State the law of conservation of electric chargetbmdid0w53mmmfa t+e ::m;.l .

  Is it possible for two negative charges to attract eacb- ikz5y4/ugt e/pd r3h other?

  Is it possible for a positive and a negative charge to at lwm5mao35zs1(5 fzo etract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ac( q-,2:.,qwh7p tby9deamtz 6vp 1 hvzrl,cpxquires a positive charge and the silk2l,1 :v hqrm d ,7hxc, 6qpevazpz.-w9byttp(

  A proton carries a

  The model of the atom sho/6o-z, ng, uggajkofw: g(qf:ws a

  A neutral atom alwaysfia-qxaa f7g e+x+y/lnqq 83; has

  An atom has more electw:7rf pgrhb ..rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleikbb: 5p6w,w9 e)nbpm x-(rruc are referred t) xkbb5n6-9epb: (pru ,rcwm wo as

  Materials in which the electrons are bound very lo7, q+gbr/03o 1l t k* uqbmzgk:(zwkpkosely to the nuclei and can move about freely within the material kq3:k u*brl k+ zmk(1gogw bq/t7 z,p0are referred to as

  A negatively charged rod is brought near one end of an uncharged metal 6 nml 5r91 vbzq73u*5tgj) tlq*vmxwp bar. The end of the metal bar farthest from the charged ml 1gblm w5r ztq*9n6vp75)3 vqjx*turod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They)b0 hd sduv:p56hyvy : are placed near eacyds )uh 6p 5vdby:v0h:h other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e8s) x+d8spuq xohaj6 8j 5vi:wlectroscope positively?

  An originally neutral electroscope is briefly touched with a positi7m:rf*ozdw7r+ stz5j -i u7 ygvely charged glass rod. w7 7g-: uisrorjyz f7*+tmzd5 The electroscope

  An originally neutral electroscope is grounded briefly while a pu7 iw+*1 tgjncositively charged glass rod is held near it. Af *+1igjwtn u7cter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Thev -bxesb6cqt5der8-( s8gt i4n a negative object is brought near the electroscope, but does not touch it. What happens to6cgbrie v-sd- et88 qbx(t54s the leaves?

  A large negatively charged object is placeb 9fhdhg. 8c v3chnt ,tf6/9xgd on an insulated table. A neutral metallic ball rolls straight toward the obje.8h/ctg n t6vf9cdb fh,hg 39xct, 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 Coulomb con*/+cm 2t )dt1g;vwj2oo qeanvstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The ftpma r:zoz1pz(my c 8 nl:g+y(3zu+ n9irst charge is larger in magnitude than the second :lozgpzm(yc tm3az9p ( r8 z1u :+ynn+charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed ,pk4f n02 ltsknear each other on an insulated table. Which statement best describes the electrostatic force tn42l psk0,fkbetween them?

  Two charged objects attract each other with a certain force. If the charges oen2 sjelw*jttx4z65a9 8h n9q n both objects te lh 896nanqj9j*x24ts 5 wezare doubled with no change in separation, the force between them

  Two charges are separated by a distancv+3zlnn-seblh 6s1( be 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 nesb slh36( 1+nn-vlzebw mutual forces?

  Two charged objects attract each other with a force F. What happens to the opt .ict) ypvq4bbjp +;/ 3dpi-c b(6mforce between them if one charge is doubled4 t(.b v /y6pb ;qcpm-ipjbio)d+t3cp , 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 by a distance of*hza 0 1hqfx54qh0kgm 1.0 m. What happens to the magnitude of the fo4 *qmh 0q0zhf1kgah 5xrce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distw 4 ,0c/;s2yfy,xe nufi* yjaeance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nex,0 ;s/ne u *4ceixfafyjy,wy 2t to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happ zlas;fb,g p) -d),zmnens to the size o,f-z; ), n )aslpgbmzdf the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the ce zhwioei2v.cz)m -4z6nter 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, ide64 h z zcveii2w.omz-)ntical 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 equila ze)bl/7a+rux:xk vtkiwo)tolx +20. teral triangle. When a second charge of +Q is placed at one 7z i)tabxuktx)x w./l k:e 0ol2 vo+r+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 vectobw-w jqcr)o8g*cq6* i r?

