State the law of con( +fh )pay 3(y ns 3nhc2vsxzbv97gxh/servation of electric charge.

  Is it possible for two negative charges to attract each other?b9g y6k3j8rlu z)w7vj

  Is it possible for a positive and a negative charge to attract uvwctr:/;2pdno),gu 1x u/u neach other?

  A glass rod is rubbed with a piece v 2c1siw d* pacim:yj+pft*q8a: .ib3-lap2xof silk. During the process the glass rod acq:p.id3aa l -cisvpcy+12*w2m b*if:8txq ajp uires a positive charge and the silk

  A proton carries a

  The model of the atom * h/6fho6h8n ,dklrid shows a

  A neutral atom always hr4 . se2v2v 4ii*lwkxmas

  An atom has more electrons than protons. Thv tp/1 ,a vwumd54qli9p89gbb e atom is

  Materials in which th vfpcz i 0,y1fym1t.6de electrons are bound very tightly to the nuclei are referred to fizy01f pc d, .mv16tyas

  Materials in which the electrons are bound very loosely to the nuclei and ca+pgy zbx.pad /(gc76an move about freely within the material are referred to 7+p.g /y6axapg(z bcdas

  A negatively charged rod is brought near one end of a404dj0l tnbdd n uncharged metal bar. The end of the metal bar farthest frotd4l0ddj bn04m the charged rod will be charged

  Sphere A carries a net positivy7nwys +++myte charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched wi yn+wmy+st7+y th a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch)gm1w)/mnsj; i7wtn +a+ymm narge an electroscope positively?

  An originally neutral electroscope is briefly touched;k:a:u y4 hjtenbm(yy) wwd 3yn.0 v1n with a positively charged glass rod. The eevd)t40y;u bh:mn1a y(n y :nyw3k.wjlectroscope

  An originally neutral electroscope is grouwivl ew.4z.z(27 a. k5kjptrxnded briefly while a positively charged glass rod is held near it. After the g 4i2v7a .k txzep(5krw ..wzljlass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and ths.++j tl r3y4,kxy8 peicmck l.wc -t.e leaves separate. Then a negative object is brought near the electroscope, but does not touch ity.-ckcmj,txl p4eslwy+ti3r c +.k. 8. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut1ap5fhjxi6gqb,32 vo leo0sy ;qh ;x,ral 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 doesf iyhp2 ;,35; qqsg0 v oaxexo6j,bl1h 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 const,p2xjdsiu73q ifu; u 6jx2h++;rlm wxant $k$, which appears in Coulomb's law?

  Two charged objects are separatedg3/ola)ly2bvp 8hzwx jr /*7i by a distance d. The first charge is larger in magnitude than th3*bxjwl) //oiry zvp7g 8a2lhe second charge.

  Sphere A carries a net c 4 ;ruli j7u 61v53,wk/bmk xf3vtmwtnharge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betwewnv;fkui3,lrjmt4w bmxt76 15/ k3vuen them?

  Two charged objects attract each other witbh1u o;pxpy1f1 b1b t9h a certain force. If the charges on both objects are doubled with n;o hb1pf1tbb19xu1 ypo change in separation, the force between them

  Two charges are separatbk2,tpe 3spp3 nicv8:ed by a distance d and exert mutual attractive forces of F on each other. If the char3eip t8 , k3b:nppscv2ges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 06cienan-ph: beyj u,-6*qxa 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-f*a0 h-jpy :6qieuan- cn b6x,eourth its original value? The force is now equal to

  An electron and a proton are separated by a u *ui )6hccp8d2, pxysdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the u6c)ipcxu2 ,ph d *y8sfirst electron?

  An electron and a proton are separao ((j+iyi pq72n0x4zk) hsa zhted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a 0ons( ii hz(z7y24ax )hq+kpjsecond electron is placed next to the proton?

