State the law of conse,v 9-qb uuu)i6)hyaxr rvation of electric charge.

  Is it possible for two negative o g5; y436qvwqy(hzjccharges to attract each other?

  Is it possible for a positive and a negative charge lm)6jx0hz0p 1auon r8 to attract each other?

  A glass rod is rubbed with a p 4 wllu p coato+;u4sx+ja m6;l(k8pk(iece of silk. During the process the glass rod acquires a positive charge anutl aa4m6(xuo4wlks;+p8+l;(kc o jpd the silk

  A proton carries a

  The model of the atom show /00dd0mu4h lsugs zt;smu 7xmr3w* *ds a

  A neutral atom alwayj -rikid)ye*a 5 y.b/z:ug0xr p l8.mw+ii8ujs has

  An atom has more electronzzdaz*l0 0hs p8ka (a0mcq9i4p0 sm9rs than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arpp d/r2( l )lzx9wv3bre referred todzr lppv wlr/xb9) 23( as

  Materials in which the electro:im.l *no kbykr4or*/ns are bound very loosely to the nuclei and can move about freely*:/*irrnl . ko4obkmy within the material are referred to as

  A negatively charged rod is brought near)krib u-1xre j/1o 6sl one end of an uncharged metal bar. The end of teu x-ror1 1bk/l) ij6she metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charg d)p)y;vsq438tru l noe, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. )t8)uqpr4; oyl 3sndvWhich statement is correct?

  How can a negatively charged rod charge an electroscope posirwb. f)ez3a/(t/j -ff ss mqa-(nm9srtively?

  An originally neutral electroscope is briefly touched with j ck.z1fnr:qh24(wlk a positively charged glass rod. The electros(c:l1. kwkqrnfz 42jhcope

  An originally neutral electroscope is grounded briefly while a positively cha4f ;- ahidqah 9-: iekrhvt*2htw7. jxyeg5 v,rged glass rod is held near it. After the glass rod is removed, the ele2eq;v :ikyg4 v.,ha fj t57 a9txhd-w -he*rhictroscope

  A positive object touches a nevtt c 5,ua+p8t rt +h9k6.gh;ljb-gnjutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thev h9n,k hjt tbagt-g;pc u58+r6tj+. l leaves?

  A large negatively charged object is placed on an insulated table. A neutr4jqbwqa1tlh 9ii (d99al 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 bal1ih9j t(9dl qaqb4i9w l touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coul47fbhgtj 8id;3abg ( ):ch umoomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charg rc sn75ymwz7r0 ec/s7e is larger in magnitude than the second charge. y werrcn77c mz5s/70s

  Sphere A carries a nzr/9xa e 4m(yqet charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement besa94e( ry/ qzxmt describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges onk9eptx1dbe a9 f- oob:,o-8 dz both objects are doubled with no change in separation, the force between e dtfoa8 x o9,e:-zd-19bopkb them

  Two charges are separated by a distance d and exert mutuev9x(h k(.q7 ivrgpr;al attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the ekq9 i(( .7r;pxrgh vvnew mutual forces?

  Two charged objects attract each other with a force F. What happens k1opg1w56rwofh tg r x161gew2 t 8rj/to the force between them if one charge is doubled, thp r516 rw wt1h kf6r2/gxoo1jgt w1g8ee 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 separated by a distance of 1.0 m. What haj dsfw0t.. n7kdux o.1ppens to ndx.t 1.7wfs ku0dj.othe magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separate2 n o.n7p;pl5y4por/(pyo e 0ki,ced td by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron ,pi4o(o2 dn0eo5/yeyt.p ;7 lk rpcpnis placed next to the proton?

  An electron and a proton are separated by a distance no ,l(7bta .yeof 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the proob(.l,n t 7aeyton?

