State the law of conservation o ok5wkfnf; (s+f electric charge.

  Is it possible for two negative charges to attrb;(c6ea,bfby3iw026aw yt qxact each other?

  Is it possible for a positiv2).z0aswqv r ae and a negative charge to attract each other?

  A glass rod is rubbed with a piec.xe;g 2am e26qkfiwgiw0 2co 12;pxibe of silk. During the process the glass rod acquires a positive charge and the goewiam2;2kw;g x6b qx2pf.iec 210 isilk

  A proton carries a

  The model of the atom shonaaf u-g w07-jws a

  A neutral atom always ha-zq 7jzlo2jo 2s

  An atom has more electrons than pro48gtb nfsnol 3, lf cug /83+)e0gd;;xa cyvqitons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referu8 fd7vnpm m,7red tm8u,p 7dmnf7v o as

  Materials in which the electrons are bound very loosely to theu/2y* x rd jt 9ulqk0-tsri5z5 nuclei and can move abo 05rtlsuk rzyd* 5q-tx j9/i2uut freely within the material are referred to as

  A negatively charged rod is bro;rr lr(nk*3s (id8 cca npx(n7ught near one end of an uncharged metal bar. The en*r8((lcpds 7(; ncairx3nrk nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net8 rp1na/e5 cel positive charge, and sphere B is neutral. They are placed nelcer/58p1an ear each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positively s3,/re9y +zqpewike zad ,;;q.b(dib?

  An originally neutral electroscope is briefly touchedudw8 z rb8av 4xsa*;n-8gul2:v2mwj)xv l a,f with a positively charged glass rod. The electros;vaajxvb48vfw m)x28l -ur:8 u ,nzswlad2 *gcope

  An originally neutral electroscope is grounde un61vcz;t7j.de 9icr d briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electroscc1en id6ujt7;c r. vz9ope

  A positive object touches a neutral electroscope, and the leaves sep)xk9 gghjvk, 2arate. Then a negative object is brought near the electroscope, but does not touchvgkxg9hk,2 ) j it. What happens to the leaves?

  A large negatively charged object is placed opd/l ab9ao( +9v yaxi-n 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 thd lbxi9 aapo-(/+9vay e 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 Coulomb con;z ka9o0ktf 2jstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by bv fw 02ratiul0he2+ +x9wumign2j63a distance d. The first charge is larger in magnitude than the second 0rt+9mi+2ej0hu l 62ivn2wwxbuf 3 a gcharge.

  Sphere A carries a net charge and sphere B is neutral. They are p dj+bh sis )enf1 qat96i-tvru 0*:wy-laced near each other on an insulated table. Which sta vwr stf 1ij*i +-:n6y)0e-dusqbat9htement best describes the electrostatic force between them?

  Two charged objects attract each other wi ves p-aj7 ij s.ia2n/f(5,c -z3 qz/lvz7ptebth a certain force. If the charges on both objects are doubled with no chz ./3zsivqn/l a bp7 eatsc-7 5p(v -iezj2f,jange in separation, the force between them

  Two charges are separated by a distance d and exert mutualrv33ch+3ujiic b a0x 0 attractive forces of F on each other. If the charges are separ 0+chb3u3ra x0 jc3iviated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hapa,th,r,rh t i()ikvt8pens to the force between them if one charge is doubled, the othh tthrvi), a,, 8itr(ker 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 distance of /+n4ll qs.ffmso b. 1y1.0 m. What happens to the magnitude of the force on the proton ifl.lfssq n/b fymo.+ 41 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 7v1ucsq 1 tfpd )x2j;khappens to the magnitude of the force on the first electron if a st7f)qc pj1 2us1v;kxdecond electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happe1m,ees3b xrxr ; )/kkjns to the size of the force on the proton if the eleex/k,x r erkms;)j31 bctron is moved 0.50 m closer to the proton?

