State the law of conseklv+0 fdsanvbz : 13wl,nk-wcs/3/fhrvation of electric charge.

  Is it possible for two negatrli v 6gtb,d* )1+ukypive charges to attract each other?

  Is it possible for a positive and a negative charge z5lwu lp hhd xznf5) 7,fnq;6-to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gl: sl 7wjor-9) fbfxnw1ass rod acquires a positive chfno9 - rw17 lf)wjb:sxarge and the silk

  A proton carries a

  The model of the atom k02b(gj7djuf3 ll.jgshows a

  A neutral atom always ha9e-uk1kkobk bqwgxp. 1 t53 r/s

  An atom has more electrons than 9uul;/)nk rdb protons. The atom is

  Materials in which the electrons are bound very b6o -8twyi+*bnhe+gy tightly to the nuclei are referred to asnb+*tbwhyy-og 8+ ie6

  Materials in which the electrons are bound very loosely to the nuclei8kzdrl(/ j3;e tt 6bih and can move about freely within ther (tb3ji lz8; de/k6ht material are referred to as

  A negatively charged rod is brought near o10*( gqm krml8gf,jbw ic:+js ne end of an uncharged metal bar. The end of the metal :1wgrq0 bjks,cjg l( *i+f8mm bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are( larn0n nsak*khnds.6.ln0 / placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groundes/an l..0h6knkd(* nnnls0a rd. Which statement is correct?

  How can a negatively charged rod charge an electroscope positive3wtut6)o r.vcgl :x 9ql:ni,lly?

  An originally neutral electroscope is briefly towd/ s d+ uuv6eg(z4/ziuched with a positively charged glass wiz/uu+zd 4(s/ edg6v rod. The electroscope

  An originally neutral electroscope is grounded briefly whil rk9a p78hw-zx(o.yhne a positively charged glass rod is held near it. After the glass rod is removed, the electrosw k(z ahh np-x8.y7r9ocope

  A positive object touches a neutral electroscopazd7 pwcf3 rbl9 :1zcksn85*d e, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. Wl 3dfb c1wn c9p8*szk5a:d7z rhat happens to the leaves?

  A large negatively charged obje16el 76uekqo 6a)c 3 /hsnswokct is 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 does no e6nace7kl6 us/ 13s6qw k)hoot 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 con ixyjc.,,/wq/zrlo, sstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la b-, 4:a*doogftc)5knvi tnj5rger in magn5t:gtf 5*jvb)i-o4 kac o,ndn itude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed k/jk2:wn /rnid) sq52uyx5kpnear each other on an insulated table. Which stateme/rd2wn :/nx si pk2uk ky5q5j)nt best describes the electrostatic force between them?

  Two charged objects attract each other with a certa,hq, e x ulkn8;2a1fty.3 oa*u3iwgzqin force. If the charges on both objects are doubled with no change in separation, thwkx3 ;t8q.au3g ,oz*ha yf2uil,qe 1ne force between them

  Two charges are separated by a distance d and exert mutual attracf,.fb8li4m q c mmgtz4( b.jz3tive forces of F on each other. If the charges are separated by a distance of d/3, what are the new 8mmz.flcz .3q, mti jb4f4(bgmutual forces?

  Two charged objects attrac.45a1e; w pcid);tik up 3zundt each other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, a.i5;kzw pun1t4a ud3dp; c)eind 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 separated by a distance of 1.0 m1 f/b hrlskwr0x ,4qm/. What happens to the magnitude of the force on the proton if a secon1kb0,fxwr hmls q/4r/ d electron is placed next to the first electron?

  An electron and a proton are separated by a distance obd/ ;-cg9zv/eb+ rbvg+p jpr -f 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is pld bbpgcg-;/pj+r9/verb+ -zv aced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hu/f-h9 umij* shodg/w8nfd6qp -(- ubappens to the size of the force on the proton if the electron is moved 0.50 m closer th-df6djh o-bwm/(u*ip8usu9n /f-g q o the proton?

