State the law of conservation xnz 66+ qa.qvhof electric charge.

  Is it possible for two negative charges to att u,x1cau(7gvhjmg -f5ract each other?

  Is it possible for a positive and : f;dpcjms q g1.nk/k2a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod,yt8m vue.v1 y,jw6wvsdtb,3 acquires m3e1 byv8 sw,d.ujvv6t, y ,wta positive charge and the silk

  A proton carries a

  The model of the atom shows6 -b*wmm 2:ui:gi2oye; ja bnkwtv .(s a

  A neutral atom always has0wq mv2; hp,gq

  An atom has more electrons than protons. The atom ia+ bh9oy- 2c3)bupqwn s

  Materials in which the electrons are bound very tightly to th iyp.o-fj ns60 i/nyh0e nuclei are referred 00hpoj6iy /yi-.n fns to as

  Materials in which the electrons are bound very loosely to the nuclei and6xt((s 2q3 hzt caw9ud can move abouu (hwtqtdc63 ax s(z29t freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bfj(tl b .0/w9)y a7:ofkyh9 2plgtcc3hvout. ar. The end of the2lfc9vac0k b9 to .p uhto:.gwyt(j / h)fl7y3 metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, agdt bq g9h41.b *)tfplnd sphere B is neutral. They are placed near each other on an insulated table. Sphere ph) qg*4b1dtgt.l fb9 B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged ro0s2fb:fx9jt6d l7pow d charge an electroscope positively?

  An originally neutral electroscope is briefly fo(*shbnya ,l:6hs l3touched with a positively charged glass rod. l ,hf3 6:loa*n(ybshs The electroscope

  An originally neutrad jqtxta/hqxp+/(+t3l i0y68 aue1 s tl electroscope is grounded briefly while a positively chargedd+xhit1 0a8qya+ ettu/s q6x/( t3plj glass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sep*olt81c/k7qfbw l yl kc/7. ,ig si(iaarate. Then a negative object is brought nearl c /y8q f7ak otlgl(* .ibi/sc1kw7,i the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuel:0-e-g0s 5wmlng/ f) lolt utral metallic ball rolls straight)og/ u-:tfllge-lm0ew0 n 5l s 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 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 yif3*vz/)kfre jf 98tyz6t k.Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatedixmqz jfqls,1 * t:h/q13 (hoj by a distance d. The first charge is larger in magnitude than the seco 3fshx*1zi1qo( , qjj:mhq/tlnd charge.

  Sphere A carries a net charge and sphere B is ,bsbj)6,gowl neutral. They are placed near each other on an insulated table. Which statement best describes b)bj,sgl, 6ow the electrostatic force between them?

  Two charged objects attract each hug*cn 67+zyp other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwey gn c67*z+hpuen them

  Two charges are separated by a distance d and e/yfk3tk-+ rvi qrl7 ; dff)7lexert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual force)f /ffd3 i v+;k7ylqkrel7- rts?

  Two charged objects aebwvh6 k*)(m nttract each other with a force F. 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 red)k nw(ebmvh* 6uced to one-fourth its original value? The force is now equal to

  An electron and a proton areewki a q9uun d/.:e(6k vja45i separated by a distance of 1.0 m. What happens to the magnitude of the force on e4 jiqd6e.u59kuw/a i(k n:vathe proton if a second electron is placed next to the first electron?

  An electron and a proton are szvn*g 7 o;r1tseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first ern ;1s* tzogv7lectron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. ax47eevev*e cs1e-ry; .+rms What happens to the size of the force on the proton if the electron is moved 0.5r ;ee1cs+*a eve7svr. mye -4x0 m closer to the proton?

  A point charge of +Q li osi/k2g,/o /e ,fonis placed at the center of a square. When a second point charge of -Q is placed at one of the square's o/esogn /2 ,kfi,lo/icorners, 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 equilaterubtg/,4y s+ iral triangle. When a second charge of +Q is placed atsyi/ +g bu4t,r 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 followi psc37.gjw+wnsw gg: 1ng is not a vector?

  At twice the distance from a point charge, the strength );v 8wxzf 3slk p5it:)ljwkw+of the electric field

  Is it possible to have a zero electric f;;z*fdq 1pypx yktc 6/ield value between a negative and positive c;; kty1x pz6/fc dp*qyharge along the line joining the two charges?

  Is it possible to have z;a wh6i304he hupoh .b1bt+va zero electric field value between two positive charges along the line joining the t0u1v o.azthw;bh3pih h b 46+ewo charges?

  Electric field lines near psitive poiws5l n,j4 osw3nt charges

  The electric field showw;uat+.pbe* s b8c ,rqn

  Can electric field lines intersect inesv1 xe2.m.pv free space?

  A solid block of metal in electro,m x89l5 llpi.x(k :kizaq2zwstatic equilibrium is placed in a uniform electric field. Give a statement concerning the electri8l9k.q iklzxp z5wax l ,:i2m(c field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ertys o3w:c b16 sstg/8ach given the same charge, the elecyc:r 6st3 twg/8sbs1otric field (E) midway between the center and the surface is

  A cubic block of aluminum resthl,xq ne q 9u5u0nc8f:qg m52vs on a wooden table in a region where a uniform electric field is directed straight upward.c,m8ne :9 uxg0quf 255q nlhvq What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium n 9p;uwnvsm9 j y76-kgp3:ixaxear an electric charge

  A positive point charge is enclosed in a hollow metallic sx)7*tbd g95lm;wg ud rb))d ntphere that is grounded. As compared to the case without the hollow sphere, the electric field at a poin l)9) 5gbrw*mddgu dtb;x)n 7tt directly above the hollow sphere has

State three properties of conductors in static eqf6tmx3xb:5u i1n.gb f uilibrium.

