State the law of conservad7e:dn6o3 sx7b xt4q ytion of electric charge.

  Is it possible for two negativ.e8r;)2fc2 xoy, rvi o bf3ezve charges to attract each other?

  Is it possible for a positive 5o,7ip q 8epri1y) qzfand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod mtvr*:lq/* u bacquires a positive chargml qb **t:/rvue and the silk

  A proton carries a

  The model of the atom showil8 s (bz abr8:,klch-s a

  A neutral atom always h) olcz9x +sqayrs/qbzb-f5.:as

  An atom has more electrons than protons. The a1ygr ghj3238j 9brveltom is

  Materials in which the electrons are bound very tightly to the nuclei are refe;xhdwf :o*fy9fhef(3 2yx*i a rred to a*3i h wd(9 :ao hf;2eyfyffx*xs

  Materials in which tv5 1hltkpa;wpu)opv*n8)b j- he electrons are bound very loosely to the nuclei and can move about freely within the material are refevp)p *np51tl h;o)k wbu- 8vajrred to as

  A negatively charged rod is brought near one end of h /,(u5w b48ocadpnvw/l *lyf an uncharged metal bar. The end of 8pdlyf/,a cwnu( owl/h5v *b4the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, i9kcl8 jkj d:7i.kuy:k z;hd8and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is corr;kku .lc y:kjik7j h 898idzd:ect?

  How can a negatively charged rod charge an electroscope posam6 n nk,r56vaitively?

  An originally neutral electroscope is briefly touched with a positive3d du8wr 9-; hdlz qfq*hg+ii/ly charged glass rod. The electros hgd8qu ;fh*/l3d- driw+izq9 cope

  An originally neutral electroscope is grounded briefly )mrc qh(2hso/while a positively charged glass rod is held near it. Ah som2ch)(/qr fter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the* jedblvz ithh/,+*9l leaves separate. Then a negative object itb9/e*dzl* vihjh, l+s brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. Ahxc2 hs,ot x** 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 obht sx*,c xh2o*ject. What is the final charge on each ball?

  Charge is

  What are the units of the Coullq 265lus(bab g.ydv 8o1 1gvmql,0vpomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d8 rxtgo5*exn(t,h 9 1fzr3se4h; gatg. The first charge is larger in magnitude than thtergh1x ; goz,nfh s53x t4(*reag 8t9e second charge.

  Sphere A carries a net charge and sphere B is neutral. n )-ecxof+n ;vThey are placed near each other on an insulated table. Which statement best nv+x)e o-;c fndescribes the electrostatic force between them?

  Two charged objects attract each other with a certain trf k,(+w;i)cytkh77l( hovnforce. If the charges on both objects are doubled with no change in separation, th +lw,cy7k7k oft (i();tvnh hre force between them

  Two charges are separated by a dista5,jj ucif x):lnce d and exert mutual attractive forces of F on each other. If 5u: jl) jcfx,ithe charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with * kie -l0fc5 zr*z1tzsa force F. What happens to the force between them if one charlzs0z 5t i-e*1f *czkrge is doubled, the other charge is 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 separafo h3fid l3zo ihk1wo2::kh :)ted by a distance of 1.0 m. What happens to the magnitude of the force on the 3ow:di2z3fk :): f1 hhli ohokproton if a second electron is placed next to the first electron?

  An electron and a proton are separater9vfc7gds .j8d by a distance of 1.0 m. What happens to the magnitude of the force on the fir.grf8c7sv j9d st electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance a usy -mnq9djd+z8-n; of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to th+nz-jm-y 9 qd;asd8une proton?

  A point charge of +Q is placed at th z2 db ,33ljf*tc/lkoke center of a square. When a second point charge of -Q is placed at one obkzlo3c 2* tkd/fj3l, f 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 +etl2 a)1feg b jq :nop-q8d3vthe centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's v ene2 3-oqpf:qg) 8 j1adv+btlertices, 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 other vertices?

  Which of the followin2yawaw,7 (hvzg is not a vector?

  At twice the distance from a point charge, the st wv3odh2 5.mo-iahli,rength of the electric field

  Is it possible to have a zero electric field value between a negativ, ep,oz84i6m7i dbnaewc: kg 0e and positive charge along thgodiz wbc:7n0 pm,6, e a48eike line joining the two charges?

  Is it possible to have 6iy1e oo u;)x3pob;pna zero electric field value between two positive charges along the line joining the two chargesooxon p; 3;i1e y)bpu6?

  Electric field lines near w dm x(fdf55 7x7,bjlkpsitive point charges

  The electric field showh09y2ch0mm ojn

  Can electric field lines hr -e7 v/h3n ozl5oi6aj9 n-aax98rw dintersect in free space?

  A solid block of metal in electrostatic.8n*ekzmon/8m.vr0n3xo c z 1de:rr x equilibrium is placed in a uniform electric field. :3r*e8 .r noe . omxr8dn kz0n/1xcmzvGive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are e lwr lz93jr;whrz1i;6ach given the same charge, the electric field (E) midway between the center and the surfac jh 6rwwl3rzl1;i ;rz9e is

  A cubic block of aluminum rests on a wooden table 11lbtv7 8o rakin a region where a uniform electric field is directktrbov718la 1 ed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium8e4ap ohw;h.owp9c /s near an electric charge

  A positive point cha2/nmaprn/r.sz)xs 2 n rge is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point )n pa/.szrxrs2n2 / mndirectly above the hollow sphere has

State three properties of conductors in static equilibrc2ac5 batv)nqn82(u p5rp1saium.

