State the law of conservgypl o7+9jcc o mkmp2-j-08mp ation of electric charge.

  Is it possible for two negatp tl 0v0- odaq*c6n:wtive charges to attract each other?

  Is it possible for a positive ayfach,) 3 qk);s3 /nawm .s+ot- bqkgund a negative charge to attract each other?

  A glass rod is rubbed with a pie+phkr:i+ ortay d(r0oh 9r :p6ce of silk. During the process the glass rod acquires a positive charyh(+ 6kor 0o:rridr: pa t+p9hge and the silk

  A proton carries a

  The model of the atom d87 elwxwubcn(954l9x m tcq ;shows a

  A neutral atom alwaysko-yfq;umrv ;kz lbp12sz+nj4ff yi53 r;4. c has

  An atom has more elec1nlsx/6hq-dlk 4 o ee2trons than protons. The atom is

  Materials in which the electrons are bound very tightly to theko +yzveh(r/. nuclei are referrer/o(z+eyh.k vd to as

  Materials in which the electrons are bound very loosely to the nuc-z d k8-3rbx4 uiew(kalei and can move about freely within the material are referred to(ki w-uz-bx 84 3ardke as

  A negatively charged rod is brought near one end of an a2 2hdnb;kpc hn,eu n .l8;o/ov- qcv8uncharged metal bar. The en 8n2v ,bc; po hao2nc-le.h8/vukn;q dd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positiv .:d(yuparue c+6ro/kpq2mpgb-( qu0 e charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly tou 2pqoq-+uma dy6(keprb cug( /0 .p:ruched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscddxpp: 4 lp)8i+j xeq +yd2ne-ope positively?

  An originally neutral electroscope is briefly touched withy;zs,*z o)u kx a positively charged gluokz;)zs y *,xass rod. The electroscope

  An originally neutral electroscope is groundqrbhev28k7 n uw7hq8vp((w w6ed briefly while a positively charged glass rod is held near itk( hq8 8v( p7w6beh7wqw2nr uv. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and6nael si..ek oq4/h rucr75j1 the leaves separate. Then a negative object is broughtjl .no. u 7akis51r64/q heerc near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inaj,o4/8hnrwm sulated 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 notmra nj/8o ,w4h 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 q,3yb,k9dmqc0w6 *6fxu px fa Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distancea;xmo,caz g;z04d xyp52; ey) bkujo st,r/j3 d. The first charge is larger in magnityym)/p b ;zorjkdc205 ze3 ;,ajs;axx4g,tuo ude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arpkahw3jmz:zy 2 nl.;0v, 46yr nwc -jre placed near each other on an insulated table. Which statement best descy, vhmknc-n:3 jz4yjlr z0 6pa2;w.rwribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chapue142r q rd8urges on bore2u 1druq48p th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fxhu +c1q*dp hnqny56 6orces of F on each other. If thpq 6chndn+x uq*y5h 16e charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a foijhf3xn:8ae*g2l vn, j mr:n2rce F. What happens to the force between t8ng2r,xmnne 2fvl:: hj*i3ajhem if one charge is doubled, the other 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 are separated by a distance of 1.0 m. qeicw1 e,1w/t f7k7ri What happens to th1r7 1wfekq iciwet 7,/e magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens tocp0o.vyr+o(rkjc- tq ;af++g 6+ fgvy the ma6yg+jy0+k -qoo+r+fgac.fv r tpv( ; cgnitude of the force 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 or)s2 rw89vel3js3r. ozzp,o happens to the size of the force on the proton if the ,2 ez3v9r)sr8j .zopolr3w os electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center pz i0 )f*3p) 30,nqojnkow7txnnqy8 q of a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an electrostatic fowt qpxjzp83qfo07)*)q0ynni n, kn3 orce 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 charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilatg 6jx 4;d:-dntxupnj-eral triangle. When a second charge of +Q is placed at one of the tr 4nd:6u -dxxtjjn ;-pgiangle'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 not a vaf:cjj38lsq w;yb- q:3- ecms ector?

