State the law of conservann , qek1g(s3;*s loxbtion of electric charge.

  Is it possible for two negative charges tot/4 * u z;s(x*nsfjjnz attract each other?

  Is it possible for a positive and a negative crn*us ,(zk(,ryx-ee q o)3zqlharge to attract each other?

  A glass rod is rubbed with r a7ckc4uu+:ecx4 el tfamo +g/g:;9da piece of silk. During the process the glass rod acquires a pos7a;dc/xmoet gk :4ucu9re4gc+:al + fitive charge and the silk

  A proton carries a

  The model of the atou+v,hq)oi/3a+ /5nzqb mwid km shows a

  A neutral atom alway(s (sb,odwq9e s has

  An atom has more electrons than protons. The gm cwb *os+ut2;+ i+uiatom is

  Materials in which the electrons are h xzmk;x35g9obound very tightly to the nuclei are referre5 3g h;kxomz9xd to as

  Materials in which the electrons are bound very l(y qviudxk)*. -* dqrqafon0(oosely to the nuclei and can move about freely within the material(*xuo*- .aq )inqf0 kqvdd y(r are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T /ghf zn1)onj:ig -8kgw76c vbd8u* dyhe end of 7bgyf )n* gzgkv-6hiw: 8 8jod/1cd unthe metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere *nk )yaru bk81B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire thatyn)1 kra*ubk 8 is grounded. Which statement is correct?

  How can a negatively charged rod charge an e 96uq6)qdoevglectroscope positively?

  An originally neutralv:rb q l fql;y29rjme*v5 pb7: electroscope is briefly touched with a positively charged glass rod. The b: v:ej*prvyl qqf2;mr5l7 b9electroscope

  An originally neutral elect,4n j3. lfssrdroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is remon4.df,j s3s lrved, the electroscope

  A positive object tou ,0 crem(6a r0hgplnv:ches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but n(v :hra, 60grcm elp0does not touch it. What happens to the leaves?

  A large negatively charged object is placed on a0+b. m/q:yopf gdccn9n 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 negatc9: .q+mbd/ gn0fypco ive 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 Coulomb constant ugu ptlx: n8t9(2;uh1fd+n(jm1 zxab$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charokyc*c 4s3b( ;pzxd6e:ldl qh n.q: e6ge is larger in magnitude than the second char4qq3sh dl; :oelb*6d y: c6p.( czxknege.

  Sphere A carries a net charge and sphere B is neutr:oxq-h 9; cgagal. They are placed near each other on an insulated table. Which statement best describes the electrostatic force betqx9cag o;g-h :ween them?

  Two charged objects attracxms wzyqgki))i7s5b/n8tr.k wo.v8 * t each other with a certain force. If the charges on both objects are doubled with no change in separation, the force x8 zw8 7ik)mk yo)5/t s*ir .gwnvb.sqbetween them

  Two charges are separated by a distance d and exert mutl.p.t,/n )dbomms1 p sual attractive forces of F on eachn b,)l p /mdm1.pos.ts other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happensfeb/lc y/ x,/p to the force between them if one charge islbf// yxec p,/ 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 dista:5rt4a )e:dxobg uan1 nce of 1.0 m. What happens to the magnitude of the force on the prounr o1a5deab::tgx )4ton if a second electron is placed next to the first electron?

  An electron and a proton are separated by pw6cihy b/)d 1c3oy g7a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electro1hcdciy/ 6pb7 owy)3 gn is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ8ybe+yu no c+9ydew;)snzu40ens to the size of the force on the proton if the electron is moved 0.50 mw;u)ond be +y+uy04z9y ns8ec closer to the proton?

  A point charge of +Q4c wk7t+mpgrg 6np4w 0 is placed at the center 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 cw6+0m44tk7 nwrgp cgpenter. 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 placed at the centroid of an equif:(r i)ujn1x c 5,ye/mpu5g 1 t9pntlnlateral triangle. When a second charge of +Q is placed at one of the triauexn,mnpln: fc9tj)iyt 5(15 gup/ r1 ngle'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 vectm m,n+qfb 67yr3 v3udlvx ig,)30pir qor?

