State the law of conservation of electricwg2bdoea( g5 6 charge.

  Is it possible for two negative charges to a*j/j9q )tc doettract each other?

  Is it possible for a positive and a negative charge to attract each oqen acji;4 /8ho-qa7sther?

  A glass rod is rubbed with a piece of silk. During the(6bc w:b :s hu) y/93km jtdu1u;pxtal process the glass rod acquiru pyc:a (b3s hujtk /w)l6dx9 b;1mut:es a positive charge and the silk

  A proton carries a

  The model of the atom showvy ago1wyt. ,5s a

  A neutral atom always 41/u;ew7t)casnr t 1 trytdqta895qe has

  An atom has more electrons than protons. The fgou a2 n1l .)vxq1azu8s+z2bjp4ni (atom is

  Materials in which the electrons areey(5og ya/ttkj82; e/lvbo ) w bound very tightly to the nuclei are referr evteo2j/o)ga(yyl/b 85t; wked to as

  Materials in which the electrons are bound very loosely why( ,( :nnjy(kz*mihrvr o-kv34 g5ito the nuclei and can move about freely within the mathz4* nik( 3r5yjg,y(r mnivwho ( -:kverial are referred to as

  A negatively charged rod is brought near one end of an uncha3tyv.j. y hvjer ;sb 7j4x)eg9qb/ sy3rged metal bar. The end vx ;hs b.jgysqtj / e j)v73yybe349r.of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B984l 0 edtrczv is neutral. They are placed near each other on an insulated table. Sphere B isr0ltv9 4c8zed briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively cbme*i-r3qje (ny ;.wr ,nu)oqc.x. g/wsoa6eharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with sicbfjn3s2d7 cd b; 1 sxg-p39a positively charged glass rod. bs;3df sig3 sp9jcn -72cbxd1 The electroscope

  An originally neutral electroscope is grounded briefly wh uf6fh,f-d 4l:a xvv q:l6v*zzile a positively charged glass rod is held near it. After the glass rod is removed, the electroscf-*ffa6,4v6z :q vvu dlzlxh:ope

  A positive object touche8qi,twhd vv9gko d48 ,(ior 1ws a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What hoqdok98 t 1i8rw(h,vwv d4i,gappens to the leaves?

  A large negatively charged object iss).tp h2gmm7l 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 does2hlmsm.pg)7 t 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 constanoe ff87v 9 (zix0l)azrd6r5twt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is lo0 3hn (+ql k*eazs6wbj)er-sarger in magnitude than th-6s je(l hkq*eza 3bw0)r+osn e second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plws) o9af0e )vjaced near each other on an insulated table. Which statement best describes the electrostatic force bev))j wa0e fso9tween them?

  Two charged objects attract each other with a certain force. If the chargekgdd idvr*vy(,, 0f7al6m b2xs on bo*rg7,0a i(vfv ,yx k mdddb26lth objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces o :6ehwlf5juc57: 9wkc;pv yt but9vu:oc;; uqf F on each other. If the charges are sepalq ck 9t9u h6 j; t:uw75fuv;cye ;:bvwp5uc:orated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the *fy xj7fsuap e-c3 xxo ,6)z6x) on9*w osagj,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 original value? The force is now equaj)g,zw- 36asxxc*)7 9a,o6* xxus y fojnofpel to

  An electron and a proton are separated by a dlg tj1n(q,ea5u 0 q+p+ k.dyjb19gspvistance of 1.0 m. What happens to the magnitude of the force on the proton if a second e59.s u pt q ejbn,j+(1q0gga pvlyd+k1lectron is placed next to the first electron?

  An electron and a proton are separatit2 l +m dqqtg7)ndi51ed by a distance of 1.0 m. What happens to the magnitude of the ftm+2ltd iqi dg 5n71)qorce on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.04ycn( 5sq 4r:+zdloon m. What happens to the size of the force on the proton if the electron is moved 0.505ons4 4dnzo q r(ly+c: m closer to the proton?

