State the law of conservation of electric chargt . bj th8dh5zuot)tb)z k4+s)e.

  Is it possible for two negative charges iyswr4/ t ,7siph1cb;to attract each other?

  Is it possible for a positive and a negative charge to attract e--us6 w sxr/18yhpmxkach other?

  A glass rod is rubbed with a piece of silk. During the p(bj2me k c(2ofrocess the glass rod acquires a positive charge and the ( c2jfoe (mb2ksilk

  A proton carries a

  The model of the atom kv5(b*waf/ cn shows a

  A neutral atom always hv)gnu u+*4 azwas

  An atom has more electrons than x; -8g8:g*h5ldfk1qmkghab h protons. The atom is

  Materials in which the electrons are bound very tightly to6dvs o 6hu 3u-hn. 4iv)gxdeh7 the nuclei are referred gh64ve6 o-hu .ddh37 unv )isxto as

  Materials in which the electrons are bound very loosely to the nucljrrbzc rf3 e7j;)-tv 7ei and can move about freely within the mate7jr-rt7e r);3jf vz cbrial are referred to as

  A negatively charged rod is brought near one end of an unchb127xrq 4jgpgp b+pnz :8w1p,po j c2carged metal bar. The end of the metal bar farthest from the chrg ncp2bo14z,j8xp+cpp7 wb:g21 jq parged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place)h3nwlfk6uo .5 *b t(g emynz1d near each other on an insulated table. Sphere B*f(h k l) 1omy3g6etbwznn.u5 is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosl l4+tii; kx,fcope positively?

  An originally neutral electroscope is briefly touche*7ms5(v jy:e5iofmaeafjq x2pj,.)n d with a positively charged glass rod. The el5eo(,x* jsamn5fy ij:2)q f.avjmpe 7ectroscope

  An originally neutral electroscope is grox -po /.d4x yr nkou:j, /vhvrop6s(q*unded briefly while a positively charged glass rod is held near it. After the glass rod is removed, 6on oh.rrxvvky q/, o4(- pupjd*/x:sthe electroscope

  A positive object touches a 7bey-6sq2wktph g 1r( neutral electroscope, and the leaves separate. Then a negative object is brought near -7bktqpr s261 heyg (wthe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuti8 mgdm/e 8s.bral 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 no time does deismgb .8m8/either ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couuxzyi 8 4u 0mrpx908nilomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargl0s(5r( osxdxgb1txq , wjdv:cuj2 3 .e is larger in magnitude than t1.,w xbj5ddq(3 xu2:sorc0tg sjxv l (he second charge.

  Sphere A carries a net charge and sphere B is neutral. They 35i rj-n67 f4dolh5 02ywubuyzbygs (are placed near each other on an insulated table. Which d-06oy5w3sg bu4ry5yzih u f(72b lnjstatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges :b; ui8 yd2uf 1gfme5wjoy2m )on both objects are doubled with no change 25 ;mjmid)8uog byeywf:uf12in separation, the force between them

  Two charges are separated by a distance d and exert mutual atzs yf:x kp .gvz-7s2 )hmb;or5tractive forces of F on each other. If the charges are separated by a distance of d/3, vyr.zhog- x7)bzm2 s;s 5f:k pwhat are the new mutual forces?

  Two charged objects attract eac0-ye tuhva2x4 h other with a force F. What happens to the force between them if one charge is doubled, the other charge is triple-2uyet 40 hxavd, 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 s8* y odyj x-j5a3mgr8geparated by a distance of 1.0 m. What happens to the magnitude of the for3y*grjj8dm8ay-5o xg ce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distanc5 r3 ;fhr7u7,4nevz wa.zdrsie of 1.0 m. What happens to the magnitude of the force on the firstdan35rhzf4 77eurz .i, vws; r electron if a second electron is placed next to the proton?

  An electron and a proton are seplvk a2v*.3: amvwwgc zt u4l rx;k0.l0arated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is v3:xg.0wll4 wtl zkv *cka2ra;uv0.mmoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second+xeg(rov9fuo z q4n f; 85jh4u 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 positivevfu;f845o hqunx4 o9gr e z(+j 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 eqx*:c0y e4.fcjkhq .v84a hmat5 eca0builateral 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. What is the magnitude of the f0 :e*4bhk q aca8hmx05jf.a c. vey4ctorce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following 17 ubxd4m5 xokis not a vector?

  At twice the distance from a point charge, the strength of the sv. hxloh7ccd( ,( y/delectric field

  Is it possible to have a zero electric field v25:vhbi gs )haalue between a negative and positive charge svh5)2gb:aih along the line joining the two charges?

  Is it possible to have a zero electric field value between ts sbu hbqha/y f/y+y168)h0jy wo positive charges along /s6hju0b/8s)yyyhf +1aqh by the line joining the two charges?

  Electric field lines near ps5* f*b.bjapfp itive point charges

  The electric field showqmab1a6g(( l * uov,2hp9k srbn

  Can electric field li7sxx ) moxvpnx*f+(z1v 2qyp -vb8 ex3nes intersect in free space?

  A solid block of metal in ely+:,4o4 vb ql*ewc1pn vm *biig0x,shectrostatic equilibrium is placed in a uniform electric c1x v,*bnvl,4gi0+ m*phes:i b4oy qwfield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter5v)p m 8r7df41swfinz s are each given the same charge, the electric field (E) mif7 fv4n sw dpimrz58)1dway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifo9r3e4jz84 fwsl xlm5 pr7 ln8crm electric field is directecw384perr 8jl 9x 5s4f 7nlmzld straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in e j i ggo8/pvk58k)1ej4fwh7by5r guy 7lectrostatic equilibrium near an electric charge

  A positive point charo:+kb-y7cj(-k- z+lybx d*lg is 0 ooege is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric zc+0 -(l7k-yby*bojeo: si+ogxlkd- field at a point directly above the hollow sphere has

State three properties ofpo+tbagly +zw q t4*1vhz/9l0 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electwr:4r;t lj3):hrn vzs ayo, d:ron 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 protons t 1f*gxdm:fe) chan ele*:egc f x)fm1dctrons does this piece of plastic have?

