State the law of conservationiw kfq4pm wd26 ef2m2n nv(+cx5t/0xr of electric charge.

  Is it possible for two negative charges to attract each o v5uv7zu2sg3o)n7t leh v2:sather?

  Is it possible for a positive and a negative charrdx5g,fsl:5kv rr-:;k ri5 gvge to attract each other?

  A glass rod is rubbed with a piece of silk. During the p)3afd)rp zj5t,;a amxrocess the glass rod acquires a positrtpx3, damj)za af5;)ive charge and the silk

  A proton carries a

  The model of the atom showp6fznvzp, c *k*7i*agsqo2 )h s a

  A neutral atom always ha3 zu (kmwdu/-ps-zb12wmi k; as

  An atom has more electrons th49 +2-aj mh1ijhjmep ran protons. The atom is

  Materials in which the electron86h kft,r ;nwfs are bound very tightly to the nuclei are referred to ; ,thwrn8kf6f as

  Materials in which the electrons are bound ve)4kjv)a9 f qwpux -/p5writycis :, -ory loosely to the nuclei and can move about freely within- yora5spxqij )wk/fvi,pt -49 w:) cu the material are referred to as

  A negatively charged rod is brought near one end of an a.)gt (rz g(ol 3de 7c3s8ojqbuncharged metal bar. The end of the metal bar farthest f 7gsloo8) r33zdbqgcjta .((e rom the charged rod will be charged

  Sphere A carries a net positive charge, and spherepq:9 2t bq hrw:1s(5vmxw yss* B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wirewsrms1bvq x2t95:sq *w:(phy that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electros8piw7qc2p tk+i((v/ syinyx 4cope positively?

  An originally neutral electroscope is briefl /r9jbqhq8+ itc24 xa kcfb.n0y touched with a positively charged glass rocknb. f2tx0hi 4/8jbaqrq +9cd. The electroscope

  An originally neutral electroscopej+z/1ig 6ox yn is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the el16g/oy zx+i njectroscope

  A positive object touches a neutral electroscope, and the leaves separat umg2i8sy:l9 dc4; nque. Then a negative:;iy42dqguncu m8ls 9 object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is ogc r),6l 2zkz2ie f9i:)fexeplaced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metac2,ki62eo i9)l ff:zeg )erxzllic 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 Coumzxe + r0wrk1;m1svoy5n )m6olomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d.*shh+yb.0l ne 9lgm r*,red4l The first charge is larger in masl er gly0.,rm9+*hnh*e4bldgnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed -p2:qptini) o near each other on an insulated table. Which statement best describes the electrostatic force between )n-pqi i2top:them?

  Two charged objects attract each oth aj6/icibwkruyx8ga4s91e 7l 33*e m qer with a certain force. If the charges on both objects are dy ie 6a* r/9qsa14xl3 c7igb3w8umj keoubled with no change in separation, the force between them

  Two charges are separs guyw8 mvq;hw z8jum.5;(4(c tyhsh 4ated by a distance d and exert mutual attractive forces of F on each otherys vg(t(huj.su4m8q ;zw 8cw5 hymh;4. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract ehp*9xqu,;b ix +a,cz kach 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 be +qxp,,xi;kz h*a9ubctween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton f5)*lqq.ttb lare separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to ql). lbf *tt5qthe first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happen)i kjf 7 aks w2r8v62 h3,ns3ndhxemm9s to the magnitude of the force on the first electron if a second electron is placed nexf6 k332 sn hiw)j, khas2md7rm8 9vnext to the proton?

  An electron and a proton are sepd78; n hh/tnc w/alj)t/p,tfaarated 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 closefa)h8 /chwad ;7n//nt,lptjt r to the proton?

  A point charge of +Q is placedp +(ojdy0)8 yvb-etsp at the center of a square. When a second point charge of -Q is placed atvpb-s e+y p8y0)j d(ot 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 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 i0bk0 /9qrafx9 x1a uyjs placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electro /0aq0 byxa 9jkurf9x1static 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 followinm )w pcg42ls *el9y4rkg is not a vector?