  An electron and a proton are separated by a disz7t+p+ mcr-bvyg+5g dtance 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 the proton?v b rcmt+ypgd+7g-+z5

  A point charge of +Q is plh;ozaxrm oj(xy21 b(ln2u 5 i-aced 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, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrjox ho25 1byrx( 2 -mun;iaz(lostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is plac8y.bq*ek1 js ned at the centroid of 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. Whatqsy* b.8n1jek 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 vef;tkl9- b3n i7ktiu3octor?

  At twice the distance from a pointav(h* r+f:zt)r/ (c *n anjwlwj0sk1 t charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatt0o(p/i q /nyioqx,uev 9e4cw0o(pv e4*ep4 qive and positive charge along the line joining ptuq ,vvq4po09q4 4eoony* pxie/we / (i0(ec the two charges?

  Is it possible to have a zero electric field value between twu)f k 6b xc*:h-6mvxzho positive charges along :-xk fhm)xvz* uh66cbthe line joining the two charges?

  Electric field lines near psitive poin5fmefit1lkec3 )s1 1d 7nh f/wt charges

  The electric field sjmb,(fu s 1paak)uqs.6 3sbb7hown

  Can electric field lines intersect in f/hx l1cez)0 ,lo wqk,az,. oqkree space?

  A solid block of metal e7wifu4-gd53gto2q a in electrostatic equilibrium is placed in a uniform electric fielf e45-g wat2o7 3gquidd. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac 8.crh7xd- :emg3oqr vh given the same charge, the electric field (E) midway between the center and the surfacerdxq83v o: -r. 7mgech is

  A cubic block of aluminum rests on a wooden table in a region where a unifo/j)s, k m-0k)cqjoipu rm electric field is directed straight upward. What can be said concerning tkcjmp)q/jko i, -s u0)he charge on the block's top surface?

  If a conductor is in electrostatic equilibriq61*/soy co *wxtft7 e41nl nlum near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is gr t6d 4ejondb6.s77l 6qg: prldounded. As compared to the case wdrd ol 6btne76j4dlp6g: 7.qsithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statill oa9nd/4mm (c equilibrium.

State Gauss's law.

  The charge carried by one electron 7*/9 ;cleo lv8n5o7rt tdhukw+xx .zd 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 +2w9ttjy+ ;q:h c.00 mC. How many more protons than electron;t: wjcty9h+q s does this piece of plastic have?

  What is the charge on 1 kg of pr.y(v le7; wixwotons?

  An atomic nucleus has a char,8 pqx gr0jo-dge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatezrlvu ,y8irn y/)04xmyj/ kk5d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Wh,r58l v0zm/jnruy4yyk)k xi/at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a 1ynf g k kg+(1g mr.hm zefzw2u:zg14xm92 2lssecond charge, and the force between them is 1.0 N. What is the magnitudekug. rzs2mh( z yz+ m:kf1fle2g41nxw9g1 g 2m of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hoc6 t ih4wmuq du+ )v8 mbc72m)bkh(,bew far apart are they?

  The force between a pd 42m0 et/j7g5orxdh mmew)+ $30 \; mC$ 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 1.4a5c+ig4tq oq sir 6;j0-N force. If they are moved to a new separation of 8.0 cm, what is the erta5o;4q + ji6c4si qglectric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fihxj,ndbr 72iatm 6/e.rst 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 tme7i/jxna2 r,.h d6bthe charge at the origin?

  Three point charges are placed on the x-a3v njx*e8bg g/xis. 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 electrostatic force whig/e j* xvn3b8gch acts on the charge at the origin?

  Three point charges are locatejt ro, b26:n1ucctg bmqy)s 49d 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 = -1.00 m.6qytbm,jru :s)b1ccg o4n 9t2 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 seconja+9enah,,y a d point charge of -Q is placed at the upper-left corner. It is o,,a heyjn+ a9abserved that an electrostatic 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, gvvs6 y:.lg4j0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magngjl.4:6 g yvvsitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0u0m,4x37hzuj)/hj;xp lrwu a nC is at (0, 0). What is the direction of the net fox3z/)juha;mh74wu0x,jrpl u rce on the 5.0 nC charge?