  A point charge of +Qq8a(1 f gf7exi5,6itd4 wwuhjb7yn z0 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 center. Now, identicag7 bwe fdj7x64 wtihfn8( u15ayzi0,ql 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 eq6a s3/opioj ,guilateral 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 i, sojgpo/3a6 one of the other vertices?

  Which of the following is not a ve+,rug7cm cvv+* t:qf+s qkpm6ctor?

  At twice the distance from a point charge, the strength of the electric fi6hgx 8bzmemub /4 /q0teld

  Is it possible to have a zero electric field value betwec4; uup29f vjben a negative and positivepu cfbj24u 9;v charge along the line joining the two charges?

  Is it possible to have o:6aa224i (naai mdfca zero electric field value between two positive charges along the line joining the two charges?dom 2(fa :n2c 64iaaia

  Electric field lines near psitive point chargquj(b5grf y 4+es

  The electric field shown f p)yesex /,i+ou qndmc-43;z

  Can electric field lines ionsyn gg0mv5rxd2) ) 70zhx0gntersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in aamnu7td8 1my 7xt;qf3 uniform electric field. Give a statement c 7t1 tu;a3n78mmdf qyxoncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi(g4 u jxr2f:67cjy xueven the same yfej:c x2( x6rguju74 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 whedh+g45, :mhzymj uc2 k,ghp+qre a uniform electric field is directz+yhmju5 pmg2 ,h,4 +chq:gkded straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrb(x ) u*afqj054 qkd -mr7eoozostatic equilibrium near an electric charge

  A positive point charge is enclosa7q2fkttin /6 ed in a hollow metallic sphere that is grounded. As compared to kit/ft qn2 a67the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in ssrw )0hr v3 +y,0ckqhce3 ,mqstatic equilibrium.

State Gauss's law.

  The charge carried by one electc7dr 5 s.huw7z l*kev s8rkq,8ron 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 7m62 pcn.ki:ixyhhi9 of +2.00 mC. How many more protons than electrons doesm:ip.6i2 nc9ihk7yhx this piece of plastic have?

  What is the charge on 1 kg of protonsecr-,9ejl-c tqv15h5h 2exn5 m tqbu5?

  An atomic nucleus has a charge of z3ld15 i29*bg8t. cbyofzehz0 z*b rp$+40e$. 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 m-.urp /x- p- fn5tyfacharge values of 2.0 and -4.0 mC, respectivex.-p/my-u5a-frpn ft ly. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the forcfrwb:w0d*ns u9s2 7nce between them is 1.0 N. What is the ma:sfn2nuwbsc* w 07r d9gnitude of the second charge?

  Two 1.0-C charges have a force between bi rz6rj1hs k..56foathem of 1.0 N. How far apart are they?

  The force between a y:s6 j1i+skw kaq: i3u$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initibw 22sl/2qtvially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric for2/vbqsw 22tilce between them?

  Three identical point charges of 2.0 mC h6zb.2ygd k // (amqojare placed on the x-axis. The first chaj(yamq gb.zhdok 6/2 /rge 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 which acts on the charge at the origin?

  Three point charges are plall0e,tz9b-dyy:o vup zazn n;td0rh: +61o)jced on the x-axis. A charge of +2.0 mC is placed at the origin, jl:10d rt -uetbz609dl ,;+oy znn:oyah p)z v-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 electrostatic force which acts on the charge at the origin?

  Three point charges are located at 7anm lbxfn/ ks:h,39tthe following positions: 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 forcn7x: l,/ 3 mfsakbt9nhe on the 3.00-mC charge?

  A point charge of +Q is placed8jcd 9u )ervf. 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 if a third charge of -Q is placed at the lowj) ur.df98evcer-left corner?

