State the law of conservation of electricg :a;hy+ j8pza1rxg rl 79rj)g charge.

  Is it possible for two negative charges to attract each p glhdewk,9gk(5r q*8;wb w q)/9flxp other?

  Is it possible for a posi+jel8r/(1 gbain c/svqj -7tztive and a negative charge to attract each other?

  A glass rod is rubbed with/z-w vijhz(ge i9+uy4 a piece of silk. During the process the glass rod acquires a positive charge j4zvg+z-ii/w9 uh ey( and the silk

  A proton carries a

  The model of the atom shows 37-sdsa-5qji de8e4 jgs +od ma

  A neutral atom always rr 8dtoi2;p/ihas

  An atom has more electrons than protons. The atom isl +h yelxlr.*7

  Materials in which the electrons areynwcogaqe;77) sxh )* bound very tightly to the nuclei are referred to ayne a swh*oqcx)77); gs

  Materials in which the electrons are bound very loosely to the nuclei and can mo4u5ys7b ;ri-vz/q 8lwq3 bbi kv/vi5;li8zsq 4ru7k3wyq- bbb e about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. q;ih-o u8wafo v .)o8f The end of the metal bar fa hf;)v.waqu-fioo o88rthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is at xtqm(qs0 0vkmd/i;dz0g 93w6lvo. neutral. They are placed near each other on an insulated table. Spd;vagv sq/.q0ok3 0iz 6 t9mxmtd0( wlhere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivb9 wma5d/;lsi ely?

  An originally neutral electroscope is briefly touched with a positivexom h3io+9 cy7e1na*v ffws- 6ly charged glass rod. Theoaf1x9nvf-e7+ y3 s6c w omi*h electroscope

  An originally neutral electroscope is grounded briefly while a positivelu,djmnh-(.3de- b vcdav.vq v 09 7v 98vceuxiy charged glas 3hmv -d,v8ucd j-.0aevxqv9c n.iv9ved(7 ubs rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, anr j/wl-5 qz;ywymx9tc 8)a /cpd the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?waj9q;l w/ rp8 yycz)m/-xtc5

  A large negatively charged object is placed on an insulq u+l r1nucuazy*c(:)ated 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 does not touch the negative object. At no time does either ball touch the negative object. Wha q :zlc)r uuc1yu+(a*nt is the final charge on each ball?

  Charge is

  What are the units of the Coulombovd s4 dw+s j-s)1a-eq3qom pe rf4z4/ constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. Thc gg,0-9g w0j:zkc /4j nfcck zi3pzi2e first charge is larger in magnitude than the second0 gcc :3jwkigz-2 n90/z4p jcf,czgki charge.

  Sphere A carries a net charge and spp2h(oaa+)j 2yoto rd 9t9x j/xg:ezg-here B is neutral. They are placed near each other on an i+h2tr(x/ae2xo goagj)o:d y- t9z p9jnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If 9 q d2ey-:av:l 1pf.glko5yekthe charges on both objects are doubled with no cha kd:fleykl:g e1o q .5vap92-ynge in separation, the force between them

  Two charges are separated by a distance d and exertcck3 m lkh)r;m1+i*vqj9) txt mutual attractive forces of F on each other. If the charges are separated by a disvm ;k3xmjc) t1qkict*r9lh) +tance of d/3, what are the new mutual forces?

  Two charged objects attract eachx7f 7 re:7ocr4niqz4v other with a force F. What happens to the force between them if one o7qfi4e 7rx7c :r4nz vcharge is doubled, the other 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 f i(htee*-k m8agtme)ym/r/as,( dw3 to t fm(td wger)m-yat/m(ha*es8 ,ik/ 3e he magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapk/. g3kmby);i e f;hlvpens to the magnitude oy 3 vmlk; b)gkf;eh/.if 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 distance of 1.0 m. What happens t2o b1c/z +aueqo the size of the force on the proton if the electron is moved oa/+qcb1u2 ze 0.50 m closer to the proton?

