State the law of conservation of gu5lw 66efk8 k:fxic .g.k ai.electric charge.

  Is it possible for tg q*88lw.nma cwo negative charges to attract each other?

  Is it possible for a positive and a2qw:qi ;q ggdce/f0o / negative charge to attract each other?

  A glass rod is rubbed witvqv22fvmez,lxnr9 b d3dp-(r ff6) 3w h a piece of silk. During the process the glass rod acquires a positivlx zmvf2 rn63(3v)9d fqr2fpd vwbe-, e charge and the silk

  A proton carries a

  The model of the atom 1wtniv;jv(p;4 eft:t shows a

  A neutral atom always ha.e(zfq iz p,ow2tpg.+s

  An atom has more electrons than prot 1.ezshh0 zm*0iw-iz tons. The atom is

  Materials in which the electro y44sfi 0:i*0cgmanamm1 ork 5ns are bound very tightly to the nuclei are referred torgysi:m5m4fc * ai 1omka40 0n as

  Materials in which the electrons are bound very loosely to the nucipa-s8 qzi *k1m-qt r5lei and can move about freely within the material are -aqr5tim8-ik spz*q1 referred to as

  A negatively charged rod is broug- p(z+f:utx0ogk 8 gymht near one end of an uncharged metal bar. The end of the metal kugf0+:zg- tm p(8xy obar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are place *(,9j bzrdovnjdn7t(d near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement z(nj t ,97ndjo(*r dbvis correct?

  How can a negatively charged rod jte34 v3sd,p19pa kndcharge an electroscope positively?

  An originally neutral electrosco.:tdbh t0kx k7pe is briefly touched with a positively charged glast0dt b7xk .:hks rod. The electroscope

  An originally neutral electroscope is grounded briefly whsr+igp 5sb be-g 2/kn2ile a positively charged glass rod is held near it. After the glass rod is removed,s+5sgi nb r-2gk/ pb2e the electroscope

  A positive object touches a neutral electrosedz6hmk:zp xc w62f d vaq619x h15/ho8ptcl)cope, and the leaves separate. Then a negative object is brought near the el/c 6m8zc1vx :aqo 652wxhdfpk )1hl9pzdeh6tectroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral m,a*xdtm e8ur0etallic ball rolls straight toward thextm ed*0r,8 ua 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 Coulomb constan r61 upku j(tu(/hyn+et $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerghhqhkr/j7n 4/1c qs + in magnitude than the second charg /4hrnqj/7qg+hkchs 1e.

  Sphere A carries a net charge and sphere B ikr 1 ,lpi 2mudr3+a-tls neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatl irm-l,+tkr2da u p13ic force between them?

  Two charged objects attract each 4q plln3+egy/other with a certain force. If the charges on both objects are doubled with no yqnl4g/p+e l3 change in separation, the force between them

  Two charges are separated by a distance3g fik. wkv52/lmg ba) d and exert mutual attractive forces of F on each other. If the charges are sepaa b/g2ki ).l f5vwgm3krated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wnd km .6jny;n6hat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its ori yk6njd.n;nm 6ginal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What ha r):9bmz tf,zkyd:a-lppens to the magnitude of the force on the proton if a seconzmk)ry:9lfta ,d:z - bd electron is placed next to the first electron?

  An electron and a proton mmd+28vp e097.o chbdbohy7+e ail cr0 07 ytsare separated by a distance of 1.0 m. What happens to the magnitud td7+mr s7dvbic.0+ myh7c0 8 92a0ylbeopheoe 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 distance4 be 9xdv*i lb44c gwrb 5d2)5nrhjd7p of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer cnel hd rdr dv44bw 4p97x2)5big*bj5to the proton?

  A point charge of +Q is placed at the center m ix4 jm8q8+sotwua6)qc- kdbr2d -j5of a square. When a second point charge of -Q is placed at one of the square's corners, it is sc8-ob8j5dtm)-q 6 qrj2aux4wkdim+ 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 equilateral triae8dc-1x27axm( e+1 v mk oi 1aajcz.sgzpi68jngle. When a second charge of +Q is placed at one of the triangle's vertices, an eja7j ee1dcs6 v.gmxzko( 1 2am81pai+z 8cix- lectrostatic 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 following is not -4rgrr)4ztaz3ke g8 ja vector?

