State the law of conservc-*sb rjd710;wrjf ckation of electric charge.

  Is it possible for two negative charges fgzn q9i*o9i;to attract each other?

  Is it possible for a positive and a negative charge to attract each othe/axe,- jw(.c nitw j1tr?

  A glass rod is rubbed with a piece of silk. During the process the glarl-z4 ts8w- tyrhoi3), k;jxk .hfo t2ss rod acquires .;l sxk8r,-tzirhojw) 32fyh o tk-4t a positive charge and the silk

  A proton carries a

  The model of the atom showjp z*g ne+,vjk3f*nfkzm xk8 ,p-30 pps a

  A neutral atom always h/rium289argd(u)t 5 eug3 l jkas

  An atom has more electrons than protons. The atom i1m7bk .e8k4ymo p ng9os

  Materials in which the electrons are bound very tigh d5wfz 6wnrwl, b0o+*plw-* 5uh/lea otly to the nuclei are referredw+ z,f ld-b6*wla 5w50wr elon/po hu* to as

  Materials in which tha.9j(xirdboydk,n ;( pa ;j)gq, cu 4fe electrons are bound very loosely to the nuclei and can move about fo4d)pk(j.y ;n(,r; bcdg, jf 9xu aaiqreely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged m e zn(3o9.b4 4xeeuqkhetal bar. The end of thn.q exe9uzek34 h4(ob e metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutrals; ewj7x 1zhh 98f (9eib8gdiv6)6o hfdl-vxb . They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded.)ee6;-of g1 9 d xwbhhibl96vh8z7 (is8j dvxf Which statement is correct?

  How can a negatively charged r 01ls lu;yyoo1od charge an electroscope positively?

  An originally neutral electroscop74l.9lg .atvibn nn 9jsv(t5 pe is briefly touched with a positively charged glass rod. The electroscope s7ivg9b 9lv jtnnpta(n. l5.4

  An originally neutral electroscope is grounded briefly while a positively chac+g.8 5,2dbmd e7 fmc0ovskn v,d7pgkrged glass rod is held near it. After the glass rod is remmksod7kfdm,v2g.0bcde g ,c 5vp n+78 oved, the electroscope

  A positive object touches a neutral electroscope+3vas/c( ible, and the leaves separate. Then a negative object is brought near the electroscope, but lb+icv se/a3( does not touch it. What happens to the leaves?

  A large negatively charged obje 9eeq-k3krqr2u u- 51qz/cge/:ff1ix wba )qbct 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 negative object/g1/qeq2kzi r 1w 3cxfkq 9u- f-b ar5ube)qe:. 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 cnzk dyf/)df 1r7)-zi fonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dvq/z rej4dl4*r+1 acwistance d. The first charge is larger in magnitudwe4j d1q a*/z4cvlr +re than the second charge.

  Sphere A carries a net charge and sphere B ispcs-md wv x p.pq79vlj*0+(x m neutral. They are placed near each other on an insulated table. Which statement best describes the j7xppvp -+ x0m*vsd wmc9q l(.electrostatic force between them?

  Two charged objects attract each other with a 9m,qz l1a rlny *5gc:q15yqgy certain force. If the charges on both objects are dou1qgzcy ,*aq9gy515r m nll :qybled with no change in separation, the force between them

  Two charges are separated by a distance d and xgnb2q04avi 1exert mutual attractive forces of F on each other. If thgnxb0q a2v41ie charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each othg8g7nw/nyn+ d1vfw a4er with a force F. What happens to the force between them if one charge is doubled, the od+af1wyg/nvg w47 8n nther 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 1.0 1h((q,j 2e/ig bnvajbm. What happens to the magnitude of the force on 2ebv1aj, qgjni/( (hbthe 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 t 22x1 q ezm4-f;vvmkylteoe ,jwm *16xsw(go6 o the magnitude of the force on the first electron if a secon6xe g(se64 1xoq-22 myv oltvmw; f1zwk,em*j d electron is placed next to the proton?

