State the law of conservatgy+t5s4 7cl k;n dwyec :c ,dk3.pkw3gion of electric charge.

  Is it possible for two negative charges to 6tc cipvsmvg:0l n8,3 attract each other?

  Is it possible for a positive and a negative chag1r0syy.xi;xkhg) t33a u1 korge to attract each other?

  A glass rod is rubbed witc2u yt l 9h77gfi0e0tzh a piece of silk. During the process the glass rod acquires 07gczy0t h u97fltei2a positive charge and the silk

  A proton carries a

  The model of the atom shows smstgjf,j:,ga4: ke. a

  A neutral atom always hasb5 6vrnlh5drz; 5w:nf

  An atom has more electrons than protons. The atom u 7 ri,xfgu3i/is

  Materials in which the6u7jfb i 9ur5em7s8cf7l*go4u0ykmp electrons are bound very tightly to the nuclei are referred tof us5mgo7 r*7u 7 jfemucb48ilk69y p0 as

  Materials in which the electrons are bound very loosely to thex3c s:35lg *tlba+boi nuclei and can move about freely within o*3:lbxigt s+ l3bca5 the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal w0-r r9x4 txvgj lt (knml;-b/bar. The end of the metal bar farthest from the charge(0kx- r4n tr mv;/xt-bgjl9wld rod will be charged

  Sphere A carries a net positive charge, adpb3y8a7x 7pfy ro-4ind sphere B is neutral. They are placed near eaciy78 r4 daob3xypf7p -h 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 cha r8s8r)qk r4onq0rk5krge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivel89 sj 60 lr 4syk,hk5dvvft2fqy charged glass rod. The elevl4sf2dkf0 qhyv,9t8 5k r js6ctroscope

  An originally neutral electroscope is ground /bodj5rpq)str4+08w ma7 dac ed briefly while a positively charged glass rod is held near it. After the glass rod is removratq 4drs 57pwa) /bj+ mo08dced, the electroscope

  A positive object touch*u d 7rb.3xu.ahygm f1em e+8les a neutral electroscope, and the leaves separate. Then a negative object is brougx. b+uey me.8a1 3*frh7 gmdluht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charg4)co7s -/ex0pjfdrsxdm 5 5byxx;u1ged 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 the first ball, strikes the first ball, and stops. The first ball rolls forward, but doesd;f5rxdbx0- s)c4s guyjx1 /5 m xe7po 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 Coulomo c va10h3q12-wd 5z9kdfxt3ty 2whl wb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger -7oppdfqx 2(pin magnitude than the sec fpxopqd2(- 7pond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed nearf *d8p(s ; ..k(aim+cb hwlmvd each other on an i.+dmv(h *k. mib ;(ldcp8swfa nsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain foq1 yny2z: 1mlirce. If the charges on both objects arqyn 21ml :yz1ie doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractiveno pk* e)1)50 (miba cj6vw ;je4yjolw forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forcn6)iya4vce*j oe wo;wl( )m1j5kb0 pjes?

  Two charged objects attract ead1ce.i *f5bl s7b sxa3ch other with a force 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 original value? The force isx7d bsbi1.cl 5f3e*sa now equal to

  An electron and a proton are separated by a distance of 1.0 m. What hb2gs v hd0xb ,*x*(lpjappens to th* xp ,b*b2djg0l(hvx se magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton ag p- afr0;r+oire separated by a distance of 1.0 m. What happens to the ma; + p-rga0iforgnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separatede f+ ri n7.pq;begwm6. by a distance of 1.0 m. What happens to the size of the force on the protowr+qgepb.7 n f.;m6e in if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plac;vi *k.0qc ek54tckqkwu92umed at 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 th mukeukcw v9k; qkt c2*5q40.ie 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 trianglvmrok*5,v mk) e. 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 one of the ok)mk*o,mrv v5ther vertices?

  Which of the following is not ;:a tlgb0w2ylq2/ wraa vector?

  At twice the distance from a ;pkseu4wsn+tnuqf0 i+tdw t822 *o1m2sgaa:point charge, the strength of the electric field

  Is it possible to have a zero electric field value bet c5 b cy3i3ms l((z9ss3ftt5oeween a negative and positive charge along the line joining the twc5t3l5bi3(zy(9o s t3emsfs c o charges?

  Is it possible to have a zero enu ezc12 i,m4cudw2b+lectric field value between two positive charges along the linemucdn,z ci1+bw4u2e 2 joining the two charges?

  Electric field lines near psitiv (mog av)j2;yuu.m y6 sfyn7s6wa7;jme point charges

  The electric field sh 1 06x i1jtzyjgce1(xfown

  Can electric field lha,8 yqr clu su3imd6:*boq*7ines intersect in free space?

  A solid block of metal in electrostatic equili cfoelszce1;+ cfq.8;brium is placed in a uniform electric field. Give a stc 18cff eoc e;sl;z.q+atement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eacqf(n8d wc-pa v/ vpk;,h givk( ca;pwpdv,-8nv/ fqen the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a woodekvk u51ot/ul,j c d3q8sb 6gd9n table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t5 lt1ukq8bc/ odgdu 639svk,jop surface?

  If a conductor is in electrostatic equilibrium near an electric cbjsid2z,sqp)(46; 3s wgyh bc harge

  A positive point charge is enclosed in a hollow metallic sphere that is g8 dnz s3j oo:+q2cl8gcrounded. As compared to the case without the hollow sphere, the electric field at a point directly above n +o odj g8qlscz382c:the hollow sphere has

State three properties ohgl 5lhl/8sj 3f conductors in static equilibrium.

State Gauss's law.

