State the law of conservatcgs7t; ;d 3dwtion of electric charge.

  Is it possible for two nene(.vj9m qali2 m li5:gative charges to attract each other?

  Is it possible for a positiveq4b( l/+q2;8v+u tj5oi0cw ufnymhsz and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the gla ))k0fbtv1r b5vxyr 89/zqamyss rod acquires a positive charge an zv 8ayr5)q 0bvtk1rxym/ 9)fbd the silk

  A proton carries a

  The model of the atom shows +xcotrbbjgz21)8n0 ca

  A neutral atom always hat5ctmsfc jp yxfa((3*d6u e 1,ary x d(,il,m,s

  An atom has more electrons than protf rre*fh k5apk-*k+x5ons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refb zi*7d*hky6 ze8y- s pscnf +2 j.t-wssut.*berred tdbfspsk87-ieu-zy2*wtncyz*bt h. +6j ss*. o as

  Materials in which the electrons are bound very loosely to the nuclei and canv+ wp4oo*fz o2 move about freely within the material are referred4+ovp ow*z2o f to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Theqfsm4 uc /wcsm4k*/c6 end of the metal bar farthest//*m k6sqc w4 ms4ccfu from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neut tg/o enl3r9e2ral. They are placed near each other on an insulated table. Sp9n ee/ 3gltro2here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electy3rs+ ,k 47k ns9ayredroscope positively?

  An originally neutral electroscopexjk d66 lkpf*ukh,j*z(y,(hk is briefly touched with a positively charged glass zpkyuj ** (k,66xdh lk jf(,khrod. The electroscope

  An originally neutral electroscope is grounded brieflkf.w si67 g6kdiov9*:g e;gmby while a positively charged glass rod is held near it.g.6bi: ek6msw ;f9dk* og g7vi After the glass rod is removed, the electroscope

  A positive object touches a/ kj2fe x103ya4x s83pczmpi p neutral electroscope, and the leaves separate. Then a negative object is brought njfyx8pk0z13/2xs p pmea4c 3 iear the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an ins .h(l w3zuly3sulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A secz3h wuls(l3.yond 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 Coel70r hjj(c 4vjk/ kua21ws3s(a)hjeulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. ,hwc y3crze y23t-c1xThe first charge is larger in magnitude than the second cha 3 x cctcy1eh,y-3zw2rrge.

  Sphere A carries a net charge and sphere B is neutral. They are placmow :fvgosf+f ;7v8p 1ed near each other on an insulated table. Which statement best describes the electrostat1vv8s;opgom:7f+f fw ic force between them?

  Two charged objects attract each other with a3 jkzd.den.6v j+ )vgc certain force. If the charges on both objects are doubled with no change in separation, the force betwe. dcd)3v.n jjvk6eg z+en them

  Two charges are separated by a distance d and exert mutual attraclcq w:,i e(3x,fh:p r0pzvs,z tive forces of F on each other. If the c,3 zf(0 wp hx lv,e,:zs:pqircharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forcev;wd img9w7)h( idlo hx(.dm* F. What happens to the force between them i)m*mwg9hwdx(.dd(i hl i vo;7 f 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 s*j c 4z62 )jhfpuyh9- /nqunix9 deo.ceparated by 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 first elect/cjzf *doex q4unhn9yp2.ih j9c-) 6uron?

  An electron and a proton vdvomu(m+gg g(0mm p zt (kdj;y/7w7+are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is po v mg7m(dmw d+v+(pj ;(7z0myt/gguklaced next to the proton?

  An electron and a proton are separated by mou(43ez6t(w uwrjyk k3n;ae1u *- yia distance of 1.0 m. What happens to the size of the force on the proton if the electrtk r ye zwkejn- 14umo(6yu;u*(ai33won is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a squt::j;t 40 0ntgkuofqcare. 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 ce:n:u ok40qt jf0cttg; nter. 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 +tt;z w g,wdae;d,/jr placed at the centroid 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 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;ad edzt/,+j;w,tgr w other vertices?

  Which of the following is no * d(b+kvcsux5t a vector?

  At twice the distance from a point charge, the strength of the electric fiel3bb n*g ), sw5wok0owxd

  Is it possible to have a zero electric field value between a negative anj 1 b3e:khdx(pd positive charge along bj(p khex:3d 1the line joining the two charges?

  Is it possible to have a z8x* 5jg 4h 90m tggwzvynvy58 qyi(/vcero electric field value between two positive charges along the line joining the two 5vymy 9v q4gi8gg5v( zx0tyj wc/8 n*hcharges?

  Electric field lines near pl.k5i h-b) gxlsitive point charges

  The electric field shkao+rn,*s8xtsk hbm nz1, nl+6.nuc m. 3 zi;kown

  Can electric field lir hmd0q5 -;j censlt+zmx :s,:nes intersect in free space?

  A solid block of metal in electrostatic equixnd2e)qp4r 90 -w arx)a6 n/.wwr0l se;w ityhlibrium is placed in a uniform electric field. Give a statement concerning thewx)4p0;w6eryr2 ewlan9 .)xt i sa0q-w/dnh r electric field in the block's interior.

