State the law of conservatio e9aar* h.xz/fn of electric charge.

  Is it possible for two negative charges to attract each otherw1d.1umr qia4w8u t dl2x1hm+?

  Is it possible for a positive and a negative charge f0nc(.s eo b .y *1i2k dwavb(n(6hnusto attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla f4(s0w/mw3q/ gsi inxss rod acquires a mn3wf / 4iw/(sq0 gxispositive charge and the silk

  A proton carries a

  The model of the ato id63d 153 9na4ufpsq dtodqqy73c0hl m shows a

  A neutral atom always hz8bb*t/nw/zouc3+clfp7 - ysas

  An atom has more electrons than proto/5 cvn/hivp p+ns. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are referb3, 8 uzvdf (l3cd*ujpred to a dz8*vlub3pdfju ,c 3(s

  Materials in which the electrons are bound very loosely to the nuclei and casjri30m :2e/rgt26tsw 9rt qjn move about freely within the material are i:6 jsrq 9sgtt0e2 2jwrt/ m3rreferred to as

  A negatively charged rod is brought nez /y in(bck0s)ar one end of an uncharged metal bar. The end of t i/)(sznbcyk 0he metal bar farthest from the charged rod will be charged

  Sphere A carries a net positihl,mp5x6*4ul ,ca i( jtpjz 6jve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly pcm,5 ijtxj,l l6 ap* h6(juz4touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod chargevn2i :zdx9ps+ an electroscope positively?

  An originally neutral electroscope is g 34 43jcdw j 8hr,6+ v:qdmtcvrtdit,briefly touched with a positively charged glass rod. The electr4jct t3vw4 d+dm g63crj: q8ihvdrt,, oscope

  An originally neutral electroscope is groundji 1l :z:cv*wked briefly while a positively charged glass rod i iz:1kjc *:wlvs held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral el ovyt*rde;cz52k f) x6l.urv jy758p rectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happensz285ey7)t rvr;jplr*uo6k xydf v. c5 to the leaves?

  A large negatively charged object is placed on a: ;gr-8 ))amsn8ctgoro d q(yjn 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 bydmno(gtjr)) aryqs -8o g;:c8 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 each ball?

  Charge is

  What are the units of the Coulomb constave*p 2 (gyn *k-bpwrkolg:-/tnt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is labmf5 1d -sdt rs*5ry,drger inst-d5*r,bd1f5r m s yd magnitude than the second charge.

  Sphere A carries a net charge and *yai*hif,d h7 sphere B is neutral. They are placed near each other on an insulated tab*hy7i f*ihad ,le. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain fe7 /t*.izav)umo f d9vorce. If the charges on both objects are doubled with no change in sz vie*7.dfomat9u v/)eparation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of tyg* nb.i/w3g F on each other. If the charges are separated by a distanwb/.t 3 *gynigce of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. Wha-6ws mej k5bw5t happens to the force betwwje55sw 6 bk-meen them if one charge is doubled, 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 separated byrj*st4w gf0 m-f)vk /c a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the v t)0kjc/s* rfm-w4gffirst electron?

  An electron and a proton are separated by a distance of 1.0 m( e8cprhl/)edo j-/oj. What happens to the magnitude of the force on the first electron if a secondcjo/rjl o(eedh8)p/- electron is placed next to the proton?

  An electron and a prot2/mwhhb-n+ a - f5jes+7 ytxb3vt*lf won are separated 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 mhv+lwsn+tbejb -7 t-5mw* y2 f/xafh 3 closer to the proton?

  A point charge of +Q is placed at the center of a k pqtx. 1czjbhj, :x(bd4ro)2square. 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 oqjb.khz(c4) 2 jdp :, ortxx1bn 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 an equilateral triangle. Whenkie fw0 6*kav-u2g4 uclqq0n) 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 i20f 0v kcuaeg -q*q 6ukliw)n4s 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 followi94)2tjn mu:jpor ;rkesw; f/s ng is not a vector?

  At twice the distance from a point chargju 1 ja)8z)b,(+0; 8vc pil wryfqtlzwe, the strength of the electric field

  Is it possible to have a zero electric field value between a negative and p57;xp/x/eruhi1 gzi t t9iuz z5a9r+11 u fqejositive charge along the line jo ; ht gue1z19j5ze5 ix/txa izf/9pi r+1ruqu7ining the two charges?

  Is it possible to have a zero electric:g7b:k-lsci8rue o i 0ed6a6htvd/8w field value between two positive charges along the 70:otee d6ikc6wa hdbr- 8 slu:/gv8iline joining the two charges?

  Electric field lines near psitive point h2ym*prt1c8y.4gcp xek..ny charges

  The electric field svx8fnpo--c8z p1 v7 ophown

  Can electric field lines intersect in freezi+n dw.l9jd2qpusq.u :deha, -)d/ dmm*w9 f space?

  A solid block of metal in electrostatic equilibrium is placed7 wpuws9+-bk t in a uniform electric field. Give a statementw9kw-+bps u7t concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachr +jm q-dj-:zk given the same charge, the electric f j-kmzrq-j:d+ield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table rbr5+uf/d rb,d o:+ybuk0k) lin a region where a uniform electric field is directed straight upward. What can be saibk0d + uk b+ru5 dborf)/:,lyrd concerning the charge on the block's top surface?

  If a conductor is in eleci/eowi7 b2l8g ,1bh jttrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallicnfpe+o+ ib9 g+ sphere that is grounded. ++ poig+ nefb9As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorq1htk azb/1 6ek)nd;g* +jvbzs in static equilibrium.

State Gauss's law.

  The charge carried by one elev5xue3lolxz)4fe :7s n7 gmc/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 protons thae 4(s b;6srtdzn electrons does this piece 6brs ; t(eszd4of plastic have?

