State the law of conservation of electric chkzw jkk3z c+ekud3h qo-8 1j*(arge.

  Is it possible for two negatinzx4mg m1fd . j9m/th s:hpkzzg/413 vve charges to attract each other?

  Is it possible for a positive and a neewrz+u spq2a0 5l07*8v kompmgative charge to attract each other?

  A glass rod is rubbed with a piece of silk2f9sgub ,l 3 p1v5 ucldsws9r3. During the process the glass rod acquires aw uu2f g p,r3315 bssc9ll9sdv positive charge and the silk

  A proton carries a

  The model of the atom showsz( kowz; trkosoc6yo /m; 075b a

  A neutral atom always hafe7l:k12 wbr1t :gazdw6l :ew s

  An atom has more electrons than proto0apv9l hu4v 2sns. The atom is

  Materials in which the electrons ard+z,l 1ytjvv8v7 g3ife bound very tightly to the nuclei are referred to a lyivd ztj1v 7v38gf,+s

  Materials in which the electrons are bound very loosely to the nucleis:gw r.qdjlbku/ jn; p-60ww) and can move about0k /wu.p )dnjsw b6qw;g-lrj: freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T.(uce8n2-c qosv mor10g ell7he end of the metal bar farthest.c7ogem lreo-0qvn2(u1 8cls from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plar3+wyial1eol -tkid1m zaq p 3 3-s,0nm mw+1rced near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corrq 3 w1awp3rt0nzmsy +13eadl mr - ik,m1-ol+iect?

  How can a negatively charged rod charge an electroscope posa av;k0m9.bta itively?

  An originally neutral electroscope is bn;ayl jt/v -3zriefly touched with a positively charged glass rodan-y lz/j; t3v. The electroscope

  An originally neutral electroscope is gryc, b7za(d3 9kdfh(i, w ti3vjounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscopev9tw bfi ((3 zyjc,3,kid7a hd

  A positive object touches a neutral electr z-t rs03zien*oscope, and the leaves separate. Then a negative object is brought near the electroscope, irnz*3-szet 0but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral kfxq z li4x;)feoh.+ -8*s kdas9e8ljmetallic 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 objec)- 8*jadks; . sqx+ol4iffkz98e xel ht. 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 )s kze3-tb+2 uafor0 w.8 xgpnconstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. 8 7 d;v /rm(dnt4e4m5sbeg9ixi8uxtpviv5 w) The first charge is larger in magnitude than thid5u4mv 5px vibe;d /7t849t)xv e8s(w nirmge second charge.

  Sphere A carries a net charge and sphere B is neutral9r;j+bolm( 5eweas3 z xwv3v3. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweeez3aorb(3m ;+35l9v jwwe v xsn them?

  Two charged objects attract each other with a certain force. If the charges on/xf9yx*:o tsv both objects are doubley ox:/tvs*9fx d with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractw5*h bn ;jlvi)s pi69 z :zwek;zzw5ly.4v(ozive forces of F on each other. If the charges are separated by a d96 4 w*)vjl.zyoz bnzp:esw;5ki5v(ihz;l wzistance of d/3, what are the new mutual forces?

  Two charged objects attra: -inisj+/wm y zoh:f5qp.t+ jct each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth itytwopz: sjijf+ i h/q .m-:+5ns original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What a5kg7 xn7.dljhappens to n xja.5d7 kl7gthe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a protojdk. ou/(y 5f zzh6 ky8bo+4ryn are separated by a distance of 1.0 m. What happens to the magnitude of the jhkz(/o8 ouyb65r4 +.kdzy fyforce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. w)y ch sg a8:ebqw5m18t8nxl8What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the58bmwtw1gn: l sa8ec)hx y8q8 proton?

  A point charge of +Q is placed at 7o d;csgmf(k1 the center of a square. 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 g7f1(o dsck ;mN 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 equilateral mcfb1psgqc9 ( x9s-. ktriangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on.9 bc9 x1qfgspkscm(- 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 a7 7 i axy):zkklo5z*ld,l-vav vector?

  At twice the distance fraceq;lgf ; vr ph6f:(3hssp7)om a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and posiol 4 qdual*gm; ud+ *tu+)hpv6tive charge along tu+ ht4;l a+u)*vlmd 6goqudp*he line joining the two charges?

  Is it possible to have a zero k79qtoq;k+ wi .m kt8ij u66hpelectric field value between two positive charges alk.p i6t j7;6tiqm k9o+wu 8qhkong the line joining the two charges?

  Electric field lines near psitive pointa)m+ 55r.znmz,bk 3x(x iig;bfm9b0.r k shbe charges

  The electric field sn a858i8-u1 mbjfwwcle e(jy,hown

  Can electric field lines inter0/u zru5+a w a-eavi,psect in free space?

  A solid block of metal in electrorlj cy 3ilpfz.a0,db 86;j4rfstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interior.pl48 fidc 36abl;,rj0r zyf.j

  If a solid metal sphere andfoiix.bg o b6y 3qb759 a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surfab3iog9 6x yf .75bobiqce is

  A cubic block of aluminum rests on a wooden table in a region where a umx+kya1; 7 lgpniform electric field is directed straight upward. What can be said concerni+kx yg;1l m7apng the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium 90*uxy3j : ln/rlg zxqnear an electric charge

  A positive point charge is encz ty ii:l 0sjcva9+j33wey .m8losed 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 the hollow sp8+ zvaljt 9sy3 .w3:iije y0mchere has

State three properties of conductors in static equh fyjdp,b /)6e:vjd ;uilibrium.

State Gauss's law.