  At twice the distance from a point o owss(5 tdeme5lp n+))4k :smcharge, the strength of the electric field

  Is it possible to have a zero ellm 5e oq3 6)i k1ni,nte65jrvpectric field value between a negative and positive charge along the line joining the3q 6me o551pnvje6r),li itkn two charges?

  Is it possible to have a zero electric field value between two positive charges bci/j-mi o5i6k9 (zh fk)(e1sxs7ji ealong the line joini1-m97( s h(ixk56ij fci)o kbjesiez /ng the two charges?

  Electric field lines near psitive pobj00k+u* q4lzdh/uniint charges

  The electric field shfqv,l1 4 7ijiz z/ pk5oa/pu3lown

  Can electric field lines inters/zi5 2mg m:d0k(su kz)o x e08ymjwp-dect in free space?

  A solid block of metal in ele 2*h(nw-f ik*hug)-o apall6j ctrostatic equilibrium is placed in a uniform electric field. Give a statem -fo)**lguhwnjk(il 2a a h6-pent concerning the electric field in the block's interior.

  If a solid metal sphere dskej -tshlvc7p)ms 5ff b9* 4o 671vgand a hollow metal sphere of equal diameters are each giv s) t7of9vgpfmsv64 es1 dkl-h75j*bc en the 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 uniforxvp6 gu-v gjne q;2/j/m electric field is directed straight upward. What can be savpg6x/ejgq2uvn; /j - id concerning the charge on the block's top surface?

  If a conductor is in electr/ ;pmp 6w pb by)xh+jg,runb8*ostatic equilibrium near an electric charge

  A positive point charge is enclosedfl 0 txq,ef66(9l1lrdl : wdlu in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly ab66(0w lle1,xldu qr t:l d9fflove the hollow sphere has

State three properties of conductor qjp 1tc-rej(:s in static equilibrium.

State Gauss's law.

  The charge carried bn/:)hpl t9m05lmp3 wwgrblv*y 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 charge of +2.00 mC. How many more protons an p91mgwtt0./uxy(x than electrons does this piece of plastic hp .y9t/x1uw gx0tn( maave?

  What is the charge orhdvm vo6zp2 8f*9p6)v; i kht(f ptw/n 1 kg of protons?

  An atomic nucleus has a charge of +lgmh(o() 8/raf dn p8bc1cl u$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 gn/pj;h* z n+;(iyu)qy)vobtcm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electbhu+ on)t)( *pyng;i/zyj; qv ric force between them?

  A 1.0-C charge is 15 m from a second w:7eso:6ydpm charge, and the force between them is 1.0 N.mw:odsep 7y:6 What is the magnitude of the second charge?

  Two 1.0-C charges have a force between thtn 7ykn(hwzrwp 6 *6+oem of 1.0 N. How far apart are they?

  The force between a s+,tjmw +ga w4k.: mpf$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm a pnhdbt /k.8l(o 2a0 -;mfzrrcpart, experience a 1.0-N force. If they are b- a8z ro(;/hd tklrcn2m0f.pmoved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0i9jf3iikjb/ uc(+ .t r mC are placed on the x-axis. The first charge is at the origin, the second to the right at x = (r+ i/ut 9.j iibf3cjk50 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 pla w,2vt yhxpm)*ax8x- aced 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 +4.0 mC at the 100 cm mark. What are the magnitt),a-y 8axv xp2m*wx hude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = /)kj*ts ydh/ /6j ldpz2.00 mC at x = 1kt/pj )hz/6* s/ ddjly.00 m; 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 of a square, and a seconlsf p 3papb7;e. lbm).d 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 actepbla3bms)f .p ;l7.p s 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); Q1iz kghf6rm4h*4/spl 2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thp z/ 1*mh44ilfr gsk6he net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 x;t6.aj.is;u 3 vzh g9etyvo2nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direc j;su.vtoh;9g3v6i2a e.yxz ttion of the net force on the 5.0 nC charge?

