State the law of conservation of electric charge.:1qn1d g+ppef

  Is it possible for two negatia.thh . ae (, (cf2vdd6p9r frp0cznl-ve charges to attract each other?

  Is it possible for a positive andz/ obf)s y1l uyh5:ai5 a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dur, wa d;rhkk55ying the process the glass rod acquires a positive charge and yk5wkhar5,d ;the silk

  A proton carries a

  The model of the atom show.)7rou p4vehdm*+7ebfjr y r ;s a

  A neutral atom always hac(ke. 7pyl- yos

  An atom has more electrons than proton1 s9fchrz2j v jk)4gv+5tbfa+ff.-sc s. The atom is

  Materials in which the electrons are bound very tightly to the nuclei a86(f vynja +ev/ck7/mm 9pjbare referred to anmj vv 67j 8fpbcaa/my9 k+(/es

  Materials in which the electrons area.5 tphh8dmx2 bound very loosely to the nuclei and can move about freely withip8 xmhd at.25hn the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metf,m2-h0fqr bk-w w1hc al bar. The ebhchmw ff 0r-2,qk-w1 nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrne/( hq- /cjnwal. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that in/w e( /cjqn-hs grounded. Which statement is correct?

  How can a negatively ch rh+j2:yccsdf/ m) km9 i66n :wwf5txwarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positivelud -y y5jj67xj khp,n,cu;0syhj xm/2y charged glasu,27j6;-s/jp k5dhyhjnmy x x,0 yucjs rod. The electroscope

  An originally neutral electroscope is grounded brieflyh6upmai1jjc-; jxz*+ while a positively charged glass ro6+jm i*-azj1 c uhp;xjd is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepp8legeptz3kq v0t / f3)9e;tq arate. Then a 39 gzp qkt/fe8pet0 3vleq ;)tnegative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is plx-w9c mgt9g v/aced 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 negativ9g9t wxc -/vmge 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 const x.babg) :elixr-5ix +ant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chargoy6 75-rg2daxm;o grigr ,2mwe is larger in magnitu7;oo6m2r-mx2grdgi ra5 y w,g de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. 4c*c y(9f gegrThey are placed near each other on an insulated table. Which statement best describes the electrostatic foc 4*e9 fgc(gryrce between them?

  Two charged objects attract each other with a certain6 r4w2e o*verrk5 fxz4 force. If the charges on both objects are doubled with no change in separation, the force betwe 4weo * e62r5xzrf4kvren them

  Two charges are separated by a distance d and exert fwj.u +b;s ;d jvg0/zbmutual attractive forces of F on each other. If the /jgdjvb +;bz 0sw;f u.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 happens qvcuz5*3l ywyrz ,e3.to the force between them if one charge is doubled, the other charge is tripled, and the separatiouw,vz *r yq5zyec33l.n 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 1k6j(ytzy/ fzk )/t 4g (sqwuc1rlzs 70.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?cz/7r 0t)tf4zu /yyl16((kqj skgswz

  An electron and a prot/ vx 9qehty-ncvd0esv, y21e 3gd)j9j on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a qe je0v/9nt y dsgvdj9c-hv,2 3 yxe)1second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0qhpuu o 3q b*92j60v,izj +iec m. What happens to the si epu 3oq2czv+6ib*0ju 9qhj,ize of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is plac*1k +kwyo:tw ted at the center of a square. When a second point charge owky w1t +k*:tof -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 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 equilaterz qa-kz duwfzmd3g( z.6;f* 9ral 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 z*(q ga3mzk;fzdz6dr9uw- f.+Q placed at one of the other vertices?

  Which of the following is not a r 16.0dxg yyoj8med8x)8f uyu m5w(oo sv89byvector?

  At twice the distance from a point charge, the streng ldnq.(: ngzny/w.a7:rptv a7th of the electric field

  Is it possible to have a zero electric37vrqf):8h u u2kjqensn ;c( k field value between a negative and positive charge al n2snk8rjuhq3c;q7feuk ):( vong the line joining the two charges?

  Is it possible to have a zervo o4un4.(zzi xl*wh8 o electric field value between two positive charges along the line joining the twxhzu8nvw44 . io( lo*zo charges?

  Electric field lines near psitive point chal /) cgqn9lfg7iftr rw*d98e0rges

  The electric field shown ag23yg e cxj69

  Can electric field lines intersect in free sf/y2 kw ud.(vopace?

  A solid block of metal in electrostatic equilh nnhca.5)cf(tre7)8od-dchh u sx)2q23mphibrium is placed in a uniform electric field. Give a statementp r8henaf5dts()o c-huq.nc d2)7)hcm3 h 2x h concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal )ye3: ncbha3fd +xrp2 sphere of equal diameters are each given the same charge, the electric fi)da 2 ny:cexf+b3prh 3eld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table p9edv7 y a2(tjin a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's t27tve(djpa 9 yop surface?

  If a conductor is in electrostatic equilib*6vgja e qjt7;.wyp1srium near an electric charge

  A positive point charge is enclosed s,g*+pdg3a4acs n2 (5 vd xruiin a hollow metallic sphere that is grounded. As compared to the case without the hollow spherev 3 5+r2ap xs,g4udna* d(icgs, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat(xc a0ay*k 7v3eic l2fic equilibrium.

State Gauss's law.

  The charge carried by one electrid zen.ixh /unq2i067fl/(dqon 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 than/.s3hbz mlm*(sgbbl-bj - /wn electrons does this piece /m- lns-.bs m(lb*bz/bh g w3jof plastic have?

  What is the charge on 1 kg of proton3j0 db;/h dan (bj hqayxnn.9*s?

