State the law of conservation of e8 i 785tsll 6z-ctqdwtlectric charge.

  Is it possible for two negative charges,2eywic w+ 5ziaty(2z to attract each other?

  Is it possible for a positive and a nusee/yp /3iq0jk(3o)zswx0s egative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the l0p*biln0v;l4m 2 fus glass rod acquires a positive ni; f2mb*spl4 u v0l0lcharge and the silk

  A proton carries a

  The model of the atoh*lgva;n 5lmcz2()/gx *w7uy lar kvls /,*knm shows a

  A neutral atom alwaysf+,5 wnjefr o t(h+ 1ywcvthq8vfp:0-z2z1 ns has

  An atom has more electronsz x bks,z6(u9t than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclewx6ee.3 l,1p4sfmb0bkh +5kstox /qhi are referred tomh bew5xt+ 3qxp ke,fs06ol1/s4 hb. k as

  Materials in which the electrons are bound very loosely to the nuclei and cani w dy-8cx0,qxzkdk j(bdlid9 gn 0+6; move about freely within the material+kq c6bl0 z0,(i x;djwid9kgd yd8nx- are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. T uq /,/ 5lzu8*1cuxi6b upzgnjhe end of the metal bar farthest from znubj5cu1qg8/xp*6 / iul,u zthe charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac)i5) ya 1 1dbjmpu,,cahpfr-jed near each other on an insuj1d)hbpm fy1 j,ai-ac5u r p),lated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an elyt +.jox 6t4jj/jg n0 ,*yt mwm:a0is3wc2oknectroscope positively?

  An originally neutral electroscope is briefly touched with a posi; 9b+.usd+y.x)k2zcn jibn li tively charged glass rod. Txku9zi j;+nb.c )ibd2l+yns .he electroscope

  An originally neutral elfki) c9eij( tcygbv( .q -l-5uectroscope is grounded briefly while a positively charged glass rod is held near it. Afte(e-9.(c vtcifgi-ykq )5jl bur the glass rod is removed, the electroscope

  A positive object touchmc onpk6:: (bpes a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens n op6:bcmkp(:to the leaves?

  A large negatively charged object is placed on an ins xwa:5 00o h:djs 3t2wbpb 53dsecp o-1via:dsulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ba3a b0ao-de:ts3p:i2x s hj5 c 0w:odb5pv sd1wll 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. What is the final charge on each ball?

  Charge is

  What are the units of the Coulombj qr72p8o5 ypc -rnj6g constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by mne 7+q1ba3n:4gxinz a distance d. The first charge is larger in magnitude minna713q b4ze: x+ng than the second charge.

  Sphere A carries a net charge and sphere B is neutral. Trc 8fa 47iu1 pqnrp36bhey are placed near each other on an insulated table. Which statement best describes the electrostatic force bprcf18 4uiap3r76bnqetween them?

  Two charged objects attract each other with a certain force. If th. 8dglt in0zqf(j96jue charges on both objects are doubled l9ujng t qjiz.08d 6(fwith no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forcv*6c4 kn.mzkn es of F on each other. If the charges are separated by a distance of d/3, whackn .m4zn6*k vt are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo8-2xdshao8y+6mgrg0hrzlk q( 2na r8rce between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers 6n0- ol ym h 88arhk2qx(+ gsgr2azrd8is 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 toe auzak2b qy)q2:*0qz rbkrvak/ -d ;) the magnitude of-aaq2kaqqbzr 2v) ur0y)k;/zbed k: * 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 happens to qnknzsg;eoz;- f 5k t:ng;3(z the magn;g;kzq5sn kz (f:eo3nz nt-;gitude of 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 di8 hv:ts fdr1n6stance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the ph snf1rvd: t86roton?

  A point charge of +Q is placed at the center of a square. W hb,zod .9+8m- v)rdd/9g yosnldd,gshen 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 the magnitude of the net electrostatic force acting on the positive charge at the dmo 9,g.,g+ddddbly sohn) 9vz8r/s-center of the square?

