State the law of conservatiof:+h6f82w c:gzagq 2ngh:wua 8 qu1xu n of electric charge.

  Is it possible for two negative charge 3ks8)mnylg; bs to attract each other?

  Is it possible for a p2 ti.um/qjo a-ositive and a negative charge to attract each other?

  A glass rod is rubbed /dasi564 *ld cnxk ,etwith a piece of silk. During the process the glass rod acquires a positive charge andis4ln,xaddc/ 5 ke6*t the silk

  A proton carries a

  The model of the atom show jb)1xwcyd49lsx5esdz/fqy(ma96 m 4 fz 6vi0s a

  A neutral atom always haot cp1j 0fa+eys-axq9j c5 .x,s

  An atom has more electronsethb7x/)+5ql u+etlktef, : r than protons. The atom is

  Materials in which the electrons are b;u)qxyg2m4hhl 1tt chj5n97 uound very tightly to the nuclei are referre94l2 un h ty1hmct7xgjq;)uh5d to as

  Materials in which thm pji 6)b(f3t8rgsa6le electrons are bound very loosely to the nuclei and can move 8bsi 6rla6(p jtmf )3gabout freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bmc.h zv;:+ l eaj (dfm6cnw9ov, eo,q:ar. The end of the metal bar farthz oedv6f; (wc macn:qh. 9,o:mej+lv,est from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne iip z3n)9wa(lutral. They are placed near each other onzw 9np (ia)3li 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 poq9v qb dmxwg72 p3hx: ljwd;64sitively?

  An originally neutral electro 0fd)tt.qv,s jscope is briefly touched with a positively charged glass roq0 vtj,f. t)dsd. The electroscope

  An originally neutral electroscope is grounded briefly whj*/3n ) lk3nqdyod /sds*vt. sile a positively charged glass rod is held near it. Ad n*s /n*.qldtv yosjkd)3/3 sfter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and t0+ n myvb:b:a9buol- d/kl0*ca c1 beghe leaves separate. Then a negative object is brought near the electroscope, but +::yccmb9lb ln00a1o -ka bv/*bgd ue does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insu c;,1jgn8vpj7.qghf 4 o k,c:fw5y0vqwlv 7eblated 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 firsf:ol qn , 87cj jvgkp 1.yhew;0gq,5v7cfv 4wbt 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 Cou,ay;eikc50+qm63zhtfdm 10 bn elm i:lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. n2rinl*iq +jjcf4 otq z8 ++(fThe first charge is larger in magni+ *8+2c(l qrtif+ fzqojj4n intude than the second charge.

  Sphere A carries a net charge ot4t,mml1cyb3 +wk8ihi- am(and sphere B is neutral. They are placed near each other on an iaoiktmw1 tm,(hicy 3b+m 4-8lnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with xh*l):z. q g5/ erk hs8b2roxva certain force. If the charges on both objects are doubled with no change in sephes:2h ql*x rbvgrxo .)z 5k/8aration, the force between them

  Two charges are separated by a dist tv,2 e78mrh3mdo,b oyance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forc3vomt72d8r hybom ,,ees?

  Two charged objects attract each other with a force F. What happens to the forcn3el; qj knfjhbf45 *1e between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers iske1hj4 lff 5*bn3 nqj; reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a(hg-)7ak x*.m4c ewrf05q lv hrdn2je distance of 1.0 m. What happens to the maxg nc-7) *w5 devfame.r j4(hqh2r0 klgnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distassk io5f6df(9d uwo6 9nce of 1.0 m. What happens to the magnitude of the force onsf dw6u6if5ko( sd 99o the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a d :ur3.ezsf,td istance of 1.0 m. What happens to the size of the fordt,zr. s 3e:fuce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When wb1i1 bk rc4q(a second point charge of -Q is placed at one of the square's cb( 1qw4i1bk crorners, 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 1sga(:/h s+ m 2:zxwq/9isyuq8eq rkiplaced at the centroid of an equilateral 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 force that acts on the center charge due to a gyze qk+qqss/(2i: x/si:819 u hramwthird charge of +Q placed at one of the other vertices?

