State the law of conservation of electric chcgu1u *ljt00lly(b 18q, g 1az(ahjloarge.

  Is it possible for two negative charges to attract each ot3 0 psjcq-tyz6her?

  Is it possible for a positive and a negative charge to attract each other?c 7.7ze/csir jsk; 4q;+h4tyx xpwa i,

  A glass rod is rubbed with a piece of sdqx) fqf79 vx.; ,en kjs2eoq7ilk. During the process the glass rod acquires a posi7fk2xe9vqf n o.7sx)eq;,qj dtive charge and the silk

  A proton carries a

  The model of the atom showx m j :;qbt2sizc 8r5: pwe:uy34dr(sns a

  A neutral atom always hasn fou+93::ou:9 zpt8ienb bms

  An atom has more electrons than protons. The atom z0 vt(gatxy, ma6f 3.ais

  Materials in which the electrons are.s* f4qr49b,v ayj .rs v5(edxq5xmho bound very tightly to the nuclei are referr dqs ,em(ohaf.rx v.* 59bv4jr yxsq54ed to as

  Materials in which the electrons are bound very loosely to the nuclei and casd 7lc-j-l8 6)fhmheqe-hr 2n u0v.ox n move about free8-udl0 o eqemhhhj .)f7s- 2rlc 6nvx-ly within the material are referred to as

  A negatively charged rod is brought nearyfe0bzr; *, on one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be char,fbro0;ez yn*ged

  Sphere A carries a net positive charge, andgeu159x vy1yo sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is ground9xe5y vyo1 g1ued. Which statement is correct?

  How can a negatively charged rod charge an electroscope positce+u,f; r dct5qm6n j5ively?

  An originally neutral electroscope is brief hi) 4ero:;uvaly touched with a positively charged glass rod. The elec;4h)eu ori v:atroscope

  An originally neutral electroscope is grounded briefly whili d0xea fmzo sao74h9)632)w2: yjswfu z8asue a positively charged glass rod i72aa)9sowuzj o8e z:ahyffs)xw 2is4um 603ds held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and thh)g69 j.asn*prvouo:n c/; mf e leaves separate. Then a negative object is brought near the electros s /:*ncam;6hru .gvn9of)o pjcope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insula6 k6kv( v/t-f gcv, qs1dpu.jhted 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 fol fvt 6.qvds,gku/-cj hk6(1 vplowed 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 1 oa8frr 5tja*Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separaterq 9;uqqhn(w(w;no*rd by a distance d. The first charge is larger in magnitude thu;9;(r *q hno(qwqw rnan the second charge.

  Sphere A carries a net charge and sphere B /* imh fymz3ypw/aq95 xn(9mcis neutral. They are placed near each other on an insulated table. Which statement bestpm93*/mxq n/c(yyiz 95mfa wh describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chli 3i5t 9g.f0vgyt1 atarges on both objects are doubled with no change in sei3 t1 tgl0afg95tiy .vparation, the force between them

  Two charges are separated by a distance d and exert k3;fq0 g c y5cw435:syijnq qymutual attractive forces of F oc4 yjiqy3f5q3 c 0nsk5ywg;q:n each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with la(g5lqk+(+hmxj h4y 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-fourth its orig mxaq(4kg+hll(j5 hy+inal value? The force is now equal to

  An electron and a proton are separated by a dim n +s.x00fxbhstance of 1.0 m. What happens to m0+x. 0xbns fhthe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance 0*xzec) u6 8gfw2qnbqof 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next toxn ef*26qu)c8qwb0z g the proton?

  An electron and a proton are separated by a distacf2 (c /wb.omince of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.502i.ccb f(om/w m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a 1. zp7qcr uzjky-d.e- 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 corners7c.dq ur. 1pey z-kjz- 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 equilaterab djttc-/;zz we/7pf0 l 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 the force that acts on theezwjt/0d-c 7bf ; /ptz center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is npa 0m/1st )sonot a vector?

  At twice the distance from a point charge, thefgn br. n*)3ve02jy4 osd2ukx strength of the electric field

  Is it possible to have a zebby j nv1p)*8zro electric field value between a negative and positive charge along the lin1 v*yp)jn8 bzbe joining the two charges?

  Is it possible to have a zero electric f( fl*nzkw nxm5-iw+m8ield value between two positive charges along *il+xw(n fm mz5 w-nk8the line joining the two charges?

  Electric field lines near psitigd)um p34y 6 1n 2xsnh-9qsokrve point charges

  The electric field shown 6)7 pul/hrj6behe z3s

  Can electric field l1 9e7v egj8,qax*sgcq ines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform e*veq c ep : 8-u+) rrxbbw)ftt(;zyby,lectric field. Gitb;e,prf:8y()qc ue*+-xw)z rv ybbtve a statement concerning the electric field in the block's interior.

  If a solid metal sphere an- qd2c,x rqq(wd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface isrdq ( 2-xwqcq,

  A cubic block of aluminum rests on a wooden table in a region where a uniform vrhp mm0)kd+hph vb7/(vx) v.electric field is directed straight upward. What can be said concerning the d(hv7)/kb xpv+0p.r mvh)hm vcharge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chanfoae. 7 khgm9 e6:*wxrge

  A positive point charge is 5 -szcjp7f+i l/ (gkbmlh 9k5jf1vk3uenclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollo-gv3 mllf5p7/k1jczjis5u9k + kh b(f w sphere has

State three properties of conductors in stat34i- kj/yw/cne s, zyfic equilibrium.

State Gauss's law.

  The charge carried by one azw7n8 p+oej :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 protons /t lj,(s6hm ig1rgz4f ld) .fbthan electrons does this piece of6 gmg4,hij s b .f(/r1t)fzldl plastic have?

