State the law of conserhd 6km sttf2gkifn1b :5i q5f/lh0y97vation of electric charge.

  Is it possible for two negative charges toc+/x0d8k2 sw k-+b3 irpx-vtecd cvm- attract each other?

  Is it possible for a posy r j(7pr;(sihitive and a negative charge to attract each other?

  A glass rod is rubbed whr4m8a9: w yuh29qyc,slzj u)ith a piece of silk. During the process the glass rod acquires a positive charge2)9hlauyz8:hm, 4jr wyu qsc9 and the silk

  A proton carries a

  The model of the atom shows a uqq,6f jje3 eco9z(b1

  A neutral atom always h;j)za/of g1zuy+ k.slas

  An atom has more electrons than protons. The a8 ;7ub9opwei36 h r 2pwwj,jwytom is

  Materials in which the ezo 3lsvgrr/,et 5fs7+lectrons are bound very tightly to the nuclei are referredl e7r3s gfv,/to zr5+s to as

  Materials in which the electrons are bound very loosely to -dq rb 7 tvs7l,g-zekcgs-0d)the nuclei and can move about freely wibcl7-d vgetq-r kd-)07,s gzsthin the material are referred to as

  A negatively charged rod is brought near one end of an unchy3pbgl3 tkh6p0 .)e d0ut7 kfearged metal bar. The end opy 6dk3lfth3k)tebe.00 g p7u f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positivaaw7dv5oi+a* :d e 01,armpi1e a1ldk e charge, and sphere B is neutral. They are placed near each other onrd ,a 5lw+em p1ek*viaa 117o0da ia:d an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eq e2qj.n j1u(wbj*k pb(g 5qv*lectroscope positively?

  An originally neutral electroscope is briefly touched with a positit.ndhjal on;j2y 8/g3vely charged gla2t yjj 3o/dl g.an;hn8ss rod. The electroscope

  An originally neutral electroscope is grounded brief h5z7dz.,ug b8lup,bhly while a positively charged glass rod is held near i, ubzh,ghz.u 5pl8b7dt. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. T y e q29sujo 7gog3zvu:,5*qryhen a negative object is brought near the electroscope, but does not touch it. What happens to th,9oq:3y jgz57eo yuq2urv g *se leaves?

  A large negatively charged object is placed on an in8k 85qw1+ptvrit7fym sulated 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 d iwmt+tyk7q 88rv f51poes 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 consga w-ucv4pt1wn;b.-s8- kdd b tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dista onvbw 1n,,75w ec3dmjnce d. The first charge is larger in magnitude than th3 n 5wdv7,obj wn1me,ce second charge.

  Sphere A carries a net charge and sph7r / ).d3eej)g;eh j3qutqslnere B is neutral. They are placed near each otjujqltn; d7 3 /eshe3)g)q .reher on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a cer81kz; v*tipqgn1 nob 2tain force. If the charges on both objects are doubled with no change ig1itbqnv;zo*p n21k 8 n separation, the force between them

  Two charges are separated by a distance d :fg)zdhzkhcy */5 h9gfoe +i( and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the newgod i/f9 h*hegh:z z+ (f5k)yc mutual forces?

  Two charged objects attract each other with a force Fd81z5e7g-a:5 azlm b+nx3mbls:jni b. What happens to the force between t8bbdibjn z5xnag1 l m+ :s3em-z57:al hem if one charge is doubled, 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 dqklxd zqz0ix 76q1x;-b i*kt.istance of 1.0 m. What happens to the magnitude of the forcil60x ;zq. x b1 zxqqt7idk-*ke on the proton if a second electron is placed next to the first electron?

  An electron and a proton are n.0p2-jra zah separated by a distance of 1.0 m. What happens to the magnitude of azp a2-jhn 0.rthe force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.scowp8-*bu/lsl p1 5w What happens to the size of the force on the-lsuo/*1wpc lb5p s8w proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whe;0qwja1 0lj1c e+ufj xn a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic ;ec1 fxaqj01 +jjlu0wforce 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 centroid of an equilak u kc/ftks5ds2lx k5f::5v,dteral 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 th/f2ck,sk5d t:v:ux55 skld k fat acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following 51 wcbaagc ,d,,ayqp. is not a vector?

