State the law of conservation of electric cjly x r(o,:.u7 oueawtzb7e) -harge.

  Is it possible for two negative charges to attract eac meu o:,(3 ;93epdg5mqncrofsh other?

  Is it possible for a positive and a negative charge to attract eac1/cn4bab /m w4gyg.f th other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod aze )w0d 1. g6n3plos3zxp,x68 ho yedicquires a pose3egpp, s30yoi166 xzno )dh8wx.zdlitive charge and the silk

  A proton carries a

  The model of the atom show9ufh(ucft/ /*, x ctbws(/s 4xw:uf dis a

  A neutral atom always ha3q 3 u0:d,khefbo4:orkst ud/s

  An atom has more electrofj:1c6 gi*n jfns than protons. The atom is

  Materials in which the electrons are boun/:7e 7ajdkj(9w)v-vg gp cxthd very tightly to the nuclei are referred tdv-: e j)w/7 tpx(7gcvhg k9ajo as

  Materials in which the electrons aregj1n2) )i0y t7lmjc so bound very loosely to the nuclei and can move about freely wi0osm)jtni1jl y )gc2 7thin the material are referred to as

  A negatively charged rod iqmjq823nhy6 j s brought near one end of an uncharged metal bar. The end of the metal bar farthest from the ch6m3y2jq njq8harged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ns3w1a sl7 -qgoeutral. They are placed near each other on an insulated table. S731lg -q awossphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope pxgy qoy4rl :992)crge ositively?

  An originally neutral electroscope is briefly touched with a u1x(:pbzd * 42wtc ojhpositively charged glass rododp1:2(zcw tbjxu h4 *. The electroscope

  An originally neutral electroscope is grounded briefly ksrsb 2 isbz3*lwl/ 8,9u9dijwhile a positively charged glass rod is h/izubjl kl 9*92 3rsi,ssdb8weld near it. After the glass rod is removed, the electroscope

  A positive object touches ah-w ,d0 krz+tt neutral electroscope, and the leaves separate. Then a negative object is brought near the electrosc h0 td,kzr+wt-ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placue cfua3cb+.rw .2; 7hno x)eeed on an insulated 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 ob2+b;.e aheu )e7n3 urwco.c xfject. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb coj*pajw,z g,s26) przlnstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fib 4a ij/nzm)jrv+9:en:eymr 9rst charge is larger in magnitude than the sec 4 9jminee/y:zvmr j b:9r+na)ond charge.

  Sphere A carries a net charge and sphere B is neutral. They ar2gr j3 wl e3fstr+ pfqkr+9p+2e placed near each other on an insulated table. r9krw r3se+p 2pq+ftj+3fgl2 Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain forceyn q)f,8q( a wd,:qfr/b qbtj, iku-(x. If the charges on both objects are doubled with no chq q,qxy,u/aj (8wd,ff-k:nq bri( b)tange in separation, the force between them

  Two charges are separated by a distance d and ex, m*2c dnb( : vx.zl4)cjouwodert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuandx)24w .:ldjm cobz,* (covul forces?

  Two charged objects attrac2ey04y* gyw wct each other with a force F. What happens to the force be0cgy yw w4ye2*tween them if one charge 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 separatep ts:d+il k(mr/zxr1+d 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 the fzrr /smkpidlx+1 :(+t irst electron?

  An electron and a proton are separated by a distance of 1i *coqudjhemcas9nactc85 q*7z../ 7 .0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next ts 7qha t5jnac.uqcd9i z*emc87c./ * oo the proton?

  An electron and a proton are separated by a distance of 10a/2 ghhu t2*vf 8tqztbc 9liz: t1cj-.0 m. What happens to the size of the force on the proton if the electron is moved 0.5zj:t0 2i/ -tf8h9 a b cc*1ztvl2qught0 m closer to the proton?

  A point charge of +Q is placed at the center of 7 q6c(jstbge4 g+car)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 ofab4 ec6(g)t cr7+jqgs 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 centhzi(yt 0b:)(b mrm bbi3 c52wtroid of an equilateral 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 third charge of +Q placed at one brb )wyti :h5tm(0 2 mc3bzb(iof the other vertices?

  Which of the following is not a w o23*34bk*yi+ho o y d+eeuopvector?

  At twice the distance from a point charge, the strength of the electric o415 vxmip6 pd-shnm ,ldi::zfield

  Is it possible to have a zero electric field value betweu:bfxo, +kcv. pw2 g6jen a negative and positive charge along the line joining theop k f.+2gw6cub, jx:v two charges?

  Is it possible to have a zero electric field value i+g) wy k4(klxbetween two positive charges along the line jg)x 4( ilwky+koining the two charges?

  Electric field lines near psitive point chagq sc33:a3hvv rges

  The electric field show fis j: cxmw2u6 .jmc2q8v9t,un

  Can electric field lines invqc94 kcsdq 38tersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform eos;; f9 . gxu3corm) )+vhudyblectric field. Gi f9 h)+xg3dr bvocs)o;umy. ;uve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollowr j3 acstfnt3f oa 8(3y;ox+r4 metal sphere of equal diameters are each given the same charge, the electric field (E) midway bt n3a;j3 +4oytr( 3x8oaff rcsetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region wvy v +4lj+wa)chere a uniform electric field is directed straight up+jayv+vclw) 4 ward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic eq6alhm18 eu g, f+xprn.5za- mbuilibrium near an electric charge

  A positive point charge is 82fz 5jts5 idhenclosed in a hollow metallic sphere that is grounded. As compar2h8d 5t jisfz5ed 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 static equi9 bgtjio*9+z b4kct c(librium.

State Gauss's law.

