State the law of conservation of electric charcma25-2znmalv8bw ) v ge.

  Is it possible for two negative 2e0hgfsb zx 31s; bjj1charges to attract each other?

  Is it possible for a positive and a n*yy kmj3xf :pcn ,j:c7egative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the o f*twv0y ;u x71lvcw2glass rod acquires a positw7o l ycut21f *;wxv0vive charge and the silk

  A proton carries a

  The model of the atom5b:vuilk8xi3 shows a

  A neutral atom always has0g3ch2v)q5fwz5 nxs p;2j9oa0vzu fs

  An atom has more electronsh*hq22k-9y q, mtrc wy+o9uc f than protons. The atom is

  Materials in which the electrons are bound very tiguz(r- zli7 6ixhtly to the nuclei are referred to ax76izu (izr- ls

  Materials in which the electrons are bound very loosely to the nuclei anx5 b.0 .e) tkpyxyl8isd can move about freely within the material are b 0i espxt.yyx)85 .lkreferred to as

  A negatively charged rod is brought near one end of an uncharged metal bv3*x5hk1n(p+uz40s qe loro rar. The end of the metal bar farthest fro( zon3ku pqsrer0x5oh4 1lv +*m the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are placey ngwf68e+tub5+5wi q d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement ine6b5g 8y+wuf q itw5+s correct?

  How can a negatively charged rod chaco5j(mq w+xc4(gz a i5rge an electroscope positively?

  An originally neutral electroscope is brr0wv4ao d p;geajt(.)2iv la 8iefly touched with a positively charged glass rod. The electr w4v2). eoi0agaj dl r8tapv(;oscope

  An originally neutral electroscope is grounded briec y p5v02hh9rxlhi *b;fly while a positively charged glass rod is held near it. After the glass rod is removed, the elecb9 52ch*y;xhlhvri0 ptroscope

  A positive object touches a neutral electroscope, and the lea)g-4r, x gjviwgwka77im-a v8ves separate. Then a negative object is brought near the electroscope, but does not tou-8xw vvi gaagi4r7 ,-gw )7kmjch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tm ihc(1 z(dvw-si/aa +able. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the path fol1 v (z+dhisi/ma( -waclowed 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 Coulomb 8wzpz4 7. wqvcconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.6 /87n5 fdlzsvrku34 axvmg0 ujoa*2o The first charge is larger in5 mfj souo6a2/kdv vau z7xr3g08nl4* magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ne m6.c1o6fpaycar each other on an insulated table. Which statement fa.m1pcyco 66 best describes the electrostatic force between them?

  Two charged objects rsr-+xny yshf. nx 6*,attract each other with a certain force. If the charges on both objects are doubled with no change in sep6fy. n x+r-ss* xrn,hyaration, the force between them

  Two charges are separated by a distance d and exert mutual attractive fo gajni ux47u;+hql7b .rces of F on each other. If tna l4gu.j;7hxb+qu7i he charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with ax7.3u5gx9chki+ 9ad s eio jm+ force F. What happens to the forcek+xsim.99jx5i h37gacdue o+ between them if one charge is doubled, 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 prrsu bbh(( -(z wt+0f)gx2pfn yoton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed nex(utbnpwfz0(b -g (2+ fsh )rxyt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. . ,jtf;8ij9ocon-5g gd te6 iw What happens to the magnitude of the force on the first electron if a 6wnt joifc ot9 dg- .ge;8,ij5second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 5niq4b74*+os uvrx e8ts qnu6 1.0 m. What happens to the size of the force on the proton if sne4o 87ui*+nrq5v b6t qx4su 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 seco6uxf)cch ( sj-nd point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2h (c-xj)6cu sf.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 an equilsfw9l;d h:l,ymrj b/ xmsh-4j:1g au/ateral 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 force that acts on the center charge due to a third charge of +Q placed at one of the other x1jyuwh fl m mj;d4b /:ras9hl,:s/g- vertices?

  Which of the following is not a vecto2a y79mxvc tz7r?

  At twice the distance from a point ch:xmp6epyq t+31c url4arge, the strength of the electric field

  Is it possible to have a zero electric field value between lj/ az ( oyplfx/hs4p 0fyblh;6s:t07 a negative and positive charge along the lbjo0h syhts pl 6 (4:7;f/axlfzyl0p/ine joining the two charges?

  Is it possible to have a zero electric field value betweefsm09h70mz jw n two positive charges along the line joining tzj0mh70s9 m wfhe two charges?

  Electric field lines near psitive point charg yf4kkbf0 vhr .w )(wwnq *nkledh:v,2 -u1.lyes

  The electric field shows*oz+b 8d ki8gn

  Can electric field lines intersect in +x amc 9a4tf8bfree space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elext b brmc3tfwkc -r7zes0j c9d*61m.2ctric field. Give a stat7dfxj wmztbmbe-c3 r.c*1k 09c ts62rement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of ere5ygp 8i7+8z;fvqi equal diameters are each given the same charge, the electric field (E) midway between the center and the surfp ; gefiez+i8 ry85qv7ace is

  A cubic block of aluminum rests on a wooden table 6jxu / owyl;h.in a region where a uniform electric field is directed straight upward. What can be said concernih6ojxl;u. / ywng the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near anynvcp5wzdud w 5hnre 3,47vcq(t i 1(9 electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gro4zjkyb/7yjirc1 i(1 r53m2yf4ro mqa unded. i2a47k/ mobirrzyy(1451j 3j cmqrfyAs compared to 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 equ42932vsx nuci6:g ekv( xzqqqi4fn (dilibrium.

State Gauss's law.