  A point charge of +Q is placed at the center of a square. Whejf 9,g7y*wlw zi0 (ghen 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 thh(0*zywf e,wgg9li 7je 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 the centroid of an equ fx13hhr 3aq9t..r ojlilateral 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 it. What is the magnitude of the force jxfaq19. hrhr33olt. 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 not a vectorlbqem::n p+-p b3 lqu*?

  At twice the distance from a poindvb(qyx qg -y wqdi;f,: (;;wvt charge, the strength of the electric field

  Is it possible to have a zero electric field val:)7tl s vco8ouqc,3v g7lf2diue between a negative and positive charge along the line jo3g8 dl2 cu,7ql fiso):vc7vtoining the two charges?

  Is it possible to have a zero electric field value between two positive chargeo uh9-xbim*;+ inol3gs along the linebhi9o3ml in-;u *xo g+ joining the two charges?

  Electric field lines near psitive point ct9+yce clso,:a.; l trf g3j3eharges

  The electric field sq(rxfgcvj7n (6 4;dj shown

  Can electric field lines interm/unvsjxdk d;) :9ml+fhxz*9u4eal /sect in free space?

  A solid block of metal in electrostatic equilibrium is o)6 lvct nehj-6ucw*0placed in a uniform electric field. Give a statement concerning the * oeclunchj6-w0) 6tvelectric field in the block's interior.

  If a solid metal sphere 7yvxy*/ i1 /sq43khltw u/iuvand a hollow metal sphere of equal diameters are each give i7vyi*/uv kw1tyh xs3l u/4/qn the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumi q7x lg2j vx8mjy07qmn .9tn+knum rests on a wooden table in a region where a uniform electric field is direc7tx jl0+x.qqg9jy k2 mn8m v7nted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elecxu-bpve3le /9+x tf r7r (xyw,trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ground4 4bp 2ure(i5 wxrlm/zed. As compared to the case without the hollow sphere, the electric field at a pointem 5lxwu4bri4 p z/r(2 directly above the hollow sphere has

State three properties of conductors in st vhjeax 986k;datic equilibrium.

State Gauss's law.

  The charge carried by one electrook j;t 40 ykda/pyu -9i-m-:es 8ldovcn 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 y0k) )p1qcdlb +2.00 mC. How many more protons than electron kldqyp1)b0)cs does this piece of plastic have?

  What is the charge on 1 kg of protonsxvy qgj g+)q4e*liu:( ?

  An atomic nucleus has a charge of wa2 1o;jdzl58jj jyk)$+40e$. 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 and -4.0 mC, wai.hos(c 06h1 ows 0 cwrjc( wng3u*;respectively. What is the magnitudw0swjcor1u.hw* 6 ng cwoh;s ( 0cia3(e of the electric force between them?

  A 1.0-C charge is 15 m frzk0gw 76sla9 9jryqlub:2al1 om a second charge, and the force between them is 1.0 N. What is the magnitude of the r2g9ub:y s1z 9 j0qk7aalw6llsecond charge?

  Two 1.0-C charges have a force by l)7y1d:cq,ey- ra3cw(sia+tj rf7x etween them of 1.0 N. How far apart are they?