  Which of the following is notrgu3xy+um2+ y ,zli,s a vector?

  At twice the distance from a point charge, the strengtn k sod7yv4.bl0qswr l*29ge6 h of the electric field

  Is it possible to have a zero electric field value between a negative and po xsxb*0n1 pc vjd9nmyv51jf- se))d-asitive charge along the line joining 5v x1- yenjsd -nj*dsf p)mc9 xb)a01vthe two charges?

  Is it possible to have a zero electric fi4sj(s.b69 zkve/ s*m/r jju6n.ur odueld value between two positive charges along the line joining the two chargeu4 /e6dj.o m kj.9 z 6(jvur/rusb*nsss?

  Electric field lines near psitive point chargec)ep* x0u zy cn5y276 /pdc7 ibtqfhz;eg;r -ss

  The electric field shh-j0 bqjqs 9(c (xa4cgown

  Can electric field lines intersect in free space?wj205ze 2g3) sro 0dk ep3ccvd

  A solid block of metal in electrostatic equilibrium is placed in a uniform el92f/mrbq *c unectrif bnq2m*/ ruc9c field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphez)gqu-q)7uzg93df fokw tt n8c5:d u*re of equal diameters are each givedw 3)t8 -ou qgu)ftzf9z:*d 57ku qgncn the 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 wher th lcn6*xs)2re a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sur62hr*lxc nt )sface?

  If a conductor is in electrostatic equilibrium neaxx,nw6e vk q0ll p.rpi rp4(eqf.p*(7r an electric charge

  A positive point charge is enc)qus+rtfpx ds)8d;6ow--i ip losed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere )u-pioqdfsd)p ;rxs 6-t+iw8 has

State three properties of conductors in static ex. so0lxr fr3dfd;:9tquilibrium.

State Gauss's law.

  The charge carried by one electrq7k( gc,r,5;waszfp;yn y7ea u(kj s*on 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 p/dnb 1r1zfv/ ni5l) acrotons than electrir c11 za5dfl) vnn//bons does this piece of plastic have?

  What is the charge on 1 kg towfxb3k 9mns8 *2c) lof protons?

  An atomic nucleus has a charge ofoh32p4dn kn))iixxr2 $+40e$. 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 ohv*s f1 et,0onf 2.0 and -4.0 mC, respectively. Whtnvh* e0fs,o 1at is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the f7ot1a6tz do* m k:()(qfgurkforce between them is 1.0 N. What is the magnitutd:ufkk*t17oo mfr(a6 q z(g)de of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. btw6t eg8zhp;xpy4j 33l:j )pHow far apart are they?

  The force between a acy)5axd (xx/js 7;uy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apar g11)jcgrp o7yt, experience a 1.0-N force. If they are moved to a new separatioyg) jgp 7or11cn of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The8 hzw1;a m0t4af kgrb8u11z9r21zz2tt qn ebw first charge is at the origin, the second to the r zra zt92ue12zt818 brn qazg1wtfk1;m w0h b4ight 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 charge at the origin?

  Three point charges uu4grd)yffsbk)z 9 s8z m9,+d are placed on the x-axis. 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 100 cm mark. What are the magnitude and direct9 f bfd)d8uzsr4syum )k, 9g+zion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located qs 1*t7d*esf zat the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00f * 1d*qzes7st m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is plax8jf 2i4mt9c 5p umck.ced at the center of a square, and a second point charge of -Q is placed at the upper-left corner. 9k .mfj4itcc2pu 8x5mIt 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Qu2dpij 0 )m wwkgswd, 5-k;np-:d9 + tzwa8htr2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC c08 dtwk -n+pmr2,dtw k9wwa dp;)5-u:sz hjg iharge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nmdr*1* t w)ya eyn4/cdw7hr0fC is at (0, 0). What is the direction oc) dh4 t wd7rwa0 *r1ye*fm/ynf the net force on the 5.0 nC charge?