  What is the charge on hjjzj,9zecgx s+8 3+zvv 6e6c 1 kg of protons?

  An atomic nucleus has a crk*br(g b2 d-+rant-s harge 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 mC, xxyz+dk 2qk 2*respectively. What is the magnitude of the electric xzykd2q +x2*k force between them?

  A 1.0-C charge is 15bk 4ci.jx 7m:h*2hog e m from a second charge, and the force between them is 1.0 N. What is the magnitude of the sec2 g4ihxcbh.m*o ek7 j:ond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How fa n0p/gc7e. k h0*qpaldr apart are they?

  The force between a ue*1g 9nc m2i7m6gu*fto ive8$30 \; mC$ 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. Ip*9 5vy0mrrswh c46 slf they are moved to a new separation of 8.0 s9c h y06rrp4ms5w *lvcm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-tb*;jl:;u bp / zba:xxaxis. 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 ;bpuat*lb: :zjx ;xb/the electrostatic force which acts on the charge at the origin?

  Three point charges are port8.o1 z7i 1xzdm qb 44u/yavlaced 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 electrostatixo.4dbzazr v 1 omuqy71/4 t8ic force which acts on the charge at the origin?

  Three point charges are located at the following)f:qp. hzgn/ p cab42f positions: Q1 = 2.00 mC at x = 1.00 m; Q2z2 f)h.g4:npfpab qc/ = 3.00 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 isi5sr 4b( jnetdd5*tpj-) 0ajve2l7t b placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an t-tdeepr7)s i(vbjl2 jt a55b4 n *dj0electrostatic 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);0rl9; i 2rsbaexche qx9 xl2*. Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chaslrx99q. xari;2ce b0*ex h2lrge?

  Q1 = 6.0 nC is at (0.30 m, 0 k18)inw mx7mg); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of 8)wigkmm 1 n7xthe net force on the 5.0 nC charge?

  Three identical charges o)gp g2,w.q) *s qrt7;axkvws df 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrots) xqsr gapdkg2q*)vw;7 , w.static force which acts on any one of the charges?

  Consider point charges of +Qzn4:/ *f6,xl5bzk *fua ohlan 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 *nzh ao/a x znl:k5f,f4l6ub*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 ld8gnqh nm*8 v xco8bo26t:)vis at x = 4.0 m. Where on the x-axis can a third dv:t ) m8onx88cbn6vqhgo* l 2charge 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. wnyp60e (cc +8qnyd;b Where can a third positive charge +q be placed so that qyw npcdyb6 ;8c+0ne(the force on it is zero?

  A copper penny has almw7m(6 ;ylkmh9 *w qg mass 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 against the force of gravity by the attraction of a fixedrg/7ls-x,w 387 txydo x,ynft proton some distance above it. How far above the ele d77 x/fnx8lyt , 3,rw-ygotxsctron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threarnpyi . -ofvn*1e7u 2 mt8)lpmds which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until thltyp8-.fmo7 e m nur1i2p)v*n e angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What iy ake3ph66 h:. n8fkors the magnitude of the electric field at a distance of 1.. 8k6ry kefanp3:h6ho0 m from the nucleus?

  What are the magnitude adbzoo *1hxxay7:ju( 6nd direction of the electric field at a distance of 1.50 m from a 50.0-nC chargeh o6 :1ay*j7uo (zdbxx?

  A 5.0-C charge is 10 m from a small testp yuhjf ydg/ ++m*):vg charge. What is the magnitude of the electric field at the location of the test charge?hudg:pv+y ) fmj/yg *+

  A 5.0-C charge is 10 m from a small test charge. What is the direction o pf2e0rw8pe6ff the electric fi 8ee 6pfp2wfr0eld?

  A 5.0-C charge is 10 m:n;yi y7k+welrh mw42 from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargnimh4+;y ryl7 2 w:kwee?

  Two point charges each have yrj v3dwfc f:k;ljxjbv./852 a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway f:. f8v;bkv xj cdjl25jw/ry3between the two charges?

  A 5.0-mC charge is placed at the 0 c1,)oav vu-dy7e3n g kpm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the el, 7 )kpua1do gn-vvy3eectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mar whci mspbm72 j:33v;bk of a meter stick and a -4.0 mC charge is plvs7 mhw323;ipb:bmjcaced at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 umhx.mg66et.g-fkuo9iv n )6mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electmof.g66it.v9ng 6xhuk-u ) me ric field at the point midway between them?

  Three 3.0 mC charges are as*8v0 ns2ku5yc fkw) nt the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field y*2wn s8 v05f)nc kksuat the center of the square.

  Consider a square which is 3ow* x l4.lgwna 3afr11.0 m on 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 (0ogrl. *xa3ln3 ww f41a, 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 mdr c +lv3uq)k v.x/2tlC when it is placed in a uniform electric field. What is the magnitude of this elec3q.vrl/ltv+ ukd2cx) tric field?

  A particle with a charge of 4.0 mC has a mass 3mx8. nt.shxvs /byq z; c:zhps)ds.5 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 placed in an electric field -+.r,m xk411x8 jhwqgkyz1upou5xs yof 6000 N/C pointing downward. What charge must be placed on the x8kq-x4y.1go+yrzuh 1wj u,p s15k mxball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Theuq(klxp 9k +hp ;xsj+( ball is placed inside a uniform electric field, and is suspended against the force of gravity. (k+x+su xpqpl;9k j( hWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrv+ia:fsw.7.lb i.s4 bwitl 1m ies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere'wa m7s.l iib4.ib:f.sw+l tv 1s surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the elect,nc0x w0 pzl2o6vkl.k 1onrr 3ric field 613ko.,lw06r2pnczkx vo 0 nlr.0 cm from the center of the sphere?