State the law of conservation of ucqmn f:.nn+ts a-:-pss 0i2c electric charge.

  Is it possible for two negative charges to att5i m oc*cln,7csom,*qract each other?

  Is it possible for a positive and a negative charge to aifjl g du)l6*sg1*bt1 ttract each other?

  A glass rod is rubbed withs9zlxm0ppn l4yw/9 , j a piece of silk. During the process the glass rod acq/lz 49 j 9wn0pysxplm,uires a positive charge and the silk

  A proton carries a

  The model of the atom show4iwq xhmi33k4s a

  A neutral atom alway(i(asi93rj /6kmmw cv8i,(l qqlaef*s has

  An atom has more elect -d(+ge,h7ab o rlzov4rons than protons. The atom is

  Materials in which thecuo28o6ji e x- electrons are bound very tightly to the nuclei are referred to aju ei682oc-oxs

  Materials in which the electron)hh+tibdblo x3eme (ec(4+k8h d0t 5ss are bound very loosely to the nuclei and can move about freely within the material arlb3dx4h5it8sem heed) bco0 +tkh(+(e referred to as

  A negatively charged rod is brought near one end of an uncharged metal ba) w+ldco jh-1m6b(jxer. The end of the metal bar farthest from the charc( x1b jedm-lh)+6jo wged rod will be charged

  Sphere A carries a nc)v1)a yn6u )9hcgjgxet positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct) g)xy) j9nuahv g6c1c?

  How can a negatively charged rod charge an electro)9* ojf 7/rc3s3go yad:hkesuscope positively?

  An originally neutral electroscope is briefly touche-5tiwb- gt1cnd with a positively charged glasn--t15wbcig ts rod. The electroscope

  An originally neutral electroscope is grounded briefly while a pos*tk7 p 2fn/sl )z sfuj(5rsvo*zp) am0itively charged glass rod is held near it. After the glass rod is removed, th s7 ln a/o(pfsm*zvzj ru)f 5s*kt02p)e electroscope

  A positive object touches a neutral electroscope, and the leaves separate. y j z2bd/d/u8aThen a negative object is brought near the electroscy8a 2db//zudj ope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placjp; mt0 -l:taoed on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral mpl-j0tt: om a;etallic 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. 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 4p a/t4 7u2zuulk9hjt the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fiebtn2 2 g2u- c6f;ykcfrst charge is larger in magnitude than; gtkuc bf6c2 y22e-fn the second charge.

  Sphere A carries a net charge and sphere B is neutral. 2n5nn w88vu d 5v, /wti.coboe They are placed near each other on an insulated table. Which statement best describes the electrov5.iovwn8,nwoe58nd 2 bc u /tstatic force between them?

  Two charged objects attract ea,5j* gh*n;lnd9pnjnw ch other with a certain force. If the charges on bo*5;ljjn *dnw,nnp9hg th objects are doubled with no change in separation, the force between them

  Two charges are separated by a distaw,/e,.mgh:5 dgw hksance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, we h:5h,w gd/. wm,kasghat are the new mutual forces?

  Two charged objects attract each othsuusa5:r, 1 fher with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? The force is f, hua5s1sr u:now equal to

  An electron and a proton are separated by a r1 e2c sem0l8gdistance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placs82 0cl me1rgeed next to the first electron?

  An electron and a proton are separat/a;6 esit,mk jed by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second elec,es6/ mkati j;tron is placed next to the proton?

  An electron and a proton are separated by a distance of 1fs4ux gq*e -k7.0 m. What happens to the size of t ug-7f*sexq4khe force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second polkmu b*ru-a/- int charge of -Q is placed at one of the square's corners, it is observed that an electrostatic force of 2.0 N a mku- a/b-lur*cts 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 equilateral ti1z2dcfdx(uufc/ v1mhs4y1zs j+ ::z riangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrost vc+uhsz(fu:syd4fz 1x1/j :cm1d2z iatic 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 nowcvl1c4uh0x su 3x*/*8 nlulb 9:v rrft a vector?

