State the law of conservation d 6 ik w/o,7j4nmhb5t+u+i obrof electric charge.

  Is it possible for two negative charges to attract ,bj8h;klme49l tt7en each other?

  Is it possible for a positive and a negative charge to attract each othe;jjvuo1im4 9-dys7 ea l5bh k)r?

  A glass rod is rubbed with a piece of silk. During thyk.4sdcdm+d 5 e process the glass rod acqcdd4dksy +.m5 uires a positive charge and the silk

  A proton carries a

  The model of the atom shows 8aosd56 n,wdv 9;wchr a

  A neutral atom always hn6v 3 lhv7un*lc9yuu0as

  An atom has more electrons than protons. The at -xikf91rc: waom is

  Materials in which the electrons are bound very tightly to t uhj tyq/:23da v+l5qxhe nuclei are referred to asy va2qlq+j 5x3ud/h :t

  Materials in which the electrons are bound very loosenb + ,p 6v.xxw6bkmhu(ly to the nuclei and can move about freely within the mater66w xbup(+mn h v.,kbxial are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. q; 4dwh4rb0oqey5y( l The end of the metal bar farthest from the charged rod will b0r4 (yheq5wdy;l4 bqo e charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac 67b +sv3zku29qecq*p;;1 znyl 59phocxhvcg ed near each other on an insulated table. Sphere B is briefly tczq qb56y;n3 pgcl h9e+o u7s;1 zh*xvk c92pvouched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscop5lwh,rzz -k1e*2s f p2ofnn2qe positively?

  An originally neutral electroscope is briefly touched witu8 :ogf ir3lz ta592bdh a positively charged glass rod. The electrogu tfoz9d b8ri5:a3 2lscope

  An originally neutral electroscope is y*f jwuzp(:h b50u:cpgrounded briefly while a positively charged glass rod is held near it.yu:*:0 uzwpp5h (jfcb After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the lea:w.t0fm3 ipe ressu1v 78v m0gves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to10r7v8fwe s . m3pu0e:vmtsgi the leaves?

  A large negatively charged object is placed on an insulated table. A neu6-k kjs z.nf(rtral metallic ball rolls straight toward the obje s(kf 6n-z.rjkct, 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 m4sl) ovcnw-l0nb2d(j vww-0Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thuj,)b:0 azq/b-rcib k llaj1)e first charge is larger in magn1 l:0r)i lj ubjz)-q/ckba, baitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. s c;ww u26tz+f+liv s+tlf(5w5oij-a They are placed near each other on an insulatedl5ws+-wtzi+taf 5sfw;uj io+lvc(26 table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wv.e/ lg/-uteskd2t y+jxl+f 4ith a certain force. If the charges on both objects are sjt +.-d4et/uxgk2fley l/v +doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcek agz8 mh0t2eepn8c;5s of F on each other. If the charges are separated by a distance of d/3, what aame kn8zgpe5h ;2t0c8 re the new mutual forces?

  Two charged objects attract each other with a force Fh095zx(dr nq p. 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 onxdr590qz (phne-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens ,f tzqd;p/n 9eto the magnitude of the force on the proton if a second electron is placed next to the first elect/, 9;dqpz enftron?

  An electron and a proton are separated by a dista;lp - od2x0,.w;a8mpym6iup w+ ctspence of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next pe c.w2p +t pmyop;ai,8d sum- 0xl6w;to the proton?

  An electron and a proton are separated by a distance3(j8uy t (f0j xrcttgd-:5a xc of 1.0 m. What happens to the size of the force on the profx 5 c8tca-jt3(u0(:rtjgy xdton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squ,j ct/d a7ejat(1ll rily-2e3are. 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 is the magnitude of the net electrostatic force acting on the positive j2le1r3a /yl decait7 (jtl,- charge at the center of the square?

  A point charge of +Q is a079yv a it3x5 zf*w/gy khek5ws/p,aplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangl,5xp af5zkwega3t/7 vw9hsi*/ y0kay e'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 followin76x5 w)pg (h0dsgo5z4u zqrgzg is not a vector?

  At twice the distance from a point charge, the strength ,1ho/u2w tm-jnwd qf1 of the electric field

  Is it possible to have a zero electric field value between a n 9 vj(+ie*o( dcjp3yjxegative and positive charge along the line joining the twoxvd (*e(oj3pjcji 9y+ charges?

  Is it possible to have a zero electric field value between two pl7a0wq p:sodsmj6os5 /0u w3vositive charges along the line joining the two charge wo0 j v/usm3ads7wp056losq :s?

  Electric field lines near psitiv z*4t(nbq .htfe point charges

  The electric field s/ xyq7.dhv8; q qszv5ac7a qwc y;.3qnhown

  Can electric field lines intersy3zfx pma*0i(4g3uki ect in free space?

  A solid block of metal in electrostatic equilib8 wyp;o *y7,ary uayz4rium is placed in a uniform electric field. Give a statement concerning the electric fie;u7ayo4py r yy ,wa*8zld in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each ju4 : dqe3mu+v ,q4yewgiven u emv:ewj d4y3,q 4qu+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 whereeveme m;p)h0 l2joc0: a uniform electric field is directed straight upward. What can be said conel0mm2o e e;hvpj :)c0cerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriuckoci3t+w ( ;(;4/(obs xo uk*xtbgqym near an electric charge

  A positive point charge 7z l-y1 j4sfekpk( kb4is enclosed in a hollow metallic sphere that is grounded. As compared to the case wib z4s j4yk7pe1flk (-kthout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in sta:e q43,f q owub z+gb.eqz45dvtic equilibrium.

State Gauss's law.