  If a solid metal sphere and 94d)x t:yjqz/ ((1axo suizzsa hollow metal sphere of equal diameters are each given the same charge, the electric field dzzxjoy/st (as4i1 )z :u q(x9(E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whermw0ryz4g s7dub.;r h( e a uniform electric field is directed straight upward. What can be said concerning the charge on0ysb u47mz wrh;gr(.d the block's top surface?

  If a conductor is in electrosb2)i0cwo7zfe :w++p5xoa*cc shug l 4tatic equilibrium near an electric charge

  A positive point charge i.5z9vmxlzr v b-7gv(3:p cjtls enclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the ho3j 7v- pzt9lzr (vgxl:5bv. mcllow sphere has

State three properties of conductqo m w*bzx 7-my:-,wmtors in static equilibrium.

State Gauss's law.

  The charge carried by one ele1kyh-,h r9jb*savi xz +e,gg,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 c xf+g: jf4a)x8/nua0gtm+lw. How many more protons than electrons does this pit +f8x04 cm+/awgjf :xnglua)ece of plastic have?

  What is the charge on 1 kg of prong tjq8wlnaxi vh:)8r*y8 d ; -x.zin/tons?

  An atomic nucleus hasvp2p2qh1 44uvjfecn/ 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, havej,s*fi:49n 6i+c ulfkxf8l fz charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themfsn*fif,9zul: k8j6il fx4c +?

  A 1.0-C charge is 15 m from a seczx a g,d g8whvo1:f(v,z1 k 6adq+q3fy5xeaz1ond charge, and the force between them is 1.0 N. What is the magnitude of txd v51+q:aazzyogk(1q d fvexz,,w 86fg 3h1ahe second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho viy o-y-; 9 9+.ulru77pcgmx/rejveg w far apart are they?

  The force between a qm 6gh;w/i-z/w+f x wy$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyxwtd 7yo;0 ito7mdq0 ,n/kma;z;a+et 2.0 cm apart, experience a 1.0-N force. If they are moved to a ooa/z x,; wt0mt mq;a; +y7t7d ekn0idnew separation 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 c4 -n;ohhva.b ieuk -(ihar b--(4 ovkuahih;ni e.ge 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 electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge o-yy )odmzqroae 4( b0m),vw -nf +2.0 mC is placed at the origin, -wb)-o)-a 4md(qn 0eyz,v o ymr2.0 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 atwrmtf;gh9owmn 797 :n x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whatrhmm:wnw;tg7 9no 9f 7 is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q(ovf3i3y1- wx t9ajgph* km ;z is placed 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 -Q is placed at the lower-left c max9z31(o vit*f h-w3p; gyjkorner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10ka f- orhft +iq;4xyxjd i6p.pt*6f+ ( m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC chadix+jat*- 4+fyfph q66t.f(p or;xikrge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = tw2atpyc)a a4: dg;i/ 5.0 nC is at (0, 0). What is the direction of thedat:wg4a )iptya;/c 2 net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila ;qc-n*dwmd(qq* w dyyhofh3y) 2ym+ +teral triangle which measures 30 cm on a side. What is the magnitude of the o -hh;w2*n+y +ddq*cdq)(fmy ymy 3qwelectrostatic force which acts on any one of the charges?

  Consider point charges of +Q u/sjgdl*re )08xte 1k eosa) 8and +4Q, which are separated by 3.0 m. At what point, or)1t8l 0xoee /aes8k sg*j)du n a line between the two charges, would it be possible 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 and a +9.0-C charge is at x = 4.0 m. Where r ys8 79:xlza vf1*azjon the x-axis can a third charge be placed so the nea*sxlv91 8a yzf:7 zjrt force on it is zero?

  Charge +2q is placed at the origin and charge -gumhh-v2y/tw6dxm/o wpj- 7o p25b c -q is placed at x = 2a. Where can a third positive charge +q be placed so that the forcpt mgjo -vu hw mob5/y2w2hp-dc6/- 7xe on it is zero?

  A copper penny has a mass of 3.0 g. A total of.ogch/og. 4jv $4.0 \times 10^{12} \; electrons$ 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 the attraction of cm8 8mpg5 2llzat03mka fixed proton some distanckgtl82 a38lmc0 mpz5 me above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a 17owecv+k yl./o x1 nccommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the ey.71x+ovecno1l/c wk lectrostatic 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 cb1j,9**rtelcxsxk x 6harge of +40e. What is the magnitude of the electric fieldbl c *k9set1*6x,xjxr at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of0o8/c( rayydir0 jnr 9 1.50 m from a 50.0-c9ja0rrdr n8o(/y iy0 nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitu oubp;fb4 / *c yxp.yr1gb6*vj6wv5pm de of the electric field at the location of the test charger p*xb;5p.*mcvof uwb6v/pgj y146by ?

  A 5.0-C charge is 10 m from a small test emlg ;1zo mzxdj86).jcharge. What is the direction