State the law of conse tu2 eyqth1 trn0rj;m )*x)f(ervation of electric charge.

  Is it possible for two negative charges to attract each ot5iye d.jxwj6wtb s:y2x ywx 4x5d(b6j(c2r l 6her?

  Is it possible for a positive and a negative charge t-llzjo6-74wfmu ; jyadmuv lc.u/v0/o attract each other?

  A glass rod is rubbed with a piece of silk. During thepvxe+; /vn83 nl- nyhy process the glass rod acquires a positive charge and the silypnn-e/h xv 83n yv+;lk

  A proton carries a

  The model of the atom0mnykdg1 b)3l shows a

  A neutral atom always ha9o0,kz+brm kfs

  An atom has more electrons than p;3 utksj d 0pztaiw+dlq;2w2 6rotons. The atom is

  Materials in which the electrons are 26*ayd d lu0)n:bsl wpbound very tightly to the nuclei are referrsaddwlln *yb: 6 2up0)ed to as

  Materials in which the electrons are bound very loos+om-cspd1z 9x b un n.:biwp58ely to the nuclei and can mov bpznc 1ixn9p+ o-dbm8s:.u 5we about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged-wvepms ;z0 s2 metal bar. The end of the metal bar farthest from the charged rod will be cz w0 m;vessp-2harged

  Sphere A carries a net positive charge, and sphere B is neutral. They arwy8wryeput 87-7 2ldf iq 8lo.e placed near each other on an insulated table. Sphere B is briefly touched with a872tdw8 yq.p8l-r7 ulfoyew i wire that is grounded. Which statement is correct?

  How can a negatively charged rqvyt)fu:9h-c 4mnff i4 2ch*/+an cd xod charge an electroscope positively?

  An originally neutral electroscope is brie; 9kg7 ,a h.w;isiv*pabq /jltfly touched with a positively charged glass rod. The electi;bj;/ta9s*vwh g q 7k pai,l.roscope

  An originally neutral electrou6la9+le;(ha;b s u ncscope is grounded briefly while a positively charged glass rod il;a+l; cne9shuau(6b s held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leabeg/2i 684hannf ./tikpq7dxves separate. Then a negative object is brought near the electroscope, but does not touch it. What happdi 62ne gx7t ak/pbnf84.i/ qhens to the leaves?

  A large negatively charged object is placed on an insulated table. A neut0h0cifq : 7lt.d(kas u g/tyr.ral 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, strid( ut.hyqkacrg 0/l sif:t70.kes 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 qkn( b /a5zzmmx ir+mt z2705k$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first / / 8narr16ym.qa+fmzyj sz4ocharge is larger in magnitude t16sja 8/omy4 +zm./yn rqfzarhan the second charge.

  Sphere A carries a net charge and sphere B is neutral. They 6cj 6ofj-2zp 8kq;zhsu1i2k oare placed near each other on an insulated table. Which statement best describes the electrostatic force between izo 2h-zkoq8 j6 1;6j2ukfcspthem?

  Two charged objects attract each other with a certain force. If the charge:z ibp4mx1ml7 s on both objep4m m1:b xl7zicts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces9r t l;0n9cprk of F on rcpkn9l r9; t0each 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. Whauy6r h 4 dddh;k+j w f3):cb xwd7eo22:2ongwvt happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distancov h:rdc yw+ow2d22dej; 6nd ) 4xh3b7g:wfk ue between their centers 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 h+ogbc;q )yy 3bappens to the magnitude of the force on the proton if a second electron is pyc;oyb+3bgq )laced next to the first electron?

  An electron and a pro*agj;vz (w sw-ton are separated by a distance of 1.0 m. What happens to the magnitude of the fosg*zvw-; j(aw rce on the 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. What tfl,x7u7a,r*gw s *nl happens to the *xwft,,rguls7aln7 * size of the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q iszqb yl58a-2b/o bp;e v;etl+f placed at 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 2b8/l+otyf zbpqealb5 ;e;v-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 plah*ioy pd h4-4nced 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 hohyn*- 44pdiit. 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 a vxyi/rrqj f1 2bc bc+09ector?