  The force between a a4bzp,ok + y;u$30 \; mC$ 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 force. If 8 nb;mjystc4a5 / mb*jthey are moved to a new nj5 b*j;48smambyt /cseparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC xcv ;,+fdf+p4l*d ynhare placed on the x-axis. The first charge is at the origin+l4hdv d,px *;fc nfy+, the second 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 chyk( tzs6n10xea)hi4nhj 8h0b arge 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 an)t 4nz0 61jea(syh8 hxihn b0kd direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at xjvx ajy3t ni4 b+t+-9h = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = +4tajhinbty9j-+ 3v x-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 squaefko5qq..441zf s wf.r6yt pvre, 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 q.o f..vf4z61 pr4wktfeq5 syat 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);f;: psn pkxd9f/t6xo2e me/5r Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What/;t /5e9k 2fpr psoxxfdnm6e: is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, w+t. (r1ys)qsml/dsy0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the wy.)/mds rts1l (sq +ynet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC :0 ***h1ri alpy(q abc nq8fakare placed at the vertices of an equilateral triangle which measures 30 cm on *r0(i*1qacnaklqf:p8* by a ha side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and ga3hul :)e8 t5tjju,r+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 chathl 5j )tj: rue,gu8a3rge 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 gztjs-3xy f0).0 m. Where on the x-axis can a third charge be placed so the net fors 0x3)-zjgt fyce on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. wpoovcdr(c1f 4 eu879Where can a third popf81 (r94odvc7u eocwsitive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o4 64xknkdg66kt u(qkcf $4.0 \times 10^{12} \; electrons$ 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 attractiou q; waojm42l(ze4ga*n of a fixed proton some distance above ituqo4z l42w;*j m ea(ag. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduclyhaeo :0mwhowoni 63b3 0 .p/ting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apar3 elh o/ bhop3.0n0:w6wmyi aot until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a th -,exz)r8:og0evjw +wr8p noz /m7 ncharge of +40e. What is the magnitude of the electric field at a d,:hnm+t78 o)pjo8 xezne-zrw /0v rwgistance of 1.0 m from the nucleus?

  What are the magnitude and direction of the1rx v1r*hg pwai,tclka/ 42-m electric field at a distance of 1.50 m from xmwa rv2la cr*ik 1-/hp4g,t1a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge.y q fmcduv5 c9o;0hbxe5d.n-- What is the magnitude of the electric field at d9nq 05uh;v fcy .-do-xmc5ebthe location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction opz 1x 5;vvlc-mm :rh8h9kb( u3v m4cbtf the e9z4m b;c t8:mb5 ph u3r-x(vl1kmvhvclectric field?

  A 5.0-C charge is 10 m from a small test charge. Whapbwp 1iqs5+0y( *m qkcav2gvh9z;h ,kt is the magnitude of the force experienced by a 1.0 nC charge placed at the locatio pshywk9q52,0pq i abz cvhk*(vg; +1mn of the test charge?

  Two point charges each haa91hs3p kd e/mve a value of 3.0 C and are separated by a distance of 4.0 m. What is the electsk9e /h3mp1 adric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m0si ez0lk3av .( evi7ykdp q)25asxm7ark of a meter stick and a -4.0 mC charge is placed at7my7 qav3siiv)xa . kldp0kes5e(0z2 the 50 cm mark. What is the electric field 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 ch8mt yy z1 bk*wbp 3lf,cot;3)warge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field p 8w,*bty;)l b1t 3wm3zycof kzero?

  Two point charges of +3.0 mC and -7.0 mC are placed at gxj(jnj)6lo( x = 0 and x = 0.20 m. What is the magnitude of th)jjo jgnl(( 6xe electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of tz+kg mbi l,z;tg1/r3a square of side 0.50 m. The lt +ikmt/rlz,3; z g1bgast 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 arny g dm g s.5do.ekrmg688ycb7j va:,.e 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); 8ab87sydn,romgv . 6dec.kgmy5j : g. -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 is placeb 3e;9mwuf *snfsi22s d in a uniform electric field.m3b*fs2 s ei9sf;nwu2 What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass (h aojj pn*4eo+ b1a ii bu9o)kg*9de0of $5.0 \times 10^{-3} \; kg$. 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/C1y hs7lq(4)b)alv z hy pointing downway4 )l a 1y7(bshlzhv)qrd. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g car (m5d)ynohr)(6scvsda d ch, -ries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and,dcvh(s )ncy5da (-)m6drosh is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is th gi2fe60:: qt;ibyqxwe magnitude of the electric field 5.0 cm fro x:2b0qy e6iqft;:i wgm the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrik1wx id)j qse .k)apn: e)o3.0edn ;ihc fie1 ; h oskjde:.niqx0.3e)ade) ni)wpkld 6.0 cm from the center of the sphere?