State the law of conservation of ektxkxf::0 6kr lectric charge.

  Is it possible for two negative charges to attract each -q s7gz8xrva 4other?

  Is it possible for a positive and a negative chargzuut2cylags, g fw* w- fo(-20intq; 6e to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the o7f 76l qw8dznw3kax ;glass rod acquires a positive charge and thlxk87z w a;3n7o dq6wfe silk

  A proton carries a

  The model of the atom shbp.djw7.h4lnp n)q 4a;t1 fqwows a

  A neutral atom always hw*/gt/ 1uy/ fhe6geke as

  An atom has more ele58;bvdsr ,nas4yz8 vmctrons than protons. The atom is

  Materials in which the electrons are bound very tightly to the numgmvi8.n7auo; y8 f+;ilu c.uclei are referrenla g+m;vi;y8 f cuuu..87io md to as

  Materials in which the g8hfgk5z7dd lj+bi3 )electrons are bound very loosely to the nuclei and can move about freely wi ddkibg8l+ 7zh3)g5jfthin the material are referred to as

  A negatively charged rod is brou8o )2oizhip8vm1fh2 i5cr r9ught near one end of an uncharged metal bar. The end of the metal baroiru58 1mp r92hfh)c2z8ii vo farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. 9oc3kce t,a;v2vmyh 6upf9p7They are placed near each other on an insulated table.7e,cpo;m pakhct 32v9yvf u 69 Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscw ;dlp+q4ov ;lxjv2k 6ope positively?

  An originally neutral electroscope is briefly touched with a positively chu7hqwd /h+;wp.f8;8pe96xa jx2nc+ q vusghlarged glass rod. The electrosco 8;/uqph+ge98 a 6q27 hlhvdww;fj.xsn cxpu+pe

  An originally neutral electroscope ;nu9tdq)dhzarbi um8-5+im 7is grounded briefly while a positively charged glass rod is held near it. After uiiq8 9z)5a; dd7tmu+h m-nbr the glass rod is removed, the electroscope

  A positive object touches a neui be 5srx(b- 5htu,+f7 s3mbgttral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not( t+7ig-t5m b 5bfub,3 xeshsr touch it. What happens to the leaves?

  A large negatively charged object is placed oq 63 n.;zlrnnyn 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. At no time does either ball touch the negative object. What is the final charge on en6r n;ny q.3zlach ball?

  Charge is

  What are the units of the Coulombbe,2 o)-1y xb (od oj+-vfllgyq8am xt7gu*w* constant $k$, which appears in Coulomb's law?

  Two charged objects are sep4 z55m q9acf ,gc7cm+fjj )kybarated by a distance d. The first charge is larger in magnitude than the,g 5kcmfc y7bfm+5 q9z)jaj4c second charge.

  Sphere A carries a net charge and sphere B is neutralm6p wype2kpiwn /e9ml7wj( ukr7qle(b0b0:8 . They are placed near each other on an insulated table. Which statement best describes the elec j( l kpblry0 7neewbpe98(m/7k:m 2ww6uqi0ptrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg,73hv lvwf)g fes on both objects are doubled wit,vf3fghw7 ) vlh no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual at v3or1o 0z1(qkjmva-itractive forces of F on each otheroojzak-iv3rv 1( mq1 0. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What ha dr5qt48-o -*1s h3q+jslg7 eaqip pwrppens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers- pd8 +g*qeqo4j5 i-ssr1q7ahwp l3 rt 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 m. What had ap h20,lnwu)sh,m ;dppens to the magnitude of the force on the proton if a second electron is placed next to the first u; m)h, d02, hpndslawelectron?

  An electron and a proton are separated by a distance of 1.0 m. What happezo+ ub hn0:7t)9bkupons to the magnitude of the force on the first electrono7b0p9 uou )th:+b kzn if a second electron is placed next to the proton?

  An electron and a proton are separated byh;e ;e,8ep- er*afbtax y66ed a distance of 1.0 m. What happens to the size of the force on the proton if the electron is x*dyafeb -8htre,pa 6e 6;; eemoved 0.50 m closer to the proton?

