State the law of conservation of electriesyz.:qu epl 2b )1v-rc charge.

  Is it possible for two negative charges to attract each other?f2qe 7 1 pha0zy3yi)gw

  Is it possible for a positive and a negative charge to attract each oth, x m:7r5yfryu,z8.qgc 0mr:mvfi)m zer?

  A glass rod is rubbed with a piece of silk. During thexj4m 9jtok- 8z process the glass rod acquires a positive ch48tz9m k j-joxarge and the silk

  A proton carries a

  The model of the atom showsryc rriie ny904.xf6 ( a

  A neutral atom alwayi8e gsy13ku d5vw8 jy.ur/2 zks has

  An atom has more electrons than protons. The atom i6kduxel2t+:d 9lnh o/2 : )c.i uvxdfys

  Materials in which the electr y j 6dh(iw09urhz-)owons are bound very tightly to the nuclei are referred to asjd -6wrizh)9wh(yuo 0

  Materials in which the electrons are bound very loosaj5 r)htc(lx0 ely to the nuclei and can move about fr)05(x lajthcreely within the material are referred to as

  A negatively charged rod is brought near one end of an unchargedy 1yu g8yukf+wfh)nf-)l(a i5 metal bar. The end of the metal balf(ifkhn1y8uay 5-)f)w g uy+r farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutfyx1jo)o(+accx :d(i u6-lztral. They are placed near each other (d- zic:u l+ty6) o xaoj1xf(con 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 electroscope positiv6/7k.dbrmq-rtu0 7g sbf -c jjely?

  An originally neutral electroscope is briefly touched with a positively chargeuampf3,j huqn 2mb6wz5e5 76 ,lp )gvid wi36u7ve2p zmp5qu f,6 a)l h,jmgnb5glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posib+c/ egfvb u(yo*p7j*v 261 ex,to pdmtively charged glass rod is held near it. After the glass rod is reme1ujcb6eb2d p+7o/mypg,* x(tvo * fv oved, the electroscope

  A positive object touches a neutraltw0dh/ (to .2bkcj -w7wb2 vjj electroscope, and the leaves separate. Then a negative object is brought near the el kwj t(tjb /hdo 2jbw2v7cw.0-ectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placrwgmn zlm;r.6;s j/2ied 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, and stops. The first ball rolls forward, but does not touch the negative object. At i6rw ;m j.;gr2 /nlsmzno 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 con3+fcqx p +f(ojstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dista-7t4hm) zv, yokp cj3knce d. The first charge is larger in magnitude than the szcpy-o4t k3m7 h)vj, kecond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neaud) 80mnaodw. r each other on an insulaad8n mo)u0 wd.ted table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each or8.zaihjnm g1w 92t w9fvn41q ther with a certain force. If the charges on both objects are doubled with no change in separation, the force m11 vw.af9gh428nit9zw qr jnbetween them

  Two charges are separated by a distance d and exert mutual attractive fomwgz. l kg 8t *cum08+)qsoy5arces of F on each other. If the charges are separated by a distance w yq.m*8c8agk05ts+ )lm guo zof d/3, what are the new mutual forces?

  Two charged objects attract kd/;f1 qa ipoqeb-pxh)w gyd:w3; 6e*each other with a force F. What happens to the forc6k)-dahqbf e po3yei1 *;:x w q;/pwdge 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 to

  An electron and a proton are separated by a distance of 1.0 m. W: 4+2tjob 7r*gfvj8st rbt;bhhat happens to the magnitude of the force on the proton if a second electrb rv2*r;:oshfbtbt7jt4 g8 j+ on is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to4s*opp 1yt rk,fm-uw fm 2af0j: 2nai2 the magnitude of the ,01 s-m2jr *ppf t iuo2a:m24ynffka wforce 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 ous7;tj88)qtco 4ju5 (4imm psgkpa51.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t7a(84 tt )mu5 j4joskpc5igsou ; qpm8he proton?

