State the law of conservation of ele ud(*.w*f1pqc3g 6g x/gmr bckctric charge.

  Is it possible for two negative charges to attract each other? q5 ;hinnu0xq q/d2/m4rojb r9

  Is it possible for a positive and a negative charge to attract each ohf.t*hw7.hc w ther?

  A glass rod is rubbed with a piece of silk. During the process the glassemgd74j (z m+w rod acquires(zmd wm4e7g+ j a positive charge and the silk

  A proton carries a

  The model of the atom sho r;m ayiumw3b:5b0p 6qws a

  A neutral atom always hft eb85ymenmzqksw0 7; *.5xz as

  An atom has more electrons b;,klcpbl8//4o z fjnthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referry. (-zrlxga e*ed to -ez*alr.g (y xas

  Materials in which the electrons are bound very loooio2o /,f-f fhlsfm./b hfd l8 w,k7+psely to the nuclei and can move about freely within the material are referred wfbl i fdmfp-.fl os+7f k2oh/8/h,,o to as

  A negatively charged rod is brought near one end of an uncharged.s-)uo68 hud * o5se gceapb7x metal bar. The end of the metal bar farthest frop basc-g5o7s *uod .6xh8)eeum the charged rod will be charged

  Sphere A carries a net positive charge, and)v1b93o8crn*i vbl sr nis5g* sphere B is neutral. They are placed near each other orrvi) 5gsb n*l8nscv *3i1b9on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrosc 0v anv3kwdcyxs+0 p+5ope positively?

  An originally neutral electroscope i0m.z,. lhb)tyd,z b zfs briefly touched with a positively charged glass rod. Th.0d .bz )bz,ylhtz,fm e electroscope

  An originally neutral electroscope is grounded0 b :cc8o )myerrdb52m briefly while a positively charged glass rod is held near it. After the mmc e: y)2b8orb5cr0dglass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separa t(6gr ,japs8qv9s c;h*4pwoqte. Then a negative object is ;gcrqja4,qp s (p6o9 w *htsv8brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is dymx/9sy.c2 zplaced 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 s.cymdzs/x92 y tops. 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 Coux 0ie;9c(fknylomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separategv5v; pdk3 7ssd by a distance d. The first charge is larger in mag;3gpvv ks5s7 dnitude than the second charge.

  Sphere A carries a net charge and spherel ;8zcvjc)cgnh3i ,0wmh:xa . B is neutral. They are placed near each other on an insu8zvcl0:c n,g.x hh3mc);iwaj lated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o,lh p:*zwi0bq4za 0q wv3 8g0s2slnqfn both objects are dq0 ssb:p,zw4qzvl i*8nl20 fgw30qhaoubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces cucxt q 7/u5/gt 3a,oiof F on each other. If the charges are separated b 3iu57,x/gtaou/c ctqy a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F.a3i d4o)br cm* bjbx6: What happens to the force between them if one charge is doubled, the other charge is tripled, and the s)b: *d6ma4b3oi brcj xeparation distance between their centers is reduced to one-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 to 1alfsu(50bltr ws94q pj-l gp,nz 7w-the magnitude of the force on the proton if a second electron is p(l tgj57q4af ns0 r-- w1wslzlp9,pu blaced next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.c vnfw8,8g c2l What happens to the magnitude of the force on th 8v,cwl2f8 gnce first electron if a second electron is placed next to the proton?

  An electron and a pro85h hsk1uv31 c5 0qq:p ipm:)xkp owmz*whk n5ton 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 closer to the proton:kqz5wp k 1)3 vp 51mkhhqosw* hpcmn5:ixu80?

  A point charge of +Q is placed at the center of a squargcpt3au9 5f:axs 0ppos(/kl 7c fi7-re. 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 ospx97pri al:c7k/3uff og0p(t 5 ca-s ther 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 centro0:n+z7e5os px 3 blmroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on ix lo +03p7er5ozs m:nbt. 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 nop 5j,9kgg 0ytst a vector?

