State the law of conser ,z ,y+t4q:ouc1ub pe2n mqi-rvation of electric charge.

  Is it possible for two negative charges to attrac3,strqr(x 1s*nam. pet each other?

  Is it possible for a pww dvnjtbq64 06hr h i1v7i(j.ositive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process tf(d-*hbt fjm u1,zqu 7m7bsa1he glass rod acqb,uq afu hb7m-1z*sj1t (f m7duires a positive charge and the silk

  A proton carries a

  The model of the atom sho vrwbkv +8g,vd *ydy/9ws a

  A neutral atom always hancf 2.lyjggn4 :mm1p (s

  An atom has more elegm78vhe:c6wk ctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the n te1) -(5rbyvz5dq syh/qqp1dzd3*aruclei are referr drqdeb rs1qy5/dqt *(-zphz3ya)51ved to as

  Materials in which the electrons are bound very looselo x6obwyqkcy 3)e21v z.crh)d5 3o2c my to the nuclei and can move about freely within the mav.m 5xd62 )2 cyyqo3c 1oo3kr)weh czbterial are referred to as

  A negatively charged rod is brought8 qw4x eudj0onsqr 70 foz-5,j7mfy:s near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rm-,8 yj sre50wfs7xnqzoo:q 7du 4jf0od will be charged

  Sphere A carries a net po s9irbus9mpj,+c6-wgc l0y ; wsitive charge, and sphere B is neutral. They are placed near each other on an insulated table. bw0sy scw ji9+m- p6c,r;9 ulg Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cha nvciw9x+d(sks5n10w2um8r c rged rod charge an electroscope positively?

  An originally neutral electroscope is briedbzsgsj (xa l);/6k f-fly touched with a positively charged glass rodbf6j gal d xs-kz();s/. The electroscope

  An originally neutral electroscope is ground+q lfx9 ); ccwpiu,6d)z) tiyy rcp:i4ed briefly while a positively charged glass rod is held near it. After the glass rod is removed, th);yl: 4f,cd zy9 6ii +irqxp) tcwupc)e electroscope

  A positive object touches a neutral electroscopwmb-5, d (hkto1kx8 noe, and the leaves separate. Then a negative object is brought near the electroscope, but doesn8(tw dk5o -mk, 1xohb not touch it. What happens to the leaves?

  A large negatively charged object i1 qe7 5ekhq6,r 2kmihcs placed on an insulated 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 first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. What i 7e5h hkri c,1em2q6qks the final charge on each ball?

  Charge is

  What are the units of the Coulomyte s3zonfo: q6jbn3n011-jmb constant $k$, which appears in Coulomb's law?

  Two charged objects 4f1.t 2jjv,t7ypn gogare separated by a distance d. The first charge is larger in magnitude than the second1,ytg72j tjf n.vg p4o charge.

  Sphere A carries a net charyt0ms 2,c*gioge and sphere B is neutral. They are placed near each other on an insulated table. Which statement beo yts2cg* ,mi0st describes the electrostatic force between them?

  Two charged objects attract each other with a certain forh.aimj30m0 s.lvx 9 clce. If the charges on both objects are doubled with n 0. ihjmcslm 03.lxva9o change in separation, the force between them

  Two charges are separated by a distance d and exert mutn 3w frfsm.vgz,c- q4:ual attractive forces of F on each other. If the charges are nrq,v-zw3 fsc:fm 4g .separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othezj(p3is t,ecd4 1tz2or 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 reduced to on3 z1e 2cspiz(t,djo4t e-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distanpu4 qvna5r(v:ce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is plac:apq45nvr( u ved next to the first electron?

  An electron and a proton are separated by a distance 53yr7cu; opba ry7zcvo5 .c4jof 1.0 m. What happens to the magnitude of the force on the first electron if a ja 7c.r5ryco op547 ucvz; by3second electron is placed next to the proton?

  An electron and a proto/ xe9lor4w7)xlt9qi6sp gqr* eq7n u-n are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m-xu7rns/ielop q7q* 4e96wqxgrlt) 9 closer to the proton?

