State the law of conse* 4hi4b:a argvrvation of electric charge.

  Is it possible for two negative charges to attract each;mrw.j7 j,:ux5vog(lj(dxek): z grxl ;lp, h other?

  Is it possible for a posit1g4pxu1 j /lkeumw hg9cl+x() l kiyl+vh5*/dive and a negative charge to attract each other?

  A glass rod is rubbed with a piece.c, axkzjuy4nj/a-g .m/+ign of silk. During the process the glass rod acquires a positive chaky4ja cz/-xa+ /ijgm. u,gnn .rge and the silk

  A proton carries a

  The model of the atom shows1wt 2 4wm:w77x 7xmippxco3 ii a

  A neutral atom always aa:m9a 5. eppghas

  An atom has more elecd3ieh*qiq i k*j2+ql/trons than protons. The atom is

  Materials in which the electrons are bound very tighcwyf/r x xq2i 8-jd3:/ejxx+c5 zqn3ytly to the nuclei are referred to asf/xe3:n+xqy 5z3 yrxjix82 wqd c/j-c

  Materials in which the electrons are bound very loosely to (1vr* mi o 1xp7(cjqrfthe nuclei and can move(7pjm 1i*x( cvrfqr1o about freely within the material are referred to as

  A negatively charged rod isu6::ji4/bfz2zx guo kv o 6+ 4uvqm2gy brought near one end of an uncharged metal bar. The end of the metal ba 226v i/qvu uogbo:u4jzkf+x64 ygmz:r farthest from the charged rod will be charged

  Sphere A carries a net posriqt1ix*ns kzvj 1w/(s1 ( 0wyitive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with (vys/0w1i( jikqzn11*wrts x a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an0xbo (coatolc7x-5 y * ta-e y)b(an3m electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charge; cko2stq r1uj,i 88js*njc;fd glass rod. The electroscopk;jcu t s1sncf o288*;jij,rqe

  An originally neutral electroscope is grounded briefly while a ytet z1f5 m9* c3iqjj7positively charged glass rod is held near it. After the glass rod is removedtt*9qf5 ji7 ec3yjm 1z, the electroscope

  A positive object touches a neutramguchn6q5 a(-l electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does n6 -acmg (h5nquot touch it. What happens to the leaves?

  A large negatively charged object isqpn 0( rll2r k(-lux4g placed on an insulated table. A neutral metallic 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 object. At no time does either ball touch the negative object. What i 4l kn(l2-lu0gpxrrq( s the final charge on each ball?

  Charge is

  What are the units of the Coulpq z;3xpxo,e yke(p7 8dn c sq-pa(+b9omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l3jqvo9b*4 s xdjz9u b3arger in magnitude than the second u 4*j 9vxbsd9zqo3jb3charge.

  Sphere A carries a net charo8c ew *oud0anb(fwg 9.w hxs*6w+ bt,ge and sphere B is neutral. They are placed near each other on an insxsw dw o0+u.8otn*wbg ,ca*6w(bf eh9ulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. I37n 0.+(vjgqbs*gazgt ef- qrf the charges on both objects are doubled wiv* tr-q7(bjgs zg . ne+fa0g3qth no change in separation, the force between them

  Two charges are separated by a distance d and exert m)oqj3 vf9.d hautual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are t9)qo3f hjv d.ahe new mutual forces?

  Two charged objects attract each other with a fon02 b*j ac0umsrce 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 reducedb 02* umnjacs0 to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a t r83is jhtnn gjwhz9 0dm k*)nbw8,-2distance of 1.0 m. What happens to the magnitude of the force on the 8w s 2i mzn0-3k8jhjgtnnd)rtbh*w 9, proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0o owu)jrlg .;xp)m se:l+:j w6 m. What happens to the magnitude of )lx; ljjusr+)o o:wmpw 6:eg.the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepd om08 -nkfepp4qq6 ; 6 sqjh, m;bxel.x2qjc6arated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron i;scmjqjm86q6h x kobpnd;xp-f2 6q4q0 l,e.es moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a:x6 0ymgqr* ;b zqtc+t 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 cornqbgtc:m +z;6 qrtx 0*yers 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 triah:s:w2 + esz bm:6k6a8kijx hxngle. 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 thirx mbhkx:s6+jkeizsh68a ::w2 d charge of +Q placed at one of the other vertices?

