State the law of conservak2s oh3 bjwyb;7 /s*hktion of electric charge.

  Is it possible for two negative charges to attract each other?:ys.,8n ianjo

  Is it possible for a positive and a negativ70 4qohpu(ooi e charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duringwjm )zn7k4fxf, *d/ar the process the glass rod acquires a positive charge and the s/m,fk 4xard )wjz* n7filk

  A proton carries a

  The model of the atom shows a :r/toj4 9k eda)ljes(

  A neutral atom alwayb: ur m01rh3:qsda0j rs has

  An atom has more ele p 2 uozqtc-.na:,f*bhctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei ar+m ;o;nem (n h0mnw.yfe referred to asnh;n0( .ynmme ofm+w;

  Materials in which the electrons a8 9cxhjykj,r(a.q tlae ab+c :fc 82l9re bound very loosely to the nuclei and can move about freely within the mahfqa8 (9 .t2kycxe9cb,r+8jl a:j claterial are referred to as

  A negatively charged rod is brought near one end of an uncharged metafkq8rk2 574) pqhwi7igq31y ktk0 fgll bar. The end of the metal bar farthest from the charged rod will be charkkq 47hy3irg)1t8fki klg 2q 0q5pw7f ged

  Sphere A carries a net pos8p)y:zh;t vil*az pw/itive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is groun /)w;h:ilayp*z8vtp zded. Which statement is correct?

  How can a negatively charged rod charge an electro w caj,njk78r9ro322ud :t9aajpue n0scope positively?

  An originally neutral electroscope is briefly touched with a positively charged 8.wa5rn/ fe gfcl7ln7glass rod. The 5r 7lf.cg7e8nwal/fnelectroscope

  An originally neutral electroscope is grounded n6 65g oy;g9rsryg7bpbriefly while a positively charged glass r y;6rog5gg96pnr sy b7od is held near it. After the glass rod is removed, the electroscope

  A positive object touv vsh le7sd(-)l/;l fvches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch)l s/e vd-( svlf7v;lh it. What happens to the leaves?

  A large negatively charged obj5rhl ;f)p9c otdzsy4 (ect is placed 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 negativfz5 )(p4hrl c;so9dtye 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 Coulo(u gbt8rdu6rjpm .kg1 p1)w.z k gp8zl*( kg-xmb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a disg.-rewtnk 6jk), qe sx+ f8i9rtance d. The first charge is larger in magnitude than the second charge.s8)6rw f-kn9e e,+qitxgr.jk

  Sphere A carries a net charge a ne) z;hpph)b7c-e* s *uq(xmlnd sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betweecxm;)7*qh*eb (suhz -)ne pl pn them?

  Two charged objects attract each other with a certain force. If thb7l.iweh hnrt++ 1nb3gpfu 2.e charges on both objects are doubled wihpbg +u3l2+.terhwf . nn7 1bith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive fo1bxu jfx8 f)09 jp6g1evmm)(m xy zjd2rces of F on eauj0b )mjf2y1 fv6d xezm(8x 1g)9 xjmpch other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attral d5f-k;zctzj , r b30rr u,xkx2j3q*oct each other with a force F. What happens to the force between them if on k z*kz;2uqbf5jo33c x rxlrj,r 0-td,e 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 2c,xcylab0y d jw)f9a:0rll+ m px,i8are 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 the firsl9bx,,)j yc ydxi0c: a8p+mrl0wa lf2t electron?

  An electron and a proton are separated by a distance of 1.0 mz():(0toazfg d j.5i(bleiv f. What happens to the magnitude of vj i o)gf. (:5tab(( e0lzdfizthe 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. W:j0 wj:jb2w6 v5of 0fjwkpz+b /p0 nhghat happens to the size o05b pzw:nw6jjf0j o2vk f 0b+hj :/wpgf 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 center of 5i2 d(imnqp( ra 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 of the square. What is (i5ripqdm 2 n(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 h1mqdks+u l1,rxk*n-an equilateral triangle. When a second charge of +Q is placed at onnd1m1r+ ,x q-k*lkushe 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 of the other vertices?

  Which of the following is notl q2 y;f7792x+j tiktg 0zebsn a vector?

  At twice the distance*aed5 9q tfk;u from a point charge, the strength of the electric field

  Is it possible to have a zero electric field value betwev- 1r1tw ()kkcxdbkzhba:57 qen a negative and positive charge alo1kxk-a qtc:rv kz( )wb7hb5d1ng the line joining the two charges?

  Is it possible to have a 2ckk3 4v/ r qh;pxzsf0zero electric field value between two positive charges along thev0f3/pxqkhzr k4s;c2 line joining the two charges?

  Electric field lines near6gc(: k2-jctyv7 o 1wdzu7 urpx 3u;wf psitive point charges

  The electric field shown v.lsa0 a/ak 9b

  Can electric field lines intersect in f g73hih4,lzxm ree space?

  A solid block of metal in ele250 hxswlp u qzc-h 4 t/y5dz88h(kyupctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's interiohz h-8/kq( 50 dt8yu5zppu2clhsyxw4r.

  If a solid metal sphere and a hollow metal sphek).bj1g6jeikoix m2 7re of equal diameters are each given the same charge, the electric field (E) me6xj)igmi2 7 k .jok1bidway between the center and the surface is

  A cubic block of aluminum rests on a woo ozt5ld:l-o+xden table in a region where a uniform electric field is direct:d-ox+ o5lz lted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equil9u63 vhm jn:fjibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic -*gmw+ fjpa4ghw 6t 6lsphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direct-6mf thlgp *+6g 4jwwaly above the hollow sphere has

State three properties of cok6.6f gctsmm,x)c3gugtet 6,nductors in static equilibrium.

State Gauss's law.

