State the law of conservation of elect:pd( shkh-:i2qp38yq dn:wgn ric charge.

  Is it possible for two negative cha-xi7fbyh-t qoxj:w 1 *;zf(l hrges to attract each other?

  Is it possible for a positive and a negati( f 0qzwb6z0zhve charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the ptywf/k b4jhp/ yrx;7 2rocess the glass rod acquires ;4 kr/hf y/pbx2yw7tja positive charge and the silk

  A proton carries a

  The model of the atom shoc 6v 8mn,bheu :hn m +m3rjhow:mo;65zws a

  A neutral atom always ha598n2 x:ecq2 w ,oocjtbl*b vks

  An atom has more elect48-s4,vi yypm. 9ormjas a yg)rons than protons. The atom is

  Materials in which the electrons are bound very tightly to thelgghy. ug* / --gr*lgb nuclei are referre y/ghr**-bglu l gg.g-d to as

  Materials in which the electro j 6,u4xqutgc,ns are bound very loosely to the nuclei and can move about freely within the material are refug uj6t4qcx,,erred to as

  A negatively charged rod is brought near one end of an unchargum)h;6bt hmvie 20ct *ed metal bar. The end of the metal bar farthest frh2;)bvciu e6mt*t0 mh om the charged rod will be charged

  Sphere A carries a net positive charge, auiqq+bpjjc+,6 d/ *cqnd sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is qjd+*,/b + ci 6upjqcqgrounded. Which statement is correct?

  How can a negatively charged rod charge an electrosco3xwywc 2f*49ob2 qg)b /i7gi otld)r tpe positively?

  An originally neutral electroscopekv whd ,ult nh)/w.k6* is briefly touched with a positively charged gla*hk )tv 6dwl /w,.hunkss rod. The electroscope

  An originally neutral electroscope is groundx4bh- g4sy7.n9 vh6vmrkvp t:ed briefly while a positively charged glass rod is held near it. After the glas7 vvxpv m:6-hkhg4 s4btry.n9s rod is removed, the electroscope

  A positive object touches a neutral electroscope, n(rlw;1xasi;r6* )mi.ob qne*k fa/ iand the leaves separate. Then a negative object is brought near the electroscope, but does qw) ;xonailnre(* b/ 6ma*1f ir;k.is not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins ;tkxt:.z2odxulated table. A neutral metallic ball rollsxt k2o.:dxz;t 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 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 Coulohpi4onzw -bek878rx6q 16hz amb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance - qyt:)c ulpss0+r8e sd. The first charge is larger in magnitude ter: yq0t8l ss-+upsc)han the second charge.

  Sphere A carries a net charge and sphcto :7 b-f2a(9oiws:yj40 s.rtr/2nedyzz gnere B is neutral. They are placed near each other on an insulated table. Which statement zsf0y49d z7 c2/:yr2regi:n -tonosb(tj w.a best describes the electrostatic force between them?

  Two charged objects a 1(v lr3nmf+zaazy::ra:ix* yttract each other with a certain force. If the charges on both objects are doubled with no cha 1+a x:y3ianyv:z a*(l:rmrz fnge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive : dlmws:x. 1utforces of F on each other. If the charge1su:xw :d.lmt s are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happes/*ktt + :1, zinvyquons to the force between them if one charge is yoqv +zt tis1*:ku, /ndoubled, 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 distaeipc 8c:6 ey6j jvv ,-ro+1cxlnce of 1.0 m. What happens to the magnii :ej 6r1vl+ c,c8 joxc6-vpeytude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sepa(i. /nxqim97bm 0srl irated by a distance of 1.0 m. What happens to the magnitude of the force on the f/x7iirbmi q(sm0 9n.lirst electron if a second electron is placed next to the proton?