  Q1 = 6.0 nC is at (0.303hu,o8qv n1 xi m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thqoh1xv, 3n8iue 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC i6jcn rpyoi35xn29qo)*vo3p j s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction 2pj65nr9jqovoi*xo p3n) 3ycof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equix 0qxz5 )s)f 9;zoz) mtbzmd4rlateral triangle wx;5b f z)o))rsmdtx9q0mzzz4hich measures 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 qeyp (+fk ,;pk+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible p, yfk ;(e+kqpto place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the wdq08/e o 4dpk 4udha(vs);*p us +sxcorigin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on i0*)(d+;cxavsh kus opedws4/ 8up 4dqt is zero?

  Charge +2q is placed at the qis9z y4s 2sd;origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the 2 s4s ;y9zdqisforce on it is zero?

  A copper penny has a mass of 3.0 g. A total 9ec hisv+a1 ib 8jjtjr u2c9(.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 gravity by the attraction oyq0mk2ork6:9fn1v k i f a fixed proton some distance above it. How far above the electronykv1imk0r9n fkq62 o: is the proton?

  Two 0.20-g metal spheres are hung from a common pointmqe 2)bs5 /bwkegqe pl8bofd;.:pc-( by nonconducting threads which are 30 cmd w;mkb) fpo(q /bq8-.l:pe g25cbese long. Both are 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 +40e. What is th8i wli- 9:hjlx b)d )v+x;s/9tjrodaje magnitude of the electric field at a distance of 1.0 m fo: 9xib +dl8t)vasjrd9 ) -wl/jix;hj rom the nucleus?

  What are the magnitude and direction of the electric fiel;xq(c1zfa ,7no8h rd zd at a distance of 1.50 m from a 50.0-nC c (fz qcd;r,axnh7o1z8 harge?

  A 5.0-C charge is 10 m from a small test charge. What is the magniturf0(l m-s hl; r/kptf68tf) ypx:v3bude of the electric field at-htfu)80 : rf ;mx3sp l t6/kyvpfblr( the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direc 1 z)kn*2byre5nodh*p c:l(l mtion of the elecl:e k 2mo pyz*d b(nhn)lc5r1*tric field?

  A 5.0-C charge is 10 m from a small test 1pdtu do;wlu+xviaqg )w 1(1,charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the locatilw1vtdu1wxga iq ;)1 ,pduo+( on of the test charge?

  Two point charges each have a value of 3.0 C apzkt+)mclk ( *er n;b d7r4rvhyef5;9nd are separated by a distance of 4.0 m. What is th 9thl; erprdk7r54;k bv yfnc*+(m e)ze 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 stick and a -4.0 agd0.q a8y ;j9uvotv9k /meb7 mC charge is placed at the 50 cm mark. qveodvby 09t 9. g;umaj8a k7/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 mC ra0 6 dq4)i;euzpu6qlcharge is placed 6l qqpdz ueau6i ;4)0rat 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 a lurc+yq-v6wf0u-de)d t16z dnd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electricd6v0w- ud d1uf-erqclz6+y)t 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. T2s g2 a pkk 2z8k4m whv3 /v:t*;j5fml1ulkghvhe last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the upszlk1vh: g8/kjkw v4lh 3mf*;gtv2k2 m5a 2square.

  Consider a square which is 1.0 m on a side. Charges are pla, /:mb gcun einvv/2c*ced 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). Wha*u,m nve: v/2bg/nci ct is the magnitude 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 placed in a uniform electrmt 6uutnfz zs1)/ -3uzic field. Whaz)/ u6uztumnz3sft- 1t is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a ma ig+n6jba g1t9ss 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 N/C p62np-+eoiun r ointing downward. What charge must be placed on the balln+epon-uir26 for it to be suspended?

  A foam ball of mass 0.150 g carries ao2.wafa(715b o mdfe w charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fiel d2wwb f.7me foaoa5(1d?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the magnitu d5u cz87bmzzgc yss+o204oi69 posr: de of the electric field 5.0 cm from thzm +ysoz urz6s58:09cgop do b72 is4ce sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What vepqn-l 8 h4bd0e j7b;.mf u(qis the electric field 6.0 cm from the center of the sphere be(qq jfmv.u8h;-b 4 7epl0dn?