  A point charge of +Q is placed at the center of a square. l;nr(p2 3w*r al4gza kWhen a second point charge of -Q ikaa(2pgn4 r3rwl lz*;s 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 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 ;t -hm / mg/cllv4y2mvequilateral triangle. When a second charm mvg ct/yl ;m24h/-lvge 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 the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not ac .k rn xhevf*,93h ig izy5b2y+g9b5f vector?

  At twice the distance from a poins 7+q3-cfzy8 dgrww5ys1ku e7gwa w,+ t charge, the strength of the electric field

  Is it possible to have a zero electric fieldj aw tqc f5jq88vg(;2r value between a negative and positive charge along tht;w85 (vj8gc2q aqjfr e line joining the two charges?

  Is it possible to have a zero electric field valuebl( 4 bn2h8y(r: pewsio(w1 dy between two positive charges alo8roe sdw 2lpbyyw4(1hi (b (n:ng the line joining the two charges?

  Electric field lines near psitive point chargb z ;wx dmwvw7+g:pb )2gk/n/psmy/i0es

  The electric field shst de*kt45u8+nim)x qown

  Can electric field lines intersect in free spjzi iy 9j18at4ace?

  A solid block of metal in electrostatic equilibrium is placed in a uni;bevx7 4koa fa1u3h8n form electric field. Give a statement concerning the electric field in the bloc n8o;ufabh3vax41 k7ek's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eagv/3c(sw zb85 d0ukw bch given the b8 z(s0vk/dcubwwg53 same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where aonv6 dczvkqs:) t7 :a( uniform electric field is directed straight upward. :onz qvcs)a7t:6d(k v What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrz,d*2lz*h mv3 lhweebua fibt 3*/2 t:ic charge

  A positive point charge is encax03(t 0ql5jz l d9fhylosed in a hollow metallic sphere that is grounded. As compared to the0xyq3a59jfz llh t0d ( case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in st4n/mdx/c stq(ho y2t7atic equilibrium.

State Gauss's law.

  The charge carried by on 9d pdhg4:upg0e 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 more584o w ldgzo8u;dkah) protons than electrons does this piece of plastic ha;odl 8w)go5a8 d uzhk4ve?

  What is the charge on u07*qtzotag/ bu/. 6pfiey( 29la uvx 1 kg of protons?

  An atomic nucleus has a chaw+r-7k.zb2m p f7lghkrge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1bh7 tw0sra/tmm- d 056deh:nq .5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thnw0q /dte7shbdmr t a-5:hm60e electric force between them?

  A 1.0-C charge is 15 m mru+a0t(a.e-jo ,3 pf9fjj-zcg ucs*from a second charge, and the force between them is 1.0 N. What is the magnitude of thj .e ac-,s* pjc-mg3+aurf(9u 0o fzjte second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aphel u1*jymu5 ,art are they?

  The force between a wp an-62p. )gq0;luz.m gbfl2tkhg fe y wb,1:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experierrk 00gs4b 9rxnce a 1.0-N force. If they are moved to a new separation of 8.0 cm rbx0904r rgsk, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The ftaa5f07: b1r0doq ffm irst 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 cd5q7f:rofamf0 ba0t1harge at the origin?

  Three point charges are placed on the x-axis. A chvmuy(34 5phrtjd( :mg arge of +2.0 mC is placed at the origin, -2.0 m C to thetvhpjg3u:( mdy( m54 r 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 following positionspqtbt*e7 i52xnp(d c3i(41ea ixfax(: 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. What is the magnitude of the force onx5 7eqfii* (3c2pb4(p a1ae(inxtdxt the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a s,czf 4hewmub*) vu;)tecond 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 that acts on the center charge if a third charge of -Q is placed at the lowevf*z;cm)t),ehu w4ub r-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC a 3l,j / kd:l5cavyc7mi0i6l i,xnh +yis at (0, 0). What is the magnl hjik5 +il:m/yy6,d cca ,0l37a nvxiitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = g czl+tiwj*3,,s 9dd)qr(vjp -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is atjs d(p,*t)jwg,+3 dcqv9li rz (0, 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert;wxoi 3q72-j k qin1khices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whoi7 nkjwk-;23 qx1h qiich acts on any one of the charges?