  The charge carried by one so. ,2 ha+f 7coatzx8k8(*icv-clvlvelectron 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 chak5qb0e0hf7 j ,1fr dfzrge of +2.00 mC. How many more protons than electrons does this piece of plastic hah07fqdrkf50bzj1f ,e ve?

  What is the charge on 1 kg of proto3v e kbeq8q/ q8ayz8:cns?

  An atomic nucleus has a charge fd2g ;4dg6j8+l*k onk)quj smof $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sep9oruo k+ 2:d m7e8tgnwarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respecti8 er :uwntog9o7m 2kd+vely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thed:a1xcra0bi:i sc6 *km is 1.0 N. What is the magnitude of the second chari16r* 0c:ciadax:sk b ge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tx 76qagp +e2fyhey?

  The force between a uoh41 kwvkp 69$30 \; mC$ 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 1.0-N forcek zped+2: t,f)rlbp,g. If they are moved to a new separation of 8.0 cm, wha,pbf l2+z:,g) tpkdr et is the electric force between them?

  Three identical point charges of -*zlosa6bsa(wewp1p87 l1rk2.0 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 electros1zs wao6 b (l-8wpsr7 a*k1leptatic force which acts on the charge at the origin?

  Three point charges are placed on the xc;lrl4go0z ;;vgq ;x 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 direction of the electrostatic force which acts on the charge g;loc;4r0qzl; xx;v gat the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC atqs c +fd,i-)ic.xz9 sh x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnz -d .hs9)iq+i,fc xcsitude of the force on the 3.00-mC charge?

  A point charge of +Q isgc i goo- z-er-qwoqxq.p(g /;fsu8*dpk , -l9 placed at the center of a square, and a second point charge of -Q is /. -ru ;98o( -cklxdq feigosg opqqw--*p g,zplaced 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 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 m); Q3 =5,:d6 + gl-2adg wmfzrdzzxf 0 5.0 nC is at (0, 0). What is the magnituda dm2w fdz:x0-z 6zr,l fgd+5ge 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, 0.10yy yd:0 rvn-8d .e)zjy m); Q3 = 5.0 nC is at (0, 0). What is the direction of r n8jd.y-)d 0y:yyzvethe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC m : 7/y0or esa-+pxtgbare 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 emgybs 7t:0+xr/-aopany one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what pz-xlh4-ctk8egx 0 a4 koint, on a line between the two charges, would it be possible to place a charge of -Q such that the electrosxzk- hxet kg8a4-4 0lctatic 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 oypj yr.92vd8pbq5y92 nnvh 6pn the92rp pbnvv yy2p8dn.956hyqj x-axis 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 placede:hl- c-reel7x .ov1y at x = 2a. Where can ll .exy- -o:e71 crveha third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalom:p*q3re 3nqv(w5 oa 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 attractiod5v t+mdl5p+/dsgv x(n of a fixed proton some distance abov+t vdd5vd/p+l(m sx5 ge it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by yq*hdu*)imh,+rq9:sw) kp q a nonconducting threads which are 30 cm long. Both are given identical charges, and the ehu)9i)y+wkqp mr *:,* dqash qlectrostatic 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 tb0h -aed5 c8qzhe electric field at a distance of 1.0 m from the nucleu h8 a0edqzbc-5s?

  What are the magnitude and direction of the electric fiel0sym e a:,t4az )b. g*bwtt aezr-t0;id at a distance of 1.50 m from a 0es)ebt; rz,taw:a mt4.z-ga*b0iyt50.0-nC charge?

  A 5.0-C charge is 10 m from a small test pix 7s0+ k- vvppja/z8charge. What is the magnitude of the electric field -v izsp0/k7vjpa p8+xat the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the div h+3i;sccpg tb;3l7zjb4ud 3rection of the electric fieldi 7zj;c3;u b4p+t3lsgd3 h cbv?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fij0+ug,2h bg torce experienced by a 1.0 nC charge placed at the location of the test tub,i0g+j2 ghcharge?

  Two point charges each have a value of 3.0 C an .7rl 5zts/isnd are separated by a distance of 4.0 m. intr7ls .5/zsWhat is 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 sty8w(rl q6rfl6 fce9m *ick and a -4.0 mC charge is placed at the 50 cm mark. What is the elecfre9w*8lql6f c(myr 6tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmygn77.egx;3d l3ep n4h1 qpa v mark of a meter stick and a -4.0 mC charge is placed at the 5; 7egq ld3gep4h.7y 3pvnn1xa 0 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and b-apkff7 a/;f -7.0 mC are placed at x = 0 and x = 0.20 m. Wha;fapa7f/b -kft is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corn tf7*hir0t*p*e 0lr iaers of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cent00t*ehrr*iapi7 *f l ter of the square.

  Consider a square which is 1.0 vadi 7i nos4/w2ubpvdy0:4 c8m on 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 atap4cus4 0: 7 winy8 dvi/vdob2 (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 char(4c ieo 95dareanm+e.ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude o+ 4oee( 5r9a.diemcna f this electric field?

  A particle with a charge of 4.0 mC has a asvo ut5z ,5jq(-c1nx6w adw)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 an electric field of 6000 N/C pois;v9lx.6mnpn- h fgm)nting downward. What charg)mv l6-mgx; n pfs9h.ne 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 b a5m 7r94r.szbbda xz8all is placed ina zmsbaz .4d8xrr9b7 5side a uniform 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 carriq+*jqxn qwxpn+z) ;k 9es a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sz;xk qnw+nq) + j*pxq9urface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What wkpn 3j+wxg ;chu+n wu1i)qktb6h*+ )is the electric field 6.0 cm from tpwu+jxk+ uwqgcit n 3bn +)1)w k;hh*6he center of the sphere?