  At twice the distance from a point charge, the stkte 5+po/u7n zrength of the electric field

  Is it possible to have a zero electric field value qiqu es.dg.r -vhs9 o8hx h(-ah8(ey,between a negative and positive charge along the line joins9qsd h qx-.-h uhoriv.(ye8g (, a8ehing the two charges?

  Is it possible to have a zero electric field value betweer6p as ja 8jh6(4id9-uo2i3liz8udai n two positive charges a ra( ad3j8ji -ho68aiuzls6 u9 4pid2ilong the line joining the two charges?

  Electric field lines near psitive poinvj9f8prn s4.r ddl/1qt charges

  The electric field shown 9mbpvjt; 8(uf ,dv0neszxr w q)d1g/ +

  Can electric field lines intersect in fre0 duuppp+gmhs8,/ub+ e space?

  A solid block of metal in electrostaticn0,b 8 , szkgt wrafg6weh1r5, equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block's it1rw,wrs0 86,gg ebf ,nhk5aznterior.

  If a solid metal sphere and a hollow me)av:s(j08 gc(uopeugbu w(;l tal sphere of equal diameters are each given the same charge, the electric (l0s a:)oc;8(w(bj pveguu ugfield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region 9 de6iz9oalfb81 cll7where a uniform electric field is directedac769lf9z b o8li1led straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrosta (wey/ec n)-.ipk4kr qtic equilibrium near an electric charge

  A positive point charge is enclosed in a hols )nqioc daqyz1tv 7 97u-..chlow metallic sphere that is grounded. As compared to the case withoutavycsq .ih.79c n7zdo 1-tq)u the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of con86rh4r88 y 5efgal1:i ((pkyk *p8vagzbbj llductors in static equilibrium.

State Gauss's law.

  The charge carried by on.3-pip2 5dy vfyaz;q de 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 protons trmx *ec np7q86han electronsq em 67*xcp8nr does this piece of plastic have?

  What is the charge on 1 kg of protonthm5rglu0vd 8 2zr/v)s?

  An atomic nucleus ha*p0ioc io3k-,aq4dd1lo fs u7 s a charge 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, hars0 g gg-o td+* zv,g6nx)wnq,ve charge values of 2.0 and -4.0 mC, respectively. Wha no+txn,qd,v0)g-w sr*g 6g gzt is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betweenmon9 bvt(k/-z ux6p t7 them is 1.0 N. What is the magnitude of the second (ot76pnk9 m uxz/bt-vcharge?

  Two 1.0-C charges have a force between them of 1.0 N. How fd nq1dmry,ou ,9mpu7 0ar apart are they?

  The force between a ,r(ey/8ped4 8*ue -ypmupkem $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, ext,iegd90/s c lks*w.*c7pli uperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force 90cs k,ep uwlsdt.ici ** g7/lbetween them?

  Three identical point charges of 2.0 mC are placed on they-cfti y65kz * 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 ma-ykzti 5f* c6yrk. 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./r); wkeiqjqcrf2 v n95g g+:y A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, andigeyn; c )vfr +5/:9kqgj2rq w +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 posxs9fw, .42sb8hho rmpi*se2 iitions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC is4,f 9 2bwxp.r8hesi2h m*soat x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofx+js( ct1:nwdww) a t*q0;hp n a square, and a second point charge of -Q is placed at the upper-left corner. It is observedqtwahwxn0 p1tj*s dn w(:c+); 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 -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0)l o :-jzggpyz1 uf(on+ 8mfi4,; Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0,8fnoz, fy 4j 1-i:uopgzl+ (gm 0). 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, /hn*c. 6uhttomp/+k ynmv0u1 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the dirctku+npm1u. 6tm ovy/ 0*h/hnection of the net force on the 5.0 nC charge?

