State the law of conservaj2y+p2z7z9 mtq7p c):dov1ldiv sw a 5tion of electric charge.

  Is it possible for two negative charges t(y y/jcfhqa g1cw+ d7/o attract each other?

  Is it possible for a positive and a negative charge to attract each+9rzf8ccou z mdw. *3q other?

  A glass rod is rubbed with a piece of silk. During the process the glass 7 r0y6-; hvolc g:ts5;k*mazn ggx/airod acquires a positive charge and the sil/n*;k r ;z:t- 05smg 6 aylgaxvic7oghk

  A proton carries a

  The model of the atom sh0 0dkmo3vnnu rrpp;9)ows a

  A neutral atom always cxclf. o;wz2fd9g -+o qp.:vd has

  An atom has more electrons than protonsj6r 2o50+yna28zh6,c h bjwx+ emkh j0si1tq i. The atom is

  Materials in which the electron1z1pp*s3f h xds are bound very tightly to the nuclei are referred to ashxp1p*d f13zs

  Materials in which the electrons are bound very loosely to the nuclei a5njls1j h, ktm di9s63nd can move about freely within the material aj3jnid61 h,lsms k5t 9re referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Thetv -b+o mh4vt,ssh/4q enb+4movsvt 4 ts h,qh/-d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and ygiucg/0 o2* xsphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly toucgg0 /you 2*xiched with a wire that is grounded. Which statement is correct?

  How can a negatively charge 77u5 rvrjfp;r:3i:rst w rzz-d rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charv4 ivv ;/xkm(+ z(1cwri 3avpdc*2xyoged glass rod. The electroscozm c(4x;ivvp2kv *r( dvo3caiy +w/ x1pe

  An originally neutral eler8dn3 c -kfk8wr/nm (ectroscope is grounded briefly while a positively charged glass rod is held n- d8rk/ ce m3wk8nf(rnear it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the (.2sh w1pbg9bs1a vah leaves separate. Then a negative object is brought near the electroscope, but d.9bs(11 havhpsga 2b woes not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insula/6g 89ok4 l) ziol4nu-ta ev 1idlyzsnm s+r::ted 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. At no time does either balruz : m8:e4tl1dol 9ygni/ns+)z-sioa lk6 v4l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Couc8l*:)guac/sc n1mbc lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separat 3hk7f:6ew qwzed by a distance d. The first charge is larger in magnitudeh36ww kf7z: qe than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are 2l,3oeg4p pea placed near each other on an insule2gp, p 3lao4eated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each othebn:z9vqpk7, vr with a certain force. If the charges on both objects are doubled with no change in separation, the fp7zk, q:v n9bvorce between them

  Two charges are separatvh7zfz +5:t+i f n6svmed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distancffhvs7ztvm5+i z+n 6: e of d/3, what are the new mutual forces?

  Two charged objects att ,p(rsp3 g2bobract each other 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-fo, b s3rpo(2bpgurth its original value? The force is now equal to

  An electron and a pro8nnsf/f 7 .jmjton are separated by a distance of 1.0 m. What happens to the magnitude .jjn7nff s8 /mof 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 o3fhb bv,e/s7h cz-g ;au;lqg7 f 1.0 m. What happens to the magnitude of the force on thghze,;usv3/;-b g 7h7fab qc le first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m.n kadb8x 9j*+p What happens to the size *p9an+jbk 8dx of the 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 centea23c6uukeop ap +rdg ux* /;u5r 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 forced ae ;u*/+ gp 6x5ukpuo2cua3r acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateb07 y7 tdya*wox 6ea7iral triangle. When a second charge of +Q is placed at one of the tr*d6y we b7a077iy oxatiangle'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 vertices?

  Which of the following is.c0 4(p)ex +uvrmbxyk2py wq;5b t-ps not a vector?

  At twice the distance from a point charge, the strength of the ehbz2/g x5 :pmafgp :h9lectric field

  Is it possible to hav9cu6c(f 7y -glv3 wrkve a zero electric field value between a negative and positive charge along the line joining the two(69vg 3ur 7ycv-wfc lk charges?

  Is it possible to have a zero electric field value betweenn+s+ 3jc:.8f hsgw8pzmp x 5cz two positive charges al.gj: sm5ph +cf 88wpcnzs+z3xong the line joining the two charges?

  Electric field lines near psd/n n2 ldcrgyr. .9hn9itive point charges

  The electric field sh-uat1 +n 7qjj p,ltrq9own

  Can electric field lix-;v h/k iu2ovnes intersect in free space?

  A solid block of metal in electrostatic f(15bi-wh 9fx/ghuzn equilibrium is placed in a uniform electric field. Give a statement concerning the elufn5- 9 1x/gfh(wzhibectric field in the block's interior.

  If a solid metal sphe1i1j4l9 xfeib re and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the centjb iexf1149l ier and the surface is

  A cubic block of aluminum rests on a wooden table in a region wheb6;;x khlid )set0 it0re a uniform electric field is directed straight upward 6di00;h e)libt kxst;. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an gsme 7nw8x,8 zelectric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedu rpko,k(e2m,+8 pbbge(hs n8. As compared to the case without the hollow sphere, the electric field at a point directly above tgpn(8h8k(,+sb2 rmobp keue ,he hollow sphere has

State three properties of conductors in sta7g7 odo (9e vlbcaxjm-,fnx59pvr/x -tic equilibrium.

State Gauss's law.

  The charge carried by one electrclqpk* d /6q4 :;gglzmon 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. Hal m,xn.o 91xh:fg7llow many more protons than electronsn l,:xgxa m.lflh179o does this piece of plastic have?