  The charge carried by one electron is xs-xz- j6l fxk)wgd/y:cim;/y( jlst6 pro47$e = -1.6 \times 10^{-19} \; C$. 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 hibtp -lud,zt 72 14zamany more protons than electronsi, 2tp 1bltzz 7ha-du4 does this piece of plastic have?

  What is the charge on 1 kg of prot5uq2.q)2a3gwoj acg lp i08dgons?

  An atomic nucleus has a charge 1a a4vp asg;i+z5hi0p of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated fbb93a2*spaa qecq85 by 1.5 cm, have charge values of 2.0 and -4.0 mC, res q95caqa2be3 *a8sfb ppectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second ckflqeqtc* )t9( ql 6h +.x-dp ;im+xitqlf:.nharge, and the force between them is 1.0 N. What is q*+iffxlt.p .6tlhx+-qc)tdkn:eql i;q m9( the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. rc ) -.hk u8-udrzrb)b How far apart are they?

  The force between a q9-pv3:q/gg/8tkkw8 xjnaeom 9 rdc1$30 \; mC$ 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 1lw;q (qz4 wq,d bo2il5.0-N force. If they are moved to a new separation of(lbw,4d 5qwiqq2 ;ozl 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Thebbu8 *dh3/byt1ppw 3 j,xcj *g 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 which acjpwb,bhxjypd1*8/t bgc3 * 3 uts on the charge at the origin?

  Three point charges are placed on 7 7qj9g- lzdlgkf 0sl/the x-axis. 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 directzls/g -klq9f0 jg 7d7lion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positjfkijy4 m 5mna1l(*oqa1, n g+ions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at ay iq*fnlm+ mo5na,k 1(gj4j1x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pc y ;28lqzrk0jlaced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observek ;lj28ycrqz 0d 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 isvje th,6(o5dn at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.05d(h jv,o6 net nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);;-vm-e 2 himty Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha2te;v--iy hmmt is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticvqwdde oqk(;+) 4ovs5es of an equilateral triang vv5d(qod e)q4+k;swo le which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichz*5 6xgcg4tohzf, y)a are separated by 3.0 m. At what point, on a ly gz gt)z*f546 ha,cxoine 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 ;z6exg3 wzs4vgers)q. 9z+s+ vtbq( ccharge is at x = 4.0 m. Where on the x-axiq(6q. )sr; 9x vt+ egze4 wz+zb3svgcss 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 = 2+x nl:p;dt/1 k4y;-d8yt f fzbwwy*baa. Where can a third positive charge +q bntkd d;a b18t4 f + wp*y/:-zbwyly;fxe placed so that the force on it is zero?

  A copper penny has a mass of 3.0 o,m ul6t,d0d*hqmx v+ 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 c om9 o0y66dh, jvgw.j4riz;se b r(snld:.x1attraction of a fixed proton some distanceb61x:co s6 4sjgjd m9.wro ;hirv y,ez dl.(n0 above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by n1vv,ca/ swizhb8ok m ((ei x;eo;*i4xonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threaz,ei8i(1obx *4 miea;v;sw ch kv/ o(xds 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 em ndb:+-j o+1in2rtxx7 xl 4dwlectric fi+d+xxd2j4xlwm- n1trio n7 b:eld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of /l9p*lav(4mz psf;y xo1u h2h1.50 m from a 50.0-nC1u *(slzf4oya 9vlp; 2hxm/hp charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magn, w 2 sal/*htu4zoe8nxitude of the electrio 8nexhl2,ztu 4wa/s *c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is 8ijwkamo wj.x mir8.7s;n v,)owj: +zthe direction of the eleci:) wi.,8jj;vawro.mojs8k+ x 7m n wztric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of th;tgv y:ez,9 db,lfsy;ai s g5g8rh1h- e force experienced by a 1.0 nC charge placed at thegg a ss9,i,5e yg-yt :f;h1dzl;h8brv location of the test charge?

  Two point charges each have a value of)wy: : fjl)u: fmylv+m 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the lu+:f :lvymf:jy)mw) two charges?

  A 5.0-mC charge is placed at the 0 cm mark lfpjs8a/ty : ;of a meter stick and a -4.0 mC charge is placed at the 50 cfj: psa lt/y;8m mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is ptpifa,7 5lsp /laced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a7psfl p/,5i ta line joining 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 = 0.2zjxo fa8 hs/970 m. What is the magnitude of the electric field at the9 /jzo8 axh7sf point midway between them?

  Three 3.0 mC charges are at the three corners uh;ke i v-s1dhx/y84 ikg j/a7of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleci 7kh;81 h-vx4yik jea/ d/ugstric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners 9axg g sp4 gr0h p4,m))blta/gof the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3tahg,p)s bm9 4pg/r4 ggal)x 0.0 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 when it is placed in a uniform eleczzg8/v-n*c a xd 8(i8ac-upa wtric field. What is the m/cagxdzaw-*az 8vn (8uic p -8agnitude of this electric field?

  A particle with a charge of 4.0 mC has )se(( pjo(b7a3bsyel 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 placed in f -0ai ouo*i5sl n62ruan electric field of 6000 N/C pointing downn*0 6ir ouio52 f-auslward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0gs6 z:n--tm *g9kuzfbt oh1r eem ,i4;.150 g carries a charge of -2.00 nC. The ball is placed inside a tez mr4m-9h;ognub1ze f6i*-: s,kgtuniform electric 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 of43e(wjxsi p8i q) dfrey1v+*j +2.0 mC. What is the magnitude of the electric field 5.0 cm from theqiv (i +p*dye s4jwjfrex831) sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is 7za79b *jeeno the electric field 6.0 cm from the center z7e*n a7ob je9of the sphere?