State the law of conservation of electrf kfaab*s8bu;y . mj9(ic charge.

  Is it possible for two negative charges to ar+2 ihdo(a u,vt99 2uj1cls cz) u(szhttract each other?

  Is it possible for a positive and a nega:n 38p:,kcz eiz,uh9p n(f kvqtive charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the z):+ bcnoh4y j t.jn;1nqk 1iaprocess the glass rod acquires a posi1j tynq j )ac;n:1.bhin z4o+ktive charge and the silk

  A proton carries a

  The model of the atom shows p6er8kd mu1w6a

  A neutral atom always ha2js57v91 oqhnifg y,.v)oz pf s

  An atom has more electrons than protons. The .gx5v;y h ynn)sa0h4yvu:ghd or+j90atom is

  Materials in which the electrons are bouh.,v 4bv,omryl k)b4t el,x)und very tightly to the nuclei are referred to,,mu e)ryhk4lb4 v. v )blxt,o as

  Materials in which the electrons are bound very loosely to the nuclei an 3(jv ,o ubrru,ph4g.td can move p,(ouvhg.,jb4 r3rut about freely within the material are referred to as

  A negatively charged ro-v8csmsjh s 2,0lcbz1mclvc17e x h(;d is brought near one end of an uncharged metal bar. The end o- h eclcm,b zccxv71ls1hj2;(s m0s8 vf the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and5jdw ec k.:ydu7/wf/p 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. Which statement isek u.cpywd 5:w7j/f /d correct?

  How can a negatively charged rod charge a7i 8;5vux/vp/7wj6 /5ihdvna yfalq wn electroscope positively?

  An originally neutral electroscope is briefly touched s(smbaq*p6 5jl 0l7 zfwith a positively charged glass rom6ja sf0b( pqlsz*75 ld. The electroscope

  An originally neutral electroscope is grounded briefly ytv r4+o8wlw.1qa01su5 blde while a positively charged glass rod is held near it. After the glass rod i 4tl lo11s+euwdrvwb85yq a.0s removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Theimg7jf fpb r8d(d,k4tf)(;z in a negp kd)tb8gf f; m r(4(fdii,7jzative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed 6(nmt ocs3tz e4th1(v on an insulated table. A neutral metallic ball rolls straight toward the object, 6 (3mttzt n c4(1voehsbut 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 each ball?

  Charge is

  What are the units of the Coulomb constc.d ly 8.uxemo3:bq00 lzbz7 mant $k$, which appears in Coulomb's law?

  Two charged objects are sepa (g )pt,xw-oc g.zpdz/rated by a distance d. The first charge is larger in magnituzogpx-) .pcgz (,dwt/ de than the second charge.

  Sphere A carries a net chargeifve 7.o(t hy2 and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electy th2 of(ve.i7rostatic force between them?

  Two charged objects attract each other witvn ov83x otl39cdriw( -*k2aoh a certain force. If the charges on both objects are doubled with no change in separation, the force betwe il (-8 n3vvd rxo*oa3kwoc92ten them

  Two charges are separmzbj91ftp u;nu4+k9lated by a distance d and exert mutual attractive forces of F on each other. If the charges are separa 91lp ;z9ut4fj uk+mbnted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eache7eix.c xn h:1 other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separat xe:1n.7hiexcion 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 happens to xplpnk 8fq+(6 the magnitude of the force on t(l8q fpknx+6p he proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hap,m) i1rkrqy+ spens to the magnitude of the force on the first electron if a second electron is placed next to the protor r1m ),yksi+qn?

  An electron and a proton are spfa 8) li (ykyr704 lilzzjm30eparated 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 m closezr3)0mfl 4kpil7z8ya jy( 0ilr to the proton?

  A point charge of +Q is placed at the center of a square. When a second e a-hrikhgur( .k5b )6n;c8 owpoint charge of -Q is placed at one of the square's corneb)6r-o .; 8ak5hukehgw(r ni crs, 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 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 cq3n pmk *17hpof 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 mph *k137pncq the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is no hcwjp9*jr6l)a m z/c;t a vector?

  At twice the distance from a point charge,oak(e+j, gd+e the strength of the electric field

  Is it possible to have a zero electric field value between a nep6 flgq*ph8d ae;s+i,gative and positive charge along the line joining the t,8+ p*;pg qi lfad6heswo charges?

  Is it possible to have a zero electric/ -9v)tul jzhhjcn3v 0 field value between two positive charges along the line joining the two cjj9v0uht -c)zl3vn h/harges?

  Electric field lines near psitive point charged8 7/nauetx9kt pbv-z/pf *f.s

  The electric field showns ;6bab wvo4f1u4fvs8

  Can electric field lines intersect in free space(uiz sw8+2 sgx?

  A solid block of metal in jcpyd701utjx2h 7d l8b6i6 je electrostatic equilibrium is placed in a uniform electric febl7c66j20u h tp1j d87ijdxy ield. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal omump4 39qp c p6hssj.j*)cra(2 eg9c diameters are each given the same charge, the electric field (E) midway between the9* ajc6u s(co) ehpg32m.pm cpq4js9r center and the surface is

  A cubic block of aluminum rests on a wooden tablo5 80jmno4 lhpe in a region where a uniform electric field is directed lo45on p jhm80straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equiljaqnij/t z* ,84kus;vibrium near an electric charge

  A positive point charge is enclosed in *uy1 pot ype79z5ua4w 6mrry7a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electrprtyzy 71 euou5p 64mwr9*a 7yic field at a point directly above the hollow sphere has

State three properties of conduxd5 aapz x4*2wa 2y+ha/ vqt,zctors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is k08: n 3levw0to w2rxw2uhm- u$e = -1.6 \times 10^{-19} \; C$. 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. ))ttp6 wk5.pq3woxnkHow many more protons than electronsnwk)t.) 5ko 3qppxwt 6 does this piece of plastic have?

