State the law of conairk ozuq9 oqop8 )j7b467 0qpservation of electric charge.

  Is it possible for two negatisi p7/; oby: - ** rcrlldinfr/tin6l*ve charges to attract each other?

  Is it possible for ab,i 3gb-vep3n .h*rpqhk* ,c p positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the processh . kwy2 rksjk0oj2-.o+ qv.ul the glass rod acquires a posits .02qk+j-kolry.wk.j vh2 ouive charge and the silk

  A proton carries a

  The model of the atoj ;2 bf jbibkqqu6 t;;hha58h,j;o:ok; an ge-m shows a

  A neutral atom always hasqbz8;r/ee:,e9d g3e o uoeh6r

  An atom has more electrons than protons. vm,0/fsbe cs mwgz:-i k t(k:-ay8v.w The atom is

  Materials in which the electrons arromg tkgpmg 6( 8/ pym 5wx;kk4( f0be0l1wfd4e bound very tightly to the nuclei are referred to4 t80mbkg fw(k 1(;4/mor g 6mkyppw05gxfedl as

  Materials in which the electrons are bound very loosely to the nuclei and c 01 )pdosi,nmpan move about freely within the material are res0 id,n)p1o mpferred to as

  A negatively charged rod is brought near one end of an uncharged metal k/p2 a 2knr8bk.,udtj bar. The end of the metal bar farthest from the charged rod wi2akptdn k.u2b/ kj8,rll be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They aewt y+ 7p(olq8re placed near each other on an insulated table. Sphere B is briefly touched with a wire thtw7y o8(l+pqe at is grounded. Which statement is correct?

  How can a negatively charged rod charxa)u :kkt p...fm8bv pge an electroscope positively?

  An originally neutral electroscope is brieflv z /5)h2 7v:bhptvpyb,7nojlmq ;;hqy touched with a positively charged glass rod. The electroscopebq;op7t;hv7 hm)jq 2z lb :/p5vn,yvh

  An originally neutral electroscope is grounded briefly while a posij6cf (51 rsyrwtively charged glass rod is held near it. Aftejc r1r5f(ys6wr the glass rod is removed, the electroscope

  A positive object touches a ne((p tqi rp*3/g/ahb8c;ohj alutral electroscope, and the leaves separate. Then a negative object is brought near the electrosj*rcq a;/b8pl(3 (tapg hh /oicope, but does not touch it. What happens to the leaves?

  A large negatively charged object is pl t50 k-hl; qu tgdf-c)9;efzseaced 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, a9s;f) kcg; teeq0d t-fu lh5z-nd 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 Coulomb cone( 8ysvz82sw vu0bv-5xxk.n istant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largn6hrz o3 0hy(b0o d-pm ps5q6ter in mag6nyq sroz0-op3h0 5bmd6( thpnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nea5b. ui5-zi uryr each other on ui -y5.i5uzrb an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onptb1:;v l 1qf6xu2ksd b:p1dbl2fv6us 1q;tk x oth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and bztm1m.mr+:dpozc /3( xco5xexert mutual attractive forces of F on each other. If the charges cm5rmzoc. pm:xx3zob 1d+/( tare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. rh,ss cwo**jnyd 42w) 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 original value? The force is now equal t2n jhs,ro) dw *csw*4yo

  An electron and a proton are separated by a distan rm2nkktij*,o b52a1 qce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed nexir1j*toq 5an,2kmk 2 bt to the first electron?

  An electron and a proton are separatontd7/z /dta )llt-e9ed by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to the dd-l 9l)/o/a7ttezn t proton?

  An electron and a proton are separateycus8a*83 no vd by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0. y8sv3ua8 con*50 m closer to the proton?

  A point charge of +Q is placed at hk*5cs5 bjb l5the 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 lj* 555bbkchsthe 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 equilateral triangle. 36xa vr6 k1 wri;r9mfcy74femWhen 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 forcekme;f6r1y c iv9f4 7wrmr36a x 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 vlmu in mx3.j:bo +b2)58 fbufaector?

  At twice the distance from a point charge, the strengthy4u:vt3+nwe6n4h( audkn6g o n7-vrr of the electric field

  Is it possible to have a zero electric field value betwee/coh7ftmisjl6 2/wma:ri z 5 +n a negative and positive charge a/iz7i:t5m/r2cm 6laojshw f+long the line joining the two charges?

  Is it possible to have a zero electric is3:w/9 g0 ly ha-qd.fwhr lh6field value between two positive charges along the line h 0 yaqg-hd6:9whll./ s3rfwijoining the two charges?

  Electric field lines near psitive point charg7jq)j*x 2kdzo1 cf( 9qyg6qq g,f6vqd es

  The electric field shpovvkb.mizhw4** 5 5x own

  Can electric field li8x gw unf;.k0nnes intersect in free space?

  A solid block of metal in ele5d,zc9: ifg(vaa 0d rvctrostatic equilibrium is placed in a uniform electric field. Gizf c9a :r v0i5ad,g(dvve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter e)s3amd+h s/ 28 n+zfsz(slmrs are each given the same charge, theha++2szfd sz 3sm8 l mse(rn)/ electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region4rlzlc x)78 kag hdz 0 +l4y.jyyoo58i where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface7h+)roig ll4 k .8cyy4y50d 8xzozlja?

  If a conductor is in electrosqfxgf-y7k ;i;i5l zs8lb1bj tiz 59p7tatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metaht- /rd 29+, q7gq;(w vjggr9an+humnw flb b*llic sphere that is grounded. As comp-nbg9mw;* h/+ ,qj(2l+f9wqvr7gtgd hn ubar ared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statlz a2 vtnpnx +q ( w:6ml5r*l*zzwau56ic equilibrium.

