State the law of conseknx u1w.f: fc24rkn3 xrvation of electric charge.

  Is it possible for two ne 2wum8o; :pvbxgative charges to attract each other?

  Is it possible for a positive and a negative charge to ae2 c)njgaay ;x4 6mi;kdm,eh6ttract each other?

  A glass rod is rubbed wwv 8ewmus) z 1r/p+)a5 -v)iih tyscx9ith a piece of silk. During the process the glass rod acquires trxw)hcse 5uv8 1mp)vz/w)- yi+9a i sa positive charge and the silk

  A proton carries a

  The model of the atom 08c,betdd . ltshows a

  A neutral atom always uvdcectg(+shj:vl7 u n13v,- has

  An atom has more electr n u71ealmqd9s)cef(5ons than protons. The atom is

  Materials in which the electr/s5b-e8zgkcqyiuy *7w4 1wgwons are bound very tightly to the nuclei are referr wuwb/5 1k-y7q4es*wc8igy zged to as

  Materials in which the electrons are bound v3*zi d2s6dp,m i-hj raery loosely to the nuclei and can move about fr,j6hp* iiam2zr d3s -deely within the material are referred to as

  A negatively charged rod is broug9(hs j-uo-n8vfd2 v:rcouxy(g( z)fd ht near one end of an uncharged metal bar. The end of the metal bar far)jd-nfs(ufvor9z2 :d ho8 g -ucy( xv(thest from the charged rod will be charged

  Sphere A carries a net positive charge, and spheftn)a:9 avcg)dj0 e0h re B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touedtf0g 0h)9 c)n:va jached with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively?g8a,rv gw88v )tz-aocwn vsm)gzz3+/

  An originally neutral electroscope is briefly touched with a posi),w5)7a* edrepuc. f mmlqq85.rhh7mhg z 2n ytively charged glass r5u hmrplmyga )nhf,ewr hc)q*qe .8.zd m7725 od. The electroscope

  An originally neutral electroscope is grounded briefly whjj; ,a) ih-;y/vu i-+yb3linn -t uwmcile a positively charged glass rod is heldtv m;uly-hj-ic ,+/ia);ynj n -ubi w3 near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral w o:+id+blz,ztynm*: hw:, joelectroscope, and the leaves separate. Then a negative object is brought near the electroscopej d:btnoz l,w:, hz+ y:o+wim*, but does not touch it. What happens to the leaves?

  A large negatively charged jc6d.bxr lmz)cy h 2.-object is placed on an insulated table. A neutral metallic ball rolls straight towa -yx.z2 cbmcl)r.6hdjrd 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 negative object. What is the final charge on each ball?

  Charge is

  What are the units of th5is 2l)wdtvn 0e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larmn4bz3z bi vwoe(860y a*rw3rger in magnitude than the (3*o8ab4 vwni 3mrz60zy erbwsecond charge.

  Sphere A carries a net charge and spher8w3 (o(kzebz9vffyj 0e B is neutral. They are placed near each other on an insulated table. Which sv8zywo (z9kb(j f30f etatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. Iv; 3gsyy( *0tvvsnnm)f the charges on both objects are doubled with no change in separation, the force betweenv* ;3yvtmnvynsg 0)(s them

  Two charges are separated by a distance d and exeagckge a;bgd4 80q+j8cx/u.p t /d.ekrt mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?a0c.c /8g ;u +qekgke 8d4pt /jabxdg.

  Two charged objects attract each other with a force F.q 6v s1s(oijw. What happens to the force between them if one charge is doubled, the jqiss1o .vw (6other 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 h)cuf 7s5bsgus 2*1iux appens to the ma5x c2fuss)ub s*g i17ugnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are soomr *cy9rd)6 eparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second o6mc9*rdor )y electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. 4+1haf 5cn3gvkqb ,mm What happens to the vagf35 h1ck,q m 4bmn+size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the centa j/*rc0cxoe9er of a square. When a second point charge of -Q is placed at one of the square's corners, i acoj9/xc*e0rt 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 is pluzc w7z7a;lu. aced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of tz;7wua l.cuz 7he 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 vectw21fl6ix g-pjor?

