State the law of conservation of electric charf c(9ptx 9bb 8x*ff2qige.

  Is it possible for twotji 2xxwkvv)rd** o; d3,p (ib negative charges to attract each other?

  Is it possible for a positive and a nb1k f afc3r97jegative charge to attract each other?

  A glass rod is rubbed with bejo jr*okjt59(*u4 orb zk0) a piece of silk. During the process the glass rod acquires a positive charge an 5j 4eot9buk b (kjjzo**0r)ord the silk

  A proton carries a

  The model of the atom shows:6 ot2aue61zfa kw 1vt a

  A neutral atom always h hvdkw(6mq v)3as

  An atom has more electrons than protons. Thsg ;ugs; bz(.ye atom is

  Materials in which the electrons are bound very ,(q s*rub 7axutightly to the nuclei are referred(ra b*xs,u7uq to as

  Materials in which the elecje/ 23+ i/tc*qaztq eatrons are bound very loosely to the nuclei and can move about freely within the material 3*/aeqi ac/jz2tqet+ are referred to as

  A negatively charged rod is brought near one end of an uncharged me o+4eynu9e,cg8xzfn71 cpst(tal bar. The end of the metal bar farthest from the charged rod will be chargy9es ceg+o7ctzp4f(nn u x1,8ed

  Sphere A carries a net positive charge, and sphere B is neutral. They are placomdkpwx8cdmct.c+ca5 6b:* m jf. 3/wed near each other on an insw 8pd m k/cj.w:cbc.aft+6 mmd5 3oc*xulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively? bya5h 0w,fb/fsug21r

  An originally neutral electroscope icllkek2b9.k) s briefly touched with a positively charged glass rod. The electkk. k l29cbe)lroscope

  An originally neutral electroscope is grounded briefly while a posit89ogqswnh l c1*) pj)zively charged glass rod is held near it. After the glass rod is removed, t*jlgsp81) o9c )q znhwhe electroscope

  A positive object touches d/wtca mf,;g wm3z8)u a neutral electroscope, and the leaves separate. Then a negative object is w/wdc38t; za f ,gm)umbrought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulati whyj: 836akxfmqi. wd 20gf5ed 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 fhm5w 36d0wgiyixk ffj.q 2a8: irst 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 thecr c7pb/ou6 2,za p h:c8;hzbs)) kzhv Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firs45zv u1jydl y+t charge is larger in magnitude than the second chargey5+ylv41u djz.

  Sphere A carries a net charge and sphere B is neutral. They are placed 3,x0npg4pry26rqbeqy) yp w )xp 3l *unear each other on an insulated table. Whic r 6ublyn*yp p23yp)34e q rgp,xw)0qxh statement best describes the electrostatic force between them?

  Two charged objects attract eagttp:x0p v+1h ch other with a certain force. If the charges on both objects are doubled with no : t1pt0 +xvgphchange in separation, the force between them

  Two charges are separated by m;qcpg62 q6wttt8a sa2l 9p u.a distance d and exert mutual attractive forces of F on each ot66la2; p ct t9aqmg.s2tqw8upher. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eac(cye* + bes8yxuc y5;1tjq+a kh 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-fouj(1yq +u; yxcee kbys8*+at c5rth its original value? The force is now equal to

  An electron and a proton a q1mwou8 d)rc*re separated by a distance of 1.0 m. What happens to the magnduoq r*1c8 )wmitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are gur0g5igm v..y vlv;9separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a seconuig mgv ;0.9rl5.vyg vd electron is placed next to the proton?

  An electron and a proton are separated by a dista-(f7vdl5ln wonce of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to thndll5-f7(v owe proton?

  A point charge of +Qj z o+x- hhivz9ev,ju.c*c;)k is placed 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, ic-h9;jje)x+hz ok.z u,*c v videntical 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 hgp z4ax:, 4gzg;pn2ndvss .k8: vy8 cof an equilateral triangle. 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 tv4d2phy v,ggpks4xzn. ac::;8z g sn8he 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 isy ls/hvr8thn) ulc*38 not a vector?

  At twice the distance from a point charge, the strength o 0mrfce :qm; z a+jhn) +8+m8z*xofgpof the electric field

  Is it possible to have a zero electric field value between a negative and p4; 9nmpk 4bprauy 3 kb/a6bj.rositive charge along the line joining the two ch6 /4upk 9nykmrbp4;br a.a3bj arges?

  Is it possible to have a zero t. 40ha ld tdrxwm92w9electric field value between two positive charges along the line jorwdmw 9 hlxa.t0dt492ining the two charges?

  Electric field lines near psitive point charc. +ha(lxm rqw(jwe o7 +8dlrxu53;loges

  The electric field shugva+r(9s 0peown

  Can electric field lines intersect i ymq xs9w d3u j6v4ha-v/:nd*cn free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformatjl5t4u 4s69 a yq*f u+hbc+u electric field. Give a statement concernit tasb+ualf u4hq*4c9 u+j 65yng the electric field in the block's interior.

  If a solid metal sphere and a hollow metal 19 p+58qqht s6g2mdiognx;qnsphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the 5p 6s9qmntqgx g2ohq in;1d8+ surface is

  A cubic block of aluminumh(vw)jm.m8: aurg 7mx rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t .mm wg)m78urv: ajxh(op surface?

  If a conductor is in electrostatic equilibrium near an electrk;1 6mb *oxjd-feww- f( dy(koic charge

  A positive point charge is k:/0j:ht9 +u dowr6ivx -bdbdenclosed in a hollow metallic sphere that is grounded. jdu:+rxo bdhitv0k9-:6/ w db As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertie hb39vpta:-3i b;shhi1lc4mw s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by oneg ew (+co-/ctb (kce6fso 7bt. electron 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 charge of +2.00 mC. How many more protonsw76 r mik mcen*x.i-7g than electro.miecn7k x7w mig-*r6 ns does this piece of plastic have?