State Gauss's law.

  The charge carried by one electxjpu ,v.zrw7w yg:14u weedn5q 8xt50ron 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 nerrd741m;p gjnt charge of +2.00 mC. How many more protons than electrons md jrr4;g7np1does this piece of plastic have?

  What is the charge on 1 kg fr*w b2a 1((uwe ,ftx7e2 sdvlof protons?

  An atomic nucleus has a chargz9a2) 0nrwj*.irj. k4lqko0pe h uuc9e 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 x.8x0lx ipt; yqjvd 222.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet0x8 q2jpd .xxi2;vtylween them?

  A 1.0-C charge is 15 m from a second charge, and the force gz s 29s.nkf*b1g qxkcm g7m09between them is 1.0 N. What is the magnitude of the second chabg msk 9g .cf *mn97s2qgkxz01rge?

  Two 1.0-C charges have a force kbj s02 fl*d2kbetween them of 1.0 N. How far apart are they?

  The force between a +cb uj31kg+j86c:bbmzmcb: d $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm axd :lxd:zjjff-8kpx /ms (-b0 part, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is thxz d-dp fkb0 sxljxj:/mf8:(-e electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis.gwjh7 o( 7zhr7in.g(t The first charge is at the origin, t 7h.n jgrio7z7(hg(w 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 at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed ath; fytxa2t; pg785arl 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 forc8l tf2haapx;5tr g7;y e which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = :zsgsb/:;wkw;3k hmh0 7wckl1veb- n1.00 m; Q2 = 3.00v k0mwl-cb w:nskhe:k3;7g hswz/; 1 b 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 ifx8g tdaa 5uh3.an22js 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 electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force thag.3 t2afj ax82nuh5dat 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 (0vttqhdaa -q(z) mz vn(isdd9ys *9y m674k/d., 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net for.(/hmin(4z9smt9yqddkt-dqd 6az v)ay 7* vsce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3j0ug+a gmjv6bpjlz7 l 8*(4qd0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direaqz(8g +gv06mulbj l *pjd4j7ction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 msapk+p)jl(g h(7;iat s 5 m /z7lev3vvC are placed at the vertices of an equilateral triangle which me/ aj;zaetli7vl(7s+(sg53v vk )mphpasures 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 +4Q, which are separated knke d)nrz51t: s8 .y/4yp relby 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 ele.sn:n48kd)y5rt / yrle 1 pzkectrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.y1u edfy84 -k,ybyw:3, wcq 4igw 2kag0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pla8fcqd4kiygyw : y4,uwg kywe123 -a,bced so the net force on it is zero?

  Charge +2q is placed at the origin and charge - r0kli;o w0w)hq is placed at x = 2a. Where can a thi0ilw)o ;khwr0rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 ms zlxk+59nojdq( 4 z,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 pb aau)o)tenb,vk527by the attraction of a fixed proton some distance above it. How f ovb57anbu )2) p,aketar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a ih-l,sv0 ,*9z:y2kaooxoq6l 6al rrocommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle betweeoo vrk,hq9zoia6la*x- lo:y,r s2l06 n the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a c2,2bnm) ptcc5.ktqo t harge of +40e. What is the magnitude of the electric field at a distancekt )pb5t coqn22.m,tc of 1.0 m from the nucleus?

  What are the magnitude and directb mra6c- sm5i)ion of the electric field at a distance of 1.50 m from a 50.0-ncm56 ibr -sam)C charge?

  A 5.0-C charge is 10 m from a small test charge. Whastv 4sohdi)) 1t is the magnitude of the electric field41) dsh stivo) at the location of the test charge?

  A 5.0-C charge is 10 m fromd blzddx051c2 z 4z*oja05hgtp3ef 8m a small test charge. What is the direction of the elect51zjde*f3p5x8 a2td bd z4zho 0l0cgmric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thebz4r +yek -2xb-ry4rh force experienced by a 1.0 nC charge placed at the location r4 r4 zk ry2-bbye+-xhof the test charge?

  Two point charges each have a value of 3.0 lm oy;m1xdh7/ lv96kc C and are separated by a distance of 4.0 m. What is the electric fiel;1h9 6lydxo/clm mk7v d at a point midway between the two charges?

  A 5.0-mC charge is pla rm7w-e)raf6+ g/w6pbjwybg,ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What i7rw6wab- p jg6),+yrmfg bwe/s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meg3p/ 6 leze38iqm t7nhter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the8/h ep tq3gmzie3nl76 electric field zero?

  Two point charges of +3.0 mC acuy: -bqwo rbvhd *l:u 1kyq+fe .2/8jnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mid:qjk-uqb: h yw2+yc8 /d eb.f*l1rovuway between them?

  Three 3.0 mC charges are at vbgpjz3 t3o0jhb.w -;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 at the center ; bj0hp.-tvjgwo 3b3zof the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c:x7)+ew)9 ujgnf ajioorners of the square as follows: +4.0ojx9 juf+w in:7) ega) 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 5.0 mC wh vp;ot3o;tzia /:n,x; 9geh07e qd tmpen it is placed in a uniform electric field,z;t;qo3 7t p;exe/i: tv a0omnhp9d g. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has-1cbcj t 8ac3h 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 N/C poikxi mc+o9k 655hlnjw:nting downward. What charge must be placed on th:iwnm9x k5j56 l+ockhe ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball ism*f4v,r mz( bb placed inside a uniform electric field, and is suspended against the force of gravity. What are the mab4f*m rzmv, b(gnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the )zvf:sh f+7xr6x p u8rmagnitude of the electric frf6x)zh8rf x vups7+: ield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 n0d- 3mgl tg(dcm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of(0dl gnm3g-td the sphere?