  At twice the distance from a point charge, the strength of the el p civjzxp )o+ ktonk*qw.5+ka;m512eectric field

  Is it possible to have a zero electric field value between a negativ9 jxu8pr3l9/;zpj whbe and positive c9j83zlxbuw/j h rp 9p;harge along the line joining the two charges?

  Is it possible to have a zero elz9,rnu*awzhywn n3zc .9: 61ycm.yacectric field value between two positive charges along the line joining th*.3uz waczc9nn:zc1wy.m96y h ayn , re two charges?

  Electric field lines near 5rauzwv;)wzx3* z07 nvy yipn85t/zy psitive point charges

  The electric field shrd+ z2y j;zygk87pd6px /l, wmown

  Can electric field lines intersect in free sp, k:m(7gn sr5q u/bbmkace?

  A solid block of metal in electrostatic equilibrium is placed in a uniformjs-kg yk+ 4ts8 electric field. Give a statement concerning the electric field in the block's interiorg4-+jk8ss kyt .

  If a solid metal sphere and a hollow metal sphern+1t g b nv2ym v(aa+5z2ujm8;qlm.fne of equal diameters are each given the same charge, the electric field (E) midway between the center and thz12+.g vnj fnuabm+2ln85t q;m (vmyae surface is

  A cubic block of aluminum rests+m 7dvuw +zlc/iqc8 3xwu7se+ on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's toplmc3 vxei+q uzwwud+/s c7 87+ surface?

  If a conductor is in electrhl: /ls nn6g hj9an+7pd+axpiv h6(8 wostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallid oez5**qt zh y2+p1qoc9+)pp k)rhsgc sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the 9gso* y dehz++r)tpchk zqp1)*2po5qhollow sphere has

State three properties of cow /s:ie:/)w- ufpwtkyn ) n9p2ce nmd0nductors in static equilibrium.

State Gauss's law.

  The charge carried by one electu2*4 uuo: ccsiron 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 manyv i 5:jdb3vx p7bl;rq6: v3epp more protons than electrons does this piecebpp jv:db:7rvlx ;3i3vq65 pe of plastic have?

  What is the charge on 1 kg of protoh q16jf,ak frr1 ybt.+ns?

  An atomic nucleus has a0rd lz d, ke7sd6,j;+v-r4uj u2c jnow 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 2.0 and -1b:.bl evz ta0.ci,ok 4.0 mC, respectively. What is the magnitude of the electric force betweba :b0t.i,el1okv. cz en them?

  A 1.0-C charge is 15 m from a second chy( u b1x7l:t44tyzwsvj3jaz 8arge, and the force between them is 1.0 N. What is the magnitude of the second chargx l71(y jbtszvyjwzt3u 448a :e?

  Two 1.0-C charges have a force betwad* m21t1 eqkieen them of 1.0 N. How far apart are they?

  The force between a xnx6er;-8v i:jqvgn3 i tilck*0y ,v 0$30 \; mC$ 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. Ife8r3 e+ mk9p) wzxzoy2k2v-ww they are moved to a new separation of 8.0 cm, what is the electric force bmer-vo3z zp2 yxwe8)k+kw9 w2etween them?

  Three identical point charges of kk9b jzp,fy iz+ g hn+9.2pqa,2.0 mC are placed on the x-axis. The first charge is at the gb p 9 akj+z+,ykh,.fzpq29niorigin, 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 origin?

  Three point charges are placed on the x-axis. A charge of ++ l5;vg/c rghq t7ddt(2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, t5hrq tglv /+c(d; d7gand +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 posio0 hrvymy-7m+7xa. 3v rjx m5mtions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC a-mr m05yr mhjv7aov mx7x. y3+t x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is o2c- wf)y4os) gkr+ 8w(qvfyc placed at the center of a square, and a second point charge 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 mag4 )cyvkr2yfc ow)g+8 fs (wo-qnitude 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 =4qb eny,hd j) bq5::qt 5.0 nC is at (0, 0).5:y4q )t bb qje:,dhqn 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 = -1.0 nC is atk.uj 8f : 8qf/vjpap2x (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). 8kuj. :qa/fp xjv p8f2What is the direction of the net force on the 5.0 nC charge?