  Consider point charges of +Q and +4lld0a:6 0-n wh)z ky6wwjvty0Q, which are separated by 3.0 m. At what point, on a line between the tw6wtl- aw 0kj0 yh)vdn:0y 6wlzo 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 aapz4ifavo ,9 - +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be po9a av zi,-f4placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. qshb/pd+f/ifu-j a7v3mw. p1Where can a third positive-p f1 /d+fpshjb i3ma/7wqvu. charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A o 8.9k l-xz4d:b m2y7dywcosmtotal 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 g 2k6z/jue( xggravity by the attraction of a fixed proton some dista6j gzxk/ge(2u nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are h13ajii n3 nbx/ung from a common point by nonconducting threads which are 30/13n j i3naixb 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 magnitudigslame8l 30 fkv9/c7e of the electric field at a distance of 1.0 m f8397e gsakil /0vlcfm rom the nucleus?

  What are the magnitude and direction of the electric fiez.;w j;zts1rj dqo,2kl ,f8owld at a distance of 1.50wq rzkoj1s.;,fj2 8o d;,lzwt m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wlr*oqj0m6 ad cc./ +vthat is the magnitude of the e rmvl6ja/o 0+*tccd q.lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What m5*x19 s )g p+o xosy.hhkt9unis the direction of the elesu9m.n9sxk+ph5*o gxh o1 y)tctric field?

  A 5.0-C charge is 10 m from a small test chajd6(5apohizu m7 gg*:rge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatg *di5h6:opa(zm jug 7ion of the test charge?

  Two point charges each have a value of 3.0 eo2m+yb m-2al 0(qwpo C and are separated by a distance of 4.0 m. What is the emq-wa0o (oy+pl2m2b electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm 5a6-,7 dr 8qodfo me0 j;xvikvmark 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 cm6a dove 7,kvd0-mj o 5fqrix;8 mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC char gy/9uo50vqmtxkz q97oe wg0/ge is placed at the 50 cm mark. At what point on a li 9omg097tw/yxu z5o 0kq/vq egne joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plazid-k46c(z f 7 a2b.c dx2rgxvced at x = 0 and x = 0.20 m. What is the magnitude of the electricb d r-iaz7(.vgdc xf 4c22k6zx field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of qv.m9hh .g.d4 *iy ,7wd ebkktside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the dk.q9k twhev,b4g.y*i .dh 7msquare.

  Consider a square which is 1.0 m on a side. Chargeaky)x 6to0mj-di )+xuzcw p; 9s are placed at the corners of the square as follows:pycdx6t9+kzjio)u;m - w0xa) +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 charge of 5.0 mC when it is placed ih(i+ pfk m bei647h3bdhc y.:6vy07bedjr gg -n a uniform electric field. What ismh bgy k.y6 gehjd-+i7i6b 3ph4r e7d:(0 bvcf the magnitude of this electric field?

  A particle with a charge of 4.0 mC 8 3.cyj*yf 3yeyu/ ofqhas 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 iz3 (pfo6vbbhb7e:2 wbs placed in an electric field of 6000 N/C pointing downward. What charg 3 (obh6f7bw:pbz2 bvee must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge o) zas 7dh,wf7jf -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. h7jw7 sf) ,dazWhat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. d.ttuc+sy: ,c What is the magnitude of the electri.t ,s+utyc :cdc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge +0ee-j)6zoghd ug x,e of 3.0 mC. What is the electric field 6.0 cm from the centedh6 jug xg o,0e)ze-+er of the sphere?