  A point charge of +Q is placed at the n8helf///deh)cna b- 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 squa )f-nbnlc/e h/8heda/re'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 wjdlv6lz: o 52placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at on2w 5 zlloj6d:ve 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 one of the other vertices?

  Which of the following is not lxynzq2wn,f*ng3 ,jvv8: /i z a vector?

  At twice the distance from0qy rfmcfn9 ,3 a point charge, the strength of the electric field

  Is it possible to have a zero electric field value between a negative andg)zv6q0 kq1)b;ion vq positivz)qi gn6 boqvq01 )kv;e charge along the line joining the two charges?

  Is it possible to have a zero electric field valuz 8*o(:t4 5dxvwals)t yf;ecj e between two positive charges along the li ye( wt :4oxdjfc 8;)5*slavtzne joining the two charges?

  Electric field lines neor (bei64kds1g:c)v-a hfzt2 ar psitive point charges

  The electric field showwco/ ad8v:iua 2x9++ts.f fcqn

  Can electric field li h*61bju1sgrkx uq;3 tnes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform elehwf16 28,gdj5hl vrguctric field. Give a statement concerning the electric field in the blockg5r,v6w1dg2 hluhj f 8's interior.

  If a solid metal sphere a6pna5/wms8j l nd a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the sur/lpjsn5a 6 m8wface is

  A cubic block of alum t/(46aqcch-6jlwru m inum rests on a wooden table in a region where a uniform electric field is directed straighq(aj/hml 4ccuwrt66- t upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrof j- u6yle1ck bl36sx/3iis b3g34msastatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphe0gan sfui4.kht.t 0i9re that is grounded. As compared to the case without the hollow sphere, the electri i0 gn futi4t..ak90hsc field at a point directly above the hollow sphere has

State three properties of condb;2wzlh vl ,b*uctors in static equilibrium.

State Gauss's law.

  The charge carried by one eoc4sxc: f 0u2v8vig/qlectron 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 marju9t 7jwy t47ny more protons than electrons does this piece of pljt wuy94r t7j7astic have?

  What is the charge on 1 kg pzth t.i z39e* x5fp-mof protons?

  An atomic nucleus has a charge nxw9lyto4; fs)o /g7kof $+40e$. 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 valuescud+p6 1ehipxfrbt*3+ j7la 0 of 2.0 and -4.0 mC, respectively. What is the magnix6c+ead 0b*3u ir1j7tl p p+hftude of the electric force between them?

  A 1.0-C charge is 15 m from (, kv;z elmr1axt,5) axl4gcea second charge, and the force between them is 1.0 N. What is the magnitude ofkg,14l aae)5,t(cxlz ;emrv x the second charge?

  Two 1.0-C charges have a force between them of 1.0 vfou f*5a2 80cq7ra+icsm)xdc ))akw N. How far apart are they?

  The force between a yauj mv+2 8r1(3mdmdb $30 \; mC$ 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 v9;gkqn i .,vdforce. If they arei,vn9vkqd;g . moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed usl. /f9 woy)eon the x-axis. The first charge is at the origs)oe9 /flu wy.in, 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 psg5z8bf, 3uu:4f8kr i2qplwu laced 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 on the charge f3824qz:kblsw uf 8r5i gpuu,at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = mr.04o g n5vy,ygcx k+1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude 05nm,rgcxo g.k+yy v4of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of dbm5a +uyl(yw be3y-ktpz .65a square, and a second point charge of -Q is placed at the upper-left y. ma5-blke( yzbdyu3tp6w+ 5 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 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nCigma(d,q :z3f is at (0, 0). W:z3 gdqmi (,fahat is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.39m5 lumn,n t-ua4--0q, zz/j yhg fqgg0 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on thqfz-- nzh uy09/glq,tg jg4a-,5umn me 5.0 nC charge?

  Three identical charges of 3.0 mC are pla23a9z*v -lmdg4sj aph ced at the vertices of an equilateral triangle which me l2mhpsjgzaa9-vd4*3 asures 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 +Q and +4Q, which are separated by 3.0 m. At what po(5 msv;ub3jy kint, on a line between the two charges, would it be possible to place a(y u;bs53vjmk charge 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 = 4.0 m. *n6. -gxqx, e iibaru.Where on qi.nx-uirea6*x.b ,gthe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -j nbtu33 )4zx c;pa6vnmv)p 7oq is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is m j;bx p4)ta73vucpv)no n63zzero?

  A copper penny has a mass of 3.0 g. A totaldkp;fohg94-,z /clvg 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 attwyaovd8kkr kc bpn5385/1 1dqraction of a fixed proton some distance awq /dr k5ky1 nkd13 b8c58vpaobove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by no8uap3 guin2g,t m *9mw b0mqp;nconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic rm iunmpq 32,ubm0 p wg*tg;89aepulsion 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 the mag saiuxt ws:q0 e;/rvj+r5. )nznitude of the electric field at a distance of 1.0 m fr5 a xeq:;/v.0unts)r +iw rjzsom the nucleus?

  What are the magnitude and direction of z 3 sfzlxde 60.zt*n1dthe electric field at a distance of 1.50 m d3 ne0lf* z1. ztzdsx6from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. g(i pwtt. ad4q6d:e (h What is the magnitude of the electric field at the loca(tgq(6d4h:eatd p w.i tion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirys9 au90i ysr/s(f m-yection of the electric9uyfy9/s -0asr(s m iy field?

  A 5.0-C charge is 10 m from a *y.g,qm7w kmqu7cf)+t g.jv g small test charge. What is the magnitude of the force experienced by a 1.0 nC charge plvg*tf,) 7quyqc. +w.7m gmjkgaced at the location of the test charge?

  Two point charges eachtc9a- xhpmuqor)q5hw )ups0z +;t;0d have a value of 3.0 C and are separated by a distance of 4.0 m. What is the e t;0)qwd5c oq0authrm+z-)us 9;pp xhlectric 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/py5vl2j. or9dagm tq(k9.lc+ 7 gdim a -4.0 mC charge is placed at the 50 cm mark. What is the electric5.go2m.j mi+tdyrql/ad9k9( vglc7 p field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ando m9zqyc4abrxs0;kgx n244w) a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two 0yqmxoa4) 2rzgkxs ;4ncw 9b4charges is the electric field zero?

  Two point charges of +3.0 mC a v6q jmiwc0xsnvw:.)8 nd -7.0 mC are placed at x = 0 and x = 0.20 m. What is w6:8)i vcn wmjvqs0.x the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the thre ctf/nycy4+ohs3q;nt8 cy qjg;;5ke )e 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 jy)ke ts85;yh/ot4yc ;f+ q3nncqg;c the square.

  Consider a square which is 1 woq;w w8oa4dzd0;f9 g.0 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); -3.0 mC at (0, 1). What is the magnitude of the electricz8 gq94;dw;w0fowdo a field at the square's center?

  A force of 10 N acts on a chxhy.(-8 h:c k .hnw4web1ggjaarge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this elec(e:nw.gbh1 h-kh4ag.j w8cyx tric field?

  A particle with a charge of 4ry ,wit;3xq4v .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-ixsw p/; f b8u70wlbu placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball slixwub80 -b 7;fpw u/for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball5 ((sm xhfm5rhs/bml ; is placed inside a uniform electric field, and is suspended against the force of gravity5m;m rf(5msbx(hl hs/. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charg7kacij+1 3k zmn:ia: 9 )t.l mhxyops1e of +2.0 mC. What is the magnitude 19 jn1.pa:i k+:m)3ay limxoh7t ckszof the electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius zdj.v udui0dsxmos ) v ug-.:729d)wt 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm d.w0o:v j7)u u.ddt9)z-d mu xi sgsv2from the center of the sphere?