  A point charge of +Q is placed at the nu .k2so f67ulcenter of a square. When a second point chau ok 2l7u6ns.frge 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, 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 t*j e2c3)d wwfnriangle. 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 third charge of +Q placed at one of the oc3ewd) nf*w2jther vertices?

  Which of the following is,u6.r.c6c 1 ek i,1t;ifzqxhakjk wf; not a vector?

  At twice the distance from a point charge, the strength of tvc;e;q0pc,xpshha 3f ;( vj )ihe electric field

  Is it possible to have a zero electric field value betw m c(r:zghjn;*ze3o;twg8 d*geen a negative and positive charge al:;z g(d38g mn ;gr *jwh*cteozong the line joining the two charges?

  Is it possible to hav88l(ydfqxhuti 9g; ko(+ozyo *y- b:t e a zero electric field value between two positive charges along the line joining the kof+;tol(:quhyz yyb8 d-x(9o t8i*gtwo charges?

  Electric field lines near 5w/oxnf)t5)uy b gsb2ag1gk p,tx( rlx1g;t.psitive point charges

  The electric field shown oxb v)mw:,le;. bts 3cse a;(k

  Can electric field lines intersect in free spresbp4 9n sw/m*o 4g;dace?

  A solid block of metal in electrostatic equilibc drj,4 k y6+/f)rnxkyrium is placed in a uniform electric field. Give a statement concerning the electric fir,c4jkyf/+y n6 xrk) deld in the block's interior.

  If a solid metal sphere and a hollow metal sphe7 (j ub5tfz6ipwhnsg64.:ix bre of equal diameters are each given the same charge, the electrij65(h7pgztbx 4 b:w.6nfsu iic field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a m 6/8busf8hl) g j u)bqxen p);31aeqduniform electric field is directed straight upward. What can be said concerning the charge on the block's u 6g a xp ul)e3fq));jmdn q8s/hbe1b8top surface?

  If a conductor is in eymci7 cia;u2 h8 l*)kplectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a h y*v*+loniqr1huchp (14lt ; hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly alt h1cl+h4o*u(hv n 1yiqp ;*rbove the hollow sphere has

State three properties of conhyc(dff j/:7p6bn sq r8:nzg3ductors in static equilibrium.

State Gauss's law.

  The charge carried by one elect -wmi3r;v9fhhm q;g5 cron 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 5eaw8ech).t.f b k-hs n m,vt/charge of +2.00 mC. How many more protons than electrons doafwtebs.- 5)me .k cht8,nh/ ves this piece of plastic have?

  What is the charge on 1 kg of prot n.rkcfvgx- 3f7304 ecq2ke6liq s9ltons?

  An atomic nucleus has a charge o6aw/r bkc(f p7f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatvz rb2t m0c2hbkk b./2ed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is theht2brvb 0m22zbc/k.k magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwpoy, x :e/wk6x fy0j)reen them is 1.0 N. What is the magnitude of the kpr y,w:xo yj6)f0e/x second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far a5u l2f*y eb) 6wri)uffpart are they?

  The force between a -a7fsj /ne8ez $30 \; mC$ 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 they a i02.ls3u; brj0(n5agirvsx zre moved to a new 3s nz 2b(;s0laur g0 r5.iijvxseparation 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. T 5 le.6dva5znnhe first charge is at the origin, the se.zadelv6n 55ncond to the right 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 ikp+qg;f ;( mxl /c:ndare 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 t i;nx fmqpg(:/dk ;c+lhe 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 m rw54*cxbku yg8uccgcfjkex.v)-; -)C at x = 1.00 mk8*ub fc-e)kv .-xyg; ccgwj4)c rxu5 ; 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 charge?

