State the law of conservagi73d.sq ii27bh,y a)gj: b zation of electric charge.

  Is it possible for two negative charges to attract each otx ,pu8+ c gburvw;m1o5her?

  Is it possible for a positive and a negative charge to ag g*p)pq:isa 9l(l5 .hm*wmme ttract each other?

  A glass rod is rubbed with a piece of silk. During thox) (iucmur04e process the glass rod acquires a 4mx r(cuo ui)0positive charge and the silk

  A proton carries a

  The model of the atom show05 zn sob+a,wvs a

  A neutral atom always ha9gbcz5xe5 23r k ivszdn7 np-ht2q,w 3s

  An atom has more electro, :/f9 ytkngvkx (k 5oy.mx2sf+b2plmns than protons. The atom is

  Materials in which the el cugmwb.; xa7). ktl5dectrons are bound very tightly to the nuclei are referre; lc. mugb5.wdx7)atkd to as

  Materials in which the 7n. xlx;8 ax3dd6thtdhw(. rn electrons are bound very loosely to the nuclei and can move about freely within the material arxxd3 x.n6tnd8hr wha(l.7t;de referred to as

  A negatively charged rod is brought near one -q0 kja,svg w:end of an uncharged metal bar. The end of the metal bar farthest from the charged r,s:a g0wqj kv-od will be charged

  Sphere A carries a net positive charge, and sphereht;.h.s mgpdb *h5ih* dztbb;s.y +i 1 B is neutral. They are placed near eachdsh+gy*p5.htit.b b. him*z h1;;bds 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 powuqv30,-91pd ijf aq t:;n zabsitively?

  An originally neutral electroscope is briefly touchef9els7 zqx4f4 d with a positively charged glass fsf xz4l4qe79 rod. The electroscope

  An originally neutral eleco7k (o-x zxlps:a6: iytroscope is grounded briefly while a positively charged glass rod is heyix :-z7( 6ko:xao pslld near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscohd;x7ux 7g5mc pe, and the leaves separate. Then a negative object is brought near the electroscope, but does not tcmu7 ;7x5hdxgouch it. What happens to the leaves?

  A large negatively charged object ijpil2 n8tya9 9s 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 obje29tilp9a nyj 8ct. 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 pr:h8i,mlktw4fn u ;9 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sep/hxn33j3szdm-s 0wp uarated by a distance d. The first charge is larger in magws3u0m 3/js - pd3zxhnnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They c ;-ajvuu f5y2are placed near each other on an insulated table. Which statement best describes the electrostatic fuyvf;5 -2ca ujorce between them?

  Two charged objects attract each other with a certain force. If the cttgzi ki2a--m2v m4q4 harges on both objects are doubled with no change in separation, tgzk-i-m qmta244 vi 2the force between them

  Two charges are separated by a distance d and exert mutual attr)wu.ati rl-o/ active forces of F on each other. If tiowr)u a-.l/ the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attra,2cug kus i*/uct each other with a force F. What happens to the force between them if one charge is douskgc *,/u 2uiubled, the other 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 separ,j3x(e s0w*d+csd-tmoq ) pulated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a secondue mod,csld0t-(wx*jqps3)+ electron is placed next to the first electron?

  An electron and a proto3y 9dv dxr8x77xtco,on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electroc,8d7d oxx9v73tyxron is placed next to the proton?

  An electron and a proton are separb bs)ooxlsr. i/*2f5k ated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m clo 2ir. *fl bxosbsk)/5oser to the proton?

  A point charge of +Q is placed at the center of a square. When a seca3jx*w1n20s4 54xws dssxvcg ond point charge of -Q is placed at one of the square's corners, itva0wsx53 ssxx2w g1*4dj4c sn 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 center of the square?

  A point charge of +Q is placed at the centroid of and z:p-oqd6-hw 9j l77lird;uj 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 z:ih7od7wp- 6rjdulj-q;9ld 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 not a vectol tj1s2;f /v;adeu0;vw4t;cuyv7pjc r?

  At twice the distance from a point charge, the 2cgtr -j8uo+g strength of the electric field

  Is it possible to have a zero electric field value between a kyxso7 ;q+rpc meml *1e9q7q7negative and positive charge along the line joining the two chao+xysmer 1;l9q7c e7 k7qmpq*rges?

  Is it possible to have a zero electric (5 1kujrs 7vuyfield value between two positive charges along the line joining the twuujkv1(yr7 5 so charges?

  Electric field lines near psii3ff: hs0 6 jko. +k7tpexffh4tive point charges

  The electric field shown 2w6d9w ut( yk+y7ddkkk6u-;ipps q3a

  Can electric field lines intersect in f1zco+s8/brup l itfj19 yx7 )oree space?

  A solid block of metal in elzi86raxw;yu ,-5i aog ectrostatic equilibrium is placed in a uniform electric fieu-6, wg8x ari;ayioz5 ld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters 5:qvnib3g.mj0k3 emsqf(o kmcy m28 ( are each given the same charge, the electric field (E) midwaynmiqc my8j(5f 3 g oq2m0 s(mev.:k3bk between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regionuul,wi3o1 (f c where a uniform electric field is directed straight upward. What can u,l(wi uofc1 3be said concerning the charge on the block's top surface?

  If a conductor is in electrostal6f* wivxky gm 4ca3eh ;67mk5z4yev;tic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphereatzdok)wq +u /z9*1 yd4yyda- that is grounded. dd zy-+9kw)ud41ay aotz/ q*y As compared 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 s- ;q6pzazmho2tatic equilibrium.

State Gauss's law.