  What is the charge on4yu 2g goihr8qsc0h4: 1 kg of protons?

  An atomic nucleus has a charge odhzo/xss h2oi u7 51sl3mx5i,f $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5vj3 7pyyk6nc*cedmy i3dh,- ) cm, have charge values of 2.0 and -4.0 mC, resevk y3ih 6 )*37j ,pnycyc-dmdpectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force 1e:zl(lp hp8rhg2hy+between them is 1.0 N. What is the magnitude of the sec ph r1z2+ghphlyl:8( eond charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa)+)e, lmv8ob oiqaa8trt are they?

  The force between a j3az xe ,maunlyn-n*mr2n//; $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 c n9fvn,t d,0usm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between themud tsf, 9n0,nv?

  Three identical point charges of 2.0 mC are placed on the dr,ycx nqy/,:0 qd e;px-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 dnx,q e/yy:pcd,r 0;qcm 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 clrom3 2dsc9p 7harge of +2.0 mC is placed at the ori32 l d9rmps7ocgin, -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 at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC cw *oy./kyn/xs 7gd48iwtrr7at 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/ dyx*s4i8w7 wryc7nk.grt/o on the 3.00-mC charge?

  A point charge of +Q is plx;far7 0d w/p/uc0wlzaced 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 positive charge at the center. What is the magnitude of the force that acts on the center charge if a third charge of -wdzxpa7l 00 fw;/ cu/rQ 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. lz7895t8)/dcffd7frxwxx myi d5 e(l0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC c5yxe87xl 9if rd/lt wzf( d)8m7fx5cd harge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)p 7fgia e10,fiy u9:ne; Q3 = 5.0 nC is at (0, 0). What ise9fui,p:7f 0n ag1iye the direction of the net force on the 5.0 nC charge?

  Three identical charges ofy/ h,o6fazh6g 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 hh ,/fyz 6oa6gon any one of the charges?

  Consider point charges of +Q and +4Q, which axh5u- seyw pz3;,iu b5re 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 electrostb5zi, euuhwx; 3s5 yp-atic 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. W4/qa qnz;xa-o n8dmy9 here on the x-axis can a third ch8 4 nzaynqo/;-dm9xqaarge be placed so the net force on it is zero?

  Charge +2q is placed at the origin andvr+k d :ik 9b9m-g d5a7hpzk+h charge -q is placed at x = 2a. Where can a third positi+b9zkrmkp:+ ad7kvhd9i-g h 5 ve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A togtdl ,2l 8se:aew1z*m, y 8plftal 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 :16gsdi:2jkqe( c eznn62cwz force of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?2 z1(6s:2e g:6 idnw qczjenck

  Two 0.20-g metal spherevmb(u0on4q0(fqvq7,bc br ) *ozy ck 3s 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 the angle between the threavqc*mrb7) (yqkb(vcnb 0 q0 uoo4,3fzds is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whatxd:u:v)j( olaa )4ne2a/n au s is the magnitude of the electric field at a distance of 1.0 m from the nucl)jv sa :al:a )2n/xu dnuao(e4eus?

  What are the magnitude and direction of the electric field at a distance ofs/b gi4l.( nq:.zefd f+xxun 7 1.50 m from a 50.0-nC :+ efxnguxzl(q /.bif4.7dn scharge?

  A 5.0-C charge is 10 m from a small test charge. Wh5gi/v 8jf 44l koay7vz2 av,-cwrlaqfp87r 3 dat is the magnitude of the electric field88 z of4rrf-la47cak, q7i2vv 3lya gwdvpj5/ at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. W (h3esr/ 9 v i e-6)nbc1 s*afcdwz3bne2oyh(dhat is the direction of the electric o3dni-azh)2b(6rs/eb e13cf*9 cdnwhe (v sy field?

  A 5.0-C charge is 10 maip;nb2c,5 myf0y x m( from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the l, fm y(an0c2 x;ybpm5iocation of the test charge?

  Two point charges each have a value of 3.0 ovpq5*0(pe ooC and are separated by a distance of 4.0 m. What is the electric fiel qpoo o*(e5vp0d at a point midway between the two charges?

  A 5.0-mC charge is pldiu, 9 4hpc .slyfq7-qaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is l -4,ci9 dp.fu7hsqqythe electric field at the 30 cm mark?

  A 5.0-mC charge is placed at they6(3mx:c8wd n6zutp y 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 is the electric field zzy8 d6mt3 6ny cwxu:(pero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 0 m ,qsv9 vdoe+o7ofx8do+0ez and x = 0.20 m. What is the magnitude of the em+98 ,e+doood vf ovx7s0q0ez lectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.lyz;qvk vs*( wyapz.3bj0k. 150 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at th30(a vjk. k*sp lqyb1zwy.v z;e center of the square.

  Consider a square which b5u5ytdrr0l(is 1.0 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 electric(r50tl 5uyb dr field at the square's center?

  A force of 10 N acts on a charge of 5.0 m yrks- 3*duzii6w rtv299z.c uC when it is placed in a uniform electric field. What is thvkiys9ru3zrz2* 9 icu -t .d6we magnitude of this electric field?

  A particle with a charge pc pgbx 1ps r2i*93))d4rcbpwof 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 ly )wv u*2m m6uki2.fsmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the basw2ivmmu )u yk6lf*.2 ll for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The jyhk6s/1qcxhs p1olj6 42 2 iyball is placed inside1 jsc2yixs py6264 jolhq/h1k 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 carr hq2h-wx k52n(/ylfps(+u osoies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 c-2y/(pf25 xnuss+hwh o(qlkom from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Wha/nv+ts o3 9d l)y:iex(ipvem4t is the electric field 6.0 cm from the centepdl yt)49imvn+( o/3xee :sivr of the sphere?