State the law of conservation of electric chary:maj b x-9xz/ge.

  Is it possible for two tenlt9aq0rr *d0zm5) e++zxm negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each ot.0 sc*ln4x xsvher?

  A glass rod is rubbed with a piece of silk. Duriot 7f3 uiw(f;jng the process the glass rod acquires a positive charge at 3w7(o ;fijfund the silk

  A proton carries a

  The model of the atom showe0*gf- e+3zkaug h.i ws a

  A neutral atom alwayr;vqu7h4t es:bqo i3kr 0+x6m(yil g, s has

  An atom has more electrons than protm )3hy2rall, k 2utk3sons. The atom is

  Materials in which the electrons are bound very tightly to the nue zgd5tk./p:4eg yvw 2clei are referreg z2e:5yvpdwe4.kt/ g d to as

  Materials in which the electrons are bound ver6:)g:sewoj skp0 -l hiy loosely to the nuclei and can move about freely within thekeiwh:6g :s -sl)0oj p material are referred to as

  A negatively charged rod is brought near one end of an unchargeo5, dz1bu ht94xzeu*ud metal bar. The end of the metal bar farthest from the charged rod will be z5be u 4tdxuu, 1o*9zhcharged

  Sphere A carries a net b r2 ,)(/ghziuij1lrbd( zm,r m b9.yspositive charge, and sphere B is neutral. They are placed near each other on an insulated table. mgi,,/bszy bb izl.(2 9r(u 1r)mjh rdSphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pot*gh :rb9mmv/ ;paiy p28u)a.s9 vdhl sitively?

  An originally neutral electroscope is briefly touched with a posi69 -9bmy8whqiaa2b u btively charged glass rod. The el8i9 6mua 2-hbq b9abwyectroscope

  An originally neutral electroscope is grounded briefly while a positively chn hzi-3mv esdyu0e 6(*arged glass rod is held near it. After the n(d syem3 evziu6-h0*glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separk 6jz s;e,rut8e-n1vjate. Then a negative object is brought near the electroscope, bu8nezsv1-rt,jek 6;j ut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated ta j yr..omn3 49civimb-.dee3cble. 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 td .i ov-ee. 3mb.mi4cyj9r3ncouch 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 Coulomb confxn2uwyme+4yf - 5wa:stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is p0tssse y*(.v larger in magnitudeyv.s0 ps(*t se than the second charge.

  Sphere A carries a net charge and sphere B is neutrx 39 o(h)ciglsq1cp +lal. They are placed near each other on an insulated tablihc1l(3cp9 gl) o+x sqe. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other witx.l*gngio1f7v p a( v.h a certain force. If the charges on both objects v7*fxl(1og p.i .vnag are doubled with no change in separation, the force between them

  Two charges are separated by a dis+2gz:v+g9 icp8 lkxm ztance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new zvg kz ip2+c:g l+9m8xmutual forces?

  Two charged objects attract eacswszs t6 wdtg-a*o y0v 3c6/u*h other with a force F. What happens to the force between them if one charge is doubled, the o0zg-u3/w*oad6scsvy wt s *6t ther 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 separated1.pierix6 -(qdg dc- x by a distance of 1.0 m. What happens to the magnitude of the force onp6 -r.e dcxiq1(-i dxg the proton if a second electron is placed next to the first electron?

  An electron and a proton are separ02/ e f(yfkggvated by a distance of 1.0 m. What happens to the magnitfgvegy 0/fk2( ude 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 disk*q3sw wdsle//czk 4 :tance 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 lkzd:kqe*swws 3c 4/ /the proton?

  A point charge of +Q is placed at the center of aa, 8w,43nolds9 +exf0 lwpghr 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 charg, n3+ lfpl8waw0dhegx ,4ro 9ses 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 o;q i4hh1ex3mnf an equilateral triangle. When a ;m n1hxqhi34 esecond 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 other vertices?

  Which of the following is not a vector 5t5j90o4vb ysdy7xiya z r)-a?

  At twice the distance from a point charge, the strength of the electric field+tm) jwed 8hh-

  Is it possible to have a zero electric field value between a nega9-cg2q9ks-(xchh eyltive and positive chargy2g hlc kh99e(sc--qxe along the line joining the two charges?

  Is it possible to have a zero electric field value between twyti dn9j/awm pu5).y/o positive charges along the line joinin mt/yupj/95dya n )w.ig the two charges?

  Electric field lines n g) fqblek(n+6t7f vj jyz2*9qear psitive point charges

  The electric field sa:c el0kx-n( s.22df*rpgp;6 eywbrxhown

  Can electric field lines /tojqp..8a( ngca x 2sintersect in free space?

  A solid block of metal in electrostatic equilibrium,n no kacs7yjw 2(hpvk) mp-)8 is placed in a uniform electric field. Give a statement anpvksnyw (2 kp )c78-ohm,j)concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diametn. 6 j7w(duhh:gi/nymers are each given the same charge, thj(/h .mh67nuinwg:y de electric field (E) midway between the center and the surface is

  A cubic block of aluminu9frr wqqqn:*+ m rests on a wooden table in a region where a uniform elen:+r9qr qq*fwctric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostativj84qc jinmov3 fo :v-xuz/ g*y,rxv312kh8sc equilibrium near an electric charge

  A positive point charge is encltp2 yrx -.vwv+t y/me)osed in a hollow metallic sphere that is grounded./rmwv2+.px)tvy yet - As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in statio l a0fm1((juzc equilibrium.

State Gauss's law.

  The charge carried by one es/ akca.bcs (j zr7j+3lectron 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 +2.0.xqcd x k5*t5d0 mC. How many more protons than electrons does this piecx5kd t5dx cq*.e of plastic have?

  What is the charge on 1 5x 8z1;uon4bzfhgg8ekg of protons?

  An atomic nucleus has ,c v8as)(p3z z:n fkkza charge 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 2.m 2/r*avc+taz0 and -4.0 mC, respectively. What is the magnitude of the electric force between t*aazc/r2v+m them?

  A 1.0-C charge is 15 m from a second charge, and the force between them i 2rd*sq,z,q:r)l yb r 5sv-ub bx8cd,is 1.0 N. What is the magnitude of the second chbqdic 2dvy-,5 r bl:rs,s zu8rbq,x*)arge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apartj2l-bjq.(w 6s+skt t k are they?

  The force between a z:(0e fi/p5u ov xiej3$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, iniv4qoqj6 5vmr mh.;;pv5 ) enfatially 2.0 cm apart, experience a 1.0-N force. If they are ) vf;prq n5qov;6evm4mjah5. moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point cyl t1b56q a2cjharges of 2.0 mC 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 the e1lq5bj2a6 cty lectrostatic force which acts on the charge at the origin?

  Three point charges are placed on the -o*ba)tn8i jz.qpy 9 ux-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 p.*b) ayq8 t9un ijzo-are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges (zx ln*0:ik 7 gl7tjkoare located 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 = -1.00 m. What is the magnitudein0t7z(x *7:goljlk k of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a sqviqp 7/k kv3,iuare, and a second point charge of -Q /,kkipi 7q3vv 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.xgjki d;)b,kiypt0 0; mzxx0*0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chi*k0y,0g0x ;dzx )t m;ij xkbparge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nCiqj71 ft6x8uec / ,jvv is 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 cha/ij8u j7v1e,qxc fv6trge?

  Three identical charges of 3.0x0z- kkil:h* *ese ox3 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forceekx3xkl* -z0o:e*i sh which acts on any one of the charges?

  Consider point charges of k:x8,q+uwrt p) ,+q xtllzm, n+Q and +4Q, 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 the elecxt,m,: lqt rp ,q +wn+xkul)8ztrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-Cj q;vzgeg0j*0 charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so th;eg0v0jz q j*ge net force on it is zero?

  Charge +2q is placed at the origin andy +.3of mj3crm charge -q is placed at x = 2a. Where can a third positive charge +q be placed so thay3c+3rfj m .omt the force on it is zero?

  A copper penny has a mass of 3.0 g. A total oigz(bauq:6te raqd2e +591dlf $4.0 \times 10^{12} \; electrons$ 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 fixed8qqpyl o 4dxm1us4 iucb79 -d/ proton some distance above it. How/s-u4 1 uclq8im4d9xy7 p odqb far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common :lx od/741 tqosyyku dddu mj;. b/:m/point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart otumd:uk/y:7xy1olmqs. d;d / j4 db/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 tby q 5polb;( ixdn2upkb 2q cq4b1,c55he magnitude of the electric field at ox 5b5d4bu byqc2b2nqpi qkl pc,(; 51a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distancej zgfcx4 ,6q,ono6u 5k of 1.50 m from a 50.fkun646q5gco j,,x oz0-nC charge?

  A 5.0-C charge is 10 m from a small test chargap)f :i5 hj*i9,ymsprypg +f2e. What is the magnitude of the electric field at the location of the test charge?ypi+5hs 2fpapi*rfy, )9 jg:m

  A 5.0-C charge is 10,yr tq3mh qq: zi-wq;s*: iof9 m from a small test charge. What is the direction of the elect i f*tqzs ,:rqq;o-q3myhiw:9ric field?

  A 5.0-C charge is 10 m from a small test charge. What isaq5en. ed , vpf730u6dn9alsp the magnitude of the force experienced by a 1.0 nC charge placedap3d6deu nq. l59 n,a0p7sfve at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distan /xay)f2 cev4tzo3q*g ce of 4.0 m. What is the electric field at a point midway between the two charge 32xtzgo*eq a4c/ f)yvs?

  A 5.0-mC charge is placed at the 0 cm mark of a 5xg 4pmppfaub 8ax*,2meter stick and a -4.0 mC charge is placed at the 50 cm mark.,xm84 f pp5xgapub2 *a What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anlr ju:qv piba ,10fh(vp c067yd a -4.0 mC charge is placed at the 50 cm mark.7 f :(,6uc vaplry0bhq1v0 pji At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3a62 *xl) fj w*6n pafg1bm7xyt.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwaal7gxfb*x*tm wp)j6 6y nf1a2y between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m n65xab( -g g i.et6nnh :ckvg85hrwv3. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the square.vgb t :xn enh( .r-ng83h665v5gcwaik

  Consider a square which is 1.0 m on a side. Charges are placed at the corners vbfu*u9w7 )zp of the square auwvb 9p* zf7)us 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 isrkb;mrbn/:(faov44*q hs f: g placed in a uniform electric field. What is the magnitude of this electric fi:;r4kgq/f o4mfbbah (s nr* v:eld?

  A particle with a charge of 4.0 mC has a massp0:;n uibr ;gr 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 field of 60c itrp1 x6i-o4sht9 o000 N/C pointing downward. What charge must be placed on the ball for it to be suspendit0t14x6-prsoh io 9ced?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is ply enywtk0.: 3iaced inside a uniform electric field, and is suspended against the force of gravity. What are the magnitudy0i:ykte wn. 3e and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. u*-j +h(zwdp jWhat is the magnitude of the electric field 5.0 cm fromdwzh( j *+-ujp the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargex(hykk 4 yek4,)peqc 71 oot 4dkme70x of 3.0 mC. What is the electric field 6.0 cm from the center of the sk mkxy d4ochee47yp)k (qt1e kx o04,7phere?