State the law of conservation of electric c pk0fp3zs o( l/b5z6lc jmq+c7harge.

  Is it possible for two negative charges e ry8 2jxbfy+)to attract each other?

  Is it possible for a positive and a negative charge to attraco aa9+ yvv.p9ft each other?

  A glass rod is rubbed wjrz23mzz eybc l3g 0w3psd-16ith a piece of silk. During the process the glass rod acquires 6zbjp3ms 3 gwl 03dzreyc-12 za positive charge and the silk

  A proton carries a

  The model of the atom s k hr4+,vinteu9iwa(hi-j57 uhows a

  A neutral atom alway nyhkykkvb0+sv6n 0(b 8ppc +1s has

  An atom has more electrons than protons. The uhjg6vnh czqtej;, /kd02; ;m atom is

  Materials in which the electrons are bound very tit*u/3 dfws/n pghtly to the nuclei are referrew/ds3f tu/n*p d to as

  Materials in which the e,fcyvz)3y ej 4lectrons are bound very loosely to the nuclei and can move cyv )fy4j,3ez about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged me;ta08. 8ysa9ir- xe*snd lrwktal bar. The end of the mer;-iax*s ts0e98lwa. k 8rdyntal bar farthest from the charged rod will be charged

  Sphere A carries a net positive cha*, m 3/t icwc;jlxl m./;jww iymaa57yrge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brief mxm 7j/lww,m;/c;a.wta3ljy5 iy *c ily touched with a wire that is grounded. Which statement is correct?

  How can a negatively ch4tldm:; ir o6yarged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chargedd xg)d(5,gf.d1iq srf glass rod. The,s )d5id1 rf.gqfd(gx electroscope

  An originally neutral electroscope is grounded briefly while a posizs g9mskcg /)4ly2 pici-qx(, tively charged glc94,2i/ski)csq-g zylp (gx mass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, an-stj5)a cl37ao59v)fsmqek p d the leaves separate. Then a negative object is brough) ss95ctkqa)3va- lp 5fje7om t near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objecdrq *b9 +eayt:t 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, strik te:yrbadq +*9es 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 the Coulomb constant ;ntvw14g3- 1e pr)f8uyxrp o m$k$, which appears in Coulomb's law?

  Two charged objects are separated bt8.qh7l 3mulx ( j owlxc,d,p4y a distance d. The first charge is larger in magnitude than the8c q7odlmu 3l,4lxwhjtx, p.( second charge.

  Sphere A carries a net charge and sphere B is neutral. They +p4r4wj)f1o w bhk)cw are placed near each other on an insulated table.r+1fcj)4 wopw4)w hkb Which statement best describes the electrostatic force between them?

  Two charged objects /xxy pve+)dc6attract each other with a certain force. If the charges on both objects are doubxc x)6pvd+ y/eled with no change in separation, the force between them

  Two charges are separated by a dip2ay qnl9uj.8ux5 6trstance d and exert mutual attractive forces of lputq xj9.5un8r 6ay2F on each other. 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 happens to the z qzu quq-b:bv )e4u0v7ze39mforce 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 origina quq uzzm 40 -vq3eue:b9b7z)vl value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. What happewls 0)so7 e +w)vym pva5*b6sins to the magnitude of the force on the proton if a second ysvv*a0s+ ewwim)l6b)7 s 5opelectron is placed next to the first electron?

  An electron and a proton are separa*s*ypfbgc4o4-ftw8 /hkr 4,o+st fwsted by a distance of 1.0 m. What happens to the magnitude of the4ofw/b ,8og*-t sfw4sph+rsf 4kyct* force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distanc6/q0sujm*t owbk -m0 ue of 1.0 m. What happens to the size of the force on the proton if the elk0mut so0 6q*uw/j-mbectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at +og wpc+cqj-+vkgj, - the 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 square's center. Now, identical charges of -Q are placed at the other three corners of the square. What is the magnitude ofo,gjcw+k- c+v- jqgp+ the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is py y 5 mr;ni*ax*2/rrqq9 (misklaced at the centroid of an 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 force that acts on the center charge due to a third chargy59qr;r imk2q*(r inay xms */e of +Q placed at one of the other vertices?

  Which of the followin5hw3e1)tip wbg is not a vector?

  At twice the distance from a point charge, the strength vobrt- z b to0)275npuof the electric field

  Is it possible to have a zero electric field value between a negative r8yep qx5b6ukm/2 kl(and positive chark xlqr/mk 6bu 52ype(8ge along the line joining the two charges?

  Is it possible to have a zer80q:aizwjd e+rk 2 +h7a)yq oto electric field value between two positive charges along the line q e +zqak:)dr7t82jiwah+0 yo joining the two charges?

  Electric field lines near psitive+cf63lzld )wazy*1k tqvf h-. ryf61g point charges

  The electric field srbs*fa el6 xc)3160kt2w nzpxhown

  Can electric field lines intersect ll2 - 44e /rg)gfl2agikp v9zlin free space?

  A solid block of metal in elejw o 5li9vwf48ctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's i94i8wofwjl5v nterior.

  If a solid metal sphere and a hollow metal sphere of eq(j*r7 tv8u tcaual diameters are each given the same charge, the electric field8(7crv*t ujt a (E) midway between the center and the surface is

  A cubic block of aluminum rests on mo2 l7,r c*giau2+eh je upe54a wooden table in a region where a uniform electric field is directed straight upward. What can be said conc22+eh*c,ie7m j4au 5 gourpelerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an el6vi)o4x mr0n 1 1cwjbaectric charge

  A positive point charge is enclose j t89vwh( uexkh,i;z-d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elzuj 8 w9iexh;,v-kt( hectric field at a point directly above the hollow sphere has

State three properties of conbmk15w5 0qhd 3.0rvjsv fb,prductors in static equilibrium.

State Gauss's law.

  The charge carried by one ele()js h*c:2h 9pzbsd i-nj1bfc 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 more pr0yo ;-b2e6br xc 0mysaotons than electr bayobrx-y00m c62es;ons does this piece of plastic have?

  What is the charge on 1 kg of prot(h if2h ebe:d-fje hb:x)*n3 qd5xd1 pons?

  An atomic nucleus has a charge1dibn6b s3n0v of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.n 8np rq(6a( sm6dc(jt5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnj qtcn8(ar6ps (6(d mnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, fq3gmp r/bx;+(:v qg vand the force between them is 1.0 N. What (vqxgmg:v;3f /rpb+qis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1a5/nnu,jb5i 0rw/f, nuqeuo spu k(30.0 N. How far apart are they?

  The force between a /tfhvi 9i(s 5j$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initf;q u513d.9 knagw cb/8izh (yqakxh+ially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separ+;xd qk zw/9fc(qay i 35nhh1ab 8uk.gation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on 32ea tldzzk 3w ln8(u;.kg;elu0jc 8 ythe x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at th 2ey;znluaz3 3kkl(;ug0 c8.8ewl djte 100 cm mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges y-1fqu k1 gso0uiu jl9oz*-4d)ct7mgare 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 th-goi7 *4yt-mk9zld 1 u1)f gc jo0usque 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 locatrkx b8n -ge:b2uuh:wawlv l(),gg0iy dba/ 56ed at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = n 0allhrukgd ,w wub vag8b byxg5i/- 62(e::)-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, an2hiy/ ic6rh :nd 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 placed a6:in/ cyir2h ht 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 = 5.0r u22yorm 8 dwf bp8p6s pt(2bev yqqsa8d-,1/ nC is at (0, 0). What is the magnitude of the net force on the 5.0or-a8y8b spswqy/2ufd6 etm8q r22b(d1pv,p nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2qj( n2)out1t gw)be x. = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the diret2.qextuwnbo1 )j()g ction of the net force on the 5.0 nC charge?

  Three identical charges w7,vprqsa g(cqm q1c6h c0,)iof 3.0 mC are placed at the vertices of an equilateral triangle which measures 30,mp6qavs1qc gihr0cw7 (c),q 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 separr5/be4rkz :q ar-ppt(ated by 3.0 m. At what point, on a line between the two charpabqk5r(rez4/:-rp t ges, 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 origin and a +9.0-C charge is at x = 4.0 m. Where o,8so sdvq(9;(n8y3hshfz vbk n the x-axis can a third charge be placed so the net force on it,ss ob; hnfyz(8d8 vh (93svqk is zero?

  Charge +2q is placed at the oriyhsx1gvdza 8 j(17a;w gin and charge -q is placed at x = 2a. Where can a third positjs81y 7;wv1x adazg h(ive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.35bxsq18dd*5u0r jsh z v k/it0 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:e2d8x/ fubcb the attraction of a fixed proton some distance above it. How fbbu2dc x8f:/e ar above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting thferxd,0x3 j v1reads which are 30 cm long. Both are given r 1xxjf3v, 0deidentical 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 is the magnu*3tjvvy; n j0yhm/7i8w;r ckitude of the electric field at a distancer yv8w37v t* /0yhnmc ukj;i;j of 1.0 m from the nucleus?

  What are the magnitude and directioij( r-lb4 u(fzn of the electric field at a distance of 1.50 m from a 50.0-nC ch ((bluzif-jr4 arge?

  A 5.0-C charge is 10 m from a small du 18 lplf8.rytest charge. What is the magnitude of the electric fi u8. lld1frp8yeld at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the (- z )lqpynvn+electric fieldq( l-n )+pznvy?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the fylmd 11gn 2:f.ve;cu oorce experienced by a 1.0 nC charge placed at the location of the mg;v df2ln.oc:yue 1 1test charge?

  Two point charges each have a value of 3.0 C and are separated6 :z(9 onakuql2gpo h( by a distance of 4.0 m. What is the electric field at a point midway between the tw:hgkp((q2 a9 zlo6u ono charges?

  A 5.0-mC charge is placed at the 0 cm m15,bf9bze,5a nyw asu85nw rj ark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect ,8sw,aen9z5 rwynf55j1bba u ric field at the 30 cm mark?

  A 5.0-mC charge is plnai7vh.)- 8,vxjgm 9 . runspcaced at 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 joining the two charges 8vn,) v.xm9j7i.ghau pnc- sris the electric field zero?

  Two point charges of +3. -z (jnvw//yfz0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric fi(f/z jv/wz- yneld at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50rki2;ff+a 33ge4w lk bwix/*t m. The last corner is occup4* 3fib wxti2/ gk rfakw;l+e3ied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a shb)i xd: zo9o(ide. 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 oxz)db h:9i o(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 electx:8o ,eoydhf7iv/o l,pop /*lric field. What is the magnitude of thip /, po,looxylv/o7d *:h 8feis electric field?

  A particle with a charge of 4.bw-tgw) mdunjwjlj *a)9g,3cm6 -e-u 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 8vm puiphdh+vt h;3 *g24qnp7is placed in an electric field of 6000 N/C pointing downward. What charge must be placed oigm7+ 2uh8vvq; *phph3dtp n4n the ball for it to be suspended?

  A foam ball of mass 0.150 g carries q5 zrn;fvu: 6ha charge of -2.00 nC. The ball is placed insfzuvqn;5 6hr:ide a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge 4/0j5 gv,jg ws. sb aso+ y*zlweraw:dyr/r2-of +2.0 mC. What is the magnitude of the electric fielay.z-ssw,ro4w rb02/:e lyj +gg*ad w rsj/5vd 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whats jz.+.y5j5z.oc4su+kk 6ykddfn/f o is the electric field 6.0 cm from th n5ysyso+ 6 d./jf +.ckzuo.k5djk4fze center of the sphere?