State the law of conser(l 90j m94p mw(mvnt, bl0pvorvation of electric charge.

  Is it possible for two negative charges wvt h)g90z*xed sh0;a to attract each other?

  Is it possible for a positive ab.l nlmc0z1 /znd a negative charge to attract each other?

  A glass rod is rubbed with a piecet.pblzy ,; 4yp2zl4vr of silk. During the process the glass rod acquires a positiv, 4l.bz;2 ptzpy l4yrve charge and the silk

  A proton carries a

  The model of the atom sxa/*iz 4* *+gmjs wapnhows a

  A neutral atom always hastwz71yig9xk937ix6svitz,si0 f s, he, 3gvd

  An atom has more electroq.b9ehkn7gx , 3hws ygv2zam-zvu8 67ns than protons. The atom is

  Materials in which th nomxj.f vyj5zyud 83mt94*r6 e electrons are bound very tightly to the nuclei are referred8*9ymxt5.mfo v3rny z d4 ju6j to as

  Materials in which the electrons are bouncc 1q *4bibyp0d very loosely to the nuclei and can move about freely withbc* 0bc y1qp4iin the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b.7ark/ g hxbr,ar. The end of the metal bar far/ .gr7x rk,bhathest from the charged rod will be charged

  Sphere A carries a net posita40 uilxb:sjd7+ x :ke 6st;xwive charge, 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. Which statement :d6xwjss0x 7iu a :xk;tble4 +is correct?

  How can a negatively charged ro cr,m zys +2synyv; +50byvxq aa82qb9d charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively chafqy,r;5f+f zg+0lzg kiclo36rged glass rod. Th,f f0 3qlkf5 zc i+gg;lr6yoz+e electroscope

  An originally neutral electroscope is grounded briefly while a positively chargeo+3st6r kmrge+t y02xd glass rod is held near it. After the glass rod is remkx 6+0moy+erg tr 3t2soved, the electroscope

  A positive object touches a neutral electroscope, anx*a /0u: fzfxld the leaves separate. Then a negative object is brought near the electroscope, lx*fa:/zxfu0 but does not touch it. What happens to the leaves?

  A large negatively charged3 nky 0atz)ql 85q*9*iptsfmto;x1i u object is placed on an insulated table. A neutral meta8 aq 0 5ozti t ium*x*)yn3tp1;kf9sqlllic 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 ball touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the C1am 7n,;+ d z9sgpkx;ls;pv0qhy-3dja j,kga oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanunm6p) kz4a;r8k/eeh r2 ilp)ce d. The first charge is larger in magnitude thahezl )p a6u2kmp/kr4) en;r8 in the second charge.

  Sphere A carries a net charge and sphere B is*o ey6oi,puz8td/6pg neutral. They are placed near each other on an insulated table. Which statement best deso, pp to/86gzy6iud* ecribes the electrostatic force between them?

  Two charged objects bp nn 9xur /pz2az..i8attract each other with a certain force. If the charges on both objects are doubled p bpz2n.9/.uarz i8nxwith no change in separation, the force between them

  Two charges are separated byk2ty9ma x50cu a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?aku5 920my xct

  Two charged objects attract eacht-efr q7zb5,pw ae 2k* other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance bee2r ak-b*f w5zpt,e7q tween their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton ax pj23xa02o p fi2b(i t+y0uovre separated by a distance of 1.0 m. What happens to the magnitude of the force on thetiox bi y 22vo0f2 u+(j30ppax 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 mjv du31sh td2). What happens to the magnitude of the force on the f1uj )dt2hds3virst 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 happens tlv3q 674ysrj yo the size of the force on the proton if the electron is moved 0.50lyq7y6s3r v 4j m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a sex xt 3*sq9wd:qshs 9,ocond 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 of the net electrostatic for :o3, qxshtdsw99qx s*ce acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilatg 4xm/g mol2j0eral triangle. When a second charge of +Q is placed at jg2x/mlog 4m0 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 one of the other vertices?

  Which of the following is not a +u/ +on2 xyjw oi8hv0-in5v rhvector?

  At twice the distance from a point charge, the strength of the e2ciu2r)xn3 37hw ueeilectric field

  Is it possible to have a*r (kc:mkzmc1 zero electric field value between a negative and positive charge along the line joinczr k(k :c1mm*ing the two charges?

  Is it possible to have a zero electric field va)r3vya .m (yijlue between two positive charges along the line joinmvj )3y(aiy .ring the two charges?

  Electric field lines near psitive point charges rlm6mj)je3+ok3y r4vdmj5 o4+diqk2

  The electric field shownr h8jsbv2* 5f p3tb7cik/fn, s

  Can electric field lines intersect in fr/lvrxau ty2im6 :(j ,wee space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform el jhoiu3 7fb)eel6fe)h2il -)rectric field. Give a statemlreebffl) huh) 3i6i 2)7o-jeent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete +a6qwo7 zly4grs are each given the same charge, the electric field (E) midway between the cwyq lzag+647o enter and the surface is

  A cubic block of aluminum rests on a wooden table in tw:1x9sp g8 aiy (hkyp mp)g-9a region where a uniform electric field is direc g-hkpy s1wgia9yx p)(tm9p8 :ted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electr)k7fo+/cv4ycx cewe7 ic charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounded6sv/bd)u 2g iw. As compared to the case without the hollow sphere, the electric field at a point didb vwi )s/u62grectly above the hollow sphere has

State three properties of conductors in static equilibr:*7dppxvc26 )uzd/epg em2jh ium.

State Gauss's law.

  The charge carried by one electro ihb;s g0k;f.cn 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 protlr9rj4v1g-p nons than electrons does this piece of plj19l rr-p 4nvgastic have?