  The charge carried by one electron is oivqm6kjl g ar-dr(3-y.-3eh $e = -1.6 \times 10^{-19} \; C$. 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 majugeo nc0qrz6,k77v he0is;vlx95 1c ny more protons than electrons does this piece of16 ;e keuvgj5io0,r qc7nsh7x9zv l0c plastic have?

  What is the charge on 1 kg of pc0q) pr-ww*yv+np:lp rotons?

  An atomic nucleus has a chvg):ofe;1;fs6p 3 udp / gsrakarge 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 charged 1 b*yutc5,tn values of 2.0 and -4.0 mC, respectivel*n1cu5t y,t bdy. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between th1y(ckvs 12o xmem is 1.0 N. What is the magnitude of the second chargeyck( s2mvo1x1?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart arem zzy.k;bog h44;jvj; they?

  The force between a 09e(jzyl gp( d;njvxe2 -u *tv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, wl5nhc ,h-599e gvmda experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric ldg9 m -v,newh59a 5chforce between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The /rc95(:pt7ecve- flca a kf ;kfirst 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 electrostati rc9ea pek tf/ckfac(7l;-5v: c force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC isobkv e,:)6 zgupld5 u1kx lx8.le4 ip( placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the .e p)ov:1 e,lzlpilubg 6xd4k(85kux100 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: r6 wlic1a)ko 6yzz5z n)z.3ckd.e jp3Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x =p zk3z3j.)1azrky c )6o nd6le i.wc5z -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 centt utgdwh1 v40g3 zg)+f4 cjhp6,l 0mkjer of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic 30h6w)m+ p jg4vhjtf,cdgkl t 4z1u0gforce 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 ncj 00ll1 tk:i6f oxfq4C is at (0, 0). What is the magnitude of the net kj1o0t:cl4i 0 6fl xqfforce on 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); Q3 = 5.0 n2vd n26i*cosl ou*t)wC is at (0, 0). What i icu s now2*t26ol*)dvs the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placedlr+2w0e pd y:sw.qhgku e9l (3 at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force qkpse r(w lgl3e hd y9.+u0w2:which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se m3lefls, e ,gp0sotyw;:+ )byparated 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 t ,l seywpmfgl,3:s bt)0;oy+ehe 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 =my.0 ; 4ak6ov,gjtdhz 4.0 m. Where on the x-axis can a third charge be placed so zo d,4k vht0 y6g;mja.the net force on it is zero?

  Charge +2q is placed at the origin and i pb/ 5rtv:l2gcharge -q is placed at x = 2a. Where can a third positive charge +q be placed so thatbtvr52 g pli/: the force on it is zero?

  A copper penny has a mass of 3../o/vzkg2 wg- k 3voif0 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 gral:wifzg0:3 1xtfp9 k +-gzupa vity by the attraction of a fixed proton some distapi1 0gukaz l3g+fx 9w-z:t:pf nce above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by fyp7f)ail (;inonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angy;fp f i7)ial(le between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has .,oslpzfm6 f8a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from thesf .o68lm ,fpz nucleus?

  What are the magnitude and direction of the eler+jyqbe 9f t;h ;/y(bcctric field at a distance of 1.50yher c+(t;; qj/yb fb9 m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is te9stf5ud) qggco1p:v 8nj4 d 3he magnitude of the elecen j)ugc8 q5d p3 419:gsotfdvtric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test c 8l9 6 mpip:z.kczi4hc+up;ssharge. What is the direction of the elec4 9m6;h:8.k icizzcspp pl+sutric field?

  A 5.0-C charge is 10 m from a small test chargey*dma hqikl(zx 6 w+95. What is the magnitude of the force experienced by a 1.0 nC6a*lkim whzy5dx(9q + charge placed at the location of the test charge?

  Two point charges each have pid: 1 dsvb:z4a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the twod i1p:s4db v:z charges?

  A 5.0-mC charge is placed at0r 6y cp0m81jlgj pl,m 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 fiel6jrjm c1gy0 ppml8l0, d at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark r/u /9bmuhcjj9) 9harof a meter stick and a -4.0 mC charge is placed at the 50 ) /cmb/r9ruu 9hja9jhcm 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 = 0.20vn)-g81fgtk d m. What is the magnitude tkvn 8-)d1ggfof the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o-mxd3 wf.rt 3wbzeyl+*u* bk)mji z32f side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center md-btyje mk)z2bl3wrzi3 *3f *+u .xwof the square.

  Consider a square which is 1.0 m on a side. 3s,f yioh1 9s/x.jkl2cglcl. 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 electric field at the square's ce c.lf 9icoh1.g2l3,sxlks jy/nter?

  A force of 10 N acts on a charge of 5.0 mC when itu l,j r..hj:xbyb8ygz /4le z, is placed in a uniform electric field. What is the magnitude of this electric fiel .u r:,yjh/4x e8g,. zllzyjbbd?

  A particle with a charge of d8;qm+ 8a;ya0 9)syy*p nqe o abggjm9-p2urq4.0 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 mapog r33rwd yyf6ez+w.;5xo0lss 0.120 g is placed in an electric field of 6000 N/C pointing downward. What cha owfp03 +y r5; reyw6dxolz.3grge 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. tv9sc/wo:c5bi4 l2b) v5pjha The ball is placed inside a uniform electric field, cv)24 55i: jcsvtb p/abo9 wlhand is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radie*g-g;e:w hi7ti 57gkm e,pkpus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm*7 gkpe7i g5-;kitewp,ghe: m from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a char3lgj8 ( ioyu)hl;2xqrge of 3.0 mC. What is the electric field 6.0 cm from the center of th3gx;o 8i(llhuq2y r) je sphere?