State the law of conser+o27krdvp -*iby7p kgvation of electric charge.

  Is it possible for two negative charges to attrayju a7 u8wqtf*;a ,sr/ct each other?

  Is it possible for a positive and a negative charge to attract each othexte ln;71;k wmr?

  A glass rod is rubbed with a pvw3(ye 5gex 7+kvukt3 iece of silk. During the process the glass rod acquires a positive charywtke5k3 uge v7v3+x(ge and the silk

  A proton carries a

  The model of the atom pe1e:g al 6h9dshows a

  A neutral atom always hase q64xrd.y2rsmek7 opo5rjg h vo: /5;

  An atom has more electrons tha oh-t h2fpu /,qtefq u8qv.;;on protons. The atom is

  Materials in which the el adhdi3.g 5p+n7bhi:r; mso5aectrons are bound very tightly to the nuclei are referred tonsdah agbhp.i3 ;o:r i5 7m+5d as

  Materials in which the ev,2) sqcorl(/ qe+pn vlectrons are bound very loosely to the nuclei and can move about freely nc 2(pe /qlsvrv),o+qwithin the material are referred to as

  A negatively charged rod pnt 8h vsfo.s:)f*)y av1c p)his brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charyt f*:1)c8nhsha.pps)f)vo v ged

  Sphere A carries a net positive charge, and sphere B is neutral. Thsh+ 6w (b9rl 35ufat6onep-riey are placed near each other on an insulated table. Sphere B nb-i6o6 3ulrsa e h+w(p9tfr 5is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope tdg 4ag7mfnkc5 x3h,xu/ ,n5cpositively?

  An originally neutral electroscope is briefly touched with a p z*+xxw jcla-1ositively charged glass r 1axlc+w*j-zx od. The electroscope

  An originally neutral electroscope is grounded bri0+mjz- 1bg d*gzuffy+j; 0phfefly while a positively charged glass rod is held near it. After the glahygf;z f0z0u++j-bgm*pfj d1 ss rod is removed, the electroscope

  A positive object touches a neutral electroscope, ao9 k4k5etk j,p nlva)1nd the leaves separate. Then a negative object is brought near the electroscope, but d,j9)n op4 lkte 5k1kvaoes not touch it. What happens to the leaves?

  A large negatively charged object iq 4t/;t5o/usd6 kw tvts placed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second n /tv6twd ;q5outtk /s4eutral 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 the Coulom axzw:i fbxjdjt9/2vvn-9( 6 mb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge isw2mareqsc0 x.uhbwk0hc l)2)n l t97 3 larger in me.q7u2n h2s30)wk0lla9 mxw) ct bh rcagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. fqf)ge7s:)u 26f j mkmh/igl- They are placed near each other on an insulated table2-k)eglh: 7jf6f/q gm)musif . Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa+ :o:hv9 ngmcsin force. If the charges on both objects are doubln: 9 scmgv+h:oed with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attk2a 6;yk:bv pqractive forces of F on each other. If akv6 qkp2y:;bthe charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapj nylpc rq 0q-bl .-z3dzy;jb69a :r)kfv 9k0opens to the force between them if one charge is doubled, the other charge is0zrbqjrl9oj:k a v3d ;yncb -fy.-p6lq09 kz) 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 m. What happens to hd3cfc63imk c7 bmnl 01ex1 .tthe magnitude of the force on the proton if a second electron is placef1emct7bl.0c ncm xh613 3di kd next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happeg z*g55h92i; ca qmoqins to the magnitude of i295 h qi* zq5gca;gmothe force 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. What happens to*yrm r trj99sbc1f+mhr6,-v-ivgkm 9 the size of the force on the proton if the electronrgm*r+ v,t-mis m rfvbr-6k9hc 19 9yj is moved 0.50 m closer to the proton?