  Three identical chargesg1 trubo6c g gnu;.ltd l2(y 3536 b)oxgr0isu of 3.0 mC 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 charg t g 2r)1lxuibyrgdus3gnou50g (o ;cl6b 6t.3es?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. c*;s54cfp pkn At what point, on a line between the two charges, would it4*c; kcfp ps5n 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 at x = 4.0 m. W5yxr *; cih;ydhere on the x-axis can a third charge be placed so the net force on it ;hd yrc;5xi*yis zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Whe c37eji 4dwnelfr.59d lt 3:swre can a third positive charge +q be placed so that thretwenic ldj .9f:d3 w 3l475se force on it is zero?

  A copper penny has a mass of 3.01xh1hf )p*sa q 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 ; )-v/gddw/,dgt ;04- rou hrivfxlkqforce of gravity by the attraction of a fixed proton some distance above it. / -f ; );0q,dvv4/htid-gkwrgud xorlHow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common26ihh4s.wk zi w4f-gh point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic rihisgwf6 .4 -hhw2 k4zepulsion 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 the magnitude: mzku: 1gnee4 of the electric field at a distance u egnez4m :k:1of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.52 gn1h cxb(ac;s36+ixj z)yud0 m from a 5zx2gjdn c buai3)(chys16; +x0.0-nC charge?

  A 5.0-C charge is 10 m from a small test char1)-d nygk td)yge. What is the magnitude of the electric field at the locationy)y1kgd)t-d n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the v0.6pg m rfo;qr:f*w/efq / mielectric field?/mif0v qorm /f6e*fpqg ;:w.r

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofrgye/vmvrt;g4pfsy j7r897 6(doz-amng 7;i the force experienced by a 1.0 nC charge placed at the pvzf (ned6yr7t 7vy o7rg4 mm/a8gj;r;gs9- ilocation of the test charge?

  Two point charges each have a value of 3.0 C and a6 9sd2imnt)sare separated by a distance of 4.0 m. What is the electric field at a point midwayn6msai t2) s9d between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a 23v 4s)fvirifp-ckp6 meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at th6i v43f fkc iv2ps)pr-e 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a0bpnyud d p1qwg 9e/.- meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charge.d0d u-enb qwyp91/gp s is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 *9zv:*p1wqq9uz.nhs /r:hn hkq q3a band x = 0.20 m. What is the magnitude of the electric field at the zuw.*rnah9p9q v 3 :nqhb /skhq* :1qzpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.5u/rglkbk )y+y4/i f.x0 m. The last corner is occupied by a -3.0 mC charge. Find 4ky.lug/ +xykfi b/ )rthe electric field at the center of the square.

  Consider a square which is 1.tc(syb,b8v;: ksn 4 mn0 m on a 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 magnitubybskc, m(;8s nnv:t4 de 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 placed in a unz26 na /.jdd,nr tjm(iiform electric ./ji6 d d, zart(2jnmnfield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 7escfud*/oxmk4o7ll , w.m2a 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 elecp (d z4rdf2 3*(zjzs-5 yj4aqukhxl* atric field of 6000 N/C pointing downward. What charge must dr jkp(a szx 4*h4yz -5jf ulq(2d3*azbe placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -21:fm sxd4nl kvfw/3t+l89sd j.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What arsdk3 vd /9j1 8+swxn:ftlfl 4me the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2. sg 9cxc+ksilwlw 2,) .wss-4e0 mC. What is the magnitude of ts.xlk9- si)w+lecww2gcss, 4he electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. p ip:m*o,a(fa 4+ fsj5+f8gxmcy3q ev 47zgmyWhat is the electric field 6.0 cm from the center of the sph:5 +4oecf(mmm*,ppf yzxa qa+ifgv ygs43j78 ere?