  A point charge of +Q is placed at the center of a square. When a second p jadhqx.d d0,l3j /jco4rv 2go3nx(.i/tg/ud oint 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 th4hj.dvuogo dji.30/dxr 3 adcqj l n/2/,gtx (e 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 plt )avt+m2)mc9qa zpy/aced 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 charge of +Q placed at on+)ym paq9t/)caz 2m tve of the other vertices?

  Which of the following is noa8-r7p1mcz .mlh)k5 u(*bfnhc lp*e pt a vector?

  At twice the distance from a point charge, the strength of the electricdh-65fux gy *p5dr ewmj0xy+ ,h-w8p i field

  Is it possible to have a zero electric field value bet vp4mvp t0gagf0+3,uo ween a negative and positive chapov0f4t m, +aup0 gvg3rge along the line joining the two charges?

  Is it possible to have a zero electric field js )2fsdp8*lrvalue between two positive charges along the line joining the tpfrls82 d*j )swo charges?

  Electric field lines near psitive point chartt + lhrie3 y/-t2hw-vrmw)o6ges

  The electric field shown 9i je3nng0j*:(qob * wk)mljww/ abr-

  Can electric field lines intersect in free s8suyv n- -e;bipace?

  A solid block of metal in electrostatic equilibrium is placed in a u6/bo*)du jf81hr hgx bniform electric field. Give a statement concerning the electric fiel6gd*u81 f hx/)jbhorbd in the block's interior.

  If a solid metal spherb *+ca2 .q61z nkjuctw/ajh6te and a hollow metal sphere of equal diameters are each given the same charge, the electric fithku wqnt6/6z.bc2+*aj ca1 jeld (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform dfgnr.8sc.aga- ) n1 qelectric field is directed straight upward. What can be said concerningr ..dsc- f1q8g)nga na the charge on the block's top surface?

  If a conductor is in electroslg xv8me-72 +vn szis3tatic equilibrium near an electric charge

  A positive point charge is enclosed in a holv zb 3)fzrt1-d7wkoq9low metallic sphere that is grounded 79q r3wz1)bd- vzktof. 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 c scfp kf.k*97kw q6b2lonductors in static equilibrium.

State Gauss's law.

  The charge carried by o6/l rbq;kabkrkc vzvetjc9f-q do.;e a401:;ne electron 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 protons7y btf18r r)kk than electrons does this piece of plastic hrf yrk t8b1k7)ave?

  What is the charge on 1 kg of protons2jmf8e3bm 9 vz?

  An atomic nucleus has a charge jbwx s 5s5,x0/qb7 cb0s0uwpq 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 charge values of 2.0 azm-ma: wr-3nand -4.0 mC, respectively. What is the magna rmzm-w:an -3itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between tq35mil1na0u vrx s7k;q 5m 1hpj4 hzmp2gif -7hem is 1.0 N. What is the magnitude ofj-17 ugmlsvq fka5;7ihn5 z i2h10rxp3 pqmm4 the second charge?

  Two 1.0-C charges have a force between thex8hangvquhk/b5g 7wv3 -wqs-f f a++5 m of 1.0 N. How far apart are they?

  The force between a ss1et e j, n.oz7ps,)y$30 \; mC$ 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 force. If e y6t(93tnz6cf6jwy58 pgh n+sngn7 nthey are moved to a new separation of 8.0 cm, what is the elect65 pwnc6 ynfn+snj6e z 73y8n9hg(gttric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fkn 5;e0drov- hirst charge is at the origin, the second to the right at x = 50 cm, and the -v05dh; rke onthird 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 placed at a;3dk (ueej j:r,wk2ythe 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 electror2,e(ka:j e;3u wydjkstatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: d jrkj 3ybz-6m2c1lyw 9 /hwf3Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.003kwrw 2h 1bc9j3dj/y6mylzf- 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 s n*n8t5a+ig je/cdo6gqs, h m3quare, 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 positive charge at the center. What is the magnitude of the force that acts on the cent56/ scoj, *dgmt i8g neaqhn+3er 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 nCqj w lbt4:20hvt(/g hy is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the hyhl q/2 t0j 4wbv:(tg5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 fsv. aai,dsv*s) y1/vnC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction a*d,f)a ys .si/vv1 svof the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mbam2p;a -y:h/-p s mekC 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 on any o-pks :ya m;m/-eab2hpne of the charges?