  At twice the distance from a point charge, the strength of the qtj0m9f y/c hde ;q+5selectric field

  Is it possible to have a zero electrin53tnq) q2tf4zp.3z/e cdtfzc field value between a negative and positive charge along the line join d) qncze3z4t 5fz/t2.pt3fqning the two charges?

  Is it possible to have a oip3,ccomupjyf )do + y+86 ;kzero electric field value between two positive charges along the line joining the two ypo 3), +d uc;yo6pfoik+8jcm charges?

  Electric field lines nea odhefhul6 (wyq .42z5r psitive point charges

  The electric field show ssycmc- bt2+1n

  Can electric field lines intersect in frxd.i;ifhsc(5i0 qnv(ee space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform 62 esf( 9w 4vx5vwtcpyelectric fie 9vp2et5 v(6xsfcw w4yld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow meif 8eq0w bn9w,/-a csntal sphere of equal diameters are each given th0wfni9, qa -w cnes8/be same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alum(zvg v,fve;k29p tp9z inum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge oz2tp f9e 9zp vvg(,vk;n the block's top surface?

  If a conductor is in electrostatic equilibrium ne1wti (ddkcf3hc:hk; x6zg1urr1;wp,ar an electric charge

  A positive point chargq r/k9p/oaf x3e is enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elep3/ o9x r/fkaqctric field at a point directly above the hollow sphere has

State three properties of condu2a( j8rvtv6qhutk,9 /xk ab e0qb /i)ectors in static equilibrium.

State Gauss's law.

  The charge carried by one el6gv 7h k 41-tyr8xzfquectron 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 m9:j-+k 37nwnwa bdahq/o3 po9u he 6pbjy-w) than electrons does this piece owjhoy9k o+q nh6pumw e3: ab-3dn-pa9w 7 )/bjf plastic have?

  What is the charge on 1 kg of protoyq p *24xr4ealt ch+m4ns?

  An atomic nucleus has a 4iw8ryrxmn1z3 /sun6charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, sepaeb,h5/jkz 9ik fk0mhy oz)g9 ;rated by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force k5 z/ibo,ehjk9f )kzyh90g ;m between them?

  A 1.0-C charge is 15 m from a seconr)tfqh b )8. 57kbw0 tnrohwnp)*ary/d charge, and the force between them is 1.0 N. 50*)hkrhw 7)bbtnyr8pntfw)./r oq aWhat is the magnitude of the second charge?

  Two 1.0-C charges haup4stht+- ga+ ve a force between them of 1.0 N. How far apart are they?

  The force between a 36o 89rek lfnninqf 2($30 \; mC$ 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 they xowyww :qh ,;/oql+ n8are moved to oqqo/:ynw h;wl,x8 w+ a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are l+ zmdp(3k 5zyplaced 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 cmz3l+5(mpyk zd 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. b*q*ij 9h2v;d kss l1 bn8;nssA 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 tdql;sb8ks js*91 b;v2 shn *inhe charge at the origin?

  Three point charges are located at the following positions:: 3o smjrm8t7g 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:ts3 r8mgom 7j.00-mC charge?

  A point charge of +Q is plc onsm/mjy18t97 o1ofenw 5)caced 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 posit 1mocotmwo51y7n98n/ef jsc )ive 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 nC isk9kquvi.9w r2 at (0, 0). What is the magnitude of the net force on the 5.0 nC char2.q 9i kvkwr9uge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is z0-te-9f,nn3 cj tyfa 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 chc- ntynjaf,e t-3z9 f0arge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatw.wvuhk:zw(cm rha ; oo: l188eral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?(cr 8az ;1.lu:8hhwwo kvow:m

  Consider point charges of +Q anj - 90)6ef mhw,z)tcnbg3pqlvd +4Q, which are separated by 3.0 m. At what point, on a line betwe )wbm zpfhlt)6g, jnve-3c09q en 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 = 4.0 m. Where onx+ 2u,zqahjl4k gg 1+g.)h u1vnp gca5 the x-axis can a third chark.1x5)+njgcv p1,al4 ugh+z ah2gugqge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge 25t gan2 u1m4xsgz(k y-q is placed at x = 2a. Where can a third positive charge +q be plaga2y(5m zxu4kn 2t1s gced so that the force on it is zero?