  Three identical chargesb 8yzn:1cp zu0i2 hvhq3s. 3pp of 3.0 mC are placed at the vertices of an equilateral triangle which measure:yp b 3h1si2p8h3.c0q v npzuzs 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, which are separate zfo:s6,wtc0cj7e hkl0y4t 431x e zmxd 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 elehz7ol 10ctew t30z,x6 x :skm4cf jey4ctrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at xgxe9- b 6vbw /+ddyvorh62(kj = 4.0 m. Where on the x-axis can a third charge be placed so the2bkd9v 6 (w x/rd6byhoejv+ g- net force on it is zero?

  Charge +2q is placed at the origin and charge:g hz tjv3y ja9./x/uo -q is placed at x = 2a. Where can a third posivxyah //u9g3o:jzj .ttive charge +q be placed so that the force on it is zero?

  A copper penny has a mass oo;j2lgdz 7bk9pl2nm*r6 thzo az5 3)w f 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 for q;k gc zuc-vppbja.*sa +88m8ce of gravity by the attraction of a fixed proton scmp8a8+ a-cs.b gz8jkvu;q *p ome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductwo*xb:zjbe+z pw 7/c* ing threads which are 30 cm long. Both are given identical charges, and the electrostatic *:poecwwbxzj7/*zb + 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 of th,t rqhi*k(pdv4u2lcinb 1-x;e electric field at a distance of 1.0kh intirp1*4uv-;,2b (lq x cd m from the nucleus?

  What are the magnitude c)g o/pi4g.eoand direction of the electric field at a distance of 1.50 m from a 50.0-ge/ ) iop4oc.gnC charge?

  A 5.0-C charge is 10 m from a small test charge.ztq60m noj) qlq e3g;, 5qjtqq2 ;zik90 :yfcp What is the magnitude of the electric field at the locationq 3cn le t5;6,y zqmf:90;q jqpqj2igt 0zk)qo of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directi11odt7hr1.h do kv x xb4h9g2lkkvr (9on of the electric fieldo1k 9lrh(9vvd4 bxx kohh.t 21d1krg7?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude uz0zt7fyoupnp)5z+x ih06)k of the force experienced by a 1.0 nC charge placed at the location of f050+p7t6 z))uzu pnzhko yxithe test charge?

  Two point charges each have a value of 3.0 C and are separated by a distat + m gvaktl43z1m*xq/nce of 4.0 m. What is the electric field at a point midway between 4vqml+* /3makx1tz g tthe two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC 6b jhgqjdco+;5mji42 charge is placed at the 50 cm mark. What is th cjmjg 6i;q54h+j 2bdoe electric 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 mC chargeadid,9jy)t bpp +0ue( is placed at the 50 cm mark. At what point on a line joining the two charges is the 9(da ,i y)p0bdjue p+telectric field zero?

  Two point charges of +3.0 alz0pzh qn/s e8(fp,5 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the hz/0apszl( f ,8pne 5qmagnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at tpi ,u45t ewyw82lblwktr 68k* he three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eleclw48w8blw25p* tier6kt k, uy tric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placmhu go /vsw/4+ed 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 fielvu hgosw4 /m/+d at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed i*a*,lyp6ecom n a uniform electric field. What is the magnitu* pa,yce*o6m lde of this electric field?

  A particle with a charge of 4.0 mC has a mzyjs z *marw9; ad.,x+ass 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 6000jzceo -:j: fj1 N/C pointing downward. What charge muse: j1 :jfjco-zt 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 b lr+ 77btlynuc2. elw+all is placed inside a 2 .++nl7w b u7rtceylluniform 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 charge zc; f. 6aq(hbn)g.llx of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphczq6.g lb f)an;l( h.xere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electc3:sk/zj3v0 z2hnkst ric field 6.0 cm from ths 3t:v 2zsznj3kk ch/0e center of the sphere?