  A point charge of +Q is placed at the cp /i*vx dnkfh.208 wjg- hw6maenter 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 av.mwdin*/f 0hk-gp ja 82wx6ht 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 of an equi1s 3*lu ihuibrzj8lbvl999-jlateral 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 of9hs9ub3 rv-98bj* ii lj1ulz l 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 vehl-t7*x y6axw0j 6u* wx p8cjcctor?

  At twice the distance fyw,vl.3 eeg7 prom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value ey:mf mx124r, d cj5cobetween a negative and positive charge along the line jmoc1,r :f x4yc5 jed2moining the two charges?

  Is it possible to have a zero electric field vala5 ahv jf,aw7:ue between two positive charges along the hfj,v : wa7aa5line joining the two charges?

  Electric field lines /fujv/dr oe+jxt +06n.qx7j.wag8j a near psitive point charges

  The electric field sh9 - 7cqhqxdbc;own

  Can electric field lines int3 lrjg eff.1wo o.bj-;ersect in free space?

  A solid block of metal in electrostatic equilibrium is plac9zpk(0h nccp+ ed in a uniform electric field. Give a statement concerning the electric field in the block's inc(p 09p+ khzncterior.

  If a solid metal sphere oc5t u6mz gc708v0 wccand a hollow metal sphere of equal diameters are each given the same cha8c ozc 60gcv 7u5wmct0rge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regio5z0 gktsdacv8fuc+ 0.y61dbfn where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's s0d kt 06b5fu1dg8a c+.cy zfvtop surface?

  If a conductor is in electrostatic equilibrium near an electric char:(noqpdg+,k3:k hllkdvi* k6 ge

  A positive point charge is enclosed in a hollow metallic sphere tu0pl-fkda id5o+b 4;d hat is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere hap ufo;a-d0l k5dd4+i bs

State three properties of2gsmz5zu2m*z p l6fn + conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is l/g or pdz9:r8$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has aa xw2e0 lpw7vvhou * n(zd3l33j uq//p net charge of +2.00 mC. How many more protons than ele3vw h2 n(7 l3a 30uzx/jd pv/*wqpleuoctrons does this piece of plastic have?

  What is the charge on 1 kg of protvq3n3j+jn tti xc07i2 ons?

  An atomic nucleus has a chaxj37(c o cnkc/rge 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 20ypgdsg7b8 0d.0 and -4.0 mC, respectively.8gsdp7b dg00y What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charg da 2-iuevck4y: 2d9qle, and the force between them is 1.0 N. What is the magnitude of the svud -9 2l:4kiy2qcdea econd charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howdj/3doy3 jl;hk w0;jx c9 pybl1.kh c58su g9i far apart are they?

  The force between a w e3px7k +dx2 z3 qn0doq0q9zz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyw0g1 4xy/ksz z 2.0 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 betweezz xygs10k 4/wn them?

  Three identical point charges of 2.0 mC are placed on the x-axi e* ed;o6fq jbt*j4dd*s. 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 e*ddq;j * *fote4d6 jband 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 +2.0 mC is placew;9w)dcb5lac* j8h ;isl to3 nd at the origin, -2.0 m C to the right at x = 50 cm jhas9d tw 8;i)o *bcn;5llc3w, 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 positio bb/ fcif ax3pj .32d(b410pspge2p hjns: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m2ba gpj(031./fbf 4ciepp2dxb hs3pjC 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 a square, and a seconn.h: r adc 7dyctkfa77x diz4,t9g.q,d point charge of -Q is placed at the upper-left corner. It is obse 7a.t hx97a 7tdq:ydkgn,z cci ,.df4rrved 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 m); Q3 = 5.0 nC id8eimp+4 koj ebe 8,upvj5v)4 s at (0, 0). What is the magnipje k4) e+pv mbueo,84 jd85vitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =zke (zdb. )n1u dj-+uj,lp:(xd0 fwlh -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net f(uj-ll,:)p1zbhnu (wdz+d 0e . fkd jxorce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an hro2ernpe ms nue3kx/*b, s9nt 5+6j2equilateral tr52jen/hb ,me9x2urs t rn+3p ek*os 6niangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point chargr4ied8xn-t x1c5iy 9,knjr(o es of +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 tyixjier1t584 , kd x(n o9r-cnhat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orl/ q5e0e)jcxg igin 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 x)5gl0ee cqj/it is zero?