  A point charge of +Q is place dct,7vu xs y8 )n:jj7,b6yph5lt3ys u8q*yjld at 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 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 cyuy)s,lytj l 63y,pb78u*5 78 sd tjnqv:cjhxharge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral triangle. f6w,zt/4c 5g vx zlg1nWhen a second ch1z /wtxfg6n5 cz,g 4vlarge 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 vertices?

  Which of the following is not a y 9qwp fc 4u86.rqg;ia)c+iwwvector?

  At twice the distance from a point charge, the strength of the /l ,*gpwi*wi)jz9g us* le f5uelectric field

  Is it possible to have a zero electric field value betwevh) 3vtnbg3) r7i.y3u , puiyeen a negative and positive charge along the line joining the two charge r33 )ehb.7t,vyigvuyiup 3n)s?

  Is it possible to have a zero electric field value betw:j7ky(ju b* lceen two positive charges along the l7lu* :jc(b jykine joining the two charges?

  Electric field lines near psitive point chaina)c 843hj okrges

  The electric field shoz5.+mo+f e( tizp olq, ub6ma/wn

  Can electric field lines intersect in free space4iwa g q/9o(yd?

  A solid block of metal in electrostatic equilibrium is placed inx* n:r hg(s)sf a uniform electric field. Give a statement concerning the electric field in the block's inte )xs:nf(hrs g*rior.

  If a solid metal sphere and a hollow metal qv 9fe3 awkj9 (a,8+3 scaccjxsphere of equal diameters are each given the same charge, the electric field (E) mis(wae+39qcacv3ajj,xf8 9c kdway between the center and the surface is

  A cubic block of aluminum rdf8hq f 3bj* *;m .he*gey-jpjb01zw iests on a wooden table in a region where a uniform electric field is directed straight iw8. bf3 j* d-bee0; qy1f jpmg*h*hjzupward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargu+x ,ukvbgq5pu;7+p( h 1jr./naidee e

  A positive point charge is enclosed in a hollow metal.,ub kjaop 4woyh0h.kh ss):8lic sphere that is grounded. As com wj:bk4 u)kph,osh h8say.. 0opared 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 eqfxpoun(w,* zl9;e p: u j/3nqtuilibrium.

State Gauss's law.

  The charge carried by one electron iq5i mp18eqy b3s $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has a ne,oyhw w.bn wm p .3t(fh-m83s,kg1qog t charge of +2.00 mC. How many more protons than electrons does thi,omgh(1 sqk.w o,h-fwy3g.bwpn38m t s piece of plastic have?

  What is the charge on 1 kge n,x5bs;rxh v+q:c7zl2 3+dh e5pw1; wfiemz of protons?

  An atomic nucleus has a +3j6ooi3 0xjcs z)yqx charge 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 values of 2.0 and -4.0 m6j z q p(ttmgsv53q,b-5zn,ycC, respectively. What gymz,5q6 (q3 z ctv-5,ptjnsb is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,ddg.ma0vkk 7du i4pr80 q8z /b and the force between them is 1.0 N. What is tddb8/qz 7 84augpvk.0k dir0mhe magnitude of the second charge?

  Two 1.0-C charges have a force betweenepxbq *0t;,rtpqkg m) 5fp6c0 them of 1.0 N. How far apart are they?

  The force between a m966n3,bp cb7 iwcmrk$30 \; mC$ 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 force. If thetozt :w,9wd t9y are moved to a new separation of 8.0 cm, what is the eltw,9 9: ztwotdectric force between them?

  Three identical point charges of 2.0 mC ah, )rbet94bxaj)8)7k kmbbwg t ib): kre placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thibwtxbb8k))itber j 7 kk94gmba:,)h)rd 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 p*g.*)sddvx6a,n)bw wpqy )aw laced on 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 direction of the electrostatic force which acts on the cha)w6b vs*n)x. a wdd),ypa wq*grge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a./shb6 +b om,0agkbiat x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whab gkh.m/a6o ,siabb+0 t 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 g:11 p takxc7sa second point 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 cet p: k7acg1s1xnter. 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 * wlzwp,sd8c vz*kp+0at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chapw d*vkzz,w s*clp80 +rge?