  An atomic nucleus has a char( au wjb0zh;*bl u9z/j. tpa:qge 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 2.0 and 6eht*uuys2v 8ig y3r8.dpr pz1 hs6i /-4.0 mC, respectively. What is the magnitude of the electric r3u1us.8z i8ypsritphy de h 26/6v*gforce between them?

  A 1.0-C charge is 15 m from a second charge, and the fon8sp b;h5psxzxv,i bc d *kidn.k65+8 rce between them is 1.0 N. +5 8vbd6,p dni k.*pxsis8 x5c k;nbhz What is the magnitude of the second charge?

  Two 1.0-C charges have a force betwee76+ne6e zwfz f i//ewdn them of 1.0 N. How far apart are they?

  The force between a 1o+hbf )j,bw j$30 \; mC$ 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-N force.:jc9e9t4zf,1q ; vbqzq-t cgt If they are moved to a new separationtb4q ,;zvz9 gc f9 :tt1c-jeqq of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC ap .gjo z;;m/w*i-cj k 2hfrq7ire 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 forcejk. q;opjic/zhw-i2f*r;mg7 which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.-wx.kc go( q3y0 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 o c-.ogx qkyw(3f the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following posic7r79h3xt tlw .rlyw 0tions: Q1 = 2.00 mC at x = 1.00 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 chart.lt0xr yc9r37lh w 7wge?

  A point charge of +Q is placed at the center t)kb:.nntcw(emq 3+cxd,xk -:im p 5qof a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2+x3kbn ,i:mt- et.cdc nkwx)qq(m 5:p.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 is opqs,,4pgmr).,jc wf at q,wrs, mgppc.o 4jf,)(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); *w , 5gu:xt6c9wju/ um;8mijf mtguw4Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of t cuw,ux4w:85m ;jw i*/jgum fmt9t6gu he net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilate0ll)cd0+dfpa(q( l k58zbbhkral triangle which mea(lk0(d8c)+ pk5 zqa l0bhfl dbsures 30 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 sdcz)i5qpe8f by*5j4 n eparated 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 the electrostatic force actne*z d)54f5p8 qciybj ing on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chargw1 6rpk1gbwc 5-e j:afe is at x = 4.0 m. Where on the x-ax6jkfp-b:11ar cw5 g weis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the ori8gt b32marai1gin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on i r32 bagi18matt is zero?

  A copper penny has a mass of 3.0 g. ;;d- amsls1 h/*yur; kpjhv1 oA 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 rs4cv nw.j 8e3force of gravity by the attraction of a fixed proton some distance above it. Howw j843nvcser . far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nozcmsw ,;(d8cd nconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them cz w8 mdcds;,(apart until the angle between the threads 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 electri5sa*f2t-mv m ht9c9 uv, +k6iqaz2itk c field at a distance of 1.0 m u-a9*imfkstcvm+a5t,z2vi9 qt k 62h from the nucleus?

  What are the magnitude and direction of the electrihu;+xc4b6 ok ;uloy.o c field at a distance of 1.50 m;uo4c xu;hk. ol+o6yb from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Whag 2m2:;4nupqxlsi9r x t is the magnitude of the electric field at the location ofpn i:92lx smqgx; 42ru the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction oni1cobq(mh5n5 x2 n y3m;iao-f the electric field;hom5qnn32- yi(i m 5n1xao cb?

  A 5.0-C charge is 10 m from a small test charge. What is the ma k7- ;f. 8kg nxcjugtz11cjhqjmc4n5m ;2(awngnitude of the force experienced by a ccngqkj(m w75g 4.m-c 1kf1x j;nnj 8z;t2au h1.0 nC charge placed at the location of the test charge?

  Two point charges each,4 fa1ae- ;;fjujbi:f ci(w cx have a 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 two charges?(b aj:u x-ecjii4faf;f ;1cw,

  A 5.0-mC charge is placed at the 0 cm m p) xorm v:h-xum3c0u0av4v9 sark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What pvrm u43-vaxh c0v9:x0s u om)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 ) :lt7yjjg . kig6q)j0 9ervkga -4.0 mC charge is placedykgglrkj g)j:. ti v6e)q 0j79 at the 50 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 45*3gd(ydcz gatf3 utat x = 0 and x = 0.20 m. What is catu3 y3f5 g*(4dtgzdthe magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. yg8athobq.78 y 7p: nmThe last corner is occupied by a -3.0 mC charge. Find the electric field at the centyyatg ho .np7:q 8m8b7er of the square.

  Consider a square which is 1.0 m o:y7:bj6fi ;kbdu7:q gzw 5hrh n a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0g wid56 7jbhh::zyu :rfqk ;b7 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 charsg,kinb(..l9 rq wex o (w7cu8ge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this ele,8c.iqn (og x(s .rwk9bwue7lctric field?

  A particle with a charge of 4.0 mC has im,sr ;2*2 kpdxf)jmfa 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 isom/ f07c5q w)2lmns v9cyg/ by2qx ba- placed in an electric field of 6000 N/C pointing downm9 2-gy)2/ nqocbb/yq5am0l sxcfw7v ward. 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. Th -n*0;fmugr34 rguza be ball is placed inside a uniform electric field, and is suspended against the force of gravity. What ar*f 43; b0uzugr-angrme the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge o1vpecx jus+hd:u.p-/ f +2.0 mC. What is the magnitude of the electricd:jpu/ hvus-1 e+pcx. field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries h(cx. (jk x7pva charge of 3.0 mC. What is the electric field 6.0 cm from the cenvc7xk p.xj( (hter of the sphere?