State the law of conservation of electric c56f+0e a u-q;cuo7 j vhr,mapiharge.

  Is it possible for two negativesy-go6 sxq3m2 charges to attract each other?

  Is it possible for a positive and a negative charge to attract;(pzdhbke: 42wzdc y, each other?

  A glass rod is rubbed with a piece of silk. rzyj zv,63. htobs41 e/mnf3dx.kr/ c During the process the glass rod acquires a positive charge and thehdk, / or.m z/y3nxz3jsevtc.f1 br64 silk

  A proton carries a

  The model of the atom shows izyq 8i)nl8a5x cv..ka

  A neutral atom always61;y l-vp yfzq has

  An atom has more electrons than protons. The 8 qy(li:bb a m5lkl)ymi7 :wc2atom is

  Materials in which the electrons are bound ve rf-0o l93srlpry tightly to the nuclei are referred to0pslr ro9l3f- as

  Materials in which the electrons are bound very loosely to tld)v 1o) ld:4 q,korqlhe nuclei and can move about freely within the mater1odq) lv:4dlr lkqo),ial are referred to as

  A negatively charged rod is brought near one end of an uncharged t0uj3mj frq1 2aw/s+fmetal bar. The f+jft0 13a2mjqrwu/ s end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chary(xix )moi3 (rnjip66 ge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirer i6y3)(in(px 6jomi x that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope p;xf+z3lg4 1mf9t dfcpositively?

  An originally neutral electroscope is briefly touched with a positively charg2j;*f a;a4iu un3aboued glass rod. ;4 o*fauua3ab ij 2un;The electroscope

  An originally neutral electroscope is groundedf:;+ d ng0 xppg2e3gwp; wm /4esklum1 briefly while a positively charged glass rod gs;dfe/gupl1 k;gww0 e23 nm+ :p4p mxis held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separateas ,7 0fz2usqf. Then a negative object is brought near the electroscope, but does not touch it. What haaf2, 0s7qf uszppens to the leaves?

  A large negatively charged object is pla736m ezl2 vccuced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball recmz c27 63vulolls 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 Coulomb constant .w m04+ vgln ucg- 2v+tf*nkhr$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstpcmim: 8v.p5h/ p(wow charge is larger in magnitude 5mo./8 pi p( p:mvcwwhthan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near urti u)i 9wbq/ a,vmjuv;+:qf;r*y.leac q q.u:futii)j+bv;;uaml9 ,*r/yv wrh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. yebwy:9;qyb a weuh*jbsgze4:k *ne ;,w03*n If the charges on both objects are doubled with no cha ws4*,gz3e na;u*:yb:kee nwyweb9 by;h* 0qjnge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivepmv24 wv e2.rjni,q )k forces of F on each other. If the vkew2vm,p4 )iqr 2jn. 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 happens to thuzx xikj618:wh2kpq ;os ti ,-e force between them if one charge is douupitwz6qi8k ,x s;j :h12okx-bled, 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 proton are separated by a distance of 1.0 m. What happens0bqf46c 2cyrj4 wjl; o to the magnitude of the force on the prq r;0w6cof4lbj4 j2 ycoton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance ofqo,r6uf qti 0b(4 5uhidrc2k) 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is q 5t 4,fk2h)bq6drorcu ii0(u placed next to the proton?

  An electron and a proton are separated by a distja ze.5b5hlm8a xul75a x8pv*ance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0p7uh 5lz lve5m*5 .x8jb8aaxa .50 m closer to the proton?

  A point charge of +Q is placed at the center of a squak5:vz1n;(z/g-ub bx; kht dj 8p+prlkre. 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 k +pz/k8hgk tdrv1pbxnj ; :5-(lzbu;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 trianglatl l 7/w0+wpge. 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 magnitudw7g/+ lw 0ltpae 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 followinso h.dh1x ey,b8dof:7 g is not a vector?