  Three identical char l. jg4msj(fmhcd ;;d2ges of 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 one4ghmcld( mdjjs. ;;2f of the charges?

  Consider point charges of +Q and +)qmgb dk . vp/st575rt4Q, 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 electrostatic force acting v tt.g7mqb55r/s)dkpon it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chr0w 751i mk0m+retbj 0zk 1mhparge is at x = 4.0 m. Where on the x1+j0rtz mpribw k m050ek17hm-axis can a third 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. Where ca8s:o rfc0dpe6o8 7rgt n a third positive charge +q be placed so that p078cero :st6ofrg8dthe force on it is zero?

  A copper penny has a mass of 3.0 g. Accuo ob* r*ci8vw(8 n p-:v)rpk1s0y m 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 q2 qfnts;*om,,f j4zjof gravity by the attraction of a fixed proton some distance above ioqfq ;jzt*j ns,4,m2ft. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducti*k2q)cv jr 7paqk0yy* ng threads which are 30 cm long. Both ak 0q )vky*cpyq 2j7a*rre 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 electr*7 z1+lsx ,h5kaq3l7 v0qcganmufz +dic field at a distancqxn7svz1 zkh7 l5 * cm+gfu3,+adal0qe of 1.0 m from the nucleus?

  What are the magnitude and direczwmms1kp/bgb87 ;w4fg, w bf;tion of the electric field at a distance of 1.50 m from a 50.0-nC ,1;pgk8fmbmf/w wb ; zgws7b4charge?

  A 5.0-C charge is 10 m froq7t,n je(+ 5rom5v2swag 6jmom a small test charge. What is the magnitude of the electric field a2rto+5,7wjmn g6 osqve5(ja mt the location of the test charge?

  A 5.0-C charge is 10 m from a small6ev2 .d :t a-lkyjp*ab test charge. What is the direction of the electrile6b ajv-d:*yk2a.p tc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudek/qb evl *lkb)dc:;,l +su7pl of the force experienced by a 1.0 nC charge placed at the location of the test q*l e dp;/vu 7 klbbcls):l+k,charge?

  Two point charges each have a value of 3.0 C and are sepb67s qu; fur3harated by a distance of 4.0r6qfhs7b3 u u; m. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed atfp98. j.rbap z the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thepajpf89r.bz . 50 cm mark. 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 -4hp5zz*km( nn 7.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elect n5k nhm*zp7(zric field zero?

  Two point charges of +3.0 mC andrbbb/8.e adc : -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the el8.bedrb/:c ab ectric field at the point midway between them?

  Three 3.0 mC charges are at the three corner 2 9hu:r/*c(wvtfqmuo-pri+m s of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. uvfr2 ( mt o/-+r m:9ih*pcqwu Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Char9t1 (xq1lqb/t jyc1 wo2pmo0 bges are placed at the corners of the square as follows: +4o/c (oqx 1b2lybq01 m jt19ptw.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. y1pt(qi l*xi0i*hu o(0 mC when it is placed in a uniform electric fielu* xh1o0(*itpyiqi(l d. What is the magnitude of this electric field?

  A particle with a charge h u-wl qt(15lzmy:oy5 of 4.0 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 placed in an electqhqc, iq+mb yqs05o68-ekv s(ric field of 6000 N/C pointing downward. What charge must be placed on the ball s8 v- qqqk,ec0iyh ( +b5m6soqfor it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placc:z)*pylrm,qs2ifw 4twd p )+ed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitud42))p,mqzrc* pif+:y d sw twle and direction of the electric field?

  A metal sphere of radius 10 cm carriesc(r nf.el* 2nt a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from th*rnlfnc(2 te.e sphere's surface?

  A metal sphere of radiv+1yrv;67k uh(+xemj zi;qot us 2.0 cm carries a charge of 3.0 mC. What is the electrici;7+rk(y h zv16 uetm v;xjoq+ field 6.0 cm from the center of the sphere?