State the law of conservot um3;bdrpg: gu406 eation of electric charge.

  Is it possible for two negative chargb;cdjg ketu l)zbh5ge0/(5 0 ses to attract each other?

  Is it possible for a positive and a negative cot+zpsy0 1ksz 5n0y 7l8dae9pharge to attract each other?

  A glass rod is rubbed with a piece of silk. During ther k;od5q-ck xy5( -wyk process the glass rod acquires a positivek ;wyork(xy5k5cq --d charge and the silk

  A proton carries a

  The model of the atom shows alm7(abf: crc c fc3 lte:+h3d5

  A neutral atom always has, gk.4jxm5 t.nxov:-df/ aish

  An atom has more electrons than protons. The atom iku9m 9wto1 p39qkdvc.yic-8 qs

  Materials in which the electrons are bound veryi:z9d szj sf.7:ryt m8 tightly to the nuclei are referr. yms :tisjd:zr78fz9ed to as

  Materials in which the electrons are bound very loosely to th ) vrv:btq(5.hdx1i vu+9h0 lf:mumgde nuclei and can move about freely within the material aredh:d v(1 ) m0 lu5.tbxm9+:vfriuvhqg referred to as

  A negatively charged rod i :06s tnkxbr16lg4 7rva;hacns brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b4avn xrg:07arn s 16t;6clkbhe charged

  Sphere A carries a net positive charge, v 3ry5yar8 eq2and sphere B is neutral. They are placed near ea2v r85 eryqy3ach other on 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 electroscope positivelq-gc)niinz:zo /hetcdr -2u f 3.p 6s/y?

  An originally neutral electroscope is briefly touched erkun/ vg6 xxk:n3m /9with a positively charged glass rod. The vemnukg6:k3nx9x/ / r electroscope

  An originally neutral electroscopcm/k+hu* vv; ne is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, tm/;+ uk cnhvv*he electroscope

  A positive object touches a neutral electroscope, and the leaves separate. tj.7mms/ zlq1f z3c-bThen a nbtmz- lc1 ./zs7jf 3qmegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively co, ,mr cb5u hjond;:9sharged object 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 tjs,b95;dr:n chou, mohe 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 of9mv0) igv ,zirg1r)0i m5egrq the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger ixymk nz48x)lh3imknfvm0r6a.34 7k g n magnitude than the second charge. n0n78kikzmlx 4my 6x)m4v hrf3k.ag3

  Sphere A carries a net charge and ss; dlxd2cq yc gv,vz12og(-s6 phere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force be g1d2(z2sdvc ;yoxsl vg- c6q,tween them?

  Two charged objects attract each other with a ce14 ,slr ecsv.lrtain force. If the charges on both objectses4v,l s.rc1 l are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attrpg6cyjy6p3v /n rx7 )pactive forces of F on each other. If the cgnpx 7c/p)yjp v 3r66yharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each oth,7iv v akle7u-er with a force F. What happens to the force between them if one charge is doubled, the other charge ik 7-v7vlua ei,s 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. What h/ yynjd 9)5jgrappens to the magnitude of the force on the pr yjrdg/jy)5n9 oton if a second electron is placed next to the first electron?

  An electron and a protxdv6*p )xjxl8 on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second ele8)*xv dxljp6 xctron is placed next to the proton?

  An electron and a pro9wa11t7ew+ k drocf59ngg 8xdton 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 thea+1 cgd g8o9d91 r wenkxf57wt proton?

  A point charge of +Q is placed at the center of a square. When a second pofuf yd/w ;k 0rdj9pfnu ,70(gjint charge of -Q is placed at one of the square's corners, it is observed that an electr np9fk(j00,u ;/yrfd jw7dufgostatic 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 positive charge at the center of the square?

  A point charge of +Q:7/ytvm bt jt0 is placed at the centroid 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 center charge due to a third charge of +Q placed at onb t:0y/j t7mvte of the other vertices?

  Which of the following i+epc;.g6b *6iau sws evs* ym;s not a vector?

  At twice the distance from a point charge, the strength of the electric fy.i nazi0x2 xrni *r.(ield

  Is it possible to have a zero electric fizo)h gp1p4w*k tcb+nex3n 0ei2 +iz 9;catz+teld value between a negative and positive charge ali30wt2ko4znap+ +) 1hb xz;cp*tgiec 9zn +etong the line joining the two charges?

  Is it possible to have a zero electric field value betweez1nj6f er5 x5)soi by8 mpq5/iaqo *+sn two positive charges along the line zp n 1bx/ *yof5 o5ms5ar8)ei6qiqjs+ joining the two charges?

  Electric field lines near p8 0k adf y5yz24ljo(kpsitive point charges

  The electric field spp4mz9 ;) *khlf1sw iddoaz7 5hown

  Can electric field li0h1 9duv taa4irs e8s(nes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in ar pa-y9rpnq u 9+-,q;sm 3r xtj29feea uniform electric field. Give a statement concerning the electr;mp-3fx+9 rternaysu92e a-qqrp, 9 jic field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal dxkl:a 6p+5u pyl4;q qciameters are each given the same charge, the electric fiy6+;ax5q p:plulc k4qeld (E) midway between the center and the surface is

  A cubic block of aluminum rests onui ) awpcnn*x: a0 l3bqr s*s10jw4p8h a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block*x j u100s8qrc:)l nw 3 ipabp4w*hnas's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargnhhv cs(/qn k5smgx7 60w/3qke

  A positive point charge jj:9i5 h;i*quhygv w8tl. ;muis enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly abovegy:u .;h5*;liut8hjijm vq 9w the hollow sphere has

State three properties of conducto(c ( 25zabvo7c c /grmi62fdqrrs in static equilibrium.

State Gauss's law.