  The charge carried by oneg7vt* :swy:mlg lft*, electron 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. Ho8hso(w/:l + lsq6j k6 p/vbivcw many more protons than electhqcjowpk6/(l :l ib6v+/8sv s rons does this piece of plastic have?

  What is the charge on 1 kg o2 igdwmr9c tmr12/tx3f protons?

  An atomic nucleus has a r/.xh zams(m 2charge 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 a ;xe-t( 6jgskond -4.0 mC, respectively. What is the magnitude of the eleto6j -(ks;gx ectric force between them?

  A 1.0-C charge is 15 m from a second charge, *j8nk5 qztgk: and the force between them is 1.0 N. What is th*qtz5 g:kknj8e magnitude of the second charge?

  Two 1.0-C charges have a force betweenfksthl54((tt6 a/mo1cfv f)n them of 1.0 N. How far apart are they?

  The force between a 1rzf* /kn6 q brpxv-e1 zyvk3+$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apf b03 y0vvxp2a6vsb11k bu)qtart, experience a 1.0-N force. If they are moved to a bb1 2ya 0v) p0tqv61ks3vfuxbnew separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 c+ b f1 *t3nginsjtfuv*1 2d(bmC are placed on the x-axis. The first charge is at the origin, the se*bttnsb+u1f 32g*d(n fivc1 j cond 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 are placed on the x-axis. A charge of +2.0 mC is placed y((krkq6t/ 5vx1qvd q 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 acty( kx tdvqkr/q6v15q( s on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 8.8,9z4j*czk uvl h6xmoy0 .n k rbzbbmC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC j0vzzb98ck6y h*mk8n.ul4 o. bb, xzrat x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placb moace129l(fed at 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 positimb 9olfe(2 ac1ve 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 j2.(:/k dqj0y gb evfxm, 0); Q2 = -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 /2xd y(q0 v.kegj: bfjon 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 a w41l3hvcrt5 x,af .i/zrlhf -t (0, 0). What is the directh z.xf-vr c3 4frhtl,1ia5/ wlion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at thvm(f9pyoi9i * ex 1mynj:wr :-e vertices of an equilateral triangle which measures 30 cm on a side. What n9oj(-rp:we9*y1y m :ifmxviis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of f.d3i7t swcm./slst1 +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be pcds3s s.mf 17t/i .twlossible to place a charge of -Q such that the 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 = 4rh8w;6qp r zo caq (e8i0*oc0c.0 m. Where on the x-axis can a t ic8p8 rqh*;oq6raz0w c(oec0hird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wggw8zd/9oykh .z;la3w9le*chere can a thir89k;9 lag wly3zgec.do* h/ wzd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0b vqehrsx+1 +* 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 the attraction o7yp8ux q(s *tgf a fixed proton some distance above it. How far above the elect8 *(typ7sxgq uron is the proton?

  Two 0.20-g metal spheres are hult2lc: 9--cjku7ouc y ng from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglcu cy9 7j clkoul-2t:-e 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 magnitudev)j o6 .x5qtexos5t gj0w52v c of the electric field at a distance5os56q)tco.2j5wv gxxtje0 v of 1.0 m from the nucleus?

  What are the magnitude and dxufmh8n8 bf lj*iw,6(6y /dgkirection of the electric field at a distance of 1.50 m /fx(dkn8 ilu,6wbfg*8h m 6yj from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudgsv/n,zh4/l8 i0qy*ku pc/opgqo e0 ,e of the electric field at the location of the test cv 4 *0gok/lpy0zqnps / g 8i/ecqo,u,hharge?

  A 5.0-C charge is 10 13; z6, zkozrsq0 3fo6 q.t scohty6hom from a small test charge. What is the direction of the ey6,.tzoofs c3rq;3zo10t6qs ozhk 6h lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudeqafjz/*sp j,* /n 1gbrxpb- y3 of the force experienced byjabsx*-1*gby/jf3q z/p ,rnp a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan7xlr5yej ct 19j9dl0zce of 4.0 m. Wh501l9de ctr 9y7jx jzlat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 u8:up ,t4odilcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is dui :o, p8u4tlthe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and g(eceulm lh2 9ey5-+ fx)ch2ia -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges -x+gcil fee ec52( )9uyhh2lm 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. Wh5tm qq24wxd9s;b:i f dat is the magnitude of the electric field atq ;2tb xmw:d4 iq9dsf5 the point midway between them?

  Three 3.0 mC charges are at the threerq34unhnpq)*. zrx/ e 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 n*n/34pu)r. xr eqqzh the square.

  Consider a square which is 1.0 m 9q1r+yigsge*e+bt -w on a side. Charges are placed at the corners of the square as followst1g9g e+*wyqrb is +e-: +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 mC2lt8dzh xwk 0 it,3 s7gvg/v(w9fg )kj when it is placed in a uniform electric field. What is the magnitude ok3h gx gd)l,s2f j/i8wv wvtt gzk(790f this electric field?

  A particle with a charge of 4.0 mC has am.kk;s29 , hizwfkc 6j 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 field of 6000 N/C rek3 rp wxgkb5inkv2hb7. +; /pointing downward. What charge must beg+;xrn p i v/k3kbk7rb2.ewh5 placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carri 09t/fgrk; tttrchw )8es a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravith ctt9f0t/w)r t r8;gky. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 c7ft+ 2hwtx )(r:ckkwdm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the tk (7+krxdwf ):wt2 chsphere's surface?

  A metal sphere of radius 2.0 cm c zu052n vd3 .vi6sksdiarries a charge of 3.0 mC. What is the electric field 6.0 cm from the cented2 . kd nszivs3vu5i06r of the sphere?