State the law of conservation of electric chjqpymefmq;a/r /9+.c tj (r.warge.

  Is it possible for two negative charges to attract each othe t-og4s4hooithpd0 4 kp(+xnsp2*;s jr?

  Is it possible for a positi )7+p nlrv7er9aan:five and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duf45(q vojh 2mzswnj4pge /97iring the process the glass rod acquires a positive charge and thi5 fp w(q4jne94mh2s /j7gvzo e silk

  A proton carries a

  The model of the atom showez-n8;ba+v ic (+lcis . in0yes a

  A neutral atom always has0h3udmdp93 g8 kg*txb

  An atom has more electrons than protons. The at (g, hohx-w4ieom is

  Materials in which the electrons are bound vercm ,xkz3g2k .1d;yzj hfar( j(y tightly to the nuclei are referred 2xhf(1jmr(;zz,c.ay dgk 3 kj to as

  Materials in which the electrons are bound very lg5q oj*d-qsb6oosely to the nuclei and can move about fj5-qs6b*qd g oreely within the material are referred to as

  A negatively charged rod is brought near one e3 hhnafjz 8 5 op;vh/kj(te* ibg25yt+nd of an uncharged metal bar. The end of the metal bar farthest frompkevh jn yth5*g+h 8f5(32jto;ba i /z the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They f6hi e2r(zb b88ke8wzz -j4cuare placed near each other on an insulated table. Sphe8 e 6zwrzb(8zefjkuh4 28 bci-re B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elf-uur g7cv;l;i5 f sy2ectroscope positively?

  An originally neutral electroscope is briefly touc;nfa0)( iwd4 k- bc2x, lehwbnhed with a positively charged glass rod. Tf4nwk -bb( nw hladx0),2c ei;he electroscope

  An originally neutral electroscope is grounded briefly while a po:opba ax tq*w,n)r s)kk0cxv/ sm5 ,0csitively charged glass rod is held near it. After the glass rod ika n,cc)0o p,)rxssx*b5/kvwqtma: 0 s removed, the electroscope

  A positive object touches a neutral electroscope, ands;nykrs;z:9 a42naqa the leaves separate. Then a negative object is brought near the electroscope, but does not t 2;;n qyaaa9:s rsz4knouch it. What happens to the leaves?

  A large negatively charged object is plw4 qpg2l w9+lzd/( (p fpvu:asaced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic/+us azfp(lvp :p2(qlg d49 ww 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 ore7c 2r-rv:v m2l eu zy1hq*l.f the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is la o5cbkzex n, i1bf295cd,hrg:rger in mag9xnhz,o,brei52:b gc c5k fd1nitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plavd5c 4cdqf/ k6ced near each other on an insulated table. Which statement best qvdfc6d c/k54describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargejlaw veb aw;ar0j 22l0dtgl m+b8213zs on both objects are doubled with no change in separation, th0t a2zgjv b0a32r l+ wldb;1wj8le2mae force between them

  Two charges are separated by a distance d and exert mutual attrac- po05jp u7 kien1f c16tu7yzhtive forces of F on ep6 cj tkn7hi-uy110upeo7z5fach other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. kyb 5hh7r4 y2cWhat happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their crhh4 y ykb752centers 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 r otfv(c8t;x2go44 ge f -abg61.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first ebxor6 a8gft2ge -; v4cgf( 4otlectron?

  An electron and a proton are separated by a distance of 1.0 m. What hm r/x0flr.4y*bu;.c rl whz- vappens to the magnitude of the force on the first electr4 brfm0wh* .xcr.; l-/ luyzrvon if a second electron is placed next to the proton?

  An electron and a proton are separated by a di )bhq dn cf2m35:j*r7ltwni efwe2(n, stance of 1.0 m. What happens to the size of the force on the proton if the electrtb w *, 2h:(7erwf35l2nnq)dj menci fon is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poi x a9ssk7ul8 wwf-8q3lnt charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force ofuskws qafw7lx -89l8 3 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 charge at the center of the square?