  The charge carried by one eggp:i7ya8n52zxb,r h*z g v 4u ltn)2rlectron 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 o +a40n63vvjge2zd yja net charge of +2.00 mC. How many more protons than electrons doe32yjogvedj+na v460z s this piece of plastic have?

  What is the charge on 1 kg of psrtnko+fut8g-+nn *4; h oqm )rotons?

  An atomic nucleus has a charge ofor6vkl(x b l2+ $+40e$. 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 22,+qmj4 iu wt99) smukm1sd sn.0 and -4.0 mC, respectively. What is t ku u2sd+m,n994s1qm) isjmwthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwez76vn;(don5+r d0alg 3 othmnen them is 1.0 N. What is the magnitude of the second charge? da3zt+or5odvnn ( 6;mng07lh

  Two 1.0-C charges have a force between them of v:4snd,5qm l-x-u+ upux gla+1.0 N. How far apart are they?

  The force between a g.ords o+:zuex234(dg k9oh b$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a3 m8wmuow dn0+bv2il/ 1.0-N force. If they are 8um/+n3b2lwiv mo0 dwmoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 i/g1icv(9b.ae9ukqo d fw 3v0mC 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 thedf i 1uwb0(av.g /vicqko 9e39 electrostatic force which acts on the charge at the origin?

  Three point charges are placeduf7u*l.u(,w+yzpuw zj 4m8fi 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 direction of the electrostatic for,fy( *u.47zlwwu pf +u jmiz8uce which acts on the charge at the origin?

  Three point charges are l;d l+ 1e a+jijlf-ba72ryfm a7ocated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.0yl+dfb+ j7 1eafi2l-7jmra; a 0 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is pq3m5q m-4mcx/m hjc/v laced 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 positive charge at 5xhqqmv m4 c- jmc3/m/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); Q3c0*qi,zky*4 ry1ek- jmz .t*lohm kl/ = 5.0 nC is at (0, cyq t zohm*,l*0rkz4k -ey1l .kmi/j*0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1. wdza3k1w ,l9 f2gkg:p0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 2w1wk: k9pdafl,gz3g What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate3fk53x ooo0ahv5qsnn)/0 e1p iz:f v wral triangle which measures 30 cm on a side. What is the ma3eqnw3 vo5 a f5zx0 n/1v0poo)f:ishkgnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Qs6:i, )rodm zm, 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 th:i6,z)msrod me 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. Wher fu fmq d21-qp5 flx;b 1kzup5x i/9v)jxf/;nve on the x-axis can a third charge be placed so the net force oi;;dfzun9/xvu1xpqq/ b )vff5 x1f2-5mkj lpn it is zero?

  Charge +2q is placed at the originp sew ezlsf) ys586(-t and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the for5 s8s6f(stwy l-z eep)ce on it is zero?

  A copper penny has a mass of mk *5:gldx w-n3.0 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 gravityly +ci/dn1d0pxav7)zq*4j y. 5 c -v usk)gowh by the attraction of a fixed proton some distance above it. How far above the electron is the protonw*qs / zy1 0v)cu-h 5xoipdn a4dk +g)ly.c7jv?

  Two 0.20-g metal sphen(hub:lb7 5idv c+n5 4j f)cseres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electross+ eb)(:5vci7 n5chdjnf4b ultatic 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 vp4ots2 /coy,magnitude of the electric field at a disvp/, 24cotso ytance of 1.0 m from the nucleus?

  What are the magnitude an) -94q7. b mc;pfg98nenohiztqdm u8 xd direction of the electric field at a distance of 1.50 m from a - 7 8)4z.iqdpuxbg9nmh n;q o9etmfc850.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wzw7k + ziq-mn3hat is the magnitude of the elec m7w-n+zqi3kztric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What pe 4bj5ecz3ih5shu1+lg)6aq is the direction of the electa+635 ezei 4hq1jp)5usblchg ric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude8sd q.kp*tsgyn9v o +0 of the force experienced by a 1.0 nC charge placed at the location of the test chargegov*9k p+0 sdqnts.y8 ?

  Two point charges each have a value ofnl0; hj.bsw9 1pydn5tt1cq -j 3.0 C and are separated by a distance of 4.0 m. Whanj;.dy l-p0nc51j1wt9bhqts t is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the u9-0k8n g phae0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. Whkp e8ngha0u9- at is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mno8+ku6 (:cowve( lskark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric u(68ocks vo:k +(elw nfield zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0qtd;vndka e -i0 90qc2zj ) +u3rxc7oa and x = 0.20 m. What is the magnitude of the electric -qe d0x3odi+vck;) rnc2a90tq u7 ajzfield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square xyd58pn1n+s jof side 0.50 m. The last cornd s5 1pjyx8+nner 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 are placemxex)37dp f0jd at the corners of the square as followm7pjf0 x)e x3ds: +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 cham , 9ksh-(iz*yf c4lkirge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudl9sh k iki4,m-y*(zfce of this electric field?

  A particle with a charge of 4.0qs;9vh/ zb x(q qqh6x, 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 in an electric fa*/5:i h8kw ,wvjm l0edyp)u7nud.ew zrq::eield of 6000 N/C pointing downward. What charge must be placed on the b7pak hu8) u: vwid *wnl eer:w ,5yjmzd/:0.qeall for it to be suspended?

  A foam ball of mass 0.150wmv-*cy/z9u oz3von0 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of 0n zzouc /v*vom3yw9-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 isirdq/ h rr4;eb)rt (0y the magnitude of the electric field 5.0 cm from the spherr;/ibtqdr (0yrr 4)e he's surface?

  A metal sphere of radius /p kctqq.wum8 u:k ,z*2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from tq*zwu .tk/8 pm:qkcu ,he center of the sphere?