  Which of the following is not a vecto9yb t -pf 2t4, tfizvvvu*pdrzh7//6er?

  At twice the distance from a point charge, the strem71 ym5 mu9lz ,w:bk/yk7leasngth of the electric field

  Is it possible to have a zero electy - + l on63/e.2r8pjkbble36cnlkvz rric field value between a negative and positive charge along the linejrp l-26b/e . ynkzr+lc nbl3v3e6ko8 joining the two charges?

  Is it possible to have a zero electric field value betweenk +bqrdv ,o2q*ap9 lj- two positive charges along the line paov-l9qrb *j+2kdq, joining the two charges?

  Electric field lines near ss idomw ;.5;wpsitive point charges

  The electric field sh51nd tfg :ti9)p)tht xcy xb.(d g3n1xown

  Can electric field li 5a pafs,:1l;o6nl 4oehpza1p;qq7 qdnes intersect in free space?

  A solid block of metal in electrostatic equilibrium ibk 6vpoa91s. xx6 36kt7qt qsgs placed in a uniform electric field. Give a statement concerning the electric fietsq o3ktv bp6xq91k6a 6xs7g. ld in the block's interior.

  If a solid metal sphere and a hollow metal sphg,ct) zzj7p c/nq,fk, ere of equal diameters are each given the same charge, the electric field (E) midway between the center and the s,czn), g/,fjqzkptc 7urface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform+.pgoijwgcxjm9,m/d 2fl: )gb ,zbr4 electric field is directed straight upward. What can be said concerning tl:,p9d4f x /)wjicjgrzmmg2. bbo+g, he charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chart g4vp7t-c bz+t6 i8eqge

  A positive point charge is enclosed in a hollow metallic sphere that is grou +gjiupsi kvv,td-opl56 /7*knded. As compared to the case without the hollow sphere, the electric field at a point directl6o-/iigl vd7 , sutp*+jvkkp5y above the hollow sphere has

State three properties of conduwh-w 93in j8d2lpkzk 6ctors in static equilibrium.

State Gauss's law.

  The charge carried by one ei,m gl8dd;s n /ths(1nlectron 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 haj8 ylgdv 5ulwnl h/pke1.e7:0s a net charge of +2.00 mC. How many more protons than electrons does8n1 d.05ee7/gup: kll wlvyjh this piece of plastic have?

  What is the charge on 1 kgqet.jr z*wh ut--ft2 * of protons?

  An atomic nucleus has a charge ov+ymd7wton1ezc39n pibiq+v 0 .vi8 1f $+40e$. 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 chffn easy tf+rb19m iyk5. a1+0arge values of 2.0 and -4.0 mC, resnfyama ik.r1 +f e109 yb+tf5spectively. 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 thek)u d rhm7-wah ds5f(y3ot.p)m is 1.0 N. What is the magnitude of the secondskutyp w3.) frh)75d -(dmaoh charge?

  Two 1.0-C charges have a force between them of 1.0um//ngv1p-utt zsnmeu2e/)s-s3 v9 k N. How far apart are they?

  The force between a q/zmsa9g7c 4/zfhbsq /l caux2 hw;00 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially jfmn6nr9 2hup212rh m 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betweenrr2n2 hh1umf 9pj m62n them?

  Three identical point charges of2wol ,q koxn87l k-uiz7n1 r1d 2.0 mC are placed on the x-axis. The first charge is at the origin, the secondzn1owr,nxi8 lo7k kd7 12- lqu 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 acts on the charge at the origin?

  Three point charges are pl -qp.7vl6dkut aced 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 electrostatid tl6.pu7 v-kqc force which acts on the charge at the origin?

