State the law of conservatit*jwr oti:r0wnt 6a/0 on of electric charge.

  Is it possible for two negative charges to attract (ra,fuy/2y sis8zl y(each other?

  Is it possible for a positive and a negative charge to attrach zway/-(k,) /vslo 8lqlk-kyt each other?

  A glass rod is rubbed with a piece of silk. During the process the g*ej qhw3o wu0 8dqcx1;lass rod acquires a positive chargej01 d3qc xe8* uhwqw;o and the silk

  A proton carries a

  The model of the atom showsno+i z2n5 u6mblt- s(d a

  A neutral atom always hasjf e +8ju7t-ce4fh2 bl

  An atom has more electrons than protonm( )ky1 mwdohuhrmfg766+.bas. The atom is

  Materials in which the electrons are bound very tightly t9 pik70ckhu (mo the nuclei are referrcm(h0 9ku pki7ed to as

  Materials in which the electrons are bound very loosely to the nuclei and can ihqg-ouml)p8m2 e;4j move about g muel28qj-)miho4; p freely within the material are referred to as

  A negatively charged rod is brought near omvk:. ,(l l jh d48t;syjkxm)k3vzq wta;d6c*ne end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be ktvhxmqw.a6) 8*,l4k tcmk3; s(jj ydd:v;lzcharged

  Sphere A carries a net positive charl .nre2:pry3 dge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wi.rn:yre2d3 pl re that is grounded. Which statement is correct?

  How can a negatively charged rod zqh 21qmk,p (eys*p/y charge an electroscope positively?

  An originally neutral electroscope is briefly touched wit speyjf ,5ro61h a positively charged glass rod. The electroscop5yp e 1r,fjo6se

  An originally neutral electroscope isns*mcg nc:t u 5hk0h2- grounded briefly while a positively charged glass rod is held near g* 5hmknh0: cc-2nuts it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the *1jxlog f,ny3leaves separate. Then a negative objec13ofnxj, *gly t is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object isjs ra1-j )9wrq 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 not touch the negative object. At no time does either ball touch the nesr9j ajr1-wq) gative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb 4cqf87 mag su1-m 0iau6wwe,w constant $k$, which appears in Coulomb's law?

  Two charged objects ar+qqmf.wr by g* l3,d5re separated by a distance d. The first charge is larger in magnitude than the seconm 3 5+q lrfbw.r*d,yqgd charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed neart+5x9 1r9+n z: giyxukb2vnh o each other on an insulated table. Which statement bes95k +b: nngzto rxx91y2vi+ hut describes the electrostatic force between them?

  Two charged objects attract each other with a certaixih/nv3jg p/o2l7r+:ahp-kxl,(cs7ks ak c 6n force. If the charges on both objects are doubled with no change in separation, the vkk+ olss63/npic h :,h7gjxrpc- k72xl/ aa( force between them

  Two charges are separated by a dista1jdgt-4q hsu3b4rft 7 (ib9k ence d and exert mutual attractive forces of F on each other. If the chargerttd47eigs b b- k9f 3q(1jh4us are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force wcdw 1hqf9 ,0mz+*me;zm;phav h5li(F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its orvz0dehq9p ;+c(, ;wm5mfaw hi 1 h*zmliginal value? The force is now equal to

  An electron and a proton are separated by a distag5 bw r(*v.yatnce of 1.0 m. What happens to the magnitude of the force on the prv5brgy. w(*at oton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distancz :fr 2-csqg2lhna+6fe of 1.0 m. What happens to the magnitude of the force o2+6- asn:zc2ff glhrqn the first electron if a second electron is placed next to the proton?

  An electron and a proton are sepa auv,gt,5 os+mkepr+1 rated 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 the pro5tue1okga ++,srv,mp ton?