  At twice the distance from a point charbo +6pz, )g7 myywnx.nge, the strength of the electric field

  Is it possible to have a zero e,xo9kwzabs +tw+2 7y6 rcq9 fglectric field value between a negative and positive charge along the line joining the sxzg trw+ foq6cwk,b7ay+992two charges?

  Is it possible to have a zeroo7m)d 4d2cm ,wlva*kl electric field value between two positive charges along the line j*oa4mll c,dw7v2mk )d oining the two charges?

  Electric field lines .9ut:il 5*/1xjvhzt7gw;gqv *0dnmb dz2gpz near psitive point charges

  The electric field sho.qq:x;yaw* d,v v /n /dkbe0fqwn

  Can electric field lines intersect in4o9 t-cpl e nsgh/t2t1 free space?

  A solid block of metal in electrostatic equilibr i22teqnp9du62v*5-ly vsrkt ium is placed in a uniform electric field. Give a statement concerning the y vrtd6v22 lpnte*ski9q5-2u electric field in the block's interior.

  If a solid metal sphere and a hollj/ /fn9q 2 cz7xcsfqh8ow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centeq xj/s7cf8q hczf 29n/r and the surface is

  A cubic block of aluminum rant0i wc(cu 1,4o9ssjt ies57 ests on a wooden table in a region where a uniform electric field is directed straight upward. What can be se s0oj95(ttw ci4isc1 u,as7naid concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elect 0uuagu,u oux,8*b3tjj 3-j4 sxpq38zl:vq hdric charge

  A positive point charge is enclose;kdkh ,) /l+ okidrs3pd in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric fp kkh,ori;s)3/ l+ kddield at a point directly above the hollow sphere has

State three properties of.k81s d;wpr df conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isuwhn:pc5m 4) k(.b fgn $e = -1.6 \times 10^{-19} \; C$. 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 manj m0fu*nol ry.w10my 6y more protons than electrons does this piecwrfy .*6 j 00ol1ymnmue of plastic have?

  What is the charge on 1 kg of p1 ,(j:gokmve , cl ha -4-c5duohu/twyrotons?

  An atomic nucleus has a charg:pc f, (;o4uf oum1r qh-jsyt(e 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 ay.zf a+f)e-mfnd -4.0 mC, respectively. What is the magnitude of the electric force az . m)ffyf-e+between them?

  A 1.0-C charge is 15lw7;1umrd2b9c- l sdy m from a second charge, and the force between them is 1.0 N. What is the magnitudelw9d 1b7c2y- ;ls udmr of the second charge?

  Two 1.0-C charges have a fork -c.vn /sm-. pfvr8zrce between them of 1.0 N. How far apart are they?

  The force between a 1nw 0;w8zs2fe* mzbnr;rc v5j$30 \; mC$ 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 for+cbs-2; usp1hrd w(on mt 5no)ce. If they are moved to a new separation of 8.0 cm, what is the electric force between;2ocsmpu sd-1(w+ robn5h nt) them?

  Three identical point charges (,lh v gug1(*x kjc3ccof 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = 5 ugh13cjcglc(,kv *(x0 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. Aoy o2*ck.j3zu 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 the magnitude and direction of the electrostatic fo*uzc.k3o2yj orce which acts on the charge at the origin?

  Three point charges are located at thsn3t- .pu o2sye following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 o .23n-p tuyss= 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, ak de8v(e9xqmy-a 91sznd 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. 9d ysxz e(8mveq9-k1a 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(l lfz sh7g)4,a uwmp7 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnfz7 )hs74u , ga(lplmwitude 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 :nbxmhu*;5-yar mp/ zwv37fr ); Q3 = 5.0 nC is at (0, 0). What is the direction of thfx-3ba5y:m;n* rzr7pv uwh /me net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plaevb s.e3e4c kfpv +d14ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargec1 3.b4+vks eepdfv4es?

  Consider point charges of +Q and +4Q, which are separated by 3.0 pe/3z-dw mn(0uk ce )oosz0raz;+k,w 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 it would be, cr0 kzaowo s -0n/+zeu3(wdp mez;)k zero?