  The charge carried by one electron is y1cs+q7gqij4-zon mz4sdskv u-x2 7;$e = -1.6 \times 10^{-19} \; C$. 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 more protons than ele kav 1go:croz4)ue8. octrons does this piece of plastic hk z.8:4g1c v )oeouaroave?

  What is the charge on 1 kg of protlxz:zyp(x bk bc.9 5y,ons?

  An atomic nucleus has a charge ofvwmou hp *(8wprx* 61b $+40e$. 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.,iagu3- ph/rmt3, hdlh d7 +ww0 mC, respectively. What is the magnitude of the electric forciuhhdp,wm3h r - wg/+l3a7d, te between them?

  A 1.0-C charge is 15 m from a second charg /3pu ngqlvikp6s8,d; eg-zd5e, and the force between them is 1.0 N. What is the magnitude of the second chargep3k n d5- ,8zilge6 d/sqvp;ug?

  Two 1.0-C charges have a force between them of 1.0 N. H7)h 9 5m2qbq5wyg 1krtsd tdx2ow far apart are they?

  The force between a * mfdt +oh)m /,s)eg2uv( othv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, inue:-k (dp9g48 k zbs fjd*u.yhitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, whyj ebskd*9fdu. g8-uh p(z:4kat is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. Twuy:b (y z0kau0o8dubu0b8 e1t14uzjhe 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 whu 0:tuj4k8d0a z z1b8ow(buuye 0u by1ich acts on the charge at the origin?

  Three point charges are placed on the x-aode klpgzq,f7:z/ v;+i+ uyo g+q)z4jxis. 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 magnitudfd/leyovq)g4;pz zu qo+7g, ++zk:ije and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thek-* ljnki ;i-r following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = i;-l-k r *inkj-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 center of a square, and a second poifa-58**ctdsmt( 4oykunc7 evzteqigf9 +. 5k nt charge of -Q is plac.ngae ok74+d yiqc 5(u 5-sme ctf *9zttf*8vked 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 lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 =la5v3ts( 5z bm -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of m(bs3lv5 tz5a the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC a8dls6+0x toe kl3v6p is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?xdpklvsal6 308 eto 6+

  Three identical charges ofmc2wqs 2nw3 k. 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts os.2qcw23mw n kn any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wha6ua7n sg r ewpspt+qx30q;8 4zt point, on a line between the two charges, would it be possibla7;sup p+6tqze wx04g8q3n r se 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 rjn ,b57nu5 a (wjfif0origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed nwjanu(7f if5j5,0br so the net force on it is zero?

  Charge +2q is placed at the origin anwn0i,fch tl.6 p)vz7f d charge -q is placed at x = 2a. Where can a third positive chargwvn),6 cf0ihz ftl. p7e +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. oyi ) ytu8lbgr2r(j+) 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 attractg 6vk,ahqb3qhdqi8f t8u 51: gion of a fixed proton some distance above it. How :85q k 1 fd ,gih6b83utqhqavgfar above the electron is the proton?

  Two 0.20-g metal spheres are hung from 8c r/vlod)( anae:6yca common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the lar:8/6)cvc y oed(n aelectrostatic 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. f6jktuuhn- ,r( 53yqa What is the magnitude of the electric field at a distance of 1.0 m from the nucleunk3f-(5hu6 q ruyt,ajs?

  What are the magnitu :) urk1cb(joqde and direction of the electric field at a distance of 1.50 m from a 50.0-nC chargekb)r j:q (ocu1?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud9 z w7b*-zk:mzm v4grvrqsz:8e of the electric field at the location of the test charg:kvz :wq89zb* mzgm-rs7r 4vze?

  A 5.0-C charge is 10 m from a small test charge. Whatid0mv iet(ha; s.j9* n is the direction of the elen;ds am hiijt(e9 v.*0ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude o g-yvfjjnd9(pl a;d*b0/ts o *f the force experienced by a 1.0 nC charge placed at the locatioy s *-abnt*g/fodj (l0jp;vd9 n of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distaofcp a9us8y64j5 lfn + u pu24k2)dbdnnce of 4.0 m. What is the electrid+bufp2s j5ya 48of)pun24k c6n9 ud lc field at a point midway between the two charges?

  A 5.0-mC charge is placed at th 5b(syr icvo.-e 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm marr-oy.(s bcv5i k. 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 -4.0a+d/ *xpz/uujq5qdh wip1 1;n mC charge is placed at the 50 cm mark. At what poi5*iqpn+x 1 azqwd/jhu 1ud;/p nt 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 and xk zk52xeaeaql/y/t4ib,t*. s = 0.20 m. What is the/ /ekts *5,4blqkz2atyxeai . magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges .8h7vszwi7u w10m ltw are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find 1vl mzwh ws.7u7wi 08tthe electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners :*hr:w7pa 9fgvnhtw63 a9xqb2. h blsof 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 *b:: v h q7ntwxs3gfa2a9.phrh 96lbw (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 it is placed in a uniform electr4 k*3tqciwm g9hbf+ n u9duj4ben-mcr2 0cd97ic field. What is twrck*dnimgqjubc0f h32e b499ut -4 d7c9m+nhe magnitude of this electric field?

  A particle with a charge offkhgv-,(9 ;i gupfo+r 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 f,ej 6scpf. l7bield of 6000 N/C pointing downward. What charge must be placed on the ball for . , fl6ecjs7pbit to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nCex0ter0sa:z ,. The ball is placed inside a uniform electric field, and is suspended against the force x, ee: tsr00azof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of ra g+ ).lupkdcoe1f 9ljn9dsq+6dius 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from nc9 o k6+qfdsl91e+lj up).gd the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the tb8uly )-. vf;*k hwqkelectric field 6.0 cm from the center of the sphk).8-w*qylt kbuh ;f vere?