  A point charge of +Q is p:pxg :.)wh zwrlaced at the center 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, identical charges of -Q are placed at the other three corners of the square. What isz xhp.ww r)::g 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 cenromg*guo.; s qw 80n1stroid of an equilateral triangle. When a second charge of ows g*us;o g.rq8m0 1n+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 other vertices?

  Which of the following ;dm;) ochz58 ry kjcj9is not a vector?

  At twice the distance from a pkp905zp nrtfq f3msml8va/ mdi 01f09oint charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and poscp8-3) qhwf2 nv8 sgpyitive charge alqfg8np2s-)38ywcp vh ong the line joining the two charges?

  Is it possible to have a zero electric field value betmf,)x7jt nl a;ween two positive charges along the line nmx ,) lta7j;fjoining the two charges?

  Electric field lines near ps5ilfon 6oxh: 8itive point charges

  The electric field show ue5 mm2ouei/)n

  Can electric field lines intersel0(w qq pm4o)9m 6ec 1yq7iaayct in free space?

  A solid block of metal in op fl(r 5v rztgufnxr1y 03)(/electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the3)ov5rrf (p/(rlxuz f n10yg t block's interior.

  If a solid metal sphehjgdq(4pd /w1 re and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and th(jwqdg1h4pd /e surface is

  A cubic block of aluminum rests on a wooden table in a region w7s;ij b/ utz;chere a uniform electric field is directed straight upward. What can be said concerning th;iujs7t/ z;c be charge on the block's top surface?

  If a conductor is in electrostatic equiljy07y6+ +x/g jamecmg bafa:+ibrium near an electric charge

  A positive point charge is enclosed in a hollowyh+,doip3; o u u77elb metallic sphere that is grounded. As compared to the case without the hollow sphere, the el u 3+ed,byh7; ou7poilectric field at a point directly above the hollow sphere has

State three properties of conductors in static eqd 8jm2g/i()hnli 6awhb bby6)uilibrium.

State Gauss's law.

  The charge carried by one electron/us.5 qczx q;t 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 nefwwry; g: h/u ;jy7fta4b b7h,t charge of +2.00 mC. How many more protons than electrons does tf taw;7b:w f4 g/;7hujyr yh,bhis piece of plastic have?

  What is the charge on 1 kg of protonsyj x6gykm v.v*7go39 l?

  An atomic nucleus has a cha n euiie1)(t(pyg3jz+rge 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 v z5i+sfz)jtl 4:9 yyb2yn6hwcharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force y4 h6+2zflyz wt bsv9 y)ni:5jbetween them?

  A 1.0-C charge is 15 m from a second charge, and the fo*peqm/tv l)1orce between them is 1.0 N. Wh *e1/qompvt )lat is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are tdmvnd*oh 96/w+kdq l85jvt+h hey?

  The force between a gunm2zu ds)j 4 zifb),g)pc.ex4 oz1;$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2d cmw92sh dv+p,:mu k;.0 cm apart, experience a 1.0-N force. If they are mo2,m:+ skm;9u dhcdpvwved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placedv,hlfsixd:y* j+g 11y 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 directiox1 v, syhjy*:l+1 dgfin of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is pkob ggfofqmu8(rq 0z.7a6a)8 laced 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 direction of the electrostatic force which acts on the chg ufbqor7akamq8oz6.f8)(0garge at the origin?

  Three point charges are located at the following po sbig8xh8p,h+( 84k dtszou;nsitions: 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 magnitude of the hg48z8 k b+thxss ;(dpi,u on8force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a sew3) +xwh wadw1cond 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 chawwwx )hda3 1w+rge 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 is at (0,x.j1yw7f4u;fmv jpkwa 5 :p 0c 0.10 m); Q3 = 5.0 nC is at (0, 0). What is tf0jp.mcu: ay4vk7 xp 1f;j 5wwhe 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); Q3 = 5.0 nC is atkxs/ 2u4ewdi + (0, 0). What is the direction of the net ux2s/i4+wekd force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices o00. uhkc8 o .ezufg2irf an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thefk.0 huiozu20rg e8 .c charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. rwtv(fz;7/ j :apxqx: At what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostaxz x(wf:jv:;p/aqr 7ttic force acting on it would be zero?