  An electron and a proton are separated by a distancesqiu22 wp(0 oe of 1.0 m. What happens to the size of the force on the proton if the elo(2piq sw0eu2ectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the c,c7(,vsvr f zmnyw tm/:6fq9henter 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, identical charges of -Q are placed at the other three corners of the square. What is the magnitude of the net electrostatic f:,sqz7y(nw/ fmv mcrfh9 ,v6 torce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral t;qq d*j9s/z r e7yfim6riangle. 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 chje/d;f 7rmzys* 9iq q6arge of +Q placed at one of the other vertices?

  Which of the following is not a vector.9egyb ig.4r ofk4+ ma +r/jrr?

  At twice the distance t23*b ;xe))6p5sa jbvme wzdh /1pnpsfrom a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negatics09zdwr-k45pnh x8l ve and positive charge along the line joinh cdlzn0w 5-sxrk849ping the two charges?

  Is it possible to have a zero electrw5lwx p4h r.u8hli8,uic field value between two positive charges along the line joining the two charges? wphhl5,l8.ruu8ix 4 w

  Electric field lines near psitive point ch3ivdn6nn*5 u qew* qcdtz ndffq98 45;arges

  The electric field showz x+4s zj--hldn

  Can electric field lines a vdy1w wvp/hl,) de(l-4xnx2intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unisuqm;sy t bm44ws 34k1vqju:b3n7 * ipform electric field. Give a statement concerning the electric field in thisstb3s3v1;y4 b4jpmu7m ukq4n:* w qe block's interior.

  If a solid metal sphere and a hollow metal sphere ofr o +bq;va-z;haqka-20 s mn30t f9xyx equal diameters are each given the same chargeak+ a2 frtq0;osya -0 -bqh3xxv mn;z9, 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 whvn-( er0n2 fj:1vcut sere a uniform electric field is directed 02 funcvs1r j vet:-(nstraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chargf9v;:t5;z mwt nyt;p+su vlo2e

  A positive point charge is enclosed in a :duy qva,m(b9-y qh .whollow metallic sphere that is grounded. As coqa,bydh:(qy w uvm -9.mpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stat*t+jo.b;p8rwpd/zqd ic equilibrium.

State Gauss's law.

  The charge carried by one eleak comaf//szch 81 )g/ctron 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 yz.utpo;s vpcu1n )q p9c 6(d)more protons than electrons does this piecepdn v(9oq6zyps.; tcc)1pu)u of plastic have?

  What is the charge obrv8*z ihk -; eezd+c4n 1 kg of protons?

  An atomic nucleus has a charge o y73vnmbnd/ k1hq)q*qai(6 k tf $+40e$. 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 -4.0 mC,b1/actxc, 8 t,b 0mzdr respectively. What is the magnitude btmc 0txr,/ ca8z1, dbof the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between thyx:t2f ji 7vyg(96bo eem is 1.0 N. What is the magnitud e9y2ygx:fo b(jti7v6 e of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Howlv/9 ch6. xpwj far apart are they?

  The force between a mfk93, wrp lgqyx .s);$30 \; mC$ 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. If t2q4b *jcai5xc kr1(+w6 w uuuuhey are moved to a new separation of 8.0 cm, what 4rq5c+2wxu(*aub uci u1wj6k is the electric force between them?

  Three identical point charges of 2.0 mC are m;lf;pzs5 w4w 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 which ac m;pszl;4w f5wts on the charge at the origin?

