State the law of conservation of electric charge.q (1yxfjra;k.,: hpy a

  Is it possible for two negative cha(elo-1mpq) nkrges to attract each other?

  Is it possible for a positive and a ncjl 0w*7egy, y h:o:w 1b faz9xpg7*bpegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glashh 0wdrhblce1c (+w)* s rod acquir*lc1hhw (+h)0 er wdbces a positive charge and the silk

  A proton carries a

  The model of the atomwxtk *4t*xakxbr;w0w6) sol(f9wgm(k d .u j) shows a

  A neutral atom always 52uz327(mr mhsse iuf 8l9kl-kyg)or has

  An atom has more electrons than protons. The ato-tjl.tk y0n r5m is

  Materials in which the electrons are bound very tight l +u emz)twy+ +cm )9zo2r5h.jg-gvaxly to the nuclei are referred to y+ ae59lxmv tgcju zhw) - +.og+zr2m)as

  Materials in which the electrons are bound very looselj*7ew7yif7 nhy to the nuclei and can move about freely within t*i jf77 yw7enhhe material are referred to as

  A negatively charged rod is brought e6xpr6)6c7xz z*bi.z. p m cienear one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargeime6*erz6 pzz76xc xic).b.pd

  Sphere A carries a net positive chargedp f4(6qicqh (, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whichd pqf(c(i4qh6 statement is correct?

  How can a negatively charged rod charge an electroscope positively?ymv.t*f8re4x hoyh -it(2kcxw .s1 y(

  An originally neutral electrps4. b 4e,hfmboscope is briefly touched with a positively charged glass rod.hebm fp. 4,bs4 The electroscope

  An originally neutral electroscope is grounded briefly wv6imw a+9c)aexe;b 3e y-tmu 5hile a positively charged glass rod is held near it. A 3-xwe9;ye)u+mev ab 65i amctfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separateduw2r eo (ig52. Then a negative object is brought near the electroscope, but dou2o(ig25rd ew es not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulatedb a bfh,ba(m:a16aqp:dw be53 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 1feb5a :6h mb b3pd,bq(:aaw ano time does either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the C08yr7 wx fezy-a7 8xgg)dnxn/ oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. q i5.*lpnh +ai0f o2szThe first charge is larger in magnitude than the i*+hq05s poli .f2anz second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neard81s xxqg*jy 4 each other on an insulated table. Which statement best describes the electrostatic force between them?j*xys d qx1g48

  Two charged objects attract each other with a certain force. If ;h .o0 +h*e6 qijbem/szk iw9lthe charges on both objects are doubled with no change z.*o+6 mise w9 j kl;hi0bq/ehin separation, the force between them

  Two charges are separated by a distance d andmaz 2c6.,kz-e fkkd+h exert mutual attractive forces of F on each other. If the ck6d2 -emkc.af+hkzz,harges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other witzxck,1ss8 p9,hxbcge *+r xq6h a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance betw+b 6*hxgsk8qs xp1xzec, c9,reen their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separ7u xa-lecxk(o /de1d3r+ mdmrcr2rk k b :84o7ated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed ne7u8 o4d7m3cdrkkcr:+-2r e/a dk xmr( eobl1xxt to the first electron?

  An electron and a proton are se 1b ba2 2zi;fv.nbarr0parated 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 nr2 n b if;v1ab.raz0b2ext to the proton?

  An electron and a proton are separated by a distan/y/pe 0ew;zr l7nc0dp gu;*cnce of 1.0 m. What happens to the size of the force on the proton if the electron is mgu 7 0;/pecy/ w0nd; pzcrlen*oved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squarscinevex3g4 83z 6zp-qvy- y adi.-q-e. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic sz 3.v-npzy4x-g-d i-q i83yvqeec 6aforce 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 vpq04k4 vz;oy at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an ele 4zp ;v4kq0ovyctrostatic 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 followin*s1)x/dm, 45w bitwb6g3hvz8j npqmc g is not a vector?

  At twice the distance from a point charge, the strength of the electric fiel(x1q8d f /fnqh(hl i+ud

  Is it possible to have a zer15 mhu ctr4- yuxv5nsh):4sul o electric field value between a negative and positive charge along the line joining hvu u45 yxm-rtl:1scs4)h5n u the two charges?

  Is it possible to have a zero electric field valuemq(dy7n9,g:jg4lj,vj fz- h3cg 0d yg between two positive charges along the line joining the two chanz y:gf3 yd7 4(q,j-0cvmj,lh gdjg9grges?

  Electric field lines near psitive point charv nl7artj3:d9+y) h3wyb 53y- jxnkndges

  The electric field shoi,dp hob13dwra 0l(v0 wn

  Can electric field lines intersect in free spacg p,i*e* hta1ke?

  A solid block of metal in eii d(5v5 .jqfnhs.,hglectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field inf 5.hqj. nisgv,i(hd 5 the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters j5 +jkl(3r cab xc7k.sare each given the same charge, the electric field (E) midway between the center and 7k(jxc 5sk +j.r3 lacbthe surface is

  A cubic block of aluminum rests on a nn xdebs a :1n.n+s**xwooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the char sd.nx1xs**n+a:n n bege on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chkx6 8he/t8tb sarge

  A positive point charge is encbyp1;-c i 6z,fp8hrlw losed in a hollow metallic sphere that is grounded. As compared to the case without the holllpi 16b f8zph;r, cy-wow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductoe:xt 5:z+otxeq7nf d (rs in static equilibrium.

State Gauss's law.