  A point charge of +Q is placed at the centroidmjj8wr3 .em*r+ bwv9e 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 it. What is the magnitude of the force that acts on the ce.vjm+3wbme*rer8j 9w nter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vector)b uw9y v8bcm8?

  At twice the distance from a prn2 t0x;bg6dy oint charge, the strength of the electric field

  Is it possible to have a zero electric field valz l+ii9mi1a7d.oj tis 9*skr+ue between a negative and positive charge along the line joinind*ki9iizas9m+ls r7i1t+j. og the two charges?

  Is it possible to have -,nsibf qrcvf;*-kjo:jv 9,2bwrl4wa zero electric field value between two positive charges along q9vk,;2*4bco -vjf i,n: wf- rwlb sjrthe line joining the two charges?

  Electric field lines near psitive poifo; lx a2682z gfb22cddrqit /nt charges

  The electric field showh8ha x re ev:)9o)mvn.n

  Can electric field lin.hl ncyff h05(z-)zo h:0o ztjes intersect in free space?

  A solid block of metal in electrostatic eq* o) uf yrk91,qp6ejo( ttld+builibrium is placed in a uniform electric field. Give a statement concerning the elet*6 j,f+1 t)9l(yep odquokbrctric field in the block's interior.

  If a solid metal sphere and a hollow m7y kk bdi8b3 ;kmba6,vetal sphere of equal diameters are each given the same charge, the elebi6mvbda8b7,k y 3k k;ctric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where atb5l3m 3rdfarpkg6 fc y)nk mii+5(1 6 uniform electric field is directed straight upward. What can be said concerning the charge on the block's top su)i3f m1f dnalpkmtigy ckr 56+53 (6brrface?

  If a conductor is in electrostatic equilibrium near aq1papi6gn u 3l*3ejs mo;gtvl*ab.: +n electric charge

  A positive point charge is enclosel -si(i+kmgv5d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the h5i(gkm iv +l-sollow sphere has

State three properties of colg 0.lg e:;cwynductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is l6m-6q gnze/dh tbdg pa6k2 x9z/, b1t$e = -1.6 \times 10^{-19} \; C$. 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 1tbo;ryt );bx more protons than electrons does this piece of plast1tx) ;rotbby;ic have?

  What is the charge on 1 kg of prob,8y:ahk ln.bla v,) : v:svedtons?

  An atomic nucleus has a chg2 v u25u.kg)du j.sqharge 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 valuey 8q)xz cvye,koaz/r9 8y3se1 s of 2.0 and -4.0 mC, respectively. What is the magnit/kc e y1y )zvx9,aoye3sz rq88ude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between t*5 z7f jx ( ..:os6uxf0gnkpa*xgtpeuhem is 1.0 N. What is the magnitude of xxoxj 5e( *u6g zs0a7ufp..fkntg: p* the second charge?

  Two 1.0-C charges have a forc ;vdiv 9dp7r3le between them of 1.0 N. How far apart are they?

  The force between a tiu1d*. b+x jr;vxke6jikk(+$30 \; mC$ 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 theyu2yv8l b2 8ygb are moved to a new separation of 8.0 cm, what is the eul2 gy8by28vb lectric force between them?

  Three identical point chad kqz1o s),cx.k -c:jurges of 2.0 mC are placed 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 direction of the electrostatic force which acts oocdq)s:zx ku.kc 1j,-n the charge at the origin?

  Three point charges are placed on the x-axis. qw4(8otx; y fgA 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 force which acts on the chawfg;xq 4t(o8y rge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x r: g:tj9ob).q 4xel))q qr pd8bjaym+ = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mjear tq)::)r98 yq+.d4g xjm)qoblbpC 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 ce,pg+a7)iz: 7p m1r8fjcod7vs6nnm awnter of a square, and a second point charge of pn8c17i,nzm 6wmaga:dj7 +f v)7ospr-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 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 ;y *rttv5l3 5a5rgpci nC is at (0, 0). What is the magnitude of the n35 rg*pc;l55tra yvit et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 mxxse7s, qzq(xr3c s 89, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?x 3e7rxsq q(x ,c98zss

  Three identical charges of 3.0 mC are placed at the vertices of p mld:7h48ubcan equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the8dm:b4 lhpc u7 charges?