  At twice the distance from a point char/uidsq lll:o19 7),q, nw7f acgn 1 5unktodm)ge, the strength of the electric field

  Is it possible to have a zero electric field value betwem1a2p5 :(fo l-i ntumnen a negative and positive f t5 n:1mloa m(np-2uicharge along the line joining the two charges?

  Is it possible to have a zero electric field vp.6e:-hfo vbylfu +)7 n zun0oalue between two positive charges along the line joining .f-7zh6:e0lo) yvu p nuno+ bfthe two charges?

  Electric field lines near psitiver +1r-j/bi+ea;8e n7aqvhc rd6 q8lhy point charges

  The electric field sg+0ch4ivzqx: by9 t( chown

  Can electric field lines *)qyhp k8mjj.j5ewcc ,4 p4 eqintersect in free space?

  A solid block of metal in electrostatic es66yqto gqm --wlvh+us, j5 ;kquilibrium is placed in a uniform electric field. Give a statement concerning the electric field i,vu+;jw6 y5g6o s h-ksqltmq-n the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters a/uxxa yp y 0d2f1z;vo0+ie6v kre each given the same charge, the electric field (E) 0op+i zk2 uaxe/dvv0;f1 x6yy midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table m) /0cr ve:ojec455mqco 1qr hin a region where a uniform electric field ir ohcq40e r5o:cv1)mc jq me5/s directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium .a hnxb5 /uzy/)vko-c near an electric charge

  A positive point charge is enclosed in a hollow metallic sc3bong +hrx l0g, 3k7u, 2potrphere that is grounded. As compared to the case without the hollow sphere, the electric72+obnux3r ,rcgtp3 lh g0k o, field at a point directly above the hollow sphere has

State three properties of conductors in static equilibry7yt/ k -wpnpb,va, u7ium.

State Gauss's law.

  The charge carried by one elec8 wbrbzgfm : /+/u9e/vbc lme(tron 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 avj l(;ux+a5wnet charge of +2.00 mC. How many more protons than electrons does this piece of plastic havj+a;vwla x(u5 e?

  What is the charge on 1 kg odm2c9 qv*j3p tf protons?

  An atomic nucleus has;+ taljijkt m /,m1x io;9hpm7 a 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 2nmby 9v,f14lv*/pkq/asw dr values of 2.0 and -4.0 mC, respectively. 9 lpf4dr yqa2b1vks/mv*,/n wWhat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcel:gm:, n omtk, between them is 1.0 N. What i :,,m:mtknogls the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?mgg0- 14 bnw)pz4wfag

  The force between a d f17 vdk: ;b.szw);bhb5uucnocx+ f ,$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, eyns4e61xzy67 1a vjchp p zk-dl a* 5t,j.zv.bxperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric fo7 z.jb.pyt 45 116av,-kahs jev*n6xl dc zpyzrce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The firlumxdocv1o 5 i ax 3a8;w q7wys8xzp- s/q4.)zst 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 magnit po8wq1mz7v- uo zyx3 sa.8w4a/x dq;cs5xi)lude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cw:fb;shyuo5g 82 pr5jqwb /fq )e,v)x harge of +2.0 mC is placed at the origin, -2.0 m C to the ri)y pvw qoxh 2bs5)rfugef;qj85:w ,b /ght 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 at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC awjg k,hn8swg/7 m ma76t x = 1.00 m; Q2 = 3.00 mC athw m/g 7j87 gwks6,nam x = 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, ;rn(bi.;n*. n nuxhx( ,bc l):jpxj mqand a second point charge of -Q is placed nxq:l((mph c.j b rn, xjx*;i ;)bun.nat 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 = 5.0 nC ism4 ,c cj2al 2 ;lnon.ii9/znk(k0eibj at (0, 0). What is the magnitude of the net force on tce c a2kkmn;n,l/2in jb4i o(9izl .0jhe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 :b oim8.lkeh*bk 5sl3(o g kof/s:u4h nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of t uhm8e4s(*boo.3blf: kkglk5s/o:hihe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at )rtx4 q:-xujg+ ts9atthe 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 charge:at)s qrgu4t +9txj -xs?