  What is the charge on 1 p sp lpasjekn9:;()( akg of protons?

  An atomic nucleus has a char0t4 6-dsx)nj e9g2*ggxy27 nm ofhixm3y0 hkwge 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 uvzxb, iika*l4(bterc4 i5 84 charge values of 2.0 and -4.0 mC, respectively. Whaukzxel*rb5 b4 , 84ic4itavi(t is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second chargeys. re)nyl bsi,+amnmvg0 5 .,, and the force between them is 1.0 N. What is the magnitude of ym+br,ny.s)n,0a5. g vilm se the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart;il.ks0f drv/7ned5ec; 7lpv are they?

  The force between a eno 2klb90qvfq a; 25p0 by9ip/ee)8r *fgaxi $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience tp *lot:f3us8pug,/ h a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between them?pf/p3 oug* l :,ush8tt

  Three identical point charges of 2.0 mC are placed on thegka cv/ uihw l4ck(2*g2cal33 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 of the electrostluhkwi4aa/ckv2g3c* 32gl ( catic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A .tc1 9d:c 4jcni3st5u0lwnohcharge 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 the 100 cm mark. What are the magnitude and direction of the electrostatic force whitn: 9cncu c4t31ol5 idshj.0wch acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x = 1 f4k*q1g/5euhafxg q 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 3.00-mCkfeg1q 1 u5f*/hgqx a4 charge?

  A point charge of +Q is placed ap, av/n8a*9 luj+utiat 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 mag a/ta pv+*,ajluui98nnitude 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(+i f.rjcwm5 zb,o:hh-:zkqv3 ymj r , = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). mrz5wfk:q.bj(ch- y :3,jv zm r h+o,i What 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 p6dhnvrf.4t/i-cjei( )0 glg.0 nC is at (0, 0). What is the direction of thp)in0-lg/4. fjr c (ih6gde tve net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placo, x:ltip.iy2vj9kd (ed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wxkivo pld2j(9: .i, tyhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are v85hwxl/coz.y)i k1sseparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q suci5lszcvkh y8 /1o.xw) h 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 al.ct)jt +jvxm1zi +uy.n*kf+t x = 4.0 m. Where on the x-axis can a third charge be pvtj+l+jf)cixt kmu. y 1*. zn+laced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pla)1/z) urwy sevced at x = 2a. Where can a third positive charge +q bur 1svew /zy))e placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A toauk 0*5lgvd3-g xpzr5 tal 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 endz+n6 o i*y+wtv,vj t 6k8j9the attraction of a fixed proton some distance above it. How far aboyijj6+98wn +tokv vd, tnze *6ve the electron is the proton?

  Two 0.20-g metal spheres areey1ep( o to66tcp- o;f hung from a common point by nonconducting threads which 1ytoopo-p c(;fee66t are 30 cm long. Both are 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 is the magnitude oprp; 4p;j*t-re935k:zh a nr zn*dxxdf the electric field at a distance of 1.0 ;jhrx 5r pzd*pz:npa* ;e4kn9x3 r-tdm from the nucleus?

  What are the magnitude and direction 1hnuq3 tp35k,zw 03u thc ,+k xobr0ofof the electric field at a distance of 1.50 m fro3uhwq +kt oo3r1cb50hxk3t0 pn ,uf,zm a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. Wu;t u m/ygw)g) dmtjf,z 4n(z(hat is the magnitude of the electric field at the locatiout)/u(t,m f4ng ywm)zzgj;(dn of the test charge?

  A 5.0-C charge is 10 m from a qfzyp7 gm etia01v4)og6p2- zsmall test charge. What is the direction of the electric field?q e46o -a p7zvty2izg)f1p 0gm

  A 5.0-C charge is 10 m from a small test charge. Wq- dt:g+abp: vhat is the magnitude of the force experienced by a 1.0 nC charge+a:gpdtvb: q- placed at the location of the test charge?

  Two point charges each have a value o smscq( 8xg-(v035f)zgmq bas f 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two ch5 z s83csav(fqg(smb )0qmg-xarges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 )ijegl1) pxew7qn .1p mC charge is placed at the 50 cm mark. What is the electric field at ). nw1 e qlejgpxpi71)the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a hd. w 6h4g8(:9zq3aroaw zw2b nhsu3q-4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the elezwr64a ( g.shbwa93:2huo wdqq83 nzhctric field zero?

  Two point charges of +3.0 d vw/ bkqu:f89a yx.g m469cbumC 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 /bm9yax64dkq c.gv w:8uf9b ubetween them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. 8ojhn1q)y1pfar f (i fwdw3., The last corner is occupied by a -3.0 mC charge. Find the electric field at theif.,h18 ff oqan(ryj) p1wdw3 center of the square.

  Consider a square which dw0e) 2kf6qxagr)pt 3is 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.wdf3))pt qgke2 60rxa0 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 5y. ot hcg90l ho-,qvyplaced in a uniform electric field. -y,tch5ogvlhq0.y9 oWhat is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hasgu e5pmiz(dl: l dr8v5600jgj 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 placeaz 67zr7 2fmw;c -orcjd in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for itzccr;jf- o rm6wz7a27 to be suspended?

  A foam ball of mass 0.150 g c)db+glr1 y:2xh ;xvkzr,d n,g tn awwl)v3.1 karries a charge of -2.00 nC. The ball is placed insiddl vwgnv132r1kwn:,); )dx t+bzhxl.ry,a kge 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 chargia q.*7ly)g- t skdv2uf.gad3e of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?ui*.)3 als. ka7y tgdgv2d-fq

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is tz:4)mrox2 3:zi 2ngr,dv rgdvhe electric field 6mrx23 ov:i :vgnzrgz )42 r,dd.0 cm from the center of the sphere?