  A +3.0-C charge is at the origin and wq ;+y0t3 akd70ls iq(k.ovzfa +9.0-C charge is at x = 4.0 m. Where on the x-axis c7vs(od i0qw0zy+ q.;3klaf tkan a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thdrv vr.jw4ma04gy9xv2 x.g q4 e origin and charge -q is placed at x = 2a. Where can a third positive charge +q be rq0 mw2vd gxa494xg4.vjyv . rplaced so that the force on it is zero?

  A copper penny has a mass ofsitn.(4gccy 14se*iq 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 fnyn7 p+dq 0b .4ch-91ly bevih)0xih zorce of gravity by the attraction of a fixed proton some distance above it. Hq+in-9l yv.h1 d0hizcx) n0by7bh4 peow far above the electron is the proton?

  Two 0.20-g metal spheres are hu;kdzyy; + y/.whi(zyz9jthmg,.lc:dng from a common point by nonconducting threads whichl+yyt :z9hd(dizhz;/gm w j,.kyc. y; are 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 magnithw,u ,fo+3ep eude of the electric fifp+uoh w, 3,eeeld at a distance of 1.0 m from the nucleus?

  What are the magnitude and dib lc1grkle:m)*j 4myjwh-6f c0vz -9w rection of the electric field at a distance of 1.50 ch9 ej *6l0-4wlk jrbwgvcf)ym m:z1-m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.2ot :moxw.e vo0+ pqy8 What is the magnitude of the electric field at to:m oy8x+q2peow t 0.vhe location of the test charge?

  A 5.0-C charge is 10 m from a small test a+vyq,5r8x hccharge. What is the direction of the er+ ,ayh cxvq85lectric field?

  A 5.0-C charge is 10 m fwoou.6+cn(z h7yo5 iarom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locaiwu nz.6ac7+5oy oh(otion of the test charge?

  Two point charges each have a value of 3.0 j hu g+le(.4xy3ehy h3C and are separated by a distance of 4.0 m. What is the electric fieeuyhy4(h3 eg3.x+hj l ld at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anddelo/ mqo;b -; a -4.0 mC charge is placed at the 50 cm mark. What is the electricmo;; /ed qbl-o field at the 30 cm mark?

  A 5.0-mC charge is placed tpm*,cy329 *dvewewy/m3 ;)yangxks at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark.nm ey yvp *;e)3d3y c*92m twgaw/xks, 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 and x = 0.20 m 4l 6r ozmjudtbd0*p02. What is the magnitude of the electric field at the point midway betwee*26dj4 zbmulr 0ot0p dn them?

  Three 3.0 mC charges are lmsz k;vu2/k80 c,0ft m7 yosiat the three corners of a square of side 0.50 m. The last corner is occupied by ofk8 csvz0s yk/m;tuim2l 0,7 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 74eyzhyw/*kpn b8t mizn27 z16c *kk mare placed at the corners of the square as fol/8 *ez m 4ykny7kp7 hw6k 1zbic2*tnzmlows: +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 i+xa;uhbm*;pd4z oo ,f -eb(kzs placed in a uniform electric field. What is the magnitud* (zuapfbo om+4h-x bez, dk;;e of this electric field?

  A particle with a chaz9 pmsw;lak g/)y*g b6rge of 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 placrf;4zx- y /lzjed in an electric field of 6000 N/C pointing downward. What chargzy/fr ;4z jl-xe 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. The ball is plgz; (poj;fkl2kd.-kp aced inside a uniform electric field, and is suspended against the f2 ; dok(pkl.kgf;-p jzorce of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ch1q pf*lhrf ,o sr,bl 2xlr(*s1q7j z3sarge of +2.0 mC. What is the magnitude of the electric field 5.0 cm ,orjs3r sq zl*fx(1p2r,*l q s1hb7lffrom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the 5,kl avgy+ c2kdem17 melectric fiel75 m2e,myklkvg a+cd1d 6.0 cm from the center of the sphere?