  Three identical charges of 3.0 b(/fyqymuas): a1p 3bmC are placed at the vertices of an equilateral triangle which measusa bu/b 3fpy 1:myq(a)res 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 by 3.0omjl9t2g vol 7 -qq75sc,bgb/ 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 acg boc/ lg59- 2j7s,q vloqmt7bting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m.p )r bbm2tmk+x;g5wp9 Where on the x-axis can a third charge bex +w92mbp5tbkg)r; pm placed so the net force on it is zero?

  Charge +2q is placed at thw f:eqz(9pq)yz.) dzke origin and charge -q is placed at x = 2a. Where can qf zk:9( .dezyz)p)wqa third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3 bk+9dgo:b; /xmj *woyfqh9.w.0 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 the force of gravity by then s.bzw4f 9om6/ +k +e/eyx:ovlin8qwi r0w:y attraction of a fixed proton some distance above it. How far abn.0vy/iw qowsem4wn9 6 x +b/o:il+8fzre :yk ove the electron is the proton?

  Two 0.20-g metal sphe+otu fu2om9;qres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostoutq+u9f2 ;mo atic 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 azuzxf+ svor0*:zoe 43 charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from ovuzf4:3r z+oz*0esx the nucleus?

  What are the magnitude and direction orwz1z*f xhioljz d93z6 4: r-;5gyhjcf the electric field at a distance of 1.50 m from a 50.6c rf-zo9rj wgld1zy:z34izjxh *h;50-nC charge?

  A 5.0-C charge is 10 m from a smallieq(y a zr4m ,c;d)nut -yxd8, test charge. What is the magnitude of the electric field at the location of the test charg;d r yx -,tu4mda)(qc8ny z,iee?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thevhxq2c+sij2z9bl3 y - electric fieyb2z2vh-3ijx9+lsq c ld?

  A 5.0-C charge is 10 m from a sma c)f2l0w8, gc8kv63np(8)k+ qqao nquhgw subll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location o f)w wuualqvgn b8,nsckoqg88)hq6p2(0 3 +kc f the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanczcwj,m0 - fnx5dfj4*i e of 4.0 m. What is the electric field at a point midway between the tj,wn*d4xm f0 ci- 5fjzwo charges?

  A 5.0-mC charge is placed at the 0 cm ma m n+ox;w+nln7 21vcu 4qxxq9jrk of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electm+ oq c x9n4lwuq+j7 vnx;2x1nric 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 charfrb)o8y cw9fv-j k0q1 ge is placed at the 50 cm mark. At what point oo9q1cwb jy-f f vr)k80n 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. Wh4) rds nhtr0ex. .ivs,at is the magnitude of the electric field at the point m0d,ev.)r xn.sristh4 idway between them?

  Three 3.0 mC chargeshm8 4leyn;b qn(r3//bug+omy are at the three corners 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 th3/umhg m+ ;b yr/eqo8n4bny(le square.

  Consider a square which is 1.0 m on a sid3wetmoyp8s 9 :dq.mb1 * tpk0ae. Charges are placed at the corners of the square as follows: +4.d3s m pyok.qw*81:9te 0tp bam0 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 isaq 8v am.o59ci placed in a uniform electric field.q 5oi8ac.9mav What is the magnitude of this electric field?

  A particle with a charge o-9(d iya-moj3waj ht (f 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 ele5v s hurp.s;bfm.;oc0 jj3 2gectric field of 6000 N/C pointing downward. What charge mu cpv5b0 euo.j s;r2mjfhs3g.;st be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T734bb+uhlbjf us + n4khe ball is placed inside a uniformblbk+usnj+7ub43 f4h 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 carries a charge of +2.0 na/mwd+5 u l/dmC. What is the magnitude of the electric field 5.0 cm from the sphe wa+dd5mn /l/ure's surface?

  A metal sphere of radius 2.0 cm carries a chargete 9f8cw 2(c+;pfed+aigs,pd of 3.0 mC. What is the electric field 6.0 cm 9d ;d8pi fctsfweeg2 p( +,ca+from the center of the sphere?