  Q1 = 6.0 nC is at (0.30fz.x-3,dnompn /isa0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). W /.3xm znsona0i,d-pfhat is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 m7f6s9zqv l0y hC 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 act97zyfl60q vsh s on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 ((aqn*vflzgez ,2f+ sm. At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it wou*lf 2( a(+nqfezsgz, vld be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge i.:z(jwt,ku :nha: snhs at x = 4.0 m. Where on the x-hks ,n:j:whzu an( :t.axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed a,-y x8/ i,7,wdkf 3milmhnh pflij(o 9t the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zer f nl9 ipi mow,hklif jd,3y7(8,hxm-/o?

  A copper penny has a mass of 3.0 g. w75 p- oi nc2y*nh5nedA 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)kol r5 yl8h-e against the force of gravity by the attraction of a fixed proton some distance above it. l58ler)kho-y How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads ,q/(.nvesyj lwhich are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them aparsq vy/, .jel(nt 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 9g8lo ospot6u i2dr qmx;i/,: magnitude of the electric field l2rm6,8d poiqogo ; x /ts:ui9at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di j 27 1.aggvfnk)01y,zvpau bqstance of 1.50 m from a 50.fg0)aa z1 b7gy2vqjv1 nk.,pu 0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magn0z 5hxlv0 tus,itude of the electric field at the location of the test charge? x,50ztuh l0vs

  A 5.0-C charge is 10 m fr*awic hf/hf1v i-;n3 qom a small test charge. What is the direction of the electriq ifi/nwhv *f;cah-31 c field?

  A 5.0-C charge is 10 m from a small test charglg)9jby -fa6pe. What is the magnitude of the forj)6-yb lfpa g9ce 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 -itd8ql; :4 ifgtmje4 and are separated by a distance of 4.0 m. What is the electric field at a point midway between the t4g:4tt mii8ldj;qef - wo charges?

  A 5.0-mC charge is placed at the 0 cnmho 72yy f75. eagv:zb0*lw7x v 6otxm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiel7*o:b o wvt n7.y xzy7v6f2x 5gh0melad at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andbzf. 8srq3r;zdye 4 7q a -4.0 mC charge is placed at the 50 cm mark. At what point on a fd .z3 q8 r;4bzrs7eqyline 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 , 7slxrv gt:/obtjilp/jc 530cd.5od and x = 0.20 m. What is the magnitude of the et 7:d t5ibxv jcslrlp.5 cg,d0ojo3//lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.8 u00w kt :nvb.v+/v/hed jvtc The last corner is occupied by a -3.0 mC charge. Find the electric field at the cente d nvjw:c bhtk+vte/0v8u. /v0r of the square.

  Consider a square which is 1.0 m ok. 7/x y6ituvfn 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 ui y ft7k.v/x6the 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 o*c62b4 sznvz,8gjhba uniform electric field. What iz zoh s 84vb6*2ncb,jgs the magnitude of this electric field?

  A particle with a charge of 4.0 mC h 6zfv+/)zxz nyas 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)8d0 l hqalz) rid7e1u.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to ea) r)dqiu8h 0lz d1l7be suspended?

  A foam ball of mass 0.1fihlkfj k.:+x w:*s4p50 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 fielf +k* wxs:p4f.il k:jhd?

  A metal sphere of radius 10 cm carries a charv1)3.bmtb y 2e; jmwfdge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's su.btj mw32ym1 ;bvfe )drface?

  A metal sphere of radius 2.0 cm carries a charge og x;b93e tseln /g-nc+fq7xd,f 3.0 mC. What is the electric field 6.0 cm from the center of tfn-cg,q7; xe9lx+ de3b tg/nshe sphere?