  The charge carried by) zhzz.)xuy;eq5n8j q one electron 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 1vvpu / t)r m(7t t5,knmtq0mr+2.00 mC. How many more protons than electrons does this piece of pla,(7t5mkvrqn mtu0 vrtpm/ 1)tstic have?

  What is the charge on 1 kg of profkyl7t4 g 40pr vafu42 m*on:otons?

  An atomic nucleus has a charge o9 zqnu v+l3 3ymfklc21f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm-c uoxkv of 3 co4,th6*d8yco1, have charge values of 2.0 and -4.0 mC, respectively. What is the my63 tho14-o*u, kdcov 8xcfcoagnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 No)zmgm+ 2 iy6z. What is the magnitude of the szyzm +imo)g2 6econd charge?

  Two 1.0-C charges have 4rutfheq16lbp(ne di6u.h( p ;:kh(d a force between them of 1.0 N. How far apart are they?

  The force between a q.l58* saw vveljrz08 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.1ytzf7ckr,( w0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between t1(f rz ,tkcw7yhem?

  Three identical point charges of 2.0 mC are placed o55kzy06xe+h zuf jl3nn the x-axis. The first charge is at the origin, the secuf jzx3ly 65zkh05 e+nond 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 origin?

  Three point charges are placed on the x-axis. A charge of +2 j+mt+c7yr61h;tkedf .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. ktfrhj6c +mt;+ 1ey7dWhat are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at t6:8uvob yta )m47utmh sv105yybd1w mhe following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the by6dh ya0ms1uu4ytom: m)1t5w v7v 8bmagnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point c eo(suw (; uvogamd8+-ha(odvs;o- u m au8(+wgerge 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 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. *eglx/s 3k(yfugq0 i m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 xggkfu/3l .ei(*q y0snC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 zw6:-x28 yg npxjecu. nC is at (0, 0). What is the direction ofyje2xg:zpx nu 68 -wc. the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC 9zj-6djpw(r z are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the ch d6-zj9p(rwzj arges?

  Consider point charges of +Q and +4Q, which are separated by7 g2ab0vzrj0r t czf37 3.0 m. At what point, on a line betwee 0a3rr2g f707cz ztbvjn 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 igvni qtyd2v ,u xx1fv(: g6g svr335b4s at x = 4.0 m. Where on the x-axis can a thv 1,5 b3xq:iyf drvstn24u 3ggvx6gv(ird charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qfxx:mnp uhxvj ;71c21t8cv4x is placed at x = 2a. Where can a thir1tv fx2nv;1 mxjxxc7chu p:84d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.7,v p52l.he qaja+kwa 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 forc/i8x/h70e aluowh/ xr e of gravity by the attraction of a fixed proton some distance7/ haowu/hxil/r8 0e x above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a c8nzf;7 g/ys4b)hb2zxieb 0a pommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle bzb0e 7yig8 h/4 )f x;pabsn2zbetween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitu, +lw e/-slx* (soea- ic+jm2w: vdaqrde of the electric field at a dixqa:lw+ac+s(v w e *is r-/m- e2,jodlstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elelb h).d9)k,j1 tylaebn g, y)gv4i*xuctric field at a distance of 1.50 m ui9 *)l kvbgn. y,)ltbheag,y j )14xdfrom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smalk8r tcl8nju- kh-/pgh8 ;xrfi9u 6id3l test charge. What is the magnitude of the electric field88t;hid/39 ngc-u 6 ki rpkhl8x-jurf at the location of the test charge?

  A 5.0-C charge is 10 m from ael.kz c0zvi k;)q5 p+2xo hia- small test charge. What is the direction of the el2x- ;+cai5p ) kvzqhiz.0oelkectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of t retgoj/z9u; (z+fw a4he force experienced by a 1.0 nC charge ;f z4eog/a+rw(tu9 jzplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C +:v6ml tuy 6vqa a.j:fand are separated by a distance of 4.0 m. What is the eleym:j6:+qauvflvt6a. ctric field at a point midway between the two charges?

  A 5.0-mC charge is placby)x97 nccve 6/ flf2bq;rv9 ped at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fiee2fvl9n fr9bbvx q7/);y p6ccld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mr +xb6fmixa 6m.np*s7dhi w(x)qi7; weter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining ther*(qi bm7)f6x wnmpii 6dsx7wx +.a;h two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 an xq,hsgpe5*rph+ig7(h.xc-q d x = 0.20 m. What is the magnitui 7 . rhqegp-h,cxqxg+h5(*spde of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a 36 7jdy:2(j,cin owk, xs pqvpsquare of side 0.50 m. The last corner is occupied by a -3.0 mC chargenk 3qxc,ipo syw:jjv6 ,7 2dp(. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corne/cdd8w7g s566 ungfukcw(5 f xrs of the square asw6gkd7sxfc( 8uc5gf dunw65/ 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is place tfu52o2qp9arle,u/ od in a uniform electric field.rto/oquf2 9 a2e, p5lu What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass oyb :2jz8 7aihmye.3hlf $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is placbvhpq-ufs( 8 oa 037kked in an electric field of 6000 N/C pointing downward. - okk8 faqhvub(0p 7s3What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 gqh i-(bg cy08;*dqha fno+ fj. carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are 0q;hc8- yajh. (do+qfgbfin *the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chqqon f8 vlrt0r+j09 z)arge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sp9rq0+8qnfvro)0z j t lhere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the er9t8 y/wjbz 20wc /puu:h sxyw.*ya:rlectric field 6.0 cm from the cen 89w pb r:u w.x2/uac/0 szyr*jh:tyywter of the sphere?