  Charge +2q is placed at the origin ga3 rz-(u :1jr;atnbjand charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is ze nr;-3jt(j :bzarg 1auro?

  A copper penny has a mass of 3.0 g. vq6pqhxprn)nny 07q: 1( 5ja1/tozzb 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 gravity by the attracti85gp. -w didvs9-k ehfm:9ab ron of a fixed proton some distance above it. How far above the electron is bgvpw-f d9em9i-: ask.d58rh the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting1j;c6q m)ma le threads which are 30 cm long. Both are given identmlcjma 6;q e)1ical 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 cl w4dgy ;o3e;qi g2,1libng4z harge of +40e. What is the magnitude of the electric field aigl,g g b 4qnl;43yw ei;z2o1dt a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance:ej96c33a . rjga 2sxxm 3jlbo of 1.50 m from a 5a2 ajsj.go9j e 3rxcxl:3m6 b30.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What isz5w tynnam1 lhr-(-;9 pn teq9 the magnitude of the electric field at the location of the test char9n1plwt n;t-5mnz-9ya( rehqge?

  A 5.0-C charge is 10 m from a small ycp 30r ))opfv .6u*tokdx lg*test charge. What is the direction of the electric f.x*uf0 ) ykdtl 3ro po6gvpc)*ield?

  A 5.0-C charge is 10 m from a small test charge. 4dzhhl w1r8 ar(tfua * 9bgbp+b*8 pf8What is the magnitude of the force experienced by aa fp g*wabufp(lr1h8 +*db 48 b89zrth 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distanc6kp3u+)obe:jd apz /j e of 4.0 m. What is the electric field at a point midway between) bpapju6+ed j ko3z:/ the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC charm+, qg: mi,rb pi8pd tdn7/p/wge is placed at thegm ,87nd,p//ptwdp:iq bi+ r m 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm w.*s .+iizfn2,ki t uimark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. .+2i wfii*stu.i, nkzAt 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 o4zrip 5fddh* dx79s4placed at x = 0 and x = 0.20 m. What is the magnitude of the electrf5orz9 hpdd s* xid447ic field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a squpkjrt t*(wc7f (hu/;i are of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric fic( hrjk7t /uwf*i(p; teld at the center of the square.

  Consider a square which is 1.0 m on a sidey0 *xavd r0dn1. 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 electria dx0* 0yd1vnrc field at the square's center?

  A force of 10 N acts-g*hev 6ok ci;xu84dg on a charge of 5.0 mC when it is placed in a uniform electric fidoxe-*c8hv6k ;g4 u gield. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC0ky 604ve a nr+fmnp.v 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 qs7k zuq6p5n,0y 6r vvelectric field of 6000 N/C pointing downward. What charge must be place 0kq pznq66vuy,r5 vs7d on the ball for it to be suspended?

  A foam ball of mass 0.150 g carrizz(hw)brh) fz0i5 t4 ses a charge of -2.00 nC. The ball is placed inside a u zt(w5)zbsh0r4 zf)hi niform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0fwsw t vj1h / 0erl3) migr6pbz6k1*+q mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?wrqek0bhw3g1 ) rlf*+st/mpvi1 z6 j6

  A metal sphere of radius 2.0 cm carries a chm2f hjs vun:p7s5e+.*tvpvx/arge of 3.0 mC. What is the electric field 6.0 cm from the center of the +f.sts 5juv7em* h/v v2pp: nxsphere?