  A point charge of +Q is placed at the *fj xy:,ymw n25rk5 amcenter 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 5 : fjym*xa,nw2kmry 5center. 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 equilateral triangle. Wt q0 6su z.d.utq,s2enhen 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 dued6. .,tuu eszq0nstq2 to a third charge of +Q placed at one of the other vertices?

  Which of the following is not abvoi3+,c+ks(h oo yo7.hox 9o vector?

  At twice the distance from a point cl79p3hmj e nrv5z (9qu xsqzl5 ,y8.tyharge, the strength of the electric field

  Is it possible to have a zero electb)owx-a) c ye8ric field value between a negative and positive chargeacyo )e)xb- 8w along the line joining the two charges?

  Is it possible to have a zero electric field value between t b 4vpssu mo7-*)/qjmjakoy. )wo positive charges along the line joining the two c7j.s/) ja*)pvumobk4 o qm- syharges?

  Electric field lines near psitive point char5q.1tyk epxh hgnv;iad 9 8j8u*z21rhges

  The electric field shown .w3 *hy9xtedx zz3of6g+d r 8p

  Can electric field lines intersect in frej4q ztq;b/+jlwp 7ha9e space?

  A solid block of metal i5 zs8ti6j jfky(ychdd;(j; a4 n electrostatic equilibrium is placed in a uniform electric field. Give a stat(5h j;tyj4sdk6ji8( y zfdac;ement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gis it5u w*gy3z9alfn6/jz/4v lven the same charge, the electric field (E) midway betweez z9vlsnj/ 45uwi /t*a3lyg 6fn the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio8id 4rdxtnl,n.: ,nn gn where a uniform electric field is directed straight upward. What can be said concerning the chx nd4.8ntnil r,dg,n :arge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric c hlm:sk5qs.5 c9 f*padharge

  A positive point charge is enclosei tb(t1vl2-aj d 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 t2j l( -1vitbahollow sphere has

State three properties of conductors in static equilib n ql48 f7 qo-qmw45ap02nsxcsup-n6 vrium.

State Gauss's law.

  The charge carried by one electron i.78 tt zwxu0g/roz4qu s $e = -1.6 \times 10^{-19} \; C$. 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 thandlmq9j:(k;p4cz. u*xn eqc5 q electrons does this pi m.dczq(5k9 en4jl*uq:xc p; qece of plastic have?

  What is the charge on 1 kg oqy(o nb y h0u40ooqu2+f protons?

  An atomic nucleus has a chargejv,swb6bcz;5cv 23 ffrc em. ( of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by a+k 23btnm f*r1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bm +tafnkrb 32*etween them?

  A 1.0-C charge is 15 m from a sv1(tyypfq o+ +econd charge, and the force between them is 1.0 N. Wha(of +tyv yp+q1t is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 Nk2htj eiq 0/y nw:9vse5lg6y 5. How far apart are they?

  The force between a r3qcrewxxfr+):9h ) 4 q hr7sl$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initibe37mi*,fxn 2q )x;9 xgqa poaally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the elm *gxq2 fxip3o9)b,axaqen ;7ectric force between them?

  Three identical point charges of 2.0 mC are placed op f( xfl jo.ryqrs6 a*24+yei1q +c7ran 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 on the charge at the origi+x( qes6i*lo y y+r2 f. fc74a1arjrpqn?

  Three point charges are placed on the x-axis. A charge7 lu 6zu-aif(q 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. 7la6-fqu uzi( What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positionsezn5)xc5. kln0:sgj z : 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 5 zxlgc0ez n5)kjn. :smagnitude of the force on the 3.00-mC charge?