  A +3.0-C charge is at the origi oam,j 3pud2) exhwl:;n and a +9.0-C charge is at x = 4.0 m. Where on theja u;elx:2o 3m)dhw ,p x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q isx3k )cpspoez+ 3m6e93f yb6vq placed at x = 2a. Where can a this)3cpx+fv6b3 9zm eypq o6ke 3rd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3ibhg2e wt8)p,k( /yltj9 7a yc.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 agains,.qzc+qn rvkk6wj3l+t the force of gravity by the attraction of a fixed proton sojr3lcq6, +wv+nzkk. qme distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poigmp,0 h4ap.:)ev5u wud4a efynt by nonconducting threads which are 30 cm long. Both are given identical charges, and the elecuh: 4e,)y uf4v0padag.w5pem trostatic 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 magnitu n1m 5u1idfb ,.c3rwaede of the electric field at a distanb 13 r.awce1n5fi mu,dce of 1.0 m from the nucleus?

  What are the magnitude ando23 zg/ izdohbuinwsrp0e,sa (o) 2*5 direction of the electric field at a distance of 1.50 m from a 50.0-nC cr3 0)5asonzh s2e u gi,powo/b(d2zi*harge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o.dc2u5 t.t aiygiy):of the electric field at the l..y ii2 gyat5dc )uto:ocation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. r-bo(n 0b;-qca aq,c,d,a5xd1dkph.l zowq4 What is the direction of the electric bqp,r;xo1,cad 5c-nkqa.0qwd4 o -,d( lhb azfield?

  A 5.0-C charge is 10 m q9gz.iz5nx* n from a small test charge. What is the magnitude of the f9gznxq .iz5*norce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C iz3k b,g;s jj, kf5d 4xy;v:dsand are separated by a distance of 4.0 m. What is the electric field at a point di3b ks,d;:5j 4;jyfszv, kxgmidway between the two charges?

  A 5.0-mC charge is placed at the 0 cm 7ye tvxgc f/tgq.2n,; mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mar;/g nq2ty x fec7t,g.vk?

  A 5.0-mC charge is placed a3o oz; zm7cue*t g,hg ;.h1jayaz9(rv t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mar emv;jg1cg7 a h9ooyz,u.zz a3(thr;*k. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 5npyqgv;7m sv v0*x )ilk zob-at:7z;9g7ng v mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between 59;q:n 7 bzlvvno0xazspk gmitg 7)*v;vg 7y- them?

  Three 3.0 mC charges ar 7wi9trv*i;ele at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.09 r7lvi* iwte; 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*a0ot v30j,/bf dn nv *ipveb+ placed at the corners 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 electric fielf+/n o0,e jt vb*3*pdnvbi av0d at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is plac-nr4iuqj4 mrnkw)w4+ ed in a uniform electric field. What is the magnitude of this electj+-r4n4n )wir4uqk m wric field?

  A particle with a charge of 4.0 mC has xa ek0 u4y,c85kdtn:ga 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 and1z/j5evx ocb ;6p c5n electric field of 6000 N/C pointing downward.1pczc 6xnb d/; 5jv5eo What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a ch lu me-bwtcsk1ir8hm ttd2 04++4z2fearge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of fi28 mm2t-0k14tcd+rhuewz t 4+e sblgravity. What are the magnitude and direction of the electric field?

  A metal sphere of radifl// y)fsrg,1kocd2tnok+/d us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cmo,dglo/d2ytk/r cnf 1+ ) f/sk from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha 77;x.thpjtc(.j9zez ln lw f (trb.t*t is the electric field 6.0 cm from the center of c(xlft9e..bltpt*t;r zj.7(h jnw7 z the sphere?