  What is the charge on 1 kg of protons?ynl*e 7a; *rcr

  An atomic nucleus hasynk7 bw /4ngx5 a charge 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 charg(i85 uuoqkjne:7 yr1kyii2d:e values of 2.0 and -4.0 mC, respectivel 8yq iu(kon:iy2d1ei:ujr7 k5 y. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c)b,w tgp4,buiharge, and the force between them is 1.0 N. What is the magnitude of the second i,g pw4b,)utb charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they+azj i)3 *unzk?

  The force between a 0t9*)kza.cs9r )eal o3snmqk $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.mkp6vjy3:jevh h0g)r e. 9ah) 0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8ej9hrj3 6ahv)e. )p:y khv0gm.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC fhpows*031ea are placed on the x-axis. The first charge is at the origin, the s e01ofhasp *3wecond 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 placed on the x-axis. A charge of +2.0 mC is placeodss4 kk-9*nmd 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 *d4n9koks-m s electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 gzbgi ; yh z.6k.-7jkgmC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -z.jy; g6gb7g k-kh z.i5.00 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 center of a square, an3l jzh)a-:sl;hxl0e qd 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 placexa:q3 lhh z;) sle-j0ld at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 mgcq u fx8:4qu*); Q3 = 5.0 nC is at (0, 0). What is the magnitude ocq8f4u* g:xquf 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, u9 kra .8c3ah7sqcee2 jngc;; 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the necaes7acq c3.e ;nu2h98 ;rgkjt force on the 5.0 nC charge?

  Three identical charges of 3.0 mC aqvj*/a6gq h4hl :*gwe re placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whgq * w lhvahj6g/e*4:qich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are ohas7 ;. is,amn mom,0separated 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 acting on it would b .70om;, ihsas,omma ne zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Wherepo 76rk .nc+m5kxxou + on the x-axis can a third charge be placed so t+ kcuopkxr.6o+ xm5n7 he net force on it is zero?

  Charge +2q is placed at the origin and charg/2c bhwe t), sbux+(bze -q is placed at x = 2a. Where can a third positive charge +q be placed so th)s /e(x ,tzbcbwu b2+hat the force on it is zero?

  A copper penny has a mass of 3.0 g. A c 0bgaeq4( we1total 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 o) yz.ut -m07v klnuceos(5.vqf a fixed proton some distance v 5qym 7z-coetu0( v.s).nul kabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung frohmf/0 2ydqi ,vx+t8aum a common point by nonconducting threads which are 30 q d/ 80+ymu,tx2aif hvcm 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 isf5fg4k;9;k q3s lz nj6er6wvu the magnitude of the electric field at a distance of 1.0 m from the 934fqfk vj6; ;nzwe5skur6g lnucleus?

  What are the magnitude and direction of the elect;/pj0 sh vopyqb5huc d -/0:omric field at a distance of 1.50 m from a 50.0-nC cha/h; /spm :hcdo -0yjb50ouqpvrge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudesnw9.h 4,k4p w sgir1n of the e1hw ing4,w 4.ks9p nsrlectric field at the location of the test charge?

  A 5.0-C charge is 10 34;v)d9 alwm.g p qr3 jqwixj6m from a small test charge. What is the direction of the electri.aq v d j4 x;jlw3g3i9pmq)wr6c field?

  A 5.0-C charge is 10 m from a small test charge. d4 kka08fap(to 4jq s)70yxws What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test ch4wx)q0sok7k 8 t4da(p y 0sjfaarge?

  Two point charges each have a value of 3.0 C and are sepaf (.nkla7w+nw wxe7k 20x8b5wfwhs5c rated by a distance of 4.0 m. What is the electric field at a.bfen 5xwx7wwwl2a0k7c(ns+kh58 wf point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark k 65cxgqg5;u iyf8z4t 7joca0of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 3ozci5 67u4;t8gjq 5 cx ky0afg0 cm mark?

  A 5.0-mC charge is placed athwo(u050b/k*lsli1 fp fhsb 9 the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j*h ofw9u/fbh1ll5s0psib 0(k oining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x )igg rgth l lu o/c31l(og3756pc3qkkzns*i := 0.20 m. What is the magnitude of the electric field at the point min133gr :5kzisk 3o( c7q*lc l/hg )tpgiuol g6dway between them?

  Three 3.0 mC charges are at the three corners of a square of sideql ;bb:;8v t1xay7b 3;odbjowq:sdc; 0.50 m. The last cornobqjdb;; bb a; ;8ox 7dlw:tvq:3 1scyer is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 hv t i/4 baw+oktg(6s8m on a side. Charges are placed at the corners of the sob/iha6w( t st8k4vg+ quare 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 at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when iteo3 n 5 u(msb 7bq3kss18r9rij is placed in a uniform electric field. What is the magni rir3q9m o1s(3ebu8jsnb7 5 sktude of this electric field?

  A particle with a chargei4 ec7deh +-op of 4.0 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 poincv-lu*tf r x+ xdfp8 a)j+mf((ting downward. What a*mfp+ -+x rv(t( )jffc8dlu xcharge 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. T-c,7d3 2s1e0bv kw: uy mst0ao)n3pnbl /rrzihe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the m,r:2- )1net/ sswa3kyulmrpo 0 v03n7b bzcdi agnitude and direction of the electric field?

  A metal sphere of radius 10 cm caid1lm-zm nf*7 rries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the smni 7zfl1m- *dphere's surface?

  A metal sphere of radius 2.0 cm carries a chargedx ja,ll,nt l v(dc/l77z 1-wr of 3.0 mC. What is the electric field,na ,wt 7cl/l7-zl(xlv1j r dd 6.0 cm from the center of the sphere?