  Consider point charges of +Q anf+w6:i iv,foid +4Q, which are separated 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 wvfw i6: f,iio+ould be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x h4)xqz+ru k5 ue /d*nc= 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero?de+k)54qcx z nuru/h*

  Charge +2q is placed at the origindf) *gvc r(5ye and charge -q is placed at x = 2a. Where can a third positive credfgy)* (5cv harge +q be placed so that the force on it is zero?

  A copper penny has a maszowjo3p4 3v8pk j2i i;;a8vu rs 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 the force of gravity by the attraction of a fixtm ;z 1r:*k20clzjlk eed proton some distance above it. How far above the electron is the proton?lk* czltj1 0 ek:m;r2z

  Two 0.20-g metal sphamm* ibk) 1+baeres are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until theabb*k)1m am +i 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 magnitude of the elect 1jatyo5u6txt/ mz7,oric field at a distance of 1.0 m from the n oo7 1tm, utz/6tjya5xucleus?

  What are the magnitude and direction t k24,tvc/wg akb-aow4mm7d m3 4vii- of the electric field at a distance of 1.50 m from 4mkiivvmdk,3abw7 c 4/o-tm -g2w4taa 50.0-nC charge?

  A 5.0-C charge is 10 m from a small)a4 ;do+h 7vl,kyvgak5 xgq0 v test charge. What is the magnitude of the electric lyoav75+d , 0axgvv;kk 4)hgqfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test chargeuoc3ktrq. f51j7,:wwo von-y . What is the direction of the el owoo:q1fyu. rt5- vnkc j,73wectric field?

  A 5.0-C charge is 10 m from a small test/tx4 ju *zcjle az , 2+tsq.zjb*t6,sk charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test t,exlbj sz4u+q/j 6azz**js.c k2, tt charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofs.rm/ xl.0 9h+uv:iw -o ja6g8dhnndc 4.0 m. What is the electrid sc6/w .rmu0d j9-oxnanlh+gi:.h 8vc field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark g6uqy6 bbzb5 dlativef6/; c uq9s(12 of a meter stick and a -4.0 mC charge is placed at the 50 cm markb i15gvd eflz/ q 6s96ya2;btuub(c6q. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a mejb+ txsw3x ),gter stick and a -4.0 mC charge is placed at the 50 cm xtgx,)s w+jb3 mark. At what point 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 7.-z cds6euz*;gon gvand x = 0.20 m. What is the magnitude of thezge;n-g7v* uocs6zd. electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornesd)g ;mr kchc9ez y;(,rs of a square of side 0.50 m. The last corner is occupied by a -3.0 mCdc; (h m;)k9,cyrgsez charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ad ul);r0etx/k t the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mCle0r ku/ tx;d) 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 it is placed in a u )hfzed .zb,+ 4n,gxuolp9m3mniform electric field. What is the magnitude of this electric fiez 9ux,p om+fb .3dm,)h4ezg nlld?

  A particle with a chargkqw z*hyru4*3e 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 0.1202,/j.vd 6*r1n6 yb:tyt w;wbegbmeis g is placed in an electric field of 6000 N/C pointing downward. What ch j,/g6yeb s6wyt2nteb mv .;wr*1:dbiarge 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. The ball is placeq2( xpokcn e34d inso(n3 24ekp qxcide 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 char lb*0-wzkb1m mge of +2.0 mC. What is the magnitude of the el-m0mlb1 bkzw *ectric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is .f: *w4hnhlp*iqhyt 4eh41yx the electric field 6.0 cm from thn:yixht4wh.qh1 yfe *lh4*4p e center of the sphere?