  At twice the distance from a point charge, the strength of the electric cd ;a90zl-qnk field

  Is it possible to have a zero electric field value between a negative and:o-e4r/ 4(6k osxqo nau rriy0 positive charge r u-0 s rr/en:(6yxoqoao4k4 ialong the line joining the two charges?

  Is it possible to have a zero electric field value ben dxc k*8bpyyg,+ fh:e3j evuk4l/u62tween two positive charges along the line joining the twoul2 3y,k:+4 */euk8he6djbnxcfvg py charges?

  Electric field lines near psitive point charges;v.t8*khhs4oxc : lw 0v0nirh

  The electric field s*15xlh 5nsdi. (/ psy 8pvtpwbhown

  Can electric field lines intersect if; yo dx:*er7b tur,q-n free space?

  A solid block of metal in electrso ymm4f-usj 7 ryrq 8k1q684postatic equilibrium is placed in a uniform electymoq j 8r 8r16ymf4qss74pku-ric field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hxl*k9jy b 6ih.ollow metal sphere of equal diameters are each given bl h69i .xky*jthe same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wood6*f b)mdb1ikp en table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top su fi6k* 1bdbp)mrface?

  If a conductor is in electrostatic equilibrium near an elo gr*o jh5ohu3ad;t+.ectric charge

  A positive point charge is enclosed in a hollow metq s)(+gau rbo2allic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point direcaqos+g 2)br u(tly above the hollow sphere has

State three properties of conductors in sd.oz5zj jpq+.,7 poi7t sh.+j(sg x hbtatic equilibrium.

State Gauss's law.

  The charge carried by one electroniw( wpc3;5*lxba7wtqkhvi )- is $e=-1.6\times {10}^{-19}C$. The number of electrons necessary to produce a charge of $-1.0C$ is

  A piece of plastic has a net charge of +2.00 mC. How many mo .xvg oi*lr7tp(5h7cjre protons than electrons does this pie(hglxctojpri * 7v 5.7ce of plastic have?

  What is the charge oqy3,e 8*j2df:fvmj ep,u zg/9 5qcf acn 1 kg of protons?

  An atomic nucleus has a charge f+wbal8 -ct,qof $+40e$. An electron is ${10}^{-9}m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 w2jr1 z+e+h8trhfx(s jue8q, cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of thejt(8s f8+x ,rjwu zqh21erh+e electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the fot+ peb0y 4mm0i8 qm,force between them is 1.0 N. What is the mapyo ,e04fb8t+mqm 0m ignitude of the second charge?

  Two 1.0-C charges ha9 rh r +kzgd(sjx82vm/ve a force between them of 1.0 N. How far apart are they?

  The force between a . fccpck(y( 7k$30mC$ charge and a $-90mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N fiq1pt rr2.asu 0,zqz )orce. If they are moved )u qir1 a0z,2szqp.rtto a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC arlv ck yo9c *4u6oyi*j7e placed on 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 7cv9i6* y4 o*u olcyjkof 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 egw ho8wu 998pplaced 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 t8g hwp9e 8wuo9he electrostatic force which acts on the charge at the origin?

  Three point charges are located at the fu(fl ioc9g7 9/sn8 vh:d(hbduo0g s4u ollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of the force on the g:(0di7b99 usd l4fvh(uo uo/h8ns gc3.00-mC charge?

  A point charge of +Q is plx--vux tbtsmi6+fk(c3 i( m1qaced at the 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 positivfm1 3qx xctms-t(u+v i6k-b(i e 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 atf0vxuivjj95 7 (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What f57j0vviu 9jx is the magnitude of 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, 0.10 m); Q3 = 5.0 nC is atily.9jba-o6 d+m3hrs2-z l lm (0, 0). What is the direction of the net force on the 5.0o - .arbih+ydll- mj ls9z326m nC charge?

