State the law of conservation y htq: uu9yxes:w)jgg* qg .;tj q8:+wof electric charge.

  Is it possible for two negative charges to attract each o+e3gt-6k87vb fmulsh yg.5 suther?

  Is it possible for a positive and a negative chbyl7 fa skwq9,rb:2j, 4p4g eh4kjns 4eu, 1sqarge to attract each other?

  A glass rod is rubbetm go )4t9326 zqov: 8r qzqqwl:sn5nxd with a piece of silk. During the process the glass rod acquires a positive charge and the silk 5 l qqz 8s6om:tqrwv:4gnzt92o3nqx)

  A proton carries a

  The model of the atom shd(b+b 2gcqhr ,ows a

  A neutral atom always hmai- 6 ,psk/ibas

  An atom has more electrons than protonmlm 8ei u)4 e)nvo)agcdt.8*ss. The atom is

  Materials in which the electrons are bound very tightlyh. lqhrw5a8 w( to the nuclei are referred tr 5h(qw law.8ho as

  Materials in which the electrons are bound very b;cf g/e-q/xsrt6 3kek;ywkwqm41k+ loosely to the nuclei and can move about freely within the material are referred to awy// sefrx em-1cq4+ w kb6;k;ktg3kq s

  A negatively charged rod is brought near one end of an uncharged metal bar.bi )v,f1e 8vqb The end of the metal bar farthest from the charged rod wil ibevbv)q18 f,l be charged

  Sphere A carries a net positive charge, and sphere -o,cw1gtz(px zbk2 qc- onf6 ju5) mj.yf:6dqB is neutral. They are placed near each other on an insulated table. Spbc5go- jxk (z) ,c26-o. qztwnu:fmjyfqd16p here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge ez+f.dk7w23ggy z;0c e/gwy y/x(bvrqof :+ aan electroscope positively?

  An originally neutral electroscope is m) s(9fdts mfus5q ezpv-9wi4s3/0j9bnr 0 df briefly touched with a positively charged d)sf05pwi su/m vr 0 zs9394sf9bfmq-en(dtj glass rod. The electroscope

  An originally neutral electroscope isg5, qjiy7fm 55snm /q-( hvqlkeb.ym; grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electro i.55jg; sk n7hlqmbq(vyefym-mq/5 ,scope

  A positive object touches a neutral e8js9rmcps-70 zzlrzx(7 c (o alectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not toucm z coscpr70 -xr7l8z(za (j9sh it. What happens to the leaves?

  A large negatively charged object is placed on anigd*)l5ji /4-xf qb je 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 by the first ball, strikes the first ball, and stops. The first ball rolls forward, but does not touch the 5ljbfgqj4eii- d*/ x)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 1fdbj +xc)h 3cCoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects ; ik5j u *9ubomdow bd(x+e1s/are separated by a distance d. The first charge is larger in magnitude than the secob9odd k1/u jo5+(s* iuw b;mxend charge.

  Sphere A carries a net charge and sp,qkuf w,c ao;;nnrj-:here B is neutral. They are placed near each other on an insulated table. W;nckj: rwu-fq, ,n;oa hich statement best describes the electrostatic force between them?

  Two charged objects attract eac1)7hudksa9 b7: k emtih other with a certain force. If the charges on both objects are doubled with no change in sepakmkiehs91tdb7a :u) 7 ration, the force between them

  Two charges are separated by a distd l , ynzvdl4:0sa*y2jp;x ty 1)z(qftance d and exert mutual attractive forces of F on each other. If the charges are separated by a di*d0y(fax: s) 2ndzylt; tvz,pj4q yl1stance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fog 9f*,e*:d/mnxe7:mbw iku wke58chorce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their cent9,mkmf xnb8 :kedh ge*o:5i*uwcew/7ers 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 happ 8h vkeyll;eu0aoe58 3ens to the magnitude of the force on the proton if a second electron is placed next to the fir eu 83elh ol;0e5vayk8st electron?

  An electron and a proton are separateds( n6sx4..5uhbg lchu by a distance of 1.0 m. What happens to the magnitude of the forb4 u6 ..5 hulsn(hgcxsce on the first electron if a second electron is placed next to the proton?