  Three point charges are located at-yb +4 bx3vvs -qpn77fen0zlp the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.xzqvb- pf4nl-77e n+sy3v0bp00 mC at 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 aa00i -qr8cjj g-pm f9z 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 89a--gcm0rjfi 0 jzqp 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 5u mzj3dro.rbxss(4f**wq6t qsq.;c is at (0, 0). What is the magnitude of thrm 5xb4z3fj*t;sqs.6( qowrud* . qcs e net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Qxd( 948hh0u3fnj*ghd( de hr .n*skme2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcek4 xd. *j( 9useh mfdrge3n*hhd 8h0n( on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of x.n(ryiar s76 an equilateral triangle which measurea r7ynsi r.6(xs 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 +- b5gc; .z2qmhoey+kf4Q, which are separated by 3.0 m. At what point, on a line between th;2.-zf+b mkyce5ogq he 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 charge is at x = 4.0 m. Wpv:i p4d koykjz:d(q z;fl5;1 here on the x-axis can a thi;lz1pf(45k zdpio:;j :qv dy krd 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 = 2a. se f c-/ny,vpo(o,0flWhere can a third positive charge +q be placed so that the force on it isolv ypo,0s/ efn,c-(f zero?

  A copper penny has a mass of 3p; mmf410 itct.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 against t: lat r-d9c5 oxz)vw qb frso+0qkv9 v:b)v27lhe force of gravity by the attraction of a fixed proton s5))+l-:vwr q9vbvc9o x2s0l zbd t qkrf7ao:vome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductinh)4k.s6 co smrg threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thr c. 4mhok)s6rseads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a char2 2o lrh/ejgs0ge of +40e. What is the magnitude of the electric field at a distance of 1.0 m/ 2grl hj20eos from the nucleus?

  What are the magnitude and direction of the electric 7onr/5bvy vnxay.-p . field at a distance of 1.50 m from a 50.0-nC nav5-ryyv. n/7xbo .pcharge?

  A 5.0-C charge is 10 m from a smao1 oj8y8x tegeujw .f:4 ;fdkh99p 3pvll test charge. What is the magnitude of the el ; f9j gp4ue3phktoo1y9v8e:w x. fdj8ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small 9wt/ r6dy snbla()xh29wahqh(0 fd5x test charge. What is the direction of the electr 5 wrxt29sah /wqdn0ylbh 9af(d h()x6ic field?

  A 5.0-C charge is 10 m from a small tes.cmx(kappjo,9z ku 07t charge. What is the magnitude of the force experienced by a 1.0 nC cp px, 9o7uj.0kc kaz(mharge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separbu ,)9y2 njk 63idjwghated by a distance of 4.0 m. What is th, y )d2ji9ujhg w63bkne electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at tv yt) 0 u9xo5frjxk/d:he 0 cm mark of a meter stick and a -4.0 mC charge is placed at 9k0)d/ :j rouxvxy5tfthe 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cmsh:v(zyey:3 q mark of a meter stick and a -4.0 mC charge is placed at thh3 vzqe syy(::e 50 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 -7.0 mC are placed at x = 0 and x = 0.20 m. Whye +ui)g3 ayc-at is the magnitude of the electric field at y+ -)3ayecg iuthe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of f4 hv(g oyevs+4keh) )side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the s))+ e4vok (f yh4hegsvquare.

  Consider a square which is 1.0 m on a side. Charges are placed at the coh4mv /ctd2 h/1sq+ny hrners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1hq+tvhms//h 4c n2dy1); +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 placed in a uniform elewtzhgd*fbwo.m 9 q /0;ei z,5gctric field. What f hw.i; /zemzo59b d0gtq*,wg is the magnitude of this electric field?

  A particle with a charge of 4.)ksnaokz b z+ k-w64 tip04te78*ylb o0 mC has 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 placedxz3p 3xjr1p.zq s8a,g1yqu* m in an electric field of 6000 N/C pointing downward.muq xpp*g,s. r1y8x1zaq33 zj What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries12pt6+vqp fn,-3ltfjcm9 crh 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 magnvr mfpt12t- n3j q96pcfhl,+c itude and direction of the electric field?

  A metal sphere of radius 10 ixe8( u4yx wr+cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from theui(w e8y+xx4 r sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e1mfus: p u(j*9c c-emhlectric fie: (f9msumu *cjc 1ep-hld 6.0 cm from the center of the sphere?