  At twice the distance from a point charge,ixrhemo q8 bu2y d78+0 the strength of the electric field

  Is it possible to have a zero electric field value w8 clr)x4+per2xa1pqb)tlk;between a negative and positiv r +b1pxt2 xq;awpkle 8)c4r)le charge along the line joining the two charges?

  Is it possible to have a zero electm- 4 kcdpf*g.4: atzx/vz;iapric field value between two positive charges along the line joining p 4 tz*xdkcp 4vgamz.-af/;:ithe two charges?

  Electric field lines near psitive 7 xajj 0u :7h8ndovi:rpoint charges

  The electric field show-9sd6r qger:s+ndm28 e6h n-;nsoar k n

  Can electric field lines intersect k ;1osl(as/ch( s -l 1fte2idiin free space?

  A solid block of met otwbnt ou3f5lk:**igbd 0 08kal in electrostatic equilibrium is placed in a uniform electric f: *l08nb 0ou 3d*gftikotbk w5ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equalcqti8wvegwwhnci / 3( z,l0// diameters are each given the same charge, the electric field (E) midway between the center and the(g z/ /w cv3c0iw 8wl/qhte,in surface is

  A cubic block of aluminum rests on a wooden tabl1m.f o ho.dn*26ck bahe in a region where a uniform electric field is directed straight upward. What can be said conce.ofh*o .n6db ma1c2hkrning the charge on the block's top surface?

  If a conductor is in electrostatic equr bl;vtcr* 2jf32)loz4 3wyluilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sph*qr.cah4 jnl 5ere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above5r l4a qhc.*nj the hollow sphere has

State three properties of 4 dx y: vm v(.,2ast/y pkbql(ka0:asdconductors in static equilibrium.

State Gauss's law.

  The charge carried by qb2m i+hrjl:j7nqgn 1ztb, )/9c l2 vbone 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 h;r(m,.b/jt5w 9t bwl jfusjm4as a net charge of +2.00 mC. How many more protons than electrons d4f.wmj9s(brj5wt jb;lm ,/ u toes this piece of plastic have?

  What is the charge on 1 kg of2nm:v yh36t/lbxs/k s protons?

  An atomic nucleus has a chargeyh(cwjs( 9h ale4 5rg)55i dch,gkx4m 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 -4.0wm;g5jq;t( zyv rch+kec*n .) mC, respectively. What is the mm.)* ;tc;k(jhegcqy zv +wnr5 agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the for awln9nvbnumt s( z-)a ),*y 3w1mk9wpce between them is 1.0 N. What is the magnitud sy(1npwv )a)b 9 wanktnm w9u*lm,z3-e of the second charge?

  Two 1.0-C charges have a force between them x.03 y gzx8 zxbkrln 0(s7rxrjo1ap 2/of 1.0 N. How far apart are they?

  The force between a lpyx73;6jzqa+ .;dr a3z vqmk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, is2s17 2h8+c xsw36rm 5zoxxcmo ypo g2-(lnnunitially 2.0 cm apart, experience a 1.0-N force. If they are moved too2u zco(752x-3snnpy26 r s mgwo m8h+cxxls1 a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed one9ghlqz1+4rq f)zk am6.0ery 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 ek yez +mz4lhae.gqf 6 r9r)q10lectrostatic force which acts on the charge at the origin?

  Three point charges ahs,4 y w-ihcjzq.g:)ire placed 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 magnitude and direction of the electrostatic force which acts yz,hgq.:)-w scj h4i ion the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.;c e;)qi8hn jn,q egd900 mC at x = 1.00 m; Q2 = 3.q)c8i;,n; 9ee hndjgq00 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 epn;1nxv q- ;ou* oyj-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 ceyo-1n op ;uxv*enj;-qnter 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 =car c.uvx(l0tyk ac3u;/xw) 7r0s 4qoux/ rk1 -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the netxslac04a tq wx./k/0rro1u; cc urkx)uv37y( force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is a(h: s z 3a):ud(esalyzt:6kkm t (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). s kemz)huyalk:t a:(:sd (63z What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0: yg i*42nibxu .yzv:-va:h ns mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forceuz*-nh:a.s :iyn4gv b2: ivyx which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3ooap42:3 x ftyerd) g 5,ukdq..0 m. At what point, on a line between the two charges, would it be possible to place a cha ko,daoue4y p52 .fr3t):xd qgrge 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 at x =y2f) .3 so(rjkopfix/ 4.0 m. Where on the x-axis can a third xi(o/o.)ry sfjk2fp3 charge be placed so the net force on it is zero?