  The charge carried by one wta4 6 lrg:fp3electron 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 many mo /cae+ij(woon n0( ca0yk u5vvt,g2k;re protons than electrons does this piece of plastic have?jka0e2(i/ untc n5gv(cwk, oy;a 0vo +

  What is the charge on 1 kg of protyt6 w6o s4+elwk :-rltons?

  An atomic nucleus has vqglg0;7 kmz/a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated y*h:l-u gda6ylyt0 x-by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What d:-ug thxy lyl-y*a06is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force beqr;0i. k)ltx atween them is 1.0 N. Whatt;l 0 k.iaxq)r is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far ff vvnv9z01o pm8)t v4apart are they?

  The force between a 9 kcvqplsopm 4i .dcj .zy-4mi62ee.t 60n-on$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienuik zzxxw 11 15f,m )hdl*q .;/dkxv1/txhnzfce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them5h*q /wzxi1d1 ;lkxx.k1v ),tz m1zfdhnu/xf?

  Three identical point 0yc8miow x96otdnl/8 8i qnz )hw2*d pcharges 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 electrostatiq 2ixondmwd hw08z8t y 6c/in)9lop* 8c force which acts on the charge at the origin?

  Three point charges are placedf5nww b06.jo k)38 j.qji jgsa on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0qk3fjan 06.gbjjso i)wjw58 . 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 positiok*sgjf orek 3t wvy8:b/c(l, 1ns: Q1 = 2.00 mC at x = 1.00 y3 (kfkj,8 gwlvse tco1:b*/rm; Q2 = 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 o p/pmmh6ybme3i vh3g vj66 p21f a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an elecphivv6pm y613p b/je g6m3m h2trostatic 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 mdp s qavrpiy )(f z5..+n;fw:mrwax v+llu*+-); Q3 = 5.0 nC is at ( y p.+f+f -+rpazwvui ax:*lr n)5(dv mqws;l.0, 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is c9*3ro/ cwutz at (0, 0). What is the direction of the net force ctwruo/3z* c9 on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed aplgrs2 tkx)a(:b, ofdr6m8p85e( ky o t the vertices of an equilateral triangle which measures 3((sa8bft po ,l25mrkx86erd)kpyg : o 0 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatek tc; 7-f*cpued by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chp;k-7t ufec*carge 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 p(o1 ,(cq 3tvdss1-wj g eow5acharge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force 1gw csasjde,5 -3 vopo(q1(w ton it is zero?

  Charge +2q is placed at the origin and charge -q is placeulgot *b7cptn4 r (ux47 7/(sx:qieywd at x = 2a. Where can a third positive charge +q be placed so that the oltns7bex 44twup(u*gy: ( 7rx/7iqc force on it is zero?

  A copper penny has a mass of 3.0 g. A tdjeujwa3w(3qx6j+( z )xv i(lmi - q2lotal 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 again1czx j 5vm-p (lem-ak6st the force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the pro 1ckl6jzv5m(a- xe -pmton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads w2, n 3wb/flipfhich are 30 cm long. Both are given identical charges, and the electrostf,pw3b/2nf il atic 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 i kon .v9x+k v4ehrz90charge of +40e. What is the magnitude of the electric field at a distance o9v 49vner.okz0i xh+kf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di 7s*qwkoe+u+b6c8a wcstance of 1.50 m from a 50. wab+ w6ke8cu7s*o+cq0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whaw5j-lm rfub 48t is the magnitude of the electric field at the location of the tejmbf 8-l5rw4ust charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directionsbqb+5z9 ia0n of the electric field?sn ia0b+ z5q9b

  A 5.0-C charge is 10 m from a small test charge. Wk. iru1pvm):ghat is the magnitude of the force experienced by a 1.0 nC charge placed at the location of tri.uk gvm1p :)he test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance e xwb*)e *3:;i+h kjod; bp j,u4vntzmof 4.0 m. Whob3m);* ,inkbx4 tjvd*j:p e; ewu+zhat is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter,-ibz gnuk9 rp( (ysa0uu3c8n stick and a -4.0 mC charge is placed atuai3rzcs8n( 0n , (pb uy-9guk the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a cis64ku8cr6n 0f )+i:prq p0 n vmd:cy-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elp08suc)0m: rd:p6ykn v 6+riqci4fn cectric field zero?

  Two point charges of +3.0 mC and -7.0 mC are ks( 93rq4yavbsp(t zdx6 c3;p placed at x = 0 and x = 0.20 m. What is the magnitude of the et9r(xb vyq4cs(z ap3 dk36;splectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o,:)a*f b4laz gqv)d( u)t ryzkf side 0.50 m. The last corner is occupied by a -3.0 mC charge. Findkfgtzl)y:aabq)r) d u v4*( ,z the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are h/dvn ed 685ucplaced at the corners of the sq5hd 8dven 6uc/uare 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 o n jufi9v9;ps)n a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elpvsn99 )fjui ;ectric field?

  A particle with a charge of 4.0 mC has a mass o23e-jocq .xmm 85v si bkh*g7xf $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is plac90ngduop t z//ed in an electric field of 6000 N/C pointing0o znp gd9u//t downward. 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 ballv:z.n s7 8g/cduc(;aw kho qt8 is placed inside a uniform electric field, and is suspended against the force of gravity. What are tg8qw/uoc(n;vt7sah8c zk d .:he magnitude and direction of the electric field?

  A metal sphere of radius 10 cm c /t)duf. bfh/m q z*adp4;o2foarries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sph pq2f/4b zo*houta; ddfm/.f)ere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.4z/ve8uq :4 ivgg2dmb*e nm4t What is the electric field 6.0 cm from the center o:guq8zm4n vme/d gt 4e4 *biv2f the sphere?