  Three identical chargesx u/i+f r rt7*rkprp 0*9a)tmu 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 o */+mtkri u0t *prrp7 9aufxr)f the charges?

  Consider point charges of +Q and +4Q, which are separd)q4zh , 7z9-er9gdwi jl cj-zated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a chargejz7eidgdrh l, wzq-)c9j94z - 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 s*0k+qckbc2ujx6m 7kat x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?u06x 2kb 7cmjkqsck *+

  Charge +2q is placed 6wxcc dp3((liat the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that x(wl3 6 picd(cthe force on it is zero?

  A copper penny has a mass of 3.0 g. A total po5p6takodx5b 3 vv j7ywxh3xn /gj29o0et .6of $4.0 \times 10^{12} \; electrons$ 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 agjgw;j )f 6yvbn*bzfm982uz4lainst the force of gravity by the attraction of a fixed proton some 9ujjmz4 yzbb)2n8l6f vgf ;w*distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu4 uxx5x4i vc)qng from a common point by nonconducting threads which are 30 cm long. Both a xcqixxu 54)v4re given identical 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 chkilp +3j .+vg5chdd1zarge of +40e. What is the magnitude of the electric field at ++z1dvli . kdgj5chp3 a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of thhie84qzujm *dz;,tm qpl -x*.e electric field at a distance of 1.50 m from a 50.0-nC ch l-j zpqq.te*z8ihmdx m;,4u*arge?

  A 5.0-C charge is 10 m from a small test cv8 u9h+nt )vjnharge. What is the magnitude of the elecv)t +8unnv jh9tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chay 3xy 91sdpd o(2zto5drge. What is the direction of the electric fielddyy3s 5 dz2p9xo ot1d(?

  A 5.0-C charge is 10 m from a small test charge. What is theu;a/ evss *xwkb0ux40t t:x*v magnitude of the force experienced by a 1.0 nC charge plk*t :bu004 sxxtax; s*wvu/veaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d0wv )v3-leaxj8h,n byistance of 4.0 m. What is the electric field at a point midway bl0bv3 w h)ex-8anvy,jetween the two charges?

  A 5.0-mC charge is placed atr7oxk5b+:9fy 5 eqcjz the 0 cm mark of a meter stick and a -4.0 mC charge is plajc5o 75yz+kxf: q9rbeced at 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 -4.0 m x+5u/z woy+s5u 4d+ lacnnibt54ybp 6C charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric fielsd5l xb5 bwoutn zy+a4p6ucn+y+i4 5 /d zero?

  Two point charges of +3.0 mC and *f q(h3lmwzl/-7.0 mC are placed at x = 0 and x = 0.20 m. What iq/ w3z(mhll*fs the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s(s crcg8(5tt bh;0fnf quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center b5 8(;rtf0ghcs cn( ftof the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corner ;0ethbu3/9ikxk ef5gs 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 magnif 9/gbut53h;xk k0eeitude 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 pla6z3 c k3gsvondgch8v xe* qga/ud- 079ced in a uniform electric field. What is the magnitude of t8 ngz/xev0ca-9 o cd37u3 shdkg6 gv*qhis electric field?

  A particle with a charge of 4.0 mC has a maqm4 x/a;;cyrif+lq(0q m)wpp 6 pu* gfss 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 electric g/w/yx:9 h)9opu vsj ci7zxh( field of 6000 N/C pointing downward. What charge mu:yuzo/phs) (xwvg/hxj9ci97 st be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 n3*ffac4jav s;;h q1mb r/r1-tsv(m oxC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. x bhrs1jf3r /sof vma;*(c-mv4 t;a q1 What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magni9b2xn)*i 3 hjo7bvo iatude of the electric fiexoh *vjbi37bn92i )oa ld 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carl/msd)oez4.l*jw(jz bxd 3 9aries a charge of 3.0 mC. What is the electric field3zo(zs e)9jb x lwmjdad4 /l.* 6.0 cm from the center of the sphere?