  The charge carried by one electron r7 e+oa* za84*m tg.pkh/ko kcis $e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has0.71ub :k 5+, zgshigssjerpv a net charge of +2.00 mC. How many more protons than elev5 , bi:+7jhpeu0s s.srggz1 kctrons does this piece of plastic have?

  What is the charge on 1 kg f 8kzm:*h3ik kjjri+v 7kqr :*of protons?

  An atomic nucleus has a c.ctf/*sf 0ml0/tjs opharge 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, y(j 0ajoeb8d)respectively. What is the magnitude of the electric force betw(8oabj0 d)j eyeen them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 ://f+z6yl x yerrdiv(N. i :y lz/+6(rf/vr xdey What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hf8 cnp 89 e;e wtwkd6es3w/p,b*o o6iwow far apart are they?

  The force between a yc e5(s1 1a zql/mhm,o$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm gf.:5p(l 6f osk3zyvfapart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric f(v fzpgfk5o36s: l.fy orce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The z 13wxx2tc/qyt f :vc6first 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 magn21wt/t3 6:cvzxcx yf qitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed )mj g;p0krqljnr-dfc** r8l j0 ury *2on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to tun)rlqcjry*j2r8 -*rl0 m 0pdj kf*g;he 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 n1n cs:.igr0;pz orllc q1e// at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00c p 1;c:1qsnr/l.grenil/ zo0 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, and a second pol f,ahj5:l-wlint 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 t w-:,fljall5hhe 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); Q3 =v2 tegm qktynj586/) d 5.0 nC is at (0, 0) t ktj q2en/58m6vyg)d. What is the magnitude 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.ym --uwzq/x(j 10 m); Q3 = 5.0 nC is at (0, 0). What is thez/xwuyj-m -(q direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placede6:4eyx6 .mggrt r 0xd at the vertices of an equilateral triangle which measures xm etex6d6grrg0y : 4.30 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 bn hdvx844ql: *l wvgbzq6:wx*y 3.0 m. At what point, on :wv v4bw*:6*zlqg l4dxnq8xh a line between the two 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 a +9.0-C charge isuo a3a/x5u-)g kt0: 0bswnooj at x = 4.0 m. Where on the /a0b os uxtgo0)5 o3nuj-:wakx-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 prmj 84gpkm-q5yn4:uvh+1*kkk2wdr x = 2a. Where can a third positive charge +q be placed so that the for kq2nd*pvjgw-hmk1k4y :+pr5r8 u 4 mkce on it is zero?

  A copper penny has a mass of 3.0 xifuwe0 ocvtg,/ .wrc4 o8x4 ,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 thee 1fbax6j)o d9jpj j6f6l25hh force of gravity by the attraction of a fixed proton some distance above it. How far above the eleb )2lpdxjf96 6o hh6f1jej5jactron is the proton?

  Two 0.20-g metal spheres are hung from 6kieg7 b 6:**7oyqfull 8)fc2tcwq lo a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglefqce2i* o7co*8 l 6gu wf)lq7l6tk: by between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a ch9q1j74y zirv garge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuclegvy974 qj izr1us?

  What are the magnitude and2pabyr7 5a+zo direction of the electric field at a distance of 1.50 m ba5r 27pzao+y from a 50.0-nC charge?

  A 5.0-C charge is 10 m tirp tz,50ts/ from a small test charge. What is the magnitude of the electric field50tr ,pstti z/ at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wh8 l87 hjmq8k6mm/:rgnt eg 06jbot*sdat is the direction of the e8tg os mjeg*q j/0 68nbm7m:8thld6rklectric field?

  A 5.0-C charge is 10 m from a small testgv: arxjfzg bd;5:e*s:e.c; xuk.9q x charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test chargv e jcxgub9d a;:k.sex*fq5g .x ;::rze?

  Two point charges each have a value of 3.0 C and ag o5r wnpz4/znb7 s(h/re separated by a distance of 4.0 m. What is the elec /(gr57 snw bo4/nphzztric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter si-; e(ayhz qb8hs80ontick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric z ynh0b a8qe8h;s(-io field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4. uvecn nwye32wx q3th9+q4/y4 0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elecu 4ynx wcwqy3/hq +39n4ve t2etric field zero?

  Two point charges of +3.0 mC and -7. j *b()lw 9qktchnfy vmf0-s9:z2 q0jy0 mC are placed at x = 0 and x = 0.20 m. What is t0vq fk f 9why:*m(j-y tb9s0 jqc)n2zlhe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squaru6f,d swsxwnc :(pr98e of side 0.50 m. The last corner is occupied by a -3.0 mC charge8xdps9ruc6: f s,(nw w. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are psgk1 5 aguv3;ikumq3w 9-uc,mlaced 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 muaug,3s-9cgk wk3 5 v;uqim1 of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it i nkqz,6cvidfpz 7 f3((ceqy31s placed in a uniform electric pc3i(q61 zy qffcvn7dzk,(3 efield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has z34 fi.tv2t+vus 8jkk 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 oyia7p(ka*2jnm1h ,zql 0; aawf 6000 N/C pointing downward.p(z my wh1jq;k2,ai 70 aan*la What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a,,thyf f4 b: ./jgntmt charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the ,f: n4bjhm yf,t.gt /telectric field?

  A metal sphere of radius 10 cm carriifx/ +.iq79xds fg (zyes a charge of +2.0 mC. What is the magnitude of thexfgzi+y d 9i.q(7fx/s electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrieu ev/4mor74-ej xf2gks a charge of 3.0 mC. What is the electric field 6/42-om4 kj7vu reefxg.0 cm from the center of the sphere?