State the law of conservaev72ovh rfry:x40f qtja.v*wnl h 8:/tion of electric charge.

  Is it possible for two negative +ld z+q9mri4c9 vj 7mbcharges to attract each other?

  Is it possible for a positive ay6slxno 1:f r6nd a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duringool8s3)b)en x the process the glass rod acquires a positive )nlbso 3 8oe)xcharge and the silk

  A proton carries a

  The model of the atom shows q 58qu vq0vba0q3i l(vo7y2maa

  A neutral atom always hashi(j +xn4dk ,l

  An atom has more electr 8,ad2 c,c xuss(pec). dicvf a3r*tx8ons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei aj6*jwc d9s7 ge5* lyfmre referred to agjwf9*5yd *elsm76 cj s

  Materials in which the electrons are bound very loosely to the nuclei and can mdikl1( ( ks)crove about freely within the mat id(k1(skl )crerial are referred to as

  A negatively charged rod is brought near one end of an unchargev/7gsp:hw.p ejp m/z( d metal bar. The end of the metal bar farthestmpp jv/ezh7s:g/ w(p. from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They ar:te+5os w hb:ae placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statwao :t h+s5:ebement is correct?

  How can a negatively chargv *why 4tj6ihs;u-kdedk4zy; f),u 2x q-rn:jed rod charge an electroscope positively?

  An originally neutral electrosfd ;qg(2tw+*td 4c ckpcope is briefly touched with a positively charged glass rod.qdctk; dgtfw(c42 *p + The electroscope

  An originally neutral electroscope is groundem)v y:o, eh(ci.f rov4d briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ele om.o y)(rc,vhfie:4vctroscope

  A positive object touches a neutral electroscope, and the leaves separate. sk o:fx1fw.-+ou 8g,r/6 hrkenqi7w1hr*nrcThen a negative object is broug uk/ ,-xrgwwo:nrq7*s fkh orc1.f+e i n6h8r1ht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tabla :e*m7t:o-zj g -nvfhy9d(xb e. A neutral metallic ball rolls straight toward thf9 -agmd z (ntoxvb*yj-7::hee 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 Coulomj tif2*;t j:1y)qm nvvb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a di+dla83e lie,istance d. The first charge is larger in 3ilia8l,d e+emagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are place 2 bwrtjiy4c.)m5a3qed near each other on an insulated table. Which statement t4)bm 3i e wyjrca5q2.best describes the electrostatic force between them?

  Two charged objects attract each other with a certain foy31x /jzo my03ry6tn arce. If the charges on both objects are doublemryxt/nya zj163y 3 o0d with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fokdva z+el h6mi3m 54d0rces of F on each other. d 35h+me 6zl0mivk4 ad If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Whazuk; nl p1ze7 2rh/c gzb1a.u,t happens to the force between them if one charge is doubled, the other charge r7pklugzz 1, hu/za ;be2n1.cis 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 c e4v wed1*4lteme23znv:p n:1.0 m. What happens to the magnitude of the force on the proton if a second nv e4mcv:e42nwpe el : 1t3*zdelectron is placed next to the first electron?

  An electron and a proton are separated by a distanv6n )s;jt+ x9ioa qt+teu/ *juce of 1.0 m. What happens to the magnitnsa ev+o j6/+ uq)xij;ttt*9u ude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a 7( rihdck8 njb c:w78ddistance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m cl djridcb78h:k8 (c nw7oser to the proton?

  A point charge of +Q is placed at the cench;i.:bt 1wk j mkw6,/x)u adzter 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 the square's center. Now,ajthk c1z)idx.w:w; /,kbum6 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. When 5(2 0,g0 bz /2ehhippptk2ogifad;fvr e2nf8 a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. Whtevpgh hr22kf(, 0bdo g8z; ifpi2a pfen05/2at 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 a6iaew*osr*/ jn: jzih. 2ga9 v vector?

  At twice the distance from a point charge, the sh w:nkp80u+ ctr, 1inrtrength of the electric field

  Is it possible to have a zero electric field value between a negative and positib cui*.p*2ehj ve charge along the line joiningjc*h e.pbui2* the two charges?

  Is it possible to have a zero electric field value be9nwl2ybll -dwn ,82aetween two positive charges along the line joininl2 w-8ynb l nl2dea9w,g the two charges?

  Electric field lines near psitive point charget06ya7 hmf(e ps

  The electric field s.kr/5 d*m,v j0apuf6iw efmr6hown

  Can electric field lines intersect c3 nu vv4dv0di2+elo7 in free space?

  A solid block of metal in electrostatic equilibrium is placed in a1buv0oc..:x h vg v0s gblx i0ez:l/i: uniform electric field. Give a statement vb/1gcvxv l : b0iso0u:0hi.g e.x:z lconcerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametergxdo12y, f5l o* cbp8ys are each given t fy lbc p28oy5dg*,1xohe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woe7t5l3z+xu9dlio b7 z j6o9osoden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top s57uz j9o6 9xlise+3bd7oltz o urface?

  If a conductor is in electrostatic equilibrium near z1l61 hgnsem ).0*jv vbq3i dlan electric charge

  A positive point charg e5i-zgu.2oj91rdm4w3k i tiwe is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sdwk4.o m tez 9wij3gu- ir512iphere, the electric field at a point directly above the hollow sphere has

State three properties of cond wt0ci0xg5o/n;qb po3uctors in static equilibrium.

State Gauss's law.