  At twice the distance from a point charge, the strength of the electric egw rezazc3lp+sb cu97z )a6v 8 -//mifield

  Is it possible to have a zero electric field ai4pnw.)r j7t value between a negative and positive charge along t.ta nrjpi7 4)whe line joining the two charges?

  Is it possible to have a zero electric field value between tw6v(3 9taop4eieysu b:o positive charges along the line joining the two charuiby49 s atee:p6(3vo ges?

  Electric field lines fb;(zd fzl awcdr qez:v+793.ptqs 59) dqx +onear psitive point charges

  The electric field show7cxo4tp6ntc w kk6w3+mhdp4dx somp x5 517p5n

  Can electric field lines intersectzp5278mf ekfzbp*;yl in free space?

  A solid block of metal zmw h j+2t)b bfve;,*nin electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field f+ *wh2 b ,nz)tmj;bevin the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamya7lktkde/s0 s1 mi,)eters are each given the same charge, the electric field (E) midway between the center and the e mkk1d)0,t iasyls/7 surface is

  A cubic block of aluminum rests on a wooden table in a r v+qz.u)jp4eak ou/z3k j3b0ognyw)-egion where a uniform electric field is directed straight upward. What can be said concew nvozzj3pue y jb4o3)k.u)-+ gqak0/ rning the charge on the block's top surface?

  If a conductor is in electrostatic eq .)inl; ir/uzauilibrium near an electric charge

  A positive point charge gtayj/hs 3r/ 7 )fys0/-dcgvw is enclosed in a hollow metallic sphere that is grounded. As compared to the case without thes/r/ yvgh/ 0a)c3 tfs-d jgy7w hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in vi+xl zj3l0s(z g3 y0wstatic equilibrium.

State Gauss's law.

  The charge carried by on 9gmbes ntr522e 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 +qv 2w dp68gc+jjy2-wa 2.00 mC. How many more protons than electrons does this piece of plastic ha +dgcwq-y2a pjw826jv ve?

  What is the charge on 1 kg of prot7hni+ yfh .bi2u2 vu4jw9fra5ons?

  An atomic nucleus hasdlxgvw3wnh z6r191gcuzpg-5c p f a q:c,/ p/- 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 values of 2.0 and -4.8 yrc( nlii70z0 mC, respectively. What is the magnitude of the electric force betwe7icl0 nr8i (yzen them?

  A 1.0-C charge is 15 m from a second charg ehy80hfxhh9u e z49icl/ o(7je, and the force between them is 1.0 N. What is the magnitude of the second ixc84hjzhe/0h el o9 7fy9(hu charge?

  Two 1.0-C charges have a force between them of 1.0 N. How bqf+ k2q7u1 v,yna0 noq2z ,yv:emqh:far apart are they?

  The force between a ((/zfsgrzfb 4$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a:;jwt3jxqxhr 23u z6 br mp:w,part, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is t:3mp6zhj: x rj,q;wtx2rw3 ubhe electric force between them?

  Three identical point chaywc yo:h+fusu+6/ uc2rges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at xuuswfcy/62 : c +o+yhu = 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 aree s9-,e dtgvtvqg r1;i)ls )v+ placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.trtqgg;v1lsd, 9)) sv vie+-e 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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at the g/jpvwkm+3kg,wx7q *0k7 uk88f o nz zfollowing positions: Q1 = 2.00 mC at x = 1.00 m; q3u*k7zk0xmjgk 7 8+ n,zfgwk8pvow/Q2 = 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 is placed at the center of a square, d*j/yp35s n5x cql+bp and 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 pp/j n+5qc35y sxldb*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); Q24cod i8k1fzc:n68 n* buu7 iyn = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the f81yu ikz 7i*d4occn6:n u8nbnet force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atmrx:)ldmej ,: (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direxe :m:rdml), jction of the net force on the 5.0 nC charge?

  Three identical charges ofw1ihotwa-) f ; 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 electrostatic force which acts on any one of-1;fwaht)io w the charges?