  An electron and a proton are dy/a g3zc c9;:bvi4uoseparated by a distance of 1.0 m. What happens to the size v cic:ud; b43/ aoyg9zof the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed ajfr: ht k/x 1br+f:x-wt the center 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 force of 2.0 N acts on the positive charge at the square's center. Now, identical charges of -Q are placed at the oth :ktjr+w/ x- fb:fhx1rer 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 pf3 c-8( upp;s+s o9wn 8wx5yyedr llh*laced 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 cent-p*el9yhw8(+lpr f3y s uwncs5dox8 ;er charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is nx) 6)/e g.ui n+czktuxot a vector?

  At twice the distance from a point c9 5:forj f g5gpk2wvd7harge, the strength of the electric field

  Is it possible to have a zero electric field va9s q7nw()+xwa.cekeomr9nk (ui d-8r lue between a negative and positive charge wem 8 + qk wnr7sk9ad-c9 (xr.)(uioenalong the line joining the two charges?

  Is it possible to have a zero electric field u gl7;x7)(yifx0 ghql+obue9 value between two positive charges along the line joining the tw(ix gohyu0 )7+9;eg7fx ll qubo charges?

  Electric field lines near psit clgaby5 n 37 vj-9ir)if;bo5hj6h )ooive point charges

  The electric field sho*dr7e1jg krf w0u h,m:wn

  Can electric field lines intersect in freeq o(us(1mjr*i space?

  A solid block of metal in electrostatic equilibrium is placed inwf0unq0q; kj. a uniform electric field. Give a statement concerning the electric field 0.jfqn k;uqw0in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equfnh;ac,c. q6oal diameters are each given the same charge, the electric field (E) midwc6h. of;,naqc ay between the center and the surface is

  A cubic block of aluminuxikg8 p81 k29zy0fl-c26ind gm fsbw1m rests on a wooden table in a region where a uniform electric field is dl bmigk2 czk1yi1g80-fx6p 9w8s 2 ndfirected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in ein7ai .wfn5z) lectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hol r12:e1w c66f yw8di -dzfyfodlow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spherfz 2e8w 1 c6dd:yyfdw61 of-ire has

State three properties o:fo j.7-vj9wxrn)d zzf conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron kh-d/ jw)sbp3 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 tha oobwj*9 : .1ezpoo8xhn electrons does this p8zoo:b h1e*j xo.op9 wiece of plastic have?

  What is the charge on 1 kg o4veo hyffnma:b0)9 j(zvu i0)f protons?

  An atomic nucleus has a c vraj9sjo2p2i3md,hc at -2)dharge 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 values of edjfoy i2 e)z:8d;h /p2.0 and -4.0 mC, respect2f /p )8y hjided;oze:ively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tg ksxjcw3*5d(+ju3rr9 wd jt 8k1bm4 ihem is 1.0 N. What is the w c4imd +( 1ukjwkjb89rd3* tr5s 3jgxmagnitude of the second charge?

  Two 1.0-C charges have a force between themo2; fltd4p3fl of 1.0 N. How far apart are they?

  The force between a o4np7te u2cc3$30 \; mC$ 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 ay munemdg9 z8c 3g+i t+8pj0;ire moved to a new separatioy083g nc+zmuijmd e gt+ i9p8;n of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the 7cy4/y +.zj,itu1dbnsw2fat 6 m qwm8x-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 marmz.u746,t+mt j 2afdy cqwiwn1b8/ ysk. 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-ax.aa vw)6f:acu is. 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 force which acts on tau .vc6f) wa:ahe charge at the origin?