  An electron and a pro;vbf /sj +ox9wton 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 m closer to the protb9/w fv ;xsj+oon?

  A point charge of +Q is placed at the center of a square. When a second point:.o/rl um9 /eb do- (og h1zqn3gkm;xs 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 electrosta3mbm(rseu;n- okzghg l:o//x. oqd19 tic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroi be3a0,kov h,ujie;e 8d 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 actj b,iahv30ok 8,eu;e es 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 :ac2c ;q -i g9*p i-rq7xqoolmvector?

  At twice the distance from a point charge, the strengt-)z+mtayf ui*msy ++y h of the electric field

  Is it possible to have a zero ele .ft8nv86 ).hf(*t2 khkbp cqyqcqdl,ctric field value between a negative and positive(h 6v t,ffy clt) .nbc.hk8qqqk8*2pd charge along the line joining the two charges?

  Is it possible to have a zero electric field value b *8ma(w kk qzk-5efg1wetween two positive charges a5fzk -k1mwge*( kq8wa long the line joining the two charges?

  Electric field lines near psitive poi 0y tsxc,n1ee:nt charges

  The electric field shown;sulj o7poct6e 8q ja1;f +7zzc8.pcm

  Can electric field lines inteko*f7 yeth(8m rsect in free space?

  A solid block of metal in electrostatic equilibrium is placexc xdeghr*13 0d in a uniform electric field. Give1 dhc*ex0xgr3 a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sph;i2mivcdqb bc oci 8b(*9/ip)ere of equal diameters are each givi( c2/ opivbb bmq9 *;8cdii)cen the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where ard3 l yr-ep*x3abo-.e uniform electric field is directed straight upward. What can be said concer3-raexo bp3-de*y lr. ning the charge on the block's top surface?

  If a conductor is in electrostatic eqybvn4m,9 l zqn-tt)y7 rubk 07uilibrium near an electric charge

  A positive point charge is enclosed i3x wza;q qeeg5b fv 5/t*(1axin a hollow metallic sphere that is grounded. As compared to the case withou g wx5tqab *qi;fa/315(zxevet the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriumcbkt 89 8o6ue8rf(u3 m gzgoj;.

State Gauss's law.

  The charge carried by one el+6 r4:qm9gzf nojw*uhectron 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 of3t yyq1hav44wn, 8r cty*+kcq +2.00 mC. How many more protons than electrons does this pi yraq43w4 +*81,hk cycqy tvtnece of plastic have?

  What is the charge on 1 k(e3 hqn vgdr 1i2lxj:-g of protons?

  An atomic nucleus has a charawo 2lt*(gm1a :5chygl do0k -rb52llqg 3t r)ge 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 *y*uc1nvd 0:wsoxed0 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between them? :yd*u010*d scenvxwo

  A 1.0-C charge is 15 m from a second cha wqlw3o /,xgq huy34s0rge, and the force between them is 1.0 N. What is the maqu3ow43 g hsl,w/x y0qgnitude of the second charge?

  Two 1.0-C charges have a force betweomyryud75 8 b6en them of 1.0 N. How far apart are they?

  The force between a +kys2j dm(a+x i0vmy) $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm aixx:9j j1 v o4cjt2w:ppart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electr1xop92c jj:t:w i4vjx ic force between them?

  Three identical point /73zjr,h-3fyes0 uf xt5gj4fx h6 slbcharges of 2.0 mC are placed on the 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 jg5hr06 j/3 se4t 3yszhxxu, bfl7-ffthe electrostatic force which acts on the charge at the origin?

  Three point charges are placed ondln23 ,xdq(ns 4n x1 4rxrfwdr-oa*i8 the x-axis. A charge 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. Wharxrw qn3da rn(*1dd -x8fs4 l4 ox,n2it are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at tmq (,a9xcil1wq4 to bt w1b*+fhe following positions: Q1 = 2.00 mC at x = 1.00 m; t,o1wqmx*t wbbic4qa +1 l9f( 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-mC charge?

  A point charge of +Q is placed at the center of a square, and a second pointo*kmp 7get 6 l/yk+k;s charge of -Q is placed at the upper-left corner. It is observed that an electrosta7e +to6*kkkl/p;sgy mtic 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 (068hu fwu;( lwrf 5zr27shzl,l.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the m;zl,6(sf257h lhwr ulw rzu8fagnitude 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 = 5dx q,t *;sjiku;(prw/.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nCiq k pjwdurx;,(s/t;* charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateu-c h4zeu;f;x ral triangle which measures 30 cm on a side. What is the magnitude of the electrostati;;euuhzc- 4xf c force which acts on any one of the charges?

  Consider point charges of +Q and +wh4o o 9;3u9dqse(zvp4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possiez; do( o9q3uw4vsh9 pble to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin x6*zebyju6 r b8410yhkvf a(c op ;9d+gyj4beand a +9.0-C charge is at x = 4.0 m. Where on the x-axis cavxkf41 bodecybh0u4 6 ej6py(b gya9j; 8*r+zn a third charge be placed so the net force on it is zero?

  Charge +2q is placed at thec-b nd-bp7u*c origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so t dcub pnc--7b*hat the force on it is zero?

  A copper penny has a mass of 3.0 g. A totala3 jpe1z-az.(e/mkkh;1t xl x 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 gr s):ive-m i7z(iam,xzavity by the attraction of a fixed proton some distance above it. How- 7xs v,ez(imiia:m )z far above the electron is the proton?

  Two 0.20-g metal spheres are hung fr:p3neee*s(:v az6x gkom 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 threx 6 vagks(ee3:*:zpneads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge og (o b mmxm9*clt((9cqf +40e. What is the magnitude of the electric field atom l9cm xcbtq 9(gm((* a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1. vwgf(x: y ca+l c(0vo9n:(hid50 m from a 50.0-nC charge? :(y9vdfoncg a (l:hxiv(0+cw

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tirz *,weywd26he electric field at the location of the test charge?,*2w6z e dyriw

  A 5.0-C charge is 10 m from a small test c t)zg/ 2qg,hygharge. What is the direction of the electric field?2qg,g)y g /htz

  A 5.0-C charge is 10 m from))gkm3ss wgc3 a small test charge. What is the magnitude of the f33cggs)m)kw s orce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separagmmb uicn lyqe c*jy6q6b 75+x/l.)a6ted by a distance of 4.0 m. What is the electric field a/b*aqmgxinb y5 +qclu6) .e7yj66lmct a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm tm.7s .+k czc5nx x8udmark of a meter stick and a -4.0 mC charge is placed at the 50 u8zsmdkct .n +cx 5x7.cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter 0auz qdt,le570xu3y9kskv s .stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is0 ,ad xyz9.lt5ks3k usqu70ve the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m.2yg pj 0-3/frj vhq2ge What is the magnitude of the electric field at the point midjypjv e/g-r 2203hqg fway between them?

  Three 3.0 mC charges are at the three cornefjxdk1cr 8bgq86t03p rs of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of pdqb6j1t83 f8cr 0 gxkthe square.

  Consider a square which is 1.0 m on a side. Charges are p7g. t5 bjjjo5sk2g uz,laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1)j.tu 2kozjs5j7 ,5bgg; +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 chaq(ot.mvl*6p1jhmp9/bby 6oj rge of 5.0 mC when it is placed in a uniform electric field. m6tl6jbh (p9 1bv.joom/q*y p What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has av;rz .wf.e9se. + ;ri6nufgtz 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.+mct-njg6y 7s120 g is placed in an electric field of 6000 N/C pointing down6-gc s ymn7j+tward. 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. Thu n+*16or arm2-firyf e ball is placed inside a uniform electric field, and is suspended against the force of gravity. What arany fr2r-m o*6rui1 +fe the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a ch:pm+qp ef,k*karge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's sue+:q ,pmfk *kprface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0o n)xwb/3y f2 ;fozyp;0 oi.ky mC. What is the electric field 6.0 cm from the co0fyonx .w/3b )opyz ;k2; yfienter of the sphere?