  At twice the distance from a point charge, the strength of the euoubf(e * 2i,xlectric field

  Is it possible to have a zero electric field value between a negative and p-h zsvow*: (iqositivhv(w z-io:qs*e charge along the line joining the two charges?

  Is it possible to have a zero electric field value0ixixclwyy-c71 +vys4 d *2nn between two positive charges along the line joining the - y04iv21x*lcn iwncs+yy xd 7two charges?

  Electric field lines near psitive poiz sh8s:12:x x65a1qz:bdfl ikcrebyf8 g,l2fnt charges

  The electric field shown7m:p*klcy(d x

  Can electric field liiss3goi z8 yt,vuv,*7 nes intersect in free space?

  A solid block of metal in e vhvxn mnv -:,+uao,a9hq aa*),x gw4ylectrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field iaho q4g* :uva, -wyxah,x)n+an9 vm, vn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal 8.tre5pf+ctdcxml,9m ir4,x diameters are each given the same charx lx5tmm.c i98rpf,d+cre,t4 ge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in ahjh(vki 2px/- j;oh1ejyv(c 3 region where a uniform electric field is directed straight upward. What can be said concerning the chark(oi32(hpjjv/;hyveh1 xj c- ge on the block's top surface?

  If a conductor is in electrostatic p5)qt qoaw/m3equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere +:7judk9 tuvh that is grounded. As compared to thedkuv: u9j+t7h case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static eq2kht2mdnm b ;3uilibrium.

State Gauss's law.

  The charge carried by one elecx 6yfyvdhim y9g9 +21tl,wk+btron 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 than elec-ldr id8 ln-d2*bw w,ie,9 ytl4,oktctrons does this piece of plastid-,dt,oe cy8b i -2ldll i *,nrkw9wt4c have?

  What is the charge on 1 kg )epml.jw-m n,.mw:j h of protons?

  An atomic nucleus has aak1wq9oo2btab ;/ p*zq 3(rexc x y-(x charge 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 -4bq47+mbyz8l1)-uufs x5 y*ecpxc gp5.0 mC, respectively. What is the magnitude of the electric force between p*b 5417p- qc5)gue y8zl xubsfm cy+xthem?

  A 1.0-C charge is 15 m from a sv lris/ caus;y/3*cl3 58 pwcmecond charge, and the force between them is 1.0 N. What is the magnitud38c ps/*r/ilv csc3auw5ym; le of the second charge?

  Two 1.0-C charges have a force between them pmk3;t a:x21 3z e-iuhtfws 5wx vs.8aof 1.0 N. How far apart are they?

  The force between a -l x 9e 1t-fw dtzase;oryz9h76dp;m.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially b-fqv9;i wy ih(na4mz/5jlx ; 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 f9- 5 qyj nb m/a;ih4fwz(;lvixorce between them?

  Three identical pointwr:tys)y n; .v9v,46 y j2vg1p fhzjcc 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 cm mark. What are the magnitude and directcv; 9z:1fyyr,cv4 6 yts ng.wh)jp2 vjion of the electrostatic force which acts on the charge at the origin?

  Three point charges are plg j1 -njx(g,ggaced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0-jxjggng ( g1, 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 lo ;at sshglf:l:hwu-i , ,x2f.scated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x =-sf:,i:2ga ths;., sf hxwlul 0; Q3 = -5.00 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 seconhda6() o 2y7 ql8zkkjnd 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 8dzkanj lykqh o7(26)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)mx/ mo d4jt nc:ine1-)*s:aow; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (4ow)1m/ -oi ts : *dcjemnanx:0, 0). 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, 0.10 m); b2i+a: l xg.rrQ3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chi .arr+2bl: xgarge?