  Consider point charges of +Qrfkzn+( ht03e/8 ot nw and +4Q, which are separated by 3.0 m. At what point, on a line between the zw0(th3 /ntr+kfe8notwo 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 charge is at x ;8 athq*suwnp,( q4m a= 4.0 m. Where on the x-axis can qsnqhp( a;m, u8*4tawa 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 nxod2+z:e8 :mqs4ngwrdb1x 5 rkm5 f 0= 2a. Where can a third positive charge +q be placed so that the fbo k2qndxrz:0sx4m 5:w 1mef5 rdn+ g8orce on it is zero?

  A copper penny has a mass zni+luv ,srw,rqr*;0 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 agadxqll rq0ssq (i a(..6inst the force of gravity by the attraction of a fixed proton some distancdi( 6 l.rsls qqx(q0a.e above it. How far above the electron is the proton?

  Two 0.20-g metal sphereslcir f wqfk8moa. ho(;d,9;u4 are hung from a common point by nonconducting threads which are 30 cm long. B,8 hif.9u4d cmq;w loorfk(;aoth 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 of +40e. What is the magnitude os )yy.6cdi 5 i-qd grra;c.a8ff the electric field at a dis.d s)6id -.fa8rq5a ir;yy ccgtance of 1.0 m from the nucleus?

  What are the magnitude and direction 2t:0*cyr zqui of the electric field at a distance of 1.50 m from *c2qz: t ryu0ia 50.0-nC charge?

  A 5.0-C charge is 10 m from a smaf7 y 1nas3gdjkkr-g++ll test charge. What is the magnitude of the electric field at the location of t7n s+kg1yk3 + ga-fjdrhe test charge?

  A 5.0-C charge is 10 m from a small test charge. :a+d0 r z1,uabztckhy 71zpc6 What is the direction of the electric fi: 1c0yc bh+,71z zazdpkartu6eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitm 0t.8 4y4xp:mt; 6q yhqpt53eqfmbphude of the force experienced by a 1.0 nC charge placed at the locxt3q8q546 pt. fqt0y:m ph e m;phmb4yation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distant xdb5 ig*f8k5ce of 4.0 m. What is the elex *fb855dk igtctric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0k;ji0aeg88 2j x jhx2b cm mark of a meter stick and a -4.0 mC charge is placed at the x h k20;ijjg2 xj8ba8e50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mpia6:4pa yve5ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point 645a av :epiypon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -u5 1n4t0o(6v p-v g(jy fmhseu7.0 mC are placed at x = 0 and x = 0.20 m. What is the mago yg(6-5mnh40(vf1uu etv ps jnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a sq0 ;/z7gpq1v)q7 ,jsl91 bhlyldbnlb tuare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find th9djts )p llb y,nb170 z;vlh1blg7qq/e electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges2qb9bz)bt.g 1kv :gu 6yt*keg 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 g1ezky tg 9ubb*6 :)kgtq2.b vat (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 y+ ls)ao8sy:yelectric field. What is the magnitude l)ya +: ysyso8of this electric field?

  A particle with a charge of 4.0 mC has a mass of5sg k8fc*xr-z i 8ke 8zrklg)q+./ebg o p1;jr $5.0 \times 10^{-3} \; kg$. 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 fielgrc 0k3jb25vx9zf4lgh psa 4 0d of 6000 N/C pointing downward. What charge must be placed on the ball r4g5pj 0flg4shc k3xz0ab9v2 for it to be suspended?

  A foam ball of mass 0.15+g d k3hvtt4 a710t mexz5j8ik0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is susp k7ath k8zm3e1jt4td xv0g+ 5iended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 14ti rvv7l9 /wfw0wqo ,0 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphewr9if,0w/o7wv lvtq4re's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W7u y4o6vo; ihv5 w)hiahat is the electric field 6.0 cm65o)v v4h ohiiwy 7;ua from the center of the sphere?