State the law of conservation of electric c6 z v,+9hdli(gq)d tgmharge.

  Is it possible for two negative camysj wm69 4x+harges to attract each other?

  Is it possible for a positive and a negative charge to attract each o2.bbxzc:y 1hither?

  A glass rod is rubbed with a piece of sih *ia) hs g.:n+,hjonilk. During the process the glass rod acquires a positive charge andg:.h, )jihs*+inn oha the silk

  A proton carries a

  The model of the atom sizv8wzfjuazknn3m33,jy.)0u-d z) khows a

  A neutral atom always hak9gzc5 6pk+ bes

  An atom has more electrons than protons. The g 74 yjo4anjcl65, utqatom is

  Materials in which the electrons are bound verralaz1kgc(6h81r8 e ly tightly to the nuclei are referred to a681 lhgk r1alae(crz8 s

  Materials in which tx:(h7o k kfl))4i d 6ifembef5he electrons are bound very loosely to the nuclei and can move about fref 5do4:hl bkxie)(km67)ffie ely within the material are referred to as

  A negatively charged rod is brsf4ta tra8+m 6v: 5e07 yasssbought near one end of an uncharged metal bar. The end of the metal bar eyas0:5sasmb+7t6aft 4 rsv8 farthest from the charged rod will be charged

  Sphere A carries a n8r jk 4uf:kle8et positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that i :ru4ek8l8fjk s grounded. Which statement is correct?

  How can a negatively chargay0(bof b8)tt50mrl 2cpfb 3t ed rod charge an electroscope positively?

  An originally neutral electroscope is bcxhb8t t33 ,8kzuvix5 riefly touched with a positively charged glass rod. Thec8 3,vh3zkt85xxut bi electroscope

  An originally neutral elect4a0f6z*r ldko8 ;nwsktjpl23 roscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the e pdn s6ja4*8 wlk03t2orl;z fklectroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thebfzr ,0(bw 3tan a neg0b f3arwt(bz ,ative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insuw6 qsm9 d8l(n*t/xmzklated table. A neutral metallic ball rolls straight toward the object, but stops befol6 m 8m tx9z(*d/ksnqwre 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 Coulomb constanjidv tt4i**1g t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance ycaekg k:xul +.i x(d(;.qb uhk,6o,x d. The first charge is larger in magnitude than the second char,:i,exkydu(u.hq+ ocxk(xg.; l6b k age.

  Sphere A carries a net chauu*u1sz9yz29jhj(nxve q j .+rge and sphere B is neutral. They are placed near each other on an inx(jueqn z9v. j 9 12yuuz*hjs+sulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attgy h)py/g e.fpb,a2-qract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwy,p - q ygafh/p)g.2beeen them

  Two charges are separated by a distance d and exert mutual :4 fsy6 yjrpwm/nia:/owz9j+attractive forces of F on each other. If the charges are separated by a distance+w/m/nofa:srj6 wi:j 94py yz of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wha psxz 58yp1iin, t;u3kg2 ,osl:tvlev9 6jw;e t happens to the force between them if one charge is doubled, the othe zipsvlnp1689 t,k5xeew;tsv,: ;il3ugoj 2 y r 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 aremdoqm8 mm;23wgh)vn3* /l fim separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first elecnlmq 3 /g*)mfd3v ohwi2m8; mmtron?

  An electron and a proton are separated by a distance of 1.0 .b xn. b k7z8p;ljxq32 w d07hm(dzhcfm. What happens to the magnitude of the fo 3 .qfj70;hz dk2zxw7.x pnl8bdb chm(rce 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 1.0 m. What,brhhc/gg+a6o3 po 7: /hlnrxf- dar; happens to the size of the force on the proton if the electron is mnrd+bohorg3x 7;l 6fg/:,-praa / hchoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poi0a 0i f p-(sz 6+fb8jz)s*mtepgsf3 xrnt 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 posig0sz3(jr-smf ) pf*+s xa8pzt fi b60etive charge at the center of the square?

  A point charge of +Q is placed at the centrdennx- 41f oxd1(n pj7oid of an equilateral triangle. When a second charge of +Q is 1-dfxd7(1p4nex jn n oplaced 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 is no gs-a6*d :agccxwjyz33+jmk- t a vector?

  At twice the distance from a point charge, the strength of the , b ro kxfw81uck;tf3(cb 33lfelectric field

  Is it possible to have a zer4ym0 cdhl 3kudh0)v *bo electric field value between a negative and positive charge along the line joiny4 0d*0k3bu hhcmvdl)ing the two charges?

  Is it possible to have a zero electric field value between t uy75t4 corcz2wo positive charges along the line j2oc z5cu7 ry4toining the two charges?

  Electric field lines near psitive point qca gj*()jnr,- 4z:p*nr 7zypzdbye; charges

  The electric field sh-j9qiu pb 0ejc yn,:j4own

  Can electric field lines intersect in free spac:y xcq6 bhny4)e?

  A solid block of metal in electrosta)c8lq q7ni 9-7x( pzdykc3ckptic equilibrium is placed in a uniform electric field. Give a statement concerning the electric f8ccz qp-y9n p7k7ilc xd(3 q)kield in the block's interior.

  If a solid metal sphere and a hollow metal sphad1h ;jeqy 1hx) mk*v1ere of equal diameters are each given the same charge, the electric fiel)h* yqm 1;v1 jdkeahx1d (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wher-dp-b6tnb19h9q z; j fe(v nuve a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfacee1(f-6h9z jut vnb-ndp;qv9 b?

  If a conductor is in electrostatic equilibrium near an elec lm40 s)yah5mktric charge

  A positive point charge is enclosed6 9,al2lyoz. c6yjvtz in a hollow metallic sphere that is grounded. As compared to the case y6a j.zlz 2oy 9lv,6tcwithout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriumgrw+eg0i0. r k.