  Three identical charges of 3.0 mC are placed at the vdml5 ;kfj;4 v:; zblhkhx;aa1* njtft2.c)cz ertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elechjjfflxa:v1ct ltd n4;ma;hk;5 ;c2zb. *)k ztrostatic force which acts on any one of the charges?

  Consider point charg x whk-z*x+nuiwzl(cm-u/ c; ;es of +Q and +4Q, 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 -ix ;mw*wcuc -lh kznu z;+x/(it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is 3e1xgf e*p 1ucat x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it i1*fp13e gexuc s zero?

  Charge +2q is placed at the origin and chargeiu(6-9w,mlbf u) *rz-bdmgqozy , up1 -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero? uuiq9,f wd y-*mr1zu )(6,pgmoblb -z

  A copper penny has a mass of 3.0 g. A9gr9f+p1g mox11ciozu;u ld 3 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 aga:9rjzbc4bjg83e)i oo:t */t c 2bboitinst the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the t3cbotrbi8/eoi*t 4 :z2)c jobj9bg :proton?

  Two 0.20-g metal spheres are hung from a common point by noncon6*3( eajtuta 2z pm3r(nokje/ducting threads which arejan *u(pm2zj a e(oe3t3k6r/t 30 cm long. 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 magnitude of thoo/ hyibus*piy/3r9w 2 j2fdr09s ;ure electric field at a distance of 1.0 m s2r*r o o jsyhb9f/0/idu;2rwy uip93from the nucleus?

  What are the magnitude and direction of the electric field at a 7 foojej56t,qu-7hz g 65lp ywdistance of 1.50 mye,lqo6-wtzjgo5 j 77 u5fp6h from a 50.0-nC charge?

  A 5.0-C charge is 10 m fr -jio4y0dr2(edu k iv2om a small test charge. What is the magnitude of the electric field at the lr0- idoed2yiu2(kv j4ocation of the test charge?

  A 5.0-C charge is 10 m z;e:yvm7 d/nzma.+u afrom a small test charge. What is the direction of the electric f n+:vdzu;y /emaa7m .zield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude a*md *5jj.s80f u -jzgpilwq+of the force experienced by a 1.0 nC charge placed at the lodjqw0l +agfm zi-jps*u8 5* j.cation of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distancnc )ed *h* 8*93snkxrmv,gqtqe of 4.0 m. What is the electric field at a point midway between the two ccknsq* d* r3*x m8 hn9g),tevqharges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a qgu;eouo75(b+w t ot3r6c (3 lbu da6w-4.0 mC charge is placed at the 50 cm mark. What is the electric field at o(o bwtbw6u 5 g7qo 3ldu3ect6a;+r(uthe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a.yu5i1p mq( 56: mgnde2tqr tj -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargeset m5dt5g.:j iqrq 6pn1y2um( is the electric field zero?

  Two point charges ofcgt.h)gvrl1uw9d : -b ;xocl( +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fi:gd9-.lcotxgv)( l1cw rhu ; beld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of sidsg.9z0v-obo x;c(+ srjy7h fse 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field .9 xs -o+bsgs0 vyzfroh(;jc7 at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the cornh)(1nadovi+,ov dzqk g 60ir2;n+dtz ers 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 ele2hd+ ,0ka)v zr;zit (dvgqnno1oi+6dctric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it vgv yx- )i6x5c .sf wbn::s6tdis placed in a uniform electric field. What is the magnitude of this electric vg6s:w-cfvy )xx5 .:t b6ids nfield?

  A particle with a charge o2oz,nxrgxrzda* ,5 5p 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 electric figbq 8 vc1vy,fjjbseg9 i +f d60e3:5tzeld of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendqve1:3j bcy5,gd+bftvei0 g6j9f 8 sz ed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placedyv72*s*)w wsrv- oto r inside a uni*sov-)ww*r v trs 2y7oform 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 sicec015i, ow carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f ico, 5iecw01srom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge n6ylf9 6le6*uu zgj l-of 3.0 mC. What is the electric field 6.0 cm from the center6yfg zl* eu6-llu nj69 of the sphere?