State Gauss's law.

  The charge carried by one electron )96uln:k7j cvbu*shr 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 more4bz7j vaa6+ d qx4ck:p protons than electrons does this xdc4b4a:6+ vkjaz pq 7piece of plastic have?

  What is the charge on 1 kg olyi,mbkw.i4t r-ppq/ wg)d),f protons?

  An atomic nucleus has a charge zcz6d,j1)aa;b1 vc7 q(eww ja of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepp3irl . r.arr3d) a3mfarated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the mag f33mrr irap .3.dral)nitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the4kp2h it ntf6 tbc8f0; force between them is 1.0 N. What is the magnitude of the sec; ptin h04 68tkfft2bcond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are theygoz+9yt . )smd?

  The force between a nx6c:-xso / ja$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expec*embd h*f; fap5 20+kpv5e usrience a 1.0-N force. If they are0pv5dce aum5b*2e+ khs *;ffp moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 5p;gyw1d qgj 8x-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 a1g ;pg5w8 qyjdre 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. .uf: yj1 mu;;)jjffjo0 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 markjfj; o1:)m f.u;yfu jj. 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 positions: Q1 = d5 bvjnki5:: d2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wn5::d vkbdi5 jhat is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed a7m)cozo:7 yjz t 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 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 charo yz7)mjc7 o:zge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 j ru dm rbfsxg8.5(ht,c8eam75;5sud= -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 chargeuaj(ssr5g8,;t57cer h 5bxmmud. 8f d?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0zp1*y tg,5h rx nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). ,g*tyz 1rh5 px 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 equilaterelf r*02;nsz ovbw6/cal triangle whicoclv sw6en zbf2r*/;0h measures 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 u; o a8utlm zc(j0)flmu:-y:kand +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 elect-cfm0 ) lyz tolm (aj:k:8;uuurostatic force acting on it would be zero?

  A +3.0-C charge is at the or e;).gfro:m (vfkmq:bigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can fg :e.mr kmf;v o(b:q)a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pl465xxngjfwhp3t q-h)aa. z +caced at x = 2a. Where can a third positive a54)hxj3tnp hwa.xf gc-q6z+ charge +q be placed so that the force on it is zero?

  A copper penny has a mass ki2e sjr)(3l xjq p4q;of 3.0 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 u7h1n s6sj o0(+dpt a2rm gm,cof gravity by the attraction of a fixed proton some distance above it. How far above the elec(amr2d1m n0jpsh u+,t7og6sctron is the proton?

  Two 0.20-g metal spheresi4,f6glx, -mwwr+ ucg bg-re0 are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apaiw6f 0 4w,r-cug+,glb meg x-rrt 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 elect umm*s,ir5b;iyd8pb)7t 7o4q1s kqb i ric field at a distance of ot,urb7sq;yiib8)kmdp47 s* qb5i 1 m 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field ata+2 * sqg+vx37 pkaxus a distance of 1.50 m from a 50.0+qs7a2v3 xxkapgus* +-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of kcxgc+ 1o r.e,m0ovc1the electric field at the location of the test x,rcc c0ovm. e1go1k+ charge?

  A 5.0-C charge is 10 m from a small test charge. cenzvis;0f e dz 4 fjd(9u(:*f What is the direction of the electjzudn9 ; vsed:4z(fc(efi f0*ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thn vyc 4cp5 cvd3id-)l+e force experienced by a 1.0 4inl + -v) 5dcccvydp3nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are se/zbv 3umh+roo ;zptv4av 41j; fc+1foparated by a distance of 4.0 m. What is the electric field at ocrv4j1 fvh/z 3 boaz4+ufom+vtp1;;a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chaqrp2 nr8dth, 73zu9g grge is placed at the 50 cm mark. What is the electric field at3rru 2gqpz 7h98 ,dtgn 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 cha :8wx+xzh56r5wfxis-e3 og p/dd 2,wtuwyr 8i rge is placed at the 50 cm mark. At wha rxgo+wdip5s2:53hrwif e, wd6u x w/xz-t88yt 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 9fnjijp))o.: s q;y5 ka/qdrn at x = 0 and x = 0.20 m. Whatpq)nq .sy dj5k;o9)i r:ja/fn is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cosn/zce*/ yx1 krners of a square of side 0.50 m. The last/zn/*s1yce x k corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plac :ty0wkl.eb(fh f2u(h ed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); bh fh.kty lw f0(:ue(2 +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. cmib(id6p( s a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of t im((6s. bcidphis electric field?

  A particle with a charge of z4 on6tl/nwg.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 fioiyj1delx *z7 g: 7:+pw8u jydeld of 6000 N/C poin8xo jdg:ejdl7iy71* u wzp+y:ting downward. What charge must 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. Thf1y,qla k n d4;mgce-4e ball is placed inside a unifoq41glac;4 m -yk n,fedrm 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 carripdh/ zp8jun) m n0 vuf)s-0f6bes a charge of +2.0 mC. What is the magnitude of the electric field 5 0nvf 0f)db -m6 )h/z8sjnpupu.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carmx ,pw6 l34cqbries a charge of 3.0 mC. What is the electric field 6.0 cm from the c m3x64q, wblpcenter of the sphere?