z eem/n6tive point charges

  The electric field shobqv0a+i.-r zuj 74g yxwn

  Can electric field lines intersej8 d;pm 2isend 6.s2lrct in free space?

  A solid block of metal in i gyotst879qpz2d1c9 electrostatic equilibrium is placed in a uniform electric field. Give a 8sit ygo 721d 9cqzp9tstatement concerning the electric field in the block's interior.

  If a solid metal sphere ano 0hw muj/4wcaf b*k.n:xx: s(d a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and thx4/:hu(wn c0w jsxo.:f k mab*e surface is

  A cubic block of aluminum rests on a woodenx;oiom19 rpq;wj,w5 i table in a region where a uniform electric field is directed straig5;w,mqp1; oij o9rixw ht upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilib+h4lmng a/f3 :/beo ztrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that i1qog (dv)m 0ris grounded. As compared to the case wqo dr vm01)gi(ithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducto734xyx sln2q e0o *9ae-pjvbtrs in static equilibrium.

State Gauss's law.

  The charge carried by on +cyb(rtx 4 rzo7:wz8w/ js)hve 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 chat)yd svc0arr 8 h/s7m/rge of +2.00 mC. How many more protons than electrons does this piece of plastict)d c//ma8hvry s0rs7 have?

  What is the charge on 1 kg 5lti fl+e ckwq)h2uaz; (0t n+of protons?

  An atomic nucleus has a charge *j1nu . fn+gv/0 2fndze5rnir 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 value qo9;(htw/poofz lt:-0 tmv/js of 2.0 and -4.0 mC, respectively. What is th:q(0t9-mooz jt wlv;h/ftpo/e magnitude of the electric force between them?

  A 1.0-C charge is 15 m w 3atm* -e 4r;hmk0jm //onujjfrom a second charge, and the force between them is 1.0 N. What is the magnitude of thk3 ;j mj/0 h*ura-tj/4womemne second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theyi,lo1qy7 tgbx2 .53j ygcvruoy3c c; .?

  The force between a )et0;5w 1w rt/2pub-v 1lk:rwaoqkpk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, init.x: 5; 4m pnbwbhbmw+m hr,rt5ially 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 elech,rm b. r t:mpx4; n5bb+wm5hwtric force between them?

  Three identical point charges h /osm 6kvm77oof 2.0 mC are placed on 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 whichk oso7h 7mm/v6 acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pl*ow;pgw+ hix7 r: v+zoaced 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 electrostatic force whico ; vo+p*gw:w7r zix+hh acts on the charge at the origin?

  Three point charges are8 cu3s mjm*su3slf0au)( hnjgid-)1 d located at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00i*a3ms8 l-u dsds c0 3fuj)1 )m(ujhgn 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 myntsy 7 hap7zhy9s)7e. 6z)esquare, and a second point charge of -Q is placed at the upper-left corner. It is observed tm9 7 stey) .h sazhpy)nyz767ehat 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. pqmt)7cnyi1oe-- n9vx66kw l30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the 6nmexovpiclky 1 7t )6q-- n9wmagnitude 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 = 5.0c:ruo8 6 ow0j0j70ttkeeg atyf , y;*e nC is at (0, 0). What is the d6k a,tt*go0c:yj0 ;8 e0 foeujrte7wy irection of the net force on the 5.0 nC charge?

  Three identical charges odx 2+bp i.4bsdf 3.0 mC are 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 chd+x2p d4ib bs.arges?

  Consider point charg 2t j16ehav:qres 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 charge of -Q suej 126: ahtvrqch that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C cha jm7 2iocu9c a+3rueia4l/ ikx(t2i;n rge is at x = 4.0 m. Where on the x-axcuu2i x 3c4l; oira+j em/in2i7(tak9is 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 = 2uj 9 5(b, +bb0qfsv lhnggg.3ea. Where can a third positive charge +q be placed so that the force on it is zer sn+b9 b,h5e lb(.3q gggfju0vo?

  A copper penny has a mass of 3.0,b p pd.hw-j7y+czo z 9begs 7h2wdf+6 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 ag00qj 55 rtxhcfainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the e fhx5jcr500q tlectron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 5l cv*nezgz/ 1threads which are 30 cm long. zl 5ecz1vn*/gBoth are 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 o )rh1 mt*rilrl+j ef/-f +40e. What is the magnitude of the electric field a1 l e+jr i*m-ftl)/hrrt a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance e1e0 x0zhff3n4zd lxfz(* 54 oydx6uw of 1.50 m from a 50.0-nC ch4f 1eu6flzh*dx xdn40(zo3z yf5w ex 0arge?

  A 5.0-C charge is 10 m from a smallrs r t-q8:u1rl test charge. What is the magnitude of the electric field at the location of the test cha:1 rtq r-8lursrge?

  A 5.0-C charge is 10 m from a small test charge. What is the directio mj l-5fbgq0jg+g6+ nzn of the elef-b+jq 0z gml+ng6 g5jctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudebku9j xyh6h1 : of the force experienced bkx1jh y 6:hu9by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each h*w-bjr8 is( leave a value of 3.0 C and are separated by a distance of 4.0(rb ji-8s wle* m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is place7 tiem/ip c/kbd :b1i(1 fvda)d 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 elect )t ie1/da(b/idif p:17 cbmvkric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marqs;. f/n u ngzae27jb5k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line eqsnuz7a 5.;gb f/ j2njoining 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. Wh+.u7zzxk f e/uat is the magnitude of the electric field at the poizu .fex7u/k z+nt midway between them?

  Three 3.0 mC charges are at the thre rs ;-kef5qrj*e corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. F ;serjf5- rq*kind the electric field at the center of the square.

  Consider a square which is 1.0 m on a s*iaxd c )4c-mtvw2m:zide. Charges are placed at the corners of the square as follows: +4.0 mC :i zdm cm)xwc4a2*v-t 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC whed,n;smx/c km7 n it is placed in a uniform electric field. What is the magnitud m/nsdx;7m,c ke of this electric field?

  A particle with a charge of:u wm0*ho0w jx 4.0 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 is place.df*w7j tpao.tx)0qyk- 9xpld in an electric field of 6000 N/C pointing downward. What charge .9l tdft. 0ayppwxjo-kq* )x7 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 ballmn+zok* vltiw;/ru/q-7 4;qgfi evn . is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitu/n/qirnm wkg .l v;ez; qiuvof+t-*4 7de and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is then 9cjp( zlslemj )+(8p magnitude of the electric field 5.0 cm fepln8p jm zj(s) cl(+9rom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the eb9d . cyj/+fmrb4 p*uflectric field 6.0 cm from the center of the sphe+/4f cburmp*fb9 .d yjre?