  What is the charge on 1 kg of pronf8,o umk4117z, vwf k/ilbhntons?

  An atomic nucleus has a charge of vu9u3kprwf4jcc 251rprz;w.fg /ai ( $+40e$. 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 o6(s q2/lps edsd4b -z07fwo ppf 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f slw2z bddoq4/esfs7p(p-0 p6orce between them?

  A 1.0-C charge is 15 m from a second c)g/op (4vn+ fqbyz0d xharge, and the force between them is 1.0 Nz)pqx4/ nog+fv b0( yd. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are a98 k rjm z/.pcd-q9icthey?

  The force between a fkc3jn bxi5;ye,+8 cn$30 \; mC$ 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 ;s) a0 97fd)tajuh prjthey are moved to a new separation of 8.0 cm, what is theh upj9d0a)j;7ta)f r s electric force between them?

  Three identical point chargld:p i0(45sz,jnze kges of 2.0 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 electrostatic force which acts on the charge z4pksi gl e:(,n50j dzat the origin?

  Three point charges are placed on the x-axis. n6 foi om c;9 90kvj5p+tiid/l 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 direct o9i vmt/9 +f0npk5 ;ij6ocidlion of the electrostatic force which acts on the charge at the origin?

  Three point charges are locatediydmclv- w b9 b;-(an/ at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1-9 bil ncvy/d-bm( ;wa.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, a i 7nm/bor5xp.p9/f97p wmecb nd a 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 center.eri 7pmnf x 9cw9.o/ppm/5b 7b 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 j)8e9v ,dhkbcis at (0, 0.10 m); Q3 = 5.0 nC is at ,8 kvbce9)hjd(0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC iss)t6 utg.s-u(3 f; qugw k 0ptv4es6gk at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on th.gg4ksvfu ku s (t 63pqt;e)6g -stu0we 5.0 nC charge?

  Three identical charges of 3 x8n3xtc;i(0s,gtkl 8c3 sx rp.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What ikg0;tr83p 8tc x3sxx(cn ils,s the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charg*t;jdw0pez 8 tes of +Q and +4Q, which are separated by 3.0 m. At what point, on a p 8djw;t *et0zline between the 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 vfm+)5j u/mzw = 4.0 m. Where on the x-axis can a third charv/mm 5f wzj+)uge 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. Where c .p+iykrf 3445kt iezyan a third positive charge +q be placed so that kyk.3e54i ztr+pf4y ithe force on it is zero?

  A copper penny has a mass of 3.0 g. A total (0 p )xc(wrfu2kurt(cof $4.0 \times 10^{12} \; electrons$ 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 attraction of g.wp/vd7 uqaoux + o52a fixed proton some distance above it. How far7pa vqw5uod+.x 2u/og above the electron is the proton?

  Two 0.20-g metal spheres are hung from uyce u1o t3r-qf 24q2da common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic -qteu 22cfoq3 4y1ur drepulsion 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 magq u+p,ildcj(o* o61svnitude of the electric field at a distance of *o+1vljs(duo qpi , c61.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a difq+4ba1 zl/ tdstance of 1.50 m from a 50.0-nC cal/ft z4dq1 b+harge?

  A 5.0-C charge is 10 m from a smalitpp c n)*y+)bl test charge. What is the magnitude of the electric field atbp t)*i+cpyn) the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whvrm+h;z 1s(2q abjs)6cik :lhat is the direction of the electric fich:k2 1(h rvas)is6lj; qz +bmeld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude tq* hz0 wwb5,g8rh t6f: oi*lfof the force experienced by a 1.0 nC cgz:h 0i 6,bort58fhflw*qw *t harge placed at the location of the test charge?

  Two point charges each have a value of ax s)ulp2 8(n : u; 7kjkh,o6vwvnp6xm3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between (ow,lu 2nxj; ah6)x7knpk sv 86vm up:the two charges?

  A 5.0-mC charge is placed at the 0 cejj/cxm5 1d; cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm xjdcc1mj5;/e mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an + 3nro *5nm0z(c-i2osztp npid a -4.0 mC charge is placed at the 50 cm mark. At what point on a cp *ismo2+zp 5-3t 0(i nonrnzline joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ans 3)/nf1 *q r8jyoq3b,a d.oheum ijo.d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?o*rjhq 8sj .1)i o,3q/ubf.nmd3ye o a

  Three 3.0 mC charges are at 2tr6aho dj9r ;x3lm7 rthe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fie;d97x ahml 2 r3jrto6rld at the center of the square.

  Consider a square which is 1.0 m on a side. Charg6) 6g cdby5 zy hfcpoti;*bu)2es are placed at the corners of the square as follows: g2 bhct)*ziybup)5o f6cyd;6+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 cha:7+(qjcha,v nrgsl )l;.p jhfrge of 5.0 mC when it is placed in a uniform electric field. What v;gcp,hs q+.f7rn( j:aj)h llis the magnitude of this electric field?

  A particle with a charge of 4.0 mC has fxs1ru ,f te55a 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.ant. *,oizfd2 3g2+y .q uucls8d e mbdtd50q)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 be su.5t0,u.)ine sctgdldq u+q*2m3ay b8 fd zod2spended?

  A foam ball of mass 0.150 g carriesy;, coequ.me5 a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. qoeue y,c5;.m What are the magnitude and direction of the electric field?

  A metal sphere of radius y 6z +xr5vabb:10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field: 6+5vbz arybx 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elecukam z.8( ae0 i+0uqdttri8az qu .k(mad 0eti+0uc field 6.0 cm from the center of the sphere?