  Three point charges are located at the following positionshnbg68iknvwz( ji3t+,l/ mi): 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,/n m3b+i wi 6gk(tlh8i)j vzn 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poc 0zb 1hc(zld4int charge of -Q is placed at the upper-left corner. It is observed that an electroszc1lh0( dz4 bctatic 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 nC is atl;n5;7auf ztie y;7q2fh e u6n (0, 0). What is the magnitude of the net force on the 5.0e 7ie;6;;tnuhanqf2f 57luz y nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 y1)kmy-fk eu/pc gx,2n4rb+t m); Q3 = 5.0 nC is at (0, 0). What ct /f+um1e4 -kk 2n)yyrp,gxbis the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ofgv;qv zv9,bd.o5s5 yo an equilateral triangle which mgvd yvb9vs5q ; ,.o5zoeasures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what poi,s+lp ;-7mv7zxr kuvant, on a line between the two charges, would it be possible to place a charge rsmaz xl vp+-;u 77k,vof -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the or/ps,-bp y c(wuigin and a +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 is ,p yuw- (bcps/zero?

  Charge +2q is placed at the origing:b 90 jtba)/a) fmffe and charge -q is placed at x = 2a. Where can a third posijfb fam/fg :)bate9 0)tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of o k(ipkj/)v/q3j.drx 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 gravim glyh4-.z b6p(y6n 8szj su4gty by the attraction of a fixed proton some distance above it. How far above the electr.s(lz8g4z6ysn 6m yjhp- ubg 4on is the proton?

  Two 0.20-g metal spheres are hpm7xs*ac2 76ul3 xnulung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the thrcxp3 anm2xs7u 6lu* l7eads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus hav)39on2 s)tj *m kah/k5 uzqcgs a charge of +40e. What is the magnitude of the electric field at a distance of 1.gkctka9*u3 5z)n) 2 qh/ms jvo0 m from the nucleus?

  What are the magnitude and direction of the electric field 1g yrqb9.yw42ikiy8hat a distance of 1.50 m from yb 8wih i291q.ygkr4ya 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudq byrh2*9j z89zil8boe of the electric field at the location of the test c*oyjhr 8 zzblb99q82iharge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionk y jfqz3,e1kc07 e0hg95hhht of the electr0h3 9 hhhq ez0fegckt,15jky7 ic field?

  A 5.0-C charge is 10 m from a small test charge. What is the mag oi quecyigh-*8n+ 11cnitude of the force experienced by a 1.0 nC charge placed at the location of the test charyo1c eg8n1qi h+*-ui cge?

  Two point charges each have av2s2ydg10 pb yi1d u;h value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway be2v21dsgybp0 du ; hyi1tween the two charges?

  A 5.0-mC charge is placed at thvbkd,*z 4wve d+o s+;ae 0 cm mark of a meter stick and a -4.0 mC charge iskb;awz+o *v, 4ddesv + placed at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plaj 5d+a f*p(ytqk /hl8eced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 5f+ lqyjk p/da h*5t8e(0 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges ofbjrpo0h r0e:0 +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of th op00h 0rjber:e electric field at the point midway between them?

  Three 3.0 mC charges are at the thf md fyzhm4.5ee3/v k) 3 ap23sy/ctgvree 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 centerma h e3532f kytecvvz)4 /sfyp.3dmg / of the square.

  Consider a square which is 1.0 m on a side. Charges are placed p ia7sii0dl5 ,at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC atid ils7 5,i0pa (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 charge of 5.0 mC when it is placrbq tw9t7zqv,.yl+8ned in a uniform electric field. What is the magnitude of this electric fi lqtb+ztqyr 98,.wn v7eld?

  A particle with a charge of 4.0 mC has a mass of 1g:mt+ y ivfdb3/a z+m dn..vp$5.0 \times 10^{-3} \; kg$. 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 fiel wup+zpy6lz-*5lek(9qo g 8pmd of 6000 N/C pointing downward. What charge must be pla6+z9 8ylgkl p-*o5peuwzp qm( ced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball io+mt4 d -t7k2unrmla.s placed inside a uniform eler4+t.7 dman lmu2tko-ctric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10hnw:kc47 er ,u cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm frw:k7n4uerh, c om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the e 5zky4ui9b:v: qke9dnmfx*e9br,bv( lectric field 6.0 cm frqf bv4(9ry9 xbd,zm u: :en9e5kvbk*i om the center of the sphere?