  A point charge of +Q is placed at the center of a square, and a second po m)j;s-sdstse,67t nhint charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on 7n-dsts)mt ejs,;s6h 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 nC 7zvb/ (ie.u ffb;rf/j is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net f/ (e7bbr f/ifzf.jv u;orce 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); Qeultx*qjm4 mo r rd0 *9fcz5;(3 = 5.0 nC is at (0, 0)qlz r5c4em 9d*0m(ourfj ;xt* . What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilr)+ofql+nog2 ateral triangle which measures 30 cm on a side. What is the magnitudog r2n lf+)o+qe of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whicc vr6s5 -srlk z0)nsr*y o.nc1h 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 thos6-rsr0snkyvcz*l 51nr). c e 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 = 4.0 m. Where eqjg * ndj3(m3on tn3 jde3j q(mg*he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin an(d -vfbj 21pm5 vm (y(aizk;ttd charge -q is placed at x = 2a. Where can a third positkvv-mb( j y5(pf21(;aitdm ztive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o zqht4. n/xdrd,7 dh7c+mqc6uf $4.0 \times 10^{12} \; electrons$ 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 t ,c lgwq2 :9fpxkx ;-dm*vz8mwhe attraction of a fixed proton some distance above it. How far above the electrovk8 2l*qdz9 p:cw , m;mw-fgxxn is the proton?

  Two 0.20-g metal spher g2: jz 2zcg ypj+ce:.tbwgr(1es are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical chargy+::jpgwc1 ct bzrzj.2g(2eg es, 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 the elecjaw-* csd yaud l91(8htric field at a distance of 1.0 m from the nuca w*-1 ahcdl8syuj9( dleus?

  What are the magnitude and direction of the electric field at a 955 eov1rg,luq( -yy addmzj0 distance of 1.50 m from a 50.0-nC chargorde- u9m yjld(y z1v 0,qa55ge?

  A 5.0-C charge is 10 m from a small teu , )v;n5y5xlhslflu7st charge. What is the magnitude of the electric field at tl ,xf h)u;nll5 57uvsyhe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is6iea;w ;lm6d 8susybgk/.9 ,gy*ehyfga 5 ;pq the direction of the electric fi,ly ;y.a5pfb ay/h6gggqeksue;mi;98* d6 s weld?

  A 5.0-C charge is 10 m from a small test charge. What is the mag(;si( x 6ndrzcnitude of the force experienced by a 1.0 nsi6n(c;r zdx (C charge placed at the location of the test charge?

  Two point charges each have a .ny3, awuv hzo5pns2)value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point m.wyn ,s nzp5 ovuh)3a2idway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a 04r rl)c*pc-gj rhk5b meter stick and a -4.0 mC charge is placed at the 50 cm marp*j5-0k gchcrlrb)4 r k. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a ml7nr:4maot4o 6j r,zreter stick and a -4.0 mC charge is ro,4lo 4r n m:taj6z7rplaced at the 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 ano97(-ul(0 ox4zlri em xgjp.nd x = 0.20 m. What is the magnitude of thejxn4ploe i0oxl.(-z 7ru g( 9m electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o 7jwgv52yjbjyfyk* lx-4ifi .563jfcf side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squb2 jgf j x35iw5if*yj kv y6cfl4yj.7-are.

  Consider a square which is 1.0 m on a side. Charges are placed at the c76.( nhlq.( or;xtlda gymwz4orners of the square as followwy dtlgaq(4 mz ho;6 .7nx(rl.s: +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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unifxmf- u j7rf8r/cc v)4lzkmwv(d:)sc 5 orm electric field. What is the magnitude5fcr ld)z (m4kfxv:s-vm/7jw8 rcuc) of this electric field?

  A particle with a charge of 4.0 mC has a ma k,xnv1b 67s*y48qv g)xwmiryss 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 el/paio9.y qns0ectric field of 6000 N/C pointing downward. Whay0snqp9 /oa.i t charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2u e*jn (+h,asz.00 nC. The ball is placed inside a uniform electric field, and is suspended against the*s zeu +(,jhan force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a char z-:e18fc/xy uc)kctlge of +2.0 mC. What is the magnitude of the electric field c1/x):fktc-l8zc eyu5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.wvhr xxh2.:3s bk ,yv;0 mC. What is the electric field 6.0 cm from the center of the spherhsr.kb:xw 2hx3 ;v y,ve?