  Three point charges are placed on the t9: mf-3b whwle2ffm2x-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 anfl f29m:twfmb h3w-2ed direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Qs z kq)uqn1))y1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -y s z)n1q)qu)k5.00 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 ar*brs:(xx cy3 t 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 positive3r y* sxrc:(xb 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 (0.30gv w0kf:+r*p:z c wz0t m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What tkw0fzp 0g wz:c+v:*r 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; zf;a.jtlobl.c2 shwiz.4v ..10 m); Q3 = 5.0 nC is at (0, 0). What is ti.jwvfc; oz .2tbzh ls4.;al.he direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilanon2ybn8vvvco - )*gb + zon9*teral triangle which measures 30 cm on a side. Whato 8vz*nb)b*cnoo n n v9yg-+2v is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wud ;;q1 :iiiy zr9kc fj2vza.1hich are separated by 3.0 m. At what point, on a qziz;j. ;a2kf9 cv1 1:ryiiud line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the ur 68gq+fq ff.origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can affu6. +g q8fqr third charge be placed so the net force on it is zero?

  Charge +2q is placed at the orig4-xm)qn afmvi- 9lj1w in and charge -q is placed at x = 2a. Where canaq) xwnm-4f ml 1j9v-i a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of jpjimjyjpvo05u e9 g89f 0 w3fx( d(i;3.0 g. A 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 force of gravity by the attraction of a n1w* iu.gp,dk fixed proton some distance above it. How far above the electronw, . p*g1ikudn is the proton?

  Two 0.20-g metal spheres are hunguj)nlvhqv// (hbd4:d-pa 2 wc from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the anglp cdldvjh42-q bwu a:/ )n/hv(e 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 elect3wuaos :kg2oymlj3wpa* vi7q) dd .).ric field at a distance of 1.0 m from the nucleusuyw.))3 j sp 7 :av*gil3q.moda owk2d?

  What are the magnitude and direb14x-ry d/nrul +qk9qi 2cw,xction of the electric field at a distance of 1.50 m from a 50.0-nC char rnrq iby/c 2xxl u4k19+wq,d-ge?

  A 5.0-C charge is 10 m from a small test charge. What fu (y(pa pz25ois the magnitude of the elyp( oupazf5( 2ectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargem kas*m;6:ap n. What is the direction of the electric fiel masakn *m;:6pd?

  A 5.0-C charge is 10 m from a small test charcrw +-iuqy oeosy6zy26j v8/2 ge. What is the magnitude of the force expe-zi yovuwqyy6 ros2c+ 8/j 26erienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dm4x osus9. 4voistance of 4.0 m. What is the electu.oxvs4o 94 msric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 zg x4v2gp 32 te2:vmzwcm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm marxg :4w 3gvmpzz2 e2v2tk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 u84 zjbsaq .8emC charge is placsz 8.48uja qbeed 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 at x = 0 anwvpyyi( kqb1,h+h (f: d x = 0.20 m. What is the magnitude of the electric field at the point midway (yqb+wfhh,k(v : iyp 1between them?

  Three 3.0 mC charges are p-tk(c12 azka4kiyv byc5 t91yr./b e at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of b tytc( v5k1ik1. b a z9-/yacykper24the square.

  Consider a square which is 1.-ojl*hw+q ;bd.+o 59sqosq ob tml)l80 m on 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); +3.0 mC at (1, 0); -3.o+b lh*dqmo.jo)8+sl tq9s o w5;lb-q0 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 c )kw1ndd7xi x glktg;)+g/ 1gcharge of 5.0 mC when it is placed in a uniform electric field. What is the magnitukidw;+g/g 1l x7) gt)cx gdnk1de of this electric field?

  A particle with a charge of 4.0*isjt2* cs g::ye3(ypsjh +g bp0l8m3*eje rh mC has a 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 maso c9/6es ,yb2 hgjrj:xs 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susje:2/,j6r9ox gy chbs pended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed) u7ogz0 hjt; 9 .1cr8meeunke ofj*:t inside a uniform electric field, and is suspended against theru;9)0k1z o8egtf meuo*c . :jjhnte7 force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cmpk 9-hce5y z9.d sh-qc2x/hpel;; 4kcsgqo, d carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from thec5ec;qh- ,sp kl .;zx4s-qhkdgp2 y9o/cd h9 e sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge qch *zu:zu+t:fgc8(sof 3.0 mC. What is the electric field 6.0 cm from th8hu f::(*zzcqst+cug e center of the sphere?