  At twice the distance from a po5jzixfnp3 g9sn6 (ywqxz( t;2int charge, the strength of the electric field

  Is it possible to have a zero electric field value betwee;h(j co2qz3bj;l-dbsy2 k j.xez;e/vn a negative and positive charge along the line joining the two charghzqsj ;3jbjo.d(v c-ey;z; ekx2 b2/les?

  Is it possible to have a zero electric field value between two positig7k0 )i9e6j,o7fxb(m rld st0 gqauu 0ve charges along the line joining the two charg7ga mtk 60e()xs 9idoq70r lgf j0u,bues?

  Electric field lines near psicd,kdhfq 3/)e5fuo:0mc .+)idx8:x ky zbt nz tive point charges

  The electric field shslsg/7:ob 8cqfdzd*pb6+ a0 e own

  Can electric field lines inte;x, iap2 2--dq sodfbc/-bg+jmdt s3jrsect in free space?

  A solid block of metal in electrostatic equi.k ks9*zj*-ody hw9dclibrium is placed in a uniform electric field. Give a statement concerning the electric field in the o.dk9* wk* 9c-jyhdsz block's interior.

  If a solid metal sphere and a hollow metal sphere of ezwu*qiq;*4 fm wy+)gcqual diameters are each given thw 4ym) u;*qg+qfizc*we same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unifor-jwrsw*c w-,) m ca(uqm electric field is directed straight,wccw)j *uasq--m (wr upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibriutpgvnfo::l2- +xji 5yx9c r :lm near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thavoso.fmdq f4ph7i/: v.9s a7ue px 27s0g3vkxt is grounded. As compared to the case without the hollow sphere, the electric field at a point directlyx:/u0qs .smds 9e7 vo2 pgff4o7ki.7v3xvahp above the hollow sphere has

State three properties of conductors in static eqoo+fok5f(/g6 xqd9 eba u.z b2uilibrium.

State Gauss's law.

  The charge carried byzyun 9 y*,puss //xr4e 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 -e bnog7 9f7kzzc;*q xcharge of +2.00 mC. How many more protons than electrons does this piece of ploe7qc g zn-7;9z kfbx*astic have?

  What is the charge on tqaim9 z2*e+p 1 kg of protons?

  An atomic nucleus has ag y uy/ x+6ipx;t5uwo95 9yxid 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 valurxg ,10sqa(26tvmt;wr wof 7ves of 2.0 and -4.0 mC, respectively. What is thwtm v 6;2g,sox7 f0 1(rwrvaqte magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1wnr2d rp7ecx- * ett:pr87d7/ 4uixt l.0 N. What is the magnitude of the second chargent -w87p4t7 x:d*rxtpeie 7dl/2crru?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are thz9ml .8)rnwsv : yb1uuo1z*tqf;/geley?

  The force between a e7; 0q ucizv)x z((cl;rbu4eu$30 \; mC$ 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-Nw1*9 zx3cm4lv03 ntgv ej8ee j force. If they are moved to a new separation of 8.0 cm, what is the elec jnv4vwgxe9 lc8m jz03*t3ee1tric force between them?

  Three identical point chcm3bpg,:q( hkarges 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 electrostatic force which acts on the charge at the origik g(,qcp 3h:bmn?

  Three point charges are placed on the x-axi +.i,x* mjshcrs. 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 are the magnitude and direction of the electrostatic force which xj .m+,rsih c*acts on the charge at the origin?