  Consider point charges of +Q and +4Q, which are sep9r t,*o tkddyce-h, +earated by 3.0 m. At what point, on a line between the two charges, would it be possiblh+,ok,9*c e d-reytdte 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 rem1la ph)r01 a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on01 r ah)mp1elr it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whered67k6wenxywa97n l;-es yv *c2)4s n, trfvkq can a third positive charge +q be placed s 7n d9xwy26lev;ts qe ,r 7)nakkfw4s*v-6 cnyo that the force on it is zero?

  A copper penny has a mass of 3.0 g.wfg6mwuyvie(;47 o ; tl4ps b+mq 70r8;qmqew 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 againsc y9e uwimw)vdx9hn :3(j j)h.t the force of gravity by the attraction of a fixed proton some distance above it. How far above the eu d x3ic(n9vj. e)y)hw:wjm9hlectron is the proton?

  Two 0.20-g metal spheres are hung f .ukebem)us.*ur+k 0fp+ ei5lrom a common point by nonconducting threads which are 30.++*0.eu sp rufmel)eikb5u k cm long. Both 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 of the electricuv+uio-2 8j 8umsb5aw*,yri w field at a distance of 1.0 m from the 5 jbuy w,2i -ovr+8 m8uwua*isnucleus?

  What are the magnitude and direction of the electric field at a distance w 7 km/kqa;:o 8zme0q 2w0rmblof 1.50 m from a 50.0-nC cla qmmkwmre :q/z 7; ow00b82kharge?

  A 5.0-C charge is 10 m from a small tes s u3/;x u)2kdrrgqh(nt charge. What is the magnitude of the electric field at the location of the test charge?kqh r2r; x/ugn(sdu )3

  A 5.0-C charge is 10 m from a small test charge. vp. l,e7*rsb q1ul.im What is the direction of the elb ,qpr7 sli1..e*u vmlectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the/hft:/ xr3k4jave*d*w i9 z+w qf*gcn force experienced by a 1.0 nC charge placed at the location ofx+faq4jgv3*9 wd :/h fz/ *cwrne*tki the test charge?

  Two point charges each have a value of 3.0 C and are4fy3 zad1x ru0 separated by a distance of 4.0014u3d xfyar z m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick an4ch/nngm0 zt f8a, 6xeom5+ erd a -4.0 mC charge is placed at the 50 cm mark. What is the electric field n ea+gch54te nr / 6o0,mm8xfzat the 30 cm mark?

  A 5.0-mC charge is plt1f/b*vuw mvs )by n6.aced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At w1/bft)s.my ubnvv *6what 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. Weh4w1rrt*i4d9goy ) xhat is the magnitude of the electr*4go14exry 9wihrtd)ic field at the point midway between them?

  Three 3.0 mC charges are atpt rz)4-p oa:kcrnl 0h:.n/5k mui)sy the three corners of a square of side 0.50 m. The last corner is occupied by -)s0.npcz:o/ank:5)4r ry ut mpikhl a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on fbq x1r))q5 ia xf +;qq9dsd/fa 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 (0, 1). What is the magnitude q9ixdx fq +)1abf/sdfq;q5)rof the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 m3g6o ;meg nul;t;dpwrq *p- o4C when it is placed in a uniform electric field. What is the magnitude of this electric field? t nm;*ugrg o p-qe;64;d3wopl

  A particle with a charge of 4.0 m4(ocvpbg 8s 9cC 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 placed in an electric field of 6000 1s dy/ch4x 0ztp1gx h-3 fu.jmN/C pointing downward. Whatu4/pjy zx11 h dsx0t-h.mgf3 c charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball issokm.ama;+ 2q l5 u(z8tymrww:9 ;cwo placed inside a uniform electric field, and is suspended against the force of gravity. What are the ma l+tmsu2z awo;8(mc;9rw5.a k :ywoqmgnitude and direction of the electric field?

  A metal sphere of radius bo*)+ bt8ba s/ lese;y10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from ths 8eo;lyseb* b b)a+/te sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the (l; 9,caq o+j7a f:uo9wv kqaselectric field9 (sv9f q o;kaql:+a uaowjc,7 6.0 cm from the center of the sphere?