  What is the charge on 1 kg of proton rs0:+jh1 k/bvd0rywns?

  An atomic nucleus has a chg7ey)g 2o 6es2iwz xf1arge 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 c 7+ i qnwmi+)avhb)pcbi:8(slharge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bet)qh: m is8)lvbc (+7 +winaibpween them?

  A 1.0-C charge is 15 m from a second charu8/jx0ih cm b,h*v/*gtf mi;*a 3ouu fge, and the force between them is 1.0 N. Whai *tvu;hou*i80u/mc* m/3 bjfx,a fhgt is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are 6y 9nn ydwt; qki/irn:a 6r(0kthey?

  The force between a buqe xto/1a)0$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm abbf7 7*v9knlv)ld6 j npart, experience a 1.0-N force. If they are moved to a new sep lbn 9l d7)6v7nvfkbj*aration of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cha .1qiqth9f7 j o*lf9oprge is at the origin, the second to the right at xop 9ffijq qo97l h1*t. = 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 placed on thec)r,v wnt5bk , x-axis. A charge of +2.0 mC is placed at the origin, -2.0vb5 r,kwtc ),n 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: Q 3ahhpytkc 0p0+ a1:)v ao2ctc1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1t1ha :yck c+ph3ap o 0at)2v0c.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at tn+2vxni a g0kjaf8*+phe 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 chargjap+8k f02 an*+ngxvi e 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,l ,i0u45c od xova*zc1 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the oo0vcx1 z 4dicla*5, u5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);xmu7;bn)j is p,gol 24 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,j;47s2 uigon), lmpxb 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical chargest3k xd 3(2 xxomeqhisq*ab/w7e,+hm+ of 3.0 mC are placed at the vertices of an equilateral tria,7/teaxdhkixew mo+hbxq2*m+( q 3 s3ngle which measures 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, wrfb t9:s;8(xowdt0 c ehich 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 sucht dr0esco:fw ;9( 8tbx 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 idc x2 ee:d 6kgws18s6)wyl2ev s at x = 4.0 m. Where on the x-axis can a thw66ge 2xlsc:s 2 )vwd1ed8kyeird charge be placed so the net force on it is zero?

  Charge +2q is placed a+.mdy;r djr/ wx1u,pdzn /- qct the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the f um/pw.rr-; +djz q,xyn ddc/1orce on it is zero?

  A copper penny has a mass of 3.0 g. rt2pq1zgf6c8yr mf *-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 againszsnm4+r s)i +kt the force of gravity by the attraction of a fixed s r4zikm)n++sproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung fro02z 2tsez7iu dm a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repe72tsd uzi20 zulsion 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 magnitude 0trlfu 4w,d as1zk;1cof the electric field at a distance of 1.0 m from ttk z1c,drfs u4 aw;l01he nucleus?

  What are the magnitude and direction of the electric field at a dist mfns8i6lk 8t wkpwb3ki) +jpa)6q;w8ir h0(b ance of 1.50 m from a 50.0-nC charg)a6w qn0jki8 w p(bbism f+r wpk)6 lt38k;8ihe?

  A 5.0-C charge is 10 m from a small test char)mqtjmfe,6mq1u h. /oge. What is the magnitude of the electric field at the location of the test ctfqmo, m /6j.m1u)hqeharge?

  A 5.0-C charge is 10 m from a small test charge. What is :*sqgyv fictq7u99u( the direction of the electriyg9ctq7 v*( qsuf :9uic field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude zu : v tgkzp47z+e/bk0of the force experienced by a 1.0 nC chargeu 7ekg bzz v0tk4p:+z/ placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a d//-ylw 2l ibdd-e4zny istance of 4.0 m. What is the electric field at a point midway between the two idelw 2/4nbd/y z-ly-charges?

  A 5.0-mC charge is placed at the 0 ctui+2hm9,qwf )-k0itt -s ans m mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mark?hnmw+2tius f,qtst )a9k-0-i

  A 5.0-mC charge is plaudo5 3pxu; 4vvced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thexvpv o du3u;45 50 cm 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 8od(t1yjmy /myd.;xmmC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the pm yydmj/;tx1.mo(d8y oint midway between them?

  Three 3.0 mC charges are at the three corners o gl+tw,m- uc g,+0sty+s*e mlcf a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleg*cs,w,+ gtts +m y llmeu+-0cctric field at the center of the square.

  Consider a square which is 1.0 m on a siv q6vor5h4. asde. Charges are placed at the corners of the square as follows: +4.0 mC6.4hroq sv5a v 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed it/rhn gfz5/ir k (t04rn a uniform electric field. What is the ( it n0frrh/z45gtk r/magnitude of this electric field?

  A particle with a charge of 4.0 mC :/wo;5 pkcl( u;x bqilhas 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/i4 (p fzmp.stcvl5.+dC pointinzpsmf p +l.ti.5(4cdvg downward. What charge 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 balj9 gzp) (gx)oo9bj6y fl is placed inside a unifobj ) p)z gx9o(yfjgo69rm 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/ qat6 hb9-23kt y oaz/gn6 zsx;ixi1s charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphereigazks xztt s ab61 i96-/h3q/nx ;2yo's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mCcn kw s 0fex6e:j5d3v). What is the electric field 6.0 cm kfce6 w):305 sevjnxdfrom the center of the sphere?