  A copper penny has a mass of 3.0h,0 8ta,ew,bz cwopk/a-; iod 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*a8tv ye1 oo1 8jldjq; force of gravity by the attraction of a fixed proton some distance above it. How fa8jt;ao8 qo *djyv1 le1r above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting t:/ns(a w cu3gj2-qvd dhreads which are 30 cm long. Both are given identicdjca3q : s-v2ngdw u/(al 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 hasn fwkbkw vk43*2u(m ;cms 4id,2xvj.b a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from the nxbmidj2vkm 42un 3, wkvfcbks(4; w*. ucleus?

  What are the magnitude and ;ktn.:dxo;h m sqnft3 f-/ko 7direction of the electric field at a distance of 1.50fk.n3son;-dtq ;mo7 f/kth x: m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small teo )js*okl sa jd3p .;thd ct84xzen*7wf)hs36 st charge. What is the magnitude of the electric field 3so nce.k3w4* s7p*;lh df st))tohdjxj 68azat the location of the test charge?

  A 5.0-C charge is 10 m fromn 00lkzqdr*hp2irq)qgiy7 , 0 a small test charge. What is the direction of the electric fiel 0*l iq rpdzhyn0,kq2i70qr)gd?

  A 5.0-C charge is 10 m from a small test charge. Wha,lr z56 njyx-ey2iwx(0;oyz i t is the magnitude of the force experien2zrx,06(o 5ei lj ;ynyiy z-wxced by 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 afco9a;u-.-m 7 hn 3zve3esrd mre separated by a distance of 4.0 m. What is ou--9h3fvsm.m 7cd r e;zena3 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 andscpt8euu (s( p)6y s)j a -4.0 mC charge is placed at the 50 cm mark. What is the electric fielt)(psu6esu c8p y(sj )d at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm marm 4 rq .;xlhh z,obp*ml54oyk)k of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining obl)lm*r4 yhm5xpk o.z4h;q ,the two charges is the electric field zero?

  Two point charges of +3.0 mC ang.tbek:.i0 dld -7.0 mC are placed at x = 0 and x = 0.20 m. What is the 0.tgdl :i ke.bmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges a/*wx2g 7 x(/*uyk,lbrgui: xs lbgyuy+ cz /p(re at the three 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 centg s * :y uiz/kyyb/c* l(x(2x7uggb ur/xl+wp,er of the square.

  Consider a square which is 1.0 m on a side. ;bhwl) 2f i )vfqo4.pzCharges 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 i4w v)f l p2;)qh.zobfcenter?

  A force of 10 N acts on a charge of cc/;z;l8 ,gpepgpp;*7azs zx ba3k9e 5.0 mC when it is placed in a uniform electric field. What is the magnitude ofc9e ;a,zplga*b;k7pc ;p8g se /z p3xz this electric field?

  A particle with a charge (ltvmr)*(v nn.tjk;i 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 placed injoq0jh( 1vsj8 an electric field of 6000 N/C pointing downwar 8q(jjj1v o0shd. What charge 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. c5-l cpz 01eq/s*txgu The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude an0 zs/xt -pclqc15*uged direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2./ zu,rihk2hfs-e)+cg 0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacr ,)icsh-gukz/e2h f+e?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. W*i oxsrvx:7ifbg7o;1 hat is the electric field 6.0 cm from the center ooivx7;g:bxsi *fro7 1f the sphere?