State Gauss's law.

  The charge carried byd)r 8oopt qy82 one 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 more pr;tkr2ygp*u 6w otons than electrons does this piece of pla;ru6 kg2t*yp wstic have?

  What is the charge on 1 kg of protons?tii(*vfr *q ri6x: 5nyb+jk6m z6e2 wp

  An atomic nucleus has a cha)/o 7l5 k1pxdk j/fggnrge 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.ywopw8coc2pqc v9 +4.0 and -4.0 mC, respectively. What is the magnitude of the electric force y2cq4.opv occp w+ 9w8between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwer;j;ty(dd1b.tw0 v0 y9vz mnw en them is 1.0 N. What is t;dn m 0yyvb.wrd j(0t 1v9;zwthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.3uhw f5 3iez:6j ej5z6d-flh0duj 3dr How far apart are they?

  The force between a 2lq-(fs rkaa5$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inlv:px+9n , nxos3 bm*bitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force*x on+9,sxn3:lmb bpv between them?

  Three identical point charges of 2.0 mC are placwtz4lzjz /gk qv19x 5(ed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mark. Wt1kz gvwj5z/4xz (9 lqhat 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. kwl gkb7;m 4xex kbcio /f5rj5h; z9*)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 1ibcx/b5hor);*jxlm;w4 k gf k 9ze5k7 00 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 positions: Q1 = 2.00 mCy86(f45ih+n qjtw2tn rwc 9 cn 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 on the 3.00-mC charyhnc2 i(+ 4wfw56 rqt tnc8jn9ge?

  A point charge of +Q is puyp) g(2w,c)srx8 meslaced 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 that acts on the cxm2p(8)w,uc rge s)sy enter charge if a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m9 0jtctys.bjh .1q9 xhba ,h(i, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitut.b9hs9xcht(bhqj,y 10j ia .de of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.3 sghpf ,9-) 4cwa9btci0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 fbgia 9wt,chs9)c -4pnC charge?

  Three identical charges of 3.0 mC are placed at the vertic;tx i0;kc hux3i fq0,aes of an equilateral triangle whxc;f0xatiqkui;, h0 3ich measures 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,1v:b cbn-gy .lig/bl0 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 on it wouldl:cv-g/b0l yg .ibbn1 be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x ic:tc,s3* wcw = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it iw ,:3cic*ws tcs zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cap;u-l8 u3.8i7 ifmm vkvz5 ckin a third positive charge ;7iv5mlf-c 3km .u8iuikz pv 8+q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g 9/mp t gt+4x6i//vtwbq32 n 5jxwoloj. 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 plqo03- cb6uve7o y*i the force of gravity by the attraction of a fixed proton some y6vo*-u 7blpo03qeicdistance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres arebvv) l/mv6( n,(oy fgfn b6lw* hung from a common point by nonconducting threads which are 30 cm long. Both are given identicb6fv (myw l o*f l6vg(,nbvn/)al 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 ofbdi et-4oft4 4w kx.zpds z9wg4:*rj9 the electric field at a distance of 1.0 m from the nuctbpdjzi4f k94zg * 9: wo.4sdrxt4we-leus?

  What are the magnitude and direction of the electric field at a distance of 1. 2o66 rsqyg9qas cf,f/50 m from f26a, yf s/9sgqrco6 qa 50.0-nC charge?

  A 5.0-C charge is 10 m fromsvm1e1sz .v rt bnhk+x2w -jnq5e473h a small test charge. What is the magnitude of the electric field at the location of the test chax4h.1qjeke m71n5+z 3vt s-vb2swn hrrge?

  A 5.0-C charge is 10 m from jcdjmv+63l 9kn)a) g ba small test charge. What is the direction of the electric fiec)g j)mj69nadvbk3l +ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitt;ra 3fchaz(i+ 6wb4dude of the force experienc4; +aa6wdic( hf bztr3ed by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a val4 od ,ds:h16 8pjjngdnue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point mis :d,h n4pd8d1 jgj6ondway between the two charges?

  A 5.0-mC charge is placed at the hv :u8(5n bmfz8tf4tz0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cu:5t m8zfzf bv( 8thn4m 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 -4.0 mC b ffoo+mq2, 2xnf,f4e charge is placed at thxf+ 2b,of,of 4e2nfm qe 50 cm mark. At what 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-wgqy s 9hqol vfj tt5ve3;s8ab:6.6p. What is the may6abqv6 g3;t8wqp.vsehs fj- t9 l5:ognitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sikuafr: ayyj6 ) mab:d++*9/gfh hq;osde 0.50 m. The last corner is occupied by +9a6juhaqs+ ydfa) :fob* r:hm gy/;ka -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Chargesqxf9x.+0b4 uakh /fbe are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 m /axbx+ek4hbf9.qu0f C 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 in a uniform elezxy5 hx4 pq:.vctr4 5:xqpvy.hzxic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC -7jw1anifbjkl)vn ace*+5y 0has 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 -pk,17c59bmaar jy ll electric field of 6000 N/C pointing downward cm1b7r5 ayp9jakl,-l. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2xjw qqgw ;d(y*s6 gx7;.00 nC. The ball is placed inside;qgx*s6 qygj7wx d (w; a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries1 4j+o-wzrbwm zz+en cbo* io( sz*+.so1.muk a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's.*oz.- nukjc+1zzmw sw(iz4omo1b*+r beo +s surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electiq8pgh 2h e2f6 sbmtjkr9++0 kric field 6.0 cm from the centgk+shpkb 6mtj0 2+e8q9 h2irf er of the sphere?