  Charge +2q is placed a npt.r(bpm51oen5vkwl+ejlu4d2 -(lt the origin and charge -q is placed at x = 2a. Where can a third positive charge +q bpom(+ 4tdlv.1rp55ne kw(l -jue n2lbe placed so that the force on it is zero?

  A copper penny has a mass of 3.0i rd89 (pms7yd 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 c)d 9r+ iela/( qfpgq0by the attraction of a fixed proton some disl0qfipc)edar (+ g9/q tance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tu.- 6;i3fetq;hgdu gv v7 )crshreads which are 30 c)cugdu v;rqiv ;63-gfs 7eh.tm 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 ha; oc*df,7* sbexjd.qos a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fxcdoojfe ,q;**. s 7bdrom the nucleus?

  What are the magnitude and direction of tloy hc(ww d7j:o 7a6( q9kyjw*he electric field at a distance of 1.50 jo yq k7cw yldwa7oh:69((w*j m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a s 6(a3w a/owwdri+6ofe/3 cxn umall test charge. What is the magnitude of the electric field at the location of the test chargw wre u(od axoif33nc6/ +w6a/e?

  A 5.0-C charge is 10 m from a small test char7httsn* i(o. tge. What is the direction of the electric fiit o(t*hs n7t.eld?

  A 5.0-C charge is 10 m from a small test charge. Wh79jqa cb s;v0e/ pxc 7dly0w3tat is the magnitude of the force experienced by a 1.0 nC charge7w caj7/; 9c0e03q tbyslvdp x placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofvnyvo8z4 7ev- 9- zyn +/phoji 4.0 m. What is the electric field at a point midway between the two cv 7pz9+8vi- y n- 4jvzooheny/harges?

  A 5.0-mC charge is placed at the 0 cm mark osh*xcqtj-a 2 6f a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect*xq6jhs c at-2ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark ofpbe*5kd6 0hk y a meter stick and a -4.0 mC charge is plach dyp6e*kkb50 ed 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 dl 8qud,)0lfu mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway beqld du0,)8luftween them?

  Three 3.0 mC charges are at the three corners of sx.,(sbuw2 g/ffhf5quc qx4 *a square of side 0.50 m. The last corner is occupied by a -3.0qf*x/ su,f.c g2fsw h5uqx( 4b mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.09u3ed2am r 3kn 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 2 eu3nrdmk3a9); -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 charge of 5.fpo ;;x-imqh )qqkc lkhs93 )50 mC when it is placed in a uniform electric field. What is the magnitude of this electric f-x;i s); pfko qh)c5hqm3 qkl9ield?

  A particle with a charge of o*i 7mz;, pdqv4.0 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 mass 0.120 g is placed in an electric field of 6000 N/C pl8ebfl 6lndlz+v nm b1( 824k6f(tac8kuw ji3ointing downward. What chargew(48ct(ab83jlk6 8+vizln ulnfkl 1 efdmb2 6 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. The ball is pl4on*hj19 1htsixn cqt-b6:traced inside a uniform electric field, and is suspended against the bn- xrhh:14 9iscoq6jt1t tn*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. gol88 c.q*d0u9zao twWhat is the magnitude of the electric field 5.0 c9zwo*c laq 88t0gou.dm from the sphere's surface?

  A metal sphere of radhrd6nn+8 x j0k/zhe7kius 2.0 cm carries a charge of 3.0 mC. What is the electric fieljdx8 /re k+khzh6n07nd 6.0 cm from the center of the sphere?