  Consider point charges of +Q andyle s b//sb) o9xs9c.xtdzyssb4*c : . +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 charge of -Q such that the electros s/cyx9:e4s/9 s.b* dbt.xoszcbl)y static force acting on it would be zero?

  A +3.0-C charge is at the origin and alja9 ;nbdbj8e7l9ia ( +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is8l ;j(7bjb9nadeali 9 zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. W)b7ei 4qdbh9m here can a third positive charge +q be placed so thatq dhibm7 4e)b9 the force on it is zero?

  A copper penny has a mass of 3.0 g. A 4bismhk+(kq,q6 tm qzi )hy64total 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 a( cg2t l83u ujeij-,wkgainst the force of gravity by the attraction of a fixed proton some distance au,k iw jg2e(l3 -ujct8bove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point8a9 6 pq cuntdh-e/pl0 by nonconducting threads which are 30 cm long. Both ac 0p/ltn9 e8 u6hp-qdare 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. obe0r .( 3vzi8 tdohy7m9dr1f What is the magnitude of the electric fielo.8thmy1 9 f ez(30vrid7d robd at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elec arxaeh;e, p,r/ 7.dgdtric field at a distance of 1.50 m fr, ge;de.7drapr a/hx,om a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the vcr)d9lfd6e pf x zi s28b/*6telectric fislxi9bzfrd) cpv2 e* f668/tdeld at the location of the test charge?

  A 5.0-C charge is 10 m from a smallp/fr( f bum+)d test charge. What is the direction of the electric fi/)(purff+bd m eld?

  A 5.0-C charge is 10 m from a small test charge. What is the ma7dsza:a 5jfk n( hat7*gnitude of the force experienced by a 1.0 nC charge placed at the location otk:f75(7ajadza nh *sf the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance of ,n now2va71zbc54q ye4.0 oanq z4nyc251 v7ew,bm. What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a)-aeh c4 0qq-wi:tnog -4.0 mC charge is placed atiwoq0g -e4 tcna):h-q the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed ate 1it8c0lq 10qnmee 1n tjz:)t the 0 cm mark of a meter stick and a -4.0 mC charge is placed at 11nq1tel eemq8tnc)jt:0 0i zthe 50 cm mark. 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 xc7:d /g0ivqqms2 l;h placed at x = 0 and x = 0.20 m. What is the magnmxg;2 sqhv q/ci0l7: ditude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the tfv*.3t 29qr 7tsfu aeihree 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 2frs*q3vti7e .9ufa tthe center of the square.

  Consider a square which is 1.0 ;3di*h o+eyfcm on a side. Charges are 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 field at the square's hid + y;3*ocefcenter?

  A force of 10 N acts on a charge of 5.0 .dxszgag6f/ kkqww0 27*s6,yf 5 sruzmC when it is placed in a uniform electric f.fgxd6wzsa2 f6 zs g,yu/w5 skq7*0kr ield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasm1i96f( qu:y 4*dvxe:uugj ob 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 placed in an electric fi xzppvmi()z-a m6ws1qt913-k y f mae2eld of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspendedw tf zkm-qva- zx p)11sp 6ymi(a9me32?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ban -:-f,n nsatzll is placed inside a uniform electric field, and is suspended against the force of gravity. What are ,an-n: f-tnsz the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the mabrwr r.(:a bwu, ;ohe:gnitude of the electric field 5.0 cm fromo w r ru;bbrwa:he,(.: the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What6 /c .xmotbp:fgye(j3 is the electric field 6 :yogc3/m fp.(etb6j x.0 cm from the center of the sphere?