  The charge carried by one electro 9b).n(aszsja8o( oa bn 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 protxf4jd 8tbl b)e *s.;i(xorw7jons than eleij.4t*d )lse r(b jowx 8b7;fxctrons does this piece of plastic have?

  What is the charge on7r+ 9ibgc0 z5xifgdl- 1 kg of protons?

  An atomic nucleus has d*57xf pcb+bs a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separateddok, o ty12 qhl8d-b(k by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw8( 1dl,yo2 b-htkod kqeen them?

  A 1.0-C charge is 15 m from a sv6haj ri5k+sy9pxc8kz.6 lk* econd charge, and the force between them is 1.0 N.p* k+hzx8 596clvk rji6 sky.a 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 8akut:i ys ss4v0( to0are they?

  The force between a cvfs ) 6l7i;5ja m4pcf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0hwq5) bqzg .d /dvsb a(io*,7v cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electricqd./7s,z*b 5vdwih voga(qb) force between them?

  Three identical point charges of 2.0 4:g9pm zpwy+q 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 4g+ 9wmpy :pzqat 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 t7( yxhsrq *ok3he x-axis. A charge of +2.0 mC is placed at 3ox(hq*y rsk 7the 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 force which acts on the charge at the origin?

  Three point charges are located at the following posit+skc6z5z6kthv+s d,bhj4 - p tions: 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 m-b kdskh5+vt 6 ,c4 t+sphzzj6agnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sq *yp5d1kpgxei4u 9n5(vmk io.uare, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electro.n k5g*yu(edpi9pi54m kov x1static 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 (r6kqg-c*xknhbz (zqw6/ qt ; nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the m-kqq;(6*c zwh6t n(rxg /kbzqagnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 aj8 hj9i-4xj,ht z. p*cxsj t1= -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 ojps 9 - ij4jhh*t,a8zj1xxtc.n the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticeotpppnxubk z w4ja+;63 9y).ps of an equilateral triangle which measures 30 cm on a side. What is the magnitude of tx.)n9 zk+bpj u4yo3aw6 p ;ppthe electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separah hbf08:l5 grdffme9g y /(;nhted 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 electroser mhhhdy (ffnbg8:0 lfg5;/ 9tatic force acting on it would be zero?

  A +3.0-C charge is atrbjmsa.i)hovj1 /y63mifa0 i2(ypi 1 the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed v3jii.m02ah1s(1i)j 6/bia y pyfmr oso the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at xn *d)l1 jjp1nk = 2a. Where can a third positive charge +q be placed so that the force on i pklnn1j1dj)* t is zero?

  A copper penny has a mass of 3.0 gvp vx64:ku/( nc -sofa. 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 by the attraction of a fiih f6s:e1l ybvns+8 4zxed proton some distance above it. Howv : s4yisb+ef1l 6nh8z far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threaa6s r58 o+neldds which are 30 cm long. Both are given identical charges, and the electrostatic repulsionn568+sroa l de forces them apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus hasi;c:ge) )zhch((e nyx3vmbx * a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleu 3z ()cibx*hyv hm;(ex nc:)egs?

  What are the magnitude and direction of theh;x;: jxif l0t electric field at a distance of 1.50 m from a 50.0:i;fht0j x ;lx-nC charge?

  A 5.0-C charge is 10 m from a small tes kxt.ix72 ald(t charge. What is the magnitude of the electric field at the l(x2itk.x ald7ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directc9z ehv-h .hn;ion of the electric fiec9;- z hnvh.held?

  A 5.0-C charge is 10 m from a small test charge. What i)w4.rlkvg jp7s the magnitude of the force experienced r7)kpw vg4j l.by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value o,01l*jx tci, klbn :03xuyeuyf 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point ik, lux 00,u yex3btc *1yjln:midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a otku n:ui-yb* 10gko8meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marko b ky0ut-o*ign1:8ku?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a )*kz pt*/*t . qatqoec-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two cha*tct./q*p )ek ozq t*arges is the electric field zero?

  Two point charges of +3.0 mC and -7.0pdr ) .xkrs c+.mor2e1c6b1zm mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pointsd+ ). 2xr 6c1zokrbepm mc.1r midway between them?

  Three 3.0 mC charges are at the three co tbhh55n7ao+jr r3d x20:bf4.rfreugrners 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 of the square.rur25ajxe7+rhb34rb:df tno fg h. 50

  Consider a square which is 1.0 m 9p v-v /vf )qpvjllrq7(1 bs4zon a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,v9 47rq1pv-lpvb v z)(sj/ lfq 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 in a uniform (0wl/zibk 8twf-;/t w3eufj belectric field. What is the magn -i38fw /w 0tkujt efw(z;b/lbitude of this electric field?

  A particle with a charge of 4.0 mCwagktx z/3 .uu+ve -bol3*p8q 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 elecnj6+9 8y2ewkbyi t z2ltric field of 6000 N/C pointing downward. What charge must be placed on the ball for it2 y92zty8wblj 6eki+n to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. a t5gx7ee f9*p The ball is placed inside a uniform electriceept 9af5xg7* 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 carries a charge of +2.0 mC. What is the magnitwwzj1+1 m7gs s7t6taoal .s* rude of the electric field 5.0 cm from the sphere'sao *lwss.tgt1+77jaw6zs1 rm surface?

  A metal sphere of radius 2.0 cm carries qdp 9.1.sy; kjnaxx33rset5 ya charge of 3.0 mC. What is the electric field 6.0 cm from the center of t93 x1npst.aks erd;qyyj5.x3he sphere?