  What is the charge on 1 kg :wx n0 )+canreof protons?

  An atomic nucleus has a charge of my1ac sa0+f:ns4bw ;-ydc p)z zbx(k :$+40e$. 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 pi9a jn,s nd-6amf4jl q)n*, p2.0 and -4.0 mC, respectively. What is the magnitudn)j*ap-4 pa, miq n,dlf6 9njse of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is u dtat.*mph 58b n6r ,:ojiypq30lof51.0 Ntuior85od.fp b65 *thj0 q:nya, m3lp. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are sa;e 3zywk * eo/nu+h /suu2b9they?

  The force between a )lunry,l o-o k)1ot0wv kl+ q0$30 \; mC$ 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 1.0-N force. If thefccf8s7cuy 0n7br w0, y are moved to a new separation of 8.0 cm, what is therc,c fsybf8 77c0w n0u electric force between them?

  Three identical point ea7fj(l6 x)nh charges of 2.0 mC are placed 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 cmln6j)f7he(xa 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 mczp5)b v3u7 du) ty7ltewd3d9 C 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. Whl)5 9pbv 7zt d)wu3tuc7dy3edat 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 0,5zhju mq 2iqmC 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 thmi2,5z jqhu0qe force on the 3.00-mC charge?

  A point charge of +Q iu57314 i pfl .zj5y7ioqq ackks 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 zqpc i5 k 5a.j u7q3oy47lk1fiof 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 nCt)51-piwz lcg9od;mdkyo a81 is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thegai91dc o)-dk ;zolm yt8p 1w5 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 n6dp8)tii. oumuj 6(m = 5.0 nC is at (0, 0). What is the directiop(u6u)mij dn86oti. mn of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC+u.g5qo vsk2 t are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the ma.v ok+stqu52g gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by /9dcmix46i1, shh yio 3.0 m. At what point, on a lmo c 9d/si,6ihi41 hxyine 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 is at x = 4n hc+e5mq,st+ .0 m. Where on the x-axis,+hs5 nqe+tcm 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. Wyf2.6q; vscx veyr20q here can a thiy.v2 xefr; 6c0y2qvs qrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total of /adjd6*/ ev si$4.0 \times 10^{12} \; electrons$ 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 grat;p m,zch nujxk89 g3w em7-phql 1p25vity by the attraction of a fixed proton some distance a-7, wgxpu2qh1emcptmzl5 p89n jh;k 3 bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadz3w:xy ;pg;te s which are 30 cm lonw;t ep 3gzxy:;g. 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 mar*o)rxa(wgth s-ni j: m 8e29ggnitude of the electric field at a distance o ji(w : atog2-er*x8rhn9smg)f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance y/y,jhhb:k ,z(z,lpqoe be9 (of 1.50 ye, o j,eh,lyh9k zq((p bb/z:m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wh:rr- .kuaqfhr ,jh7f ,at is the magnitude of the electric field at the locati,.:jrr uf-,karq h7 fhon of the test charge?

  A 5.0-C charge is 10 m from a small test char gfov8 qehho y)f5i i1+2ska3 jo-,bz2ge. What is the direction of the electric fi b+-yoioh, qzs)52f 3av fik 28eohjg1eld?

  A 5.0-C charge is 10 m from a small test charge. What is the magniq o8p e9n(grag*ievq ),g 3rt7tude of the force experienced by a 1.0 nC charge placed atro 378(a )qnip ,r *qtge9vegg the location of the test charge?

  Two point charges each haves r zjod,1gd0ggd3; a-n8)(sqd k 2mfe a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the tq- r)e,k d(g do3sfa;zjn 0g21g dds8mwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0y 2ytkzp 7ym,5/ bare ld3u,+w mC charge is placedtly 3 2,/da k,wm+5ybz7 yuerp at the 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 -4.0 mC chargfwc1/(bimo,/aooq 7ge is placed at the 50 cm mark. At what point on a line joining th o ibg7f/(comaow/,1 qe 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 = 4v l. un3,avac s 9jyle3pr:ude()zm0 0.20 m. What is the magnitude of the electric field.4 r:v)nuc0dve 3 mysl9(u3,zaajel p at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square ob n .cvgr5/yi) cd*cl)f side 0.50 m. The last corner is occupied by a -3.0 mC v.c b) grc)yc 5*d/nilcharge. Find the electric field at the center of the square.

  Consider a square which imesd. xb j(9 atdkin1;(fb(9ws 1.0 m on a side. Charges are placed 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 of the electric field 1t f(d9wsxkn(mab ; i.b je(9dat the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electugl2gg,dy 8 9nric field.u,89l g nyd2gg What is the magnitude of this electric field?

  A particle with a charge of thct,s4 g8ix8j k tlzb)le4,9 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)q0*gtm l )kel30k cfe electric field of 6000 N/C pointing downward. What charge must be placed on the ball forf)e 3 0)klkl gtm0q*ec it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball issfvs 238uc b7 jdrc/s:1raak+ placed inside a uniform electric fie 7ru8sda2 kc 13bsvras:fj/+cld, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of raundo4s+zck6( dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the ele6 +c(ud4nksozctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is theh-i0v4 g0y vux dd1r(e electric field dh0 1 egy4vd-ur( i0xv6.0 cm from the center of the sphere?