  A point charge of +Q iterhiw9ta;4 y o *;u1os placed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is obseta ehot;or 9wi1*4y; urved 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 = - 3xdm/gi9 jci5.0 nC is at (0, 0) /3xgd ci9ji-m. 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 = * jl-uyl. kix *)5pfj7zcos4m p45dwr-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wlj * pmyxr*u4wki)zc- 5l4 psfo.j5d 7hat 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 onxczvx4 ;o6 (ck:d,clf an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whichn(z,do 6cccx 4:;vxlk acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At what 5kw50fhn *p-ra+olz(a xdz f, point, on a line betwel ka*+(z5-0 n5 fpoz,dawxrfhen 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/vu9+s; tubru at x = 4.0 m. Where on the x-axis can a third cr+ 9utusbu ;/vharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q i w92.zeido u/qs placed at x = 2a. Where can a third positive charge +q 2u9i/oqw d.ez be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. 7bkpnc5a+xc;7 zy,g c 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 gravity by the attraction of a:ni-liy (/ne.cus (/tclizfw ;+u g:f fixed proton some distzsuw :/.y; tc n-ie/flliugf(:i(n +cance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting th-eug7txnnx) gou * w6(d8m8yereads which are 30 cm long. Both are 6x8x-uy nu*eom tg ng(w)e8 7dgiven 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. What is thin,vd jpn23wlym7bfnz21to0d-:p /he magnitude of the electric field at a distbmtzwiv :0p/1 on2n,fl3 n- yj 7hp2ddance of 1.0 m from the nucleus?

  What are the magnitude and dn ews(d.+ yde3irection of the electric field at a distance of 1.50 m from a 50.0(+3n eddey .sw-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is t h96 d/(a7qig gmf.whehe magnitude of the electri/9 g ih7qfm (ea.6ghdwc field at the location of the test charge?

  A 5.0-C charge is 10 m from a wep+6 .l*q teusmall test charge. What is the direction of the electric fieleq+l6pw t*e .ud?

  A 5.0-C charge is 10 m fror(+ hwm0pm mn kc x,9m/6w0l. o,4mrvhiplg)km a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thlkm)+(h4k0/cm9xl vm, whgmppr6wi0mn.o, r e test charge?

  Two point charges each have a value o 2+ckn9jh tbl 3g53lshf 3.0 C and are separated by a distance of 4.0 m. What ikb 9ljs5+3cth gl23hns the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm m-hry(f8bt+t5z)ywd z ark of a meter stick and a -4.0 mC charge is pl- y+yzw)t tz(brf5 8hdaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at thw iozse gb2 84ul/y-h4e 0 cm mark of a meter stick and a -4.0 mC charge is placed8ozyhbg4su/ l4-ei2 w at the 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 mw((a /vdvv l4u1(oyqwC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betwy4 (owwv l(ud/1vv(qaeen them?

  Three 3.0 mC charges are at the three do;6g2uwe (d 9+kv,d:epa a qfcorners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at efv;adq:wo +29 d(ge u, akd6pthe center of the square.

  Consider a square which is 1.0 m on arlj fhs qb58h q;3nu/2 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 ce3qbln rq;2/js5h f 8hunter?

  A force of 10 N acts on a charge of 5.0 mC wha9qp van7sr w p3irb9 9+avg9 n;p37mgen it is placed in a uniform electric field. What is the magnitude of this electric fw9nv7 gpg+p999bn m rvp3araq37;si aield?

  A particle with a charge of 4.0 mC has a m7y.gr2du*o ; fthwoa 5vm21ndn(d3m c ass of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of g;o/(t)fou fzmass 0.120 g is placed in an electric field of 6000 N/C pointing dowft(; fg)oozu/nward. 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. The ball is plzzy u(1 yu5cp+be0x/paced inside a uniform electric field, p/uy1ce zuy5 z0xb+(pand 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. l poghiir 3e-27dmsse,s h*+ kg(.fsr.3ww3g0 mC. What is the magnitude of the electric field 5.0 cm fro l3,ef(idrh . g37ohse+- gpsgwk2 .r3i*mswsm the sphere's surface?

  A metal sphere of radius 2hlj. t1h3--e m1)be33 zgmktvvmb9 ed.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere-.db1)me 3 9 kv-mhv31h tbgetmejz3l?