  Three point charges are located at the following pd:s;hjm hr*(z ositions: Q1 = 2.00 mC at x = 1.00 m; Q2 =j;h* h dr(:smz 3.00 mC at 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 placed at the center of ac -s9hccxjwi) q wt3;nycd 6 +5kn;0wy 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 magnitude of the force that acts on the cen nd ) tsw5xkiycyc hwwcc3;;nj-90+q6ter 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 = -1.0d ;y*w. z(;tauchk-yc nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force ouy;k*z;wh -(tda. ycc n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3vud;cz f2 (;oe = 5.0 nC is at (0, 0). What is the direction ofd2c eu(z;o;v f the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC aroskv 70zj;xvzty0c ssxs*.0v:9rfj9 e placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostaticszvvss* r9cok9 xxjf:00 s0 v;jy7tz. force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sepdfyeawq351qk on- + k9arated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -k- nyk931 5 qfqwea+doQ such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the oybx 8l9grx-w .2 a0u vaa9hot,rigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it .y90 r ,x2a-t w8uox bgaa9vhlis zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where cadszu9 u7sf5i96a:rz vfi 5k a1n a third positive charge +q be placed so that the force on d k9s:65z7i 5 vziuas9ruff1ait is zero?

  A copper penny has a mass of 3.0 g. Age vq*s7u 5wuq 8efxa515q) kn 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 foro*fxusc ( vi2/ce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the protf*u/co2( vi xson?

  Two 0.20-g metal spheres are hung from a common p;f*;wa go vtaf 68 hd2lwqn+v+oint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle between the t;o6gf+ awt n 8l2vq*; wdf+havhreads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of the electric (6 ,yrz use8md xooi o975dvd2field at a diudx,dy vrod 9m ze765si(8o o2stance of 1.0 m from the nucleus?

  What are the magnitude and direction of the e9- iaxsqhqbij:,+2bskvr1d:w0bh4c uk w/ (flectric field at a distance of 1.50 m from a 50.0-nC char -j+bq w qsdx/u(0vbw92r khabki:ishf4c1,:ge?

  A 5.0-C charge is 10 m from a small test charge. What is mpxls;d x u 9(u5pz2ei4k8d(u the magnitude of the electric field at the(l ud 8 e9kxp4ix;5(2dupsumz location of the test charge?

  A 5.0-C charge is 10 m from a small qds8b k 3lz/v/test charge. What is the direction of the eledk 83/ /lvzsqbctric field?

  A 5.0-C charge is 10 m from a small;4nk dm 8yhe*.xo kam*.epys, test charge. What is the magnitude of the force experikp4;y ae8mx* mhdk,on s.y.*eenced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C zv/p:v,m f6 ows+iep8u)rn : vand are separated by a distance of 4.0 m. What iwv/, p)f:i vpz 6on8r:s emuv+s the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 c1c ap6f*bx/utv2vo7.sd rc,hm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric fi tb,v s1. ha*ox6furc/v2cp 7deld at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 q mhss)-px*gf 2dgt:) cm mark of a meter stick and a -4.0 mC charge is placed at the 2-*dssg) tfqx)g: p mh50 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. 26m3rs2uvm(e;0mycyfd ggut;g) 6zn What is the magnitude of the electric field at the ;vy 6m30g r2c;sdgutzgy u2( n6mef)mpoint midway between them?

  Three 3.0 mC charges are at j6(dgng s020remvz /ithe three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of j0 niz( mgs6drvg2/0ethe square.

  Consider a square which is 1.0 m on a side. Charges are p a v 5dnzmm4wx;tjp0m ;up/f-6laced at the corners of the squmm5v n;0-fwmt/zu ;j x a64dppare 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 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform electrq cy-*ws/kzle ba/*7mic field. What is thl-*s * kbwzey/ /qacm7e magnitude of this electric field?

  A particle with a charge of 4.0 mC hau1 v p 9(y(jv.45wsisogrk6x ns 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 iz2x e dke(pk-4n an electric field of 6000 N/C pointing down zpk4d2 exe(-kward. 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 b)ea(vgth6y :s all is placed inside a uniform electric field, and is suspended against the force a:6g()hstevy of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius neq0+ 91cxiq4s5a .i bg i7yyp10 cm carries a charge of +2.0 mC. What is the magnitude of the elensg9biq0 .ei y q4a5 icp7y+x1ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a nrk 3cl)a3b9p charge of 3.0 mC. What is the electric field 6.0 kl3)napb3 c9r cm from the center of the sphere?