State Gauss's law.

  The charge carried by one elecz ui)x0 x m*/8fj/ybeko7ub4jsae z-6tron 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 more protons than elevd (hh +rgk-zm5:fd2u ctrons does this piece of plastic hadhh2 (-mgu vd:fkr5+zve?

  What is the charge onouts k 1 k/iur 5j4:t(0ijm;on 1 kg of protons?

  An atomic nucleus has a charge of8os/; rew ixzs)2qe * /qvgzich9;a7k $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1 ybnnhec),t1,j. tl.q.5 cm, have charge values of 2.0 and -4.0 mC, respecti.nl,nc,qjth 1y. etb )vely. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg 4mv ,yl2s *ima0)crgcw0r* kye, and the force between them is 1.0 N. What is the magnitude of the k0v 4w ,m ic2 ycrm*)r*ga0lyssecond charge?

  Two 1.0-C charges have a force between them tk( p.xmb+j0r *g(mx rof 1.0 N. How far apart are they?

  The force between a +ocrls, +(am b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2me1+dx z,* r gtf((mqc.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric for(c+t(,m1rm zeg *qxfdce between them?

  Three identical point charges of 2.0 mC are placed c-)* k xvt*6 svri 6snx6tas,m0n+0xkwev8d ron 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 di 8 6e vsn)k*t mxrt0xa0rx -+scd6nkiwv*vs6 ,rection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placj/lp.u8w mff)8w(ut ned 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 the magnitude and directmfw8lf8u)nj p /wt (.uion of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the folwl25imdn 0k 6vlowing positions: 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 force on the 3.00-mC c 6d2nikm0wl v5harge?

  A point charge of +Q i7e gw;t hbmo*r,-n zk7o ah9y-s placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed thatnho;bzyhe9mkgwo ,*7-rt - a7 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 charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q20bdrfqk l90* n p2fw*o = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnr 9kob0ql2*wdf*pf 0nitude 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 a9s7ox/va 8l g0wi *jnis at (0, 0). What is the direction of the net force on the 5.0 nC c wxas7o j v0n*/9liga8harge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatera.gr i(kq+vdd xhh*,r +y(dz2al triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acvrk.+qz* x r+,gh(ia d (2yddhts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated bygcp(-k xsu f3im(lrobu7 670v 3.0 m. At what point, on a oi-r 67v(kc sg0p 7xf u3(mbluline between the two charges, would it be possible 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 = 4.0xq9d l5p3;uhnqn yl0j8pph* 1 m. Where on the x-axis can a third charge be placed so j9n8lquh l1* h0 pqpyd5n;3pxthe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cau2(, g oyn,tbpn a third positive charge +q be placed so that the for ygon2(,,tu bpce on it is zero?

  A copper penny has a 1 . kbj+cbijfmv* ;e5fr8ztf .mass 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 of gravity by the attraction obevf xa6:is 05ern, d.f a fixed proton some distance above it. How far abn5idvfee,sra0b .x :6ove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncot7he)- jkjdbg , 5lzcxq3d5b-nducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the threa3 gx -djdj ct75- z5lq,kbbeh)ds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge ofjtbcj2 pn3o2pa u746 y +40e. What is the magnitude of the electric fie jty4pj3c2p 2bun6ao 7ld at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction ofneyd3:.x-on6 a+fb n0lab1 qp the electric field at a distance of 1.50 m fr.fep-:+ oqnad3aylb6n0n bx1om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a sm 4ge m1xu*m*z+ tgili3all test charge. What is the magnitude of the electric field at the location of the test 1*iem3m* g+z glixut4 charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direcvc(mzz8d4yv, -ixk7tqw 6c8 gh.t2 yvtion of the electric fieldtk.zg2 68z -vhctv(4 y8x cmqw 7di,yv?

  A 5.0-C charge is 10 m fromu hu-7amagj55 a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locat ugm-5h75a ajuion of the test charge?

  Two point charges each have a value of 3.0 C and lsgnjbc2 t :33are separated by a distance of 4.0 m. What is the electric field at a po 3b2cts:ngj l3int midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and lxjl8a ;,j.obg ;tfx)a -4.0 mC charge is placed at the 50 cm mark. What is the electric fieljl,f) g8 xoaj;x; b.ltd at 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 charktj cvu o +g8z*i 4v4kf9g;/fige is placed at the 50 cm mark. At what point on a lij*i9ko8 ;ifg /44+ukzt vfcgvne joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.03fw u3i,az+ fw mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poinfi az 3wfw+u3,t midway between them?

  Three 3.0 mC charges are at the three cop*nao(l3 n .bwbjp+ +wrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field a ow pl.++bp3*njawnb( t the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the co5br,l)tpjpb1z kb8 2pe +q8d grners 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 gr 85)zpqb+e,bbktl2 dpp 8j1 electric field at the square's center?

  A force of 10 N acts on a charge of w/l;eagw2uf yb5 k/:y5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fkyf/2g:wuweb yla/5; ield?

  A particle with a charge of 4.0 m vrm)ixv:4a 5uC 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 placeds p /b l 9*d0j(29wiemai8*gafhe x.xh in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to9mjp i*.h le9di afs/xw e2gha8 0xb(* be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The b *)ri zb+wmv04soae/ kall is placed inside a uniform electric field, and is suspes/*k 0w aovezb4)i r+mnded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chargauzp.6mt.k* o i21b zz,nl+phe of +2.0 mC. What is the magnitude of the electric field+ml.zikh6 n2p1zu oa p,b*.zt 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 3uq) p :ybe x+fdjhp;lc5ikdp)(8dl. cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of thee.k8xpphu l +(jy ;)d idqc :l53fpbd) sphere?