  A point charge of +Q is placed a2jgf; 72p; gw)-uoz0qppkslzt the centroid 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 of the other verticf 2;ul2zokg)j-p7 qp0gpw; zses?

  Which of the following is not a ve4nefp6 p.2+9l wv lsxyctor?

  At twice the distance from a point charge, the strength of the owhl 1au)k70ys:/ rg gelectric field

  Is it possible to have a zero electric fielqqh mn- hj0ymib 4.,ez l3;cd0d value between a negative and positive charge along the lidm0jc 0hlqienz -y ;,m.4b hq3ne joining the two charges?

  Is it possible to have a zero electric fielb ke/9xv(c8r jc/ pvp6d value between two positive charges along the line joining the tvjep8x6k/ b /c(cp9rv wo charges?

  Electric field lines neauvsyzy3 rphq3. -88gc r psitive point charges

  The electric field showoje/yodeq( ;fybmq1(/s5,w7 k vhd*qn

  Can electric field lines intersect in fafy mx9m q*p,,ree space?

  A solid block of metal in electrostatic equili1yzkc5w0m1 rn c*0s0m:hdn:bcze 1vhbrium is placed in a uniform electricm1z0y: 5hs 1c wrde1c0nznb:vc* m0hk field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sp0x 00mm;gg6qt nl2 cbghere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface 0gtbqmg6m0 2nl ;0xc gis

  A cubic block of aluminum rests on a wooden taby,odm8 p//y czle in a region where a uniform elect,/ydpmzc8/ oyric field is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electros1 (iavomrjv5 lpi3x; pjj5 81ttatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere n10g1lks * s9t 4lugjithat is grounded. As compared to the case without the hollow sphere, the electric field at a point direct4gn1 l1u*st s0j gkl9ily above the hollow sphere has

State three properties of conductors in st lwh5f)eo,hv+ 5b * xbg.kcu8batic equilibrium.

State Gauss's law.

  The charge carried by one elecc 6e/ks,a)7vecovg6rtron 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 mC4 7*c w1.yqago b w:xb3h0a oaly1*krq. How many more protons than elecybo :o *x0yq *7cwqbhaargk3 w114 a.ltrons does this piece of plastic have?

  What is the charge on 1 kg o+(p4rk s2o*w 13e7trm i dnfimf protons?

  An atomic nucleus has ab t rutd0crd zy.*z8-71p)pt a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated vp xpizv8*n0 uk4e0p9by 1.5 cm, have charge values of 2.0 and -4.0 mC, respee0upvp 84np0 vxi* z9kctively. 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 them is 1. sc:fu-ulgao:pmz 2m5ju4 y/ 60 N. What is thefaj-m uly: uc/g 625mzpu: os4 magnitude of the second charge?

  Two 1.0-C charges have a 3i ,zbmp1xz 7w ;m;n-5jtee waforce between them of 1.0 N. How far apart are they?

  The force between a sg*.gwcq 7 a*m$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience r m4q2g7wtb e3l(qh 1zn3fos;px-h( ea 1.0-N force. If they are moved to a new separatioq4w e2(qgxpmnhzb - e1t;rf o( h3l73sn of 8.0 cm, what is the electric force between them?

  Three identical point charges o/+s3.vrscne 6f2 vmfqf 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 electrostatic force whiq/3vvncs r .fm26 f+sech acts on the charge at the origin?

  Three point charges are placed -dbmi nf p29b8on 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 magnitude and direction of the elen2dbm ifb8 9-pctrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positio d e4vh5+xa,abns: 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 charg bavad+he45 x,e?

  A point charge of +Q is plachhkw1+my8 .r2 hr(sci ed at the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.0 N acts on the positive charge at the center. What is the magnitude of the force that acts on the center charge 8 2.rsmhh+ crw(ihy1 kif a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =dx cezl- 7* sxe;knw8) -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). cxx es-ezwl* ;)d7k n8What 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 01 glu0cp hd,6/;)pnym( cd qn+izb6vawku(e(0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Whap(zb0nveqw )ilg dm 601y+k /np cducu(;h a,6t is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placedc. a /pd7lpym8 at the vertices of an equilateral triangle which measures 30 cm on a side. What is the ma8cdlpm a7y./p gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separatedn0j +:l4zj0hch jc +tk 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 electrjk:c + +t 0hn04jlcjzhostatic 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 = 4.0vfdt1 8oj *ak*qmyk e.x*ni*5 m. Where on tf*xt.*n8iykm e5vkqj1 *aod *he x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pls tnzmje jf((y7645 rd( ty8placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zero?yf(jej4ystd r l 67 (pm8(5tzn

  A copper penny has a mass of 3.0 g. A totak twb po 6eu5c pxt6j(y68-,cc)t i9xbl 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 th; 51g,eo1ah5iulwno ne force of gravity by the attraction of a fixed proton some distance above it. Ha11 u,how; egnl55on iow far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadi k/(j7.cdh3 t5xvboo s which are 30 cm long. Both a .jb(ht7ioxo k5c3/dvre 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 charge of +t9z;fp6k3o pdls; pt2 40e. What is the magnitude of the electric field at a distance of 1.0 m from the nucleus?l;6 o p9d 3;pt2spzftk

  What are the magnitude and direction of the elecx/j77do+ hz 94njzneutric field at a distance of 1.50 m from a 50.0-nC ch7 e xonu/ nj7jdh+z49zarge?

  A 5.0-C charge is 10 m from a small0g3y un u1y kqyxf9us6r l8z2; test charge. What is the magnitude of the electric field at the n u8y02f 6zk3; ysgql91uyuxrlocation of the test charge?

  A 5.0-C charge is 10 m t 3oyfn *jm9(wfrom a small test charge. What is the direction of the electricn jf9w y3*m(ot field?

  A 5.0-C charge is 10 m from a sma ip.6s-y8nyjfll test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of .6sjn-8i fy pythe test charge?

  Two point charges each have a value of 3.0 C and are separatecu;+a2 tjgu3vw/5lt vjnh-,bt tp /u3 d by a distance of 4.0 m. b+-ttvw,3 /uthva/ j;5 2u g3cjtlpun What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark xf3y 0agvy: zo0vdo:r;h6u 6iof a meter stick and a -4.0 mC charge is placed at the 50 cm marz:6ryx fov:gvuo;30 a0i y6dhk. 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 -4w1eobb;.hs / v.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is theo1wbe .h/s; bv electric field zero?

  Two point charges of +3.0 mC am5(:rwph0 xuuuyjqq .j bm- ;+nd -7.0 mC are placed at x = 0 and x = 0.20 m. What w. ubyqjjr ux-muq:m;h5(0p+is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cofo8 *q4bv h :rr84vhe*t, hca;iy1g ckrners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at *8qfv4 ci1kgyobr ae 4h vch, t;r8*:hthe center of the square.

  Consider a square which is 1.0 m on a side. Charges are 0d icwbu(,ps- 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 adip bu(s, -wc0t the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it n50 hyok 4ufa)is placed in a uniform electric field. What )hukfoya5 40nis the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a m39k/i dpavi 4 j-cs-,ot, kgreass 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 field of 6000 hp ra rxz 44z: i.mb ,:ap:izucyt9z4(N/C pointing downward. What charge must be placed on the ball azia4m(u:94h pz: yirtbcx ,z:r pz.4for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. m5r;1n usc3 rjThe ball is placed inside a uniform electr mnr5 cj3;r1usic 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 +2.0 mC. What i8o mljrv,(rl ;-z1/*p hm.xkf ) ajsdis the magnitude of the electric field 5.lr8mohf-, z)*jx(kvard; j s1p/i.lm0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge oh wamg m2d)4dnn4uk f(8l7f/kf 3.0 mC. What is the electric field 6.0 cm from the center of the sf fmwl4/dmk8h a4) nk(2dg7nuphere?