  Three identical charges of 3.0 mC are placed at the verti -f)fi) id)z6mheikw6d91 voyces of an equilateral triangle which measures 30 cm on a side. What is the magnitude o6ofyv zideihwf )6i1d) )m9-kf the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3k6f l-i y +:wsav,hb) u0 /(lifkp5eym.0 m. At what point, on a line between the two charges, would it be possible to place a charge of albiky, v/i- (+5ly0fmk fe: )pwhs6u-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 a )rhetp5y*3xi z3zih 1t x = 4.0 m. Where on the x-axis can a*ph i33 i1t5yrez)xh z third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where4r ucbnvr;:8 sh yc:k9 can a third positive charge +q be placed so that the fork :r4nbvccr8:;9yh u sce on it is zero?

  A copper penny has a mas nsoev: e9/q+zi qg)2xs of 3.0 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 th6ae7k/l6j ar nx*) icle force of gravity by the attraction of a fixed proton some distance above it. How far above the e*rn l/)ji6 ckxe76ala lectron is the proton?

  Two 0.20-g metal spheres are hung from a c,kaj vh(5 mq.4 oci8sbommon point by nonconducting threads which are 30 cm long. Both ar mqj4o i5hca(v.8b ks,e 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 bg (1 :(ueus1p/pfo ibis the magnitude of the electric field at a distance of 1.0 m fepb :fupu(i o 1(g/1bsrom the nucleus?

  What are the magnitude and direction of the o: syut. /;m,;b)j tr-t3ivu/d ps 6qnjdf0vj electric field at a distance of 1.50outbdj6jf ,;) 3-;mqitrpjvu/:.0 dn ts s/vy m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thetd4uv4 07xm tthn(y 5h electric field atn x t045(tyt74v hmduh the location of the test charge?

  A 5.0-C charge is 10 m yb55 x8nb(6qq+xe q pufrom a small test charge. What is the direction of the ebx n5bup6 5 8q(+xqyeqlectric field?

  A 5.0-C charge is 10 m from a smac uo+1pmenvy85-y 0 k 5hkzkk9ll test charge. What is the magnitude of the force experiency8 9zpcke1u0+vokkh5-y 5m kned by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distaolsyr*cmq6/l:.5 cu jnce of 4.0 m. What is the electric field at a point midway between the to6r5 . qm:jlysc* c/ulwo charges?

  A 5.0-mC charge is placed at the 0 cm mark o29ed wc ;qmd *:5khocxo3s6mef a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the xsmc kowdde*6o52 3qc;9eh :melectric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC6-etxp (dk e01sp9gca charge is placed at1t(6 akepde9-pcx0sg the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.-*ow zbml/*bye orc(10 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 between-zweb*b ym lc 1/(oro* them?

  Three 3.0 mC charges are at the three corners of a square of i4lk u64t.s qzside 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the4q uzk4 sti6.l electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed au1trvte)os 1) t 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 electric fielreovst) u 11t)d at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniformy6mtlx/ylyd-/ 6itop6 ly :* a3xr.sh electric field. What is the magnitude of this elec66 3 rd/i/x lyl-sp:a6lyhm.*xoytty tric field?

  A particle with a char igj,eln0w3 gdow. 9ke.iy+9u ge 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/w,qxvei*lrv95t1 /tvcqh k) sig*1l/i(n t6jC pointing downward. What charge must be placed 6tc ti1i 9ke,/vqvsrh (gj1tx5w li n)*v/q*l on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. - 8hh uh vg),dns /4p5mwbm-mv The ball is placed inside a uniformnu-4h ,mhmm sdwv8v -g)5 b/ph 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 charg6dzg rua. ;v0ne of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sug6z0dvuan;. rrface?

  A metal sphere of radius 2.0 cm carries a chargmx w*k49y . ,dirfy0mx).plwze of 3.0 mC. What is the electric fikw.lxwzpmmiy )rd 0 f.xy 4,9*eld 6.0 cm from the center of the sphere?