State the law of conservation of electrtw; ec+x7kn3o ic charge.

  Is it possible for twoe 2(jjnd ;h(e dijf*e) negative charges to attract each other?

  Is it possible for a pos7.v8x2pygwt+ /. pb+8lpaodui b- atyitive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proces3u*eci *f 7vlns the glass rod acquires a positive charge a fi7ecuv3ln**nd the silk

  A proton carries a

  The model of the atom shows+b3md-ydbkg/x cy)i5 a

  A neutral atom alway8cyj q2)q*jsus has

  An atom has more electrons than protons. n 0w2 w20yr:xuj-r gcsThe atom is

  Materials in which the electrons agd pu,uoz-f)i7q3j ,cfu w14 kre bound very tightly to the nuclei are referr-cw ik)pjufdz ugu1fq43 ,o7,ed to as

  Materials in which the electrons are bound very loosely to the nuclei and can *eq d3x1b)sri move about freely within the matexr*de) qb3si 1rial are referred to as

  A negatively charged rod is brought near o1 sceye/gq,ifql0 6f8ne end of an uncharged metal bar. The end of the metal bar farthest from the c0l/if e1 yc6ge,q8sqfharged rod will be charged

  Sphere A carries a net positive charge, an()s7 b1)5i qii)apiun5mrag4irfgx0d sphere B is neutral. They are placed near each other on an insu0 q)rixni(irib iua4gmg5fs)p a7)1 5 lated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively2 k: z:*myrpiqta65aw 68x uzv charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touch:t 7edc 4a4zvqed with a positively charged glass rod. The electros4zc7aq t:e4 vdcope

  An originally neutral electroscope is grounded brieflyzm( b0)g*uznxsp nz18 while a positively charged glass rod is held near it. After the gnumg z xs081zpn(b*z) lass rod is removed, the electroscope

  A positive object touches a sb+ k/oljxsh.243cns neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does +ljssb/oc.k4 nhs 23xnot touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neuq sdpy/pw;nzhwwk96qv7y /* 2tral metallic ball rolls straight toward the object, but stops before it touches it. A second sdw*qwkn y p;q 6hzp/wyv79/2neutral 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 thulg-e,6dzo;ikf l r/2e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separat;0)ykipt 2mmwt ,ykh9 p.bg 0ked by a distance d. The first charge is larger in magnp)y00h,2t pbk kwm 9k.yt;igmitude than the second charge.

  Sphere A carries a net charge a)y0 8a7adyhr8etj f kep hi*yagax:3n*: :og2nd sphere B is neutral. They are placed near each other on an insulated table. Which state3kn:g ag:a jfrdtyi *2ah*e:ha0yx) 8e7p8y oment best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the htg2p/re,t -qcharges on botq2e-g/p,t thr h objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d.a .p 8gpk:.jnp6t sda and exert mutual attractive forces of F on each other. If the charges ap :. dt.p8angs.6ajpk re separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to thap2nq s*3 /eu/tem *cee force between them if one charge is doubled, the otqas/*eu c*t32/nepe mher 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 distance of 1.0 m. What happens tos 6me.duj9w6d the magnitude of the force on the proton if a second electron is pla.j m9d ws6edu6ced next to the first electron?

  An electron and a proton aw+qf90i dglhu r8;(8 xyc td.wre separated by a distance of 1.0 m. What happens to the magnitude of the force on the9(. w+wyf;d0qdht l8u xr8cgi first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What sde6 ulzv 4x+vhdu/(9happens to the size of the force on the proton if the electron is moved 0.50 m czu9vv/de( ld6 4hus x+loser to the proton?

  A point charge of +Q is placed at the 2j 1fw 2 ua2gpd 7brkk.*alv7dcenter 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 other three corners 17dpfa2vbdua l272*kwg krj. 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 equilai2j9un ;xbrl9 teral 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 thi;u9b 9x2r ilnjrd charge of +Q placed at one of the other vertices?

  Which of the following is not a vector uerk;8 y3-eqepotkg1ft;3 9e?

  At twice the distance from a point cswkztd .2s+anh* 9 g2b/g eog:harge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatiw-3-x9yc b v4qugsdq3 nga96gve and positive charge along the line joining tv-3xun 9aq qy-g96g 4g3sdwbche two charges?

  Is it possible to have a zero electric fie95qznw;vdo*o2h 7l: pb3r j lfld value between two positive charges along the line joining to;qn:b3*opvf2 d5ll9 rj7wh zhe two charges?

  Electric field lines near psitive polu oy*e)l *, tf-usup;int charges

  The electric field shoyn02pj r nd2r6wn

  Can electric field lines intersect in free sp j0 pfn*ox2d5m2ip 36iw5bqk sace?

  A solid block of metal in electrostatic equilibru1vtst 52bi;vqnn 77x ium is placed in a uniform electric field. Give a statement conc2 7nsb ;vv57inuxqt 1terning the electric field in the block's interior.

  If a solid metal spher(joq6/ yr2 bocu,kef5e and a hollow metal sphere of equal diameters are each given the same charge, the electric field fc ,o /52qbrk(y6oeju(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unij--spudu-h s3 ;ygaz 0 +mm,cdform electric field ihdz u -m 0j- p-dac,g+yssu;3ms directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium nearnd( zy o1)v6jb (/ekbr0rfec3 an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is dtnwzp+7y 1a --hksg7 grounded. As compared to the case without the hollow sphere, the electric field at a point kd7 -+-p7yg hznas w1tdirectly above the hollow sphere has

State three properties9h zymd24xr0 b of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one v(6,nssnc w5:hi )bbrelectron 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 e4z b.p ne5,t 9coh0vthq)c a7of +2.00 mC. How many more protons than electrons doe45 e, accb9p.z qtv70heo)nths this piece of plastic have?

  What is the charge on 1 kg of pru iz7, bb+ hda2 dq)g6cb7;b7h cqk)n8a s5jsjotons?

  An atomic nucleus has a c,chh ps7 v: )9r5zrrbmharge 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 sk3lcav -8tq 5cm, have charge values of 2.0 and -4.0 mC, res3lq 5vka-8ts cpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forceml 3jwabjh8 m(o2; 7zw between them is 1.0 N. waz(8;m73o lwj h2bj m What is the magnitude of the second charge?

  Two 1.0-C charges have a force betwe09gr m dpb6lwa;6e:fa4i314kdywdro )1lq nl en them of 1.0 N. How far apart are they?

  The force between a 0s* q6pvg2llw zl,*uu$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.2jpdofmb9 nj5d io.-( 8rmx/r 0 cm apart, experience a 1.0-N force. If they are movox-j 5jbdn. m9mdp/i 2f(o r8red to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. h 4hmu zi eo m+(,bfsxy(krug5m.t052 The first charge is at the origin, the second to the right at x = 50 cm, and the third is .e k h25o(zmfux(tuis 5,mh+b04ymrgat 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 tliwlsq5 *agov6an-)5o 3-up charge of +2.0 mC is placed at the origin,)- 35u plnivoa*- 5oqstwa g6l -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 the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2up /a09d dl/hn.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 n/0pu/ahdd 9lthe force on the 3.00-mC charge?

  A point charge of +Q is placed at the js6)4 mjka)no;(gizupb2 p, m center of a square, and a second point charge of -Q is p)(pb2 j4 );az, 6um pjimonskglaced 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 is6xl l+ gktxp0. at (0, 0.10 m); Q3 = 5.0 nC is at (0,k tp+ lx6gx.0l 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 =j:oa ,8eokm 1s -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the8aoj osk: 1e,m 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equ), / ebnzc;ytc t)(pyoilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of thon ; yctcy/),(ze p)bte charges?

  Consider point charges of +Q and +4Q, which are separated bym ujmvn4n x, 7;pob-)c 3.0 m. At what point, on a line between the two charges, would it be ponb)n,mx;4 v cmjpuo7 -ssible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at t6 /:eqcepd-hr he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be place/ phe6c:e r-dqd so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qy,)c-va4yb f6;y+4 sy t mqi45 otrrgg is placed at x = 2a. Where can a third positive charge +q be placed so that the force yyar t+4-q g4,y6v)m i;fc4bgty 5rsoon it is zero?

  A copper penny has a massm09v8 t;/zfbw )r*c0swt olf s of 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 gravityiuil;ld.sqx c 02gb7 ko:.n4g by the attraction of a fixed proton some distance above it. How far above the elec i70 gl;xcg q.ku.s4ld nb:io2tron is the proton?

  Two 0.20-g metal spheres are hung from a common pointi:u0e; nsc ;7i* jeibmickz3) by nonconducting threads which are 30 cm long. i;;zb sc 3 iije)kiun0e*:c 7mBoth are given 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 chargd.i5n3dmg ,wbb- y- mue of +40e. What is the magnitude of the electric field at a distance of 1.0 m from dw5ub3.i b-- g,ymdmn the nucleus?

  What are the magnitude and direction of the electric field at a distance of4 g9l-jiuvfaf 77bw/u 1.50 m from a 50.0-vu9 /7i bgju74 f-lafwnC charge?

  A 5.0-C charge is 10 m from a small test chap49oka 5e n4pyrge. What is the magnitude of the el 9ypo 45akn4epectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of thek71x9)o chyt) yt eqj9 electrieoqhy)9 k7yc) x t9jt1c field?

  A 5.0-C charge is 10 m from a small test charge. What is the maguy tcbfvg+p:/ fyg/h o4(-n (hnitude of the force experienced by a 1.0 nC charge placed at the tv/: y / hfb(fy4ghg +p(ncuo-location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distahl1js+ c(dkwzz6j 1* rnce of 4.0 m. What is the electric field zj1z6 h+ck rj(s*w1l dat a point midway between the two charges?

  A 5.0-mC charge is placen3u: d- )mzgb nq. /6vwwot6ymd 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 field a)yg tqmu6w3z nm .o-:/nvdwb 6t the 30 cm mark?

  A 5.0-mC charge is placed a aaic:7;3w xrcq;d l(qt the 0 cm mark of a meter stick and a -4.0 mC charge is placed dlxara;3ci; qw( :qc7 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 mC are placed at x = 0 and x = 0.20 m. Wh- 76sznngq(nj at is the magnitun nq-js z6n7(gde of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50v,yfm) dym 5u33oh6sa/5 uwz)7hczmo m. The last corner is occupied by a -3.0 mC charge. Fi u/6 5hu,am3wzy3o5 m)yfd7svc mh)oznd the electric field at the center of the square.

  Consider a square which is 1.0 m on a )w3-n qp zntu/ ,qm 0 yq3virexz4j+v: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 ele4 t, quv)z+v-p 3qi/3xr ynzjn0m:eq wctric field at the square's center?

  A force of 10 N acts on a charge oftbr1, p b/ moi2-r+yk (uhthc3 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elecror pu,+(1h k2/mh-ci3tbtbytric field?

  A particle with a charge of 4./at *)*puryzh0 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 ec3h xmj,9ek27n ( bvvzlectric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to b(cb9kvv,3 hmn jxez27e suspended?

  A foam ball of mass 0.150 g carries a cnad,4r f,wl7okpw3d1p 7ag:p harge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force opowg3:r,7d1npw , k da 74fplaf gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ofyh55 6uqsdqbhctc,3 nrfu)/5z/a4rd7 /uvfg +2.0 mC. What is the magnitude of the elq uc5vf,3yhb46arf)nr5tgcz/5u 7dq /dsh u /ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radikw7hg bk;m1m2k 4l/hgus 2.0 cm carries a charge of 3.0 mC. What is the electric fik ;/2 whh147bggkml kmeld 6.0 cm from the center of the sphere?