State the law of conservation of electric chargedl)lpi.m - sp+i(frhx -nj+/g.

  Is it possible for two negative cha b:;9 .-ay bwgyckxp;erges to attract each other?

  Is it possible for a positive and a negative charge to attract e7yi1 x73:3 edgiktimr ach other?

  A glass rod is rubbed with z.dfyh*:ug5 ia piece of silk. During the process the glass rod acquires a positive charge and:yg.5zi ufh *d the silk

  A proton carries a

  The model of the atom skx fw.ul(6u)o9 w;b +t,lwjpthows a

  A neutral atom always hao6:ko-t +a;h8tu1 bza- hom cqs

  An atom has more electrons / 5xgt,f d:qwm;ba x15yqc jv:than protons. The atom is

  Materials in which the electronsfe(i 055el aj vfw m/ q-tot(3,e(bw8v0atvwt are bound very tightly to the nuclei are referred to asq5btflw0tti v wte(( mf0eea/3( 8jv5-wa,vo

  Materials in which the electrons aroqd6m7ob.gs5zx3 npua*2 /i ap w*bt4e bound very loosely to the nuclei and can move about freely within the material are referrptw bi4sg*.x qb3m *6au n2od57a/opzed to as

  A negatively charged rod is brought near onf+a uv0. ujnxpulr 37+e end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charl a0x+u vpr37j+.u nfuged

  Sphere A carries a net positive charge, a kpkw 2haj -2jrg,4 jpm97cs;rnd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touhp s2;m ,4pwkrjg2cr a -kj79jched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod char7hn+1hx bu pn4ge an electroscope positively?

  An originally neutrak03l;z7pvl.cn bgvm7aa uy 3.l electroscope is briefly touched with a positively charged glass rod. The electroscopez0ck apbla;uv yn3m.7. lv37g

  An originally neutral electroscope is c/ve f 4k ;r6zh4.jpkcgnw;dxlu0t1 7grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, juxlz;10fw 6nc4c pg.thderv/ 7k ;k4the electroscope

  A positive object touchesh161z gt-etyng:xxx; a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thg -e1;ty 1thxx6x :ngze leaves?

  A large negatively charged object is placed on an insulated table. A neutrsa*x-il l 9f3c/vcu*pal metallic ball rolls straight toward the object, but stops before it touches it. A second neutral-*sx /luf *ip vcc3a9l 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 Coulomb c1 fz8 jix ,ozjw.kkl80fevu- 7mdn0u.onstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger iwq nl96a,t u;hn magnitud9q,; hw6ant lue than the second charge.

  Sphere A carries a net charge b*t8 .y:d ok 8o7unlpx ivt:,nel,4nsand sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betlt8b8 n , pot7uxi*,vk4n:nlo.e :dysween them?

  Two charged objects attract each other with a certain force.bbw2vtc tj3rn) .7 9zv If the charges on both tc3 t.wnv9bjb v)z72r objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractivklz( e22:tmqu-b:6psg/nn uqg69yspe forces of F on each other. If the charges are separated by a distance of d/32g :6/9ltmq 2nsq(n6sb- z ykupgue:p , what are the new mutual forces?

  Two charged objects attract each other with a force F. What happen z2yx;mz 4imr q.:mb5cs 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 its original valu2b.x;mm 4qymr :zci5 ze? The force is now equal to

  An electron and a proton a;28dk o 25pcfv/( shojnxy)lcre 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 next to the first ejc/2p n5c)d( h 2;xofolsvk8 ylectron?

  An electron and a proton are separated by a dit;kxzf) fn. q.cc ;ex(stance 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 protonncc.)f( tx.; ;k xfeqz?

  An electron and a proton are separated by a distance omyk8tb/s,rq+; f) l9s/fu mqgf 1.0 m. What happens to the size of the f;ls/ fs fmq+tm ug ,k)q/rb8y9orce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ceqg 7q t1v+s83etnnu:unter of a square. When a second point charge of -Q is placed at one of thu 1u stnt7:v8qne +3gqe 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 charge at the center of the square?

  A point charge of +Q is placed at the centroi,hrg7+vzg -ob0s1sz:dgqs6 v d of an equilateral triangle. When a second charge of +Q is placed at one of t 0g+d7g g6vhz1q vr:osb,-szshe 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 vector::vtr dwz6 v9n?

  At twice the distance iyw:5ds / )mx;pl.7q6oiwc.v xs7arx from a point charge, the strength of the electric field

  Is it possible to have a zero electrijvf pb85amh+ 09jxpd5s kj;+ wc field value between a negative and positive charg ws8p 5a pj0fxmdb+j;9j5kv +he along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chab:rv6v:v z.tx7e;3x ppcymk0 rges along the line joining the two charg:0p t7cxkp:v3mvze. x vr by6;es?

  Electric field linesgclea, :anu yqk1(9tx 8qvee e;l1g.0 near psitive point charges

  The electric field shown dw 1y p egv39(sa4vsk9jh-r 1w

  Can electric field lines intersect .pghzelm*d:7swtfdi-o2q6 4lql 4 +ain free space?

  A solid block of metal in dmt 3o; 61vuznelectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's inteud3z 6nvt1m ;orior.

  If a solid metal sphere and as3u,s (, .huhq yzdctr)hl( b2 hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midwaythu b,h3).cudl ,zsr(s h(2q y between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whg:i q )*28ud zm4xwiuhmjr mg(mr:8m ,ere a uniform electric field is directed straight upward. What can bmu:z*:mum h8 j8gm xw 4g(di)rr 2im,qe said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equi w)nw b.jv9 k7slzn q4g4-*mghlibrium near an electric charge

  A positive point charge t-(at7 voa (r6 tyi*shis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fiev(6-ty a tho*ris ta(7ld at a point directly above the hollow sphere has

State three properties of conductors in static equi9 + oe*jxof0jcf ug(,glibrium.

State Gauss's law.

  The charge carried by one electron ijjcixn nlz,ur) r;;u0i ukf6 ,whuar;-;fn9; s $e = -1.6 \times 10^{-19} \; C$. 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.x,l s7 o fq(s;g.mbhgb be*a(1 How many more protons than electrons does this p(s;gea7lg1xs f, om bh(*. qbbiece of plastic have?

  What is the charge on 1 kg of protons?5tym3 ;fd jnntn51t6t r 2d)tl

  An atomic nucleus has a charge ocn9z: )8n runrcl/; mjf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 6d+80pkpr oeaem vfq 3 bd0wcjwi)y38 )w3q, xcm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwepw3m8ww +ryjqvo, )q63a0 bee)d0cfxip 3 kd8en them?

  A 1.0-C charge is 15 m from a second(s3 gn (*rrkgl charge, and the force between them is 1.0 N. What is the magnitud r((g*k 3rlgnse of the second charge?

  Two 1.0-C charges have a force hs9u5zo veq8 udf/d79nkbvkd3-7d6 pbetween them of 1.0 N. How far apart are they?

  The force between a 7rv*(dsvd 2 h,1l1 aqfl9u duv$30 \; mC$ 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 eoutzr3zbro+:m;+3 a) p+lrxww * ,w tthey are moved to a nrxlzz o3pwtarrm+); +*w+ ,bout3 :ew ew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. 0y-sh8+/ kb gefu1goc v2bz)x 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 direcesfx8+ y1bzgcuovgb-k) 2 /h0 tion of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on rxem2nq -,p7 wg7cl6qya)qqk ,k gp 7*the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rightreglq,7 2cmpw 776k,gqypnkqaq - x )* 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 aotf,6wsj *x s+ f9b/x( dvj0oat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a tfo9o+ xjvx/js*b6,dsaf( 0w t 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, and a second point cza. 22.q ihzcc*o(jlex 41aisharge 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 xhqi. oa .4izcsl*1ze2c2j( athe 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);+zr pcv* y*yr; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netry+rvpz* * yc; force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, iao.. gd +gxs2k- bf9s0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 aki .g+f9.sog d2sbx- nC charge?

  Three identical charges of 3.0 mC are placed atdbp6 je c7r15p.*j lgw the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude*5lb67 .pjewgdrjc p 1 of the electrostatic force which acts on any one of the charges?

  Consider point charges fh6/kp)po bxes1 ,x)eof +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 such that the electrostaticx 1 s)/6be)ke pxfh,po force acting on it would be zero?

  A +3.0-C charge is at the origin anppks4klz+i:hz;y(5c d a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pliz4 p p(;5 z+ylshkkc:aced so the net force on it is zero?

  Charge +2q is placed at the origin and charged: h:sveodl r,ew;;lnl0mi 96 -q is placed at x = 2a. Where can l vn s il6m0:eed,w;olh;dr:9 a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a nng8s) , t-7 k-lpq0rpuer(nny8(z elmass 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 againstav41lu,mrzex 9 9 azk2 the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proto4 uazm9a, xzr1 2evl9kn?

  Two 0.20-g metal spheres are hung from a cof hrd:a2eief k), 7(urmmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between(7, e)rfeh darfku i:2 the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4 a8sl sto mf2 5/.y(ndmfgf:5u0e. What is the magnitude of the electric field at a distance of 1.0 m from the n2 nlyf/d:fusg mst8mf55o( a .ucleus?

  What are the magnitude and direction of the electric f iho.j29c(wbzdj . dz9 ne)jb3ield at a distance of 1.50 m from a 50.0-nCow jd(9 3zn. dbbcji9jhe)2 z. charge?

  A 5.0-C charge is 10 m from a small test chargelad(vxqt* ;7chf x715m )gxba . What is the magnitude of the electric field at thlgdhx)fc7xv;1 *q7ma b( xt5ae location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wi9yt 7 yrory4kswa.03hat is the direction of the electric fielt ys7 y34wyroi ar90.kd?

  A 5.0-C charge is 10 m from a small test charge. What xhsmm 284plrqwl))0zis the magnitude of the force experienced by a 1.0 nC charge placedlw)20mzl)rx pqs4 h8m at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc1hw2dum4ki0hj /90* ap5n,br3 , qypku gxpvme of 4.0 m. What is the electric field at a point midw9 da/p,k*wb h2i 5kq 0jm0rpgvpu,yhx u3mn14ay between the two charges?

  A 5.0-mC charge is placed at 1qd gzg:r:yw c1 , vg(qufr7k)the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm ma cz fqq:g,y(drgw k)u:vg17r 1rk. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a ).2lo zznw 2j g 49:lijm8fejk-4.0 mC charge is placed at the 50 cm mark. At what point on a line joiniklm) ljneiwo: 9 2z84fjg2j.zng the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are cnj49g z b)2cpri)o 2mplaced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poi )c b)gzn4j2rmp9c2o int midway between them?

  Three 3.0 mC charges are at th),z4gl kg /foae three corners of a square of side 0.50 m. The last corner is z /kogf4)a,l goccupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at -7rulcc f 0;hbthe corners of the square as 7b -r;c0 ucfhlfollows: +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 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 plapr4fd 1 k qw+mami(-m7nooc-(ced in a uniform electric field. What is the magnitude of this eloc74-q pm+k 1a(w( mfrin o-dmectric field?

  A particle with a charge of 4.0 mC has a mass of.8rsqzt s )7b4x gf2oy $5.0 \times 10^{-3} \; kg$. 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 poi/b b 3kjs0o(dfa8 ohd5nting downward. What charge must be 3fjdo80bab5o dk(sh/ placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g alyz 1)jpu+l ozv24 d7carries a charge of -2.00 nC. The ball is placed inside a uo +lu)72j4lad v1yzzpniform 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 of 7h8 5my/5v a c hizjg;tff7f5p+2.0 mC. What is the magnitude of the electric field 5.05mcf v5g 7tjp i; 5yaf7fhhz/8 cm from the sphere's surface?

  A metal sphere of radius 2.0 c( veqrxkrf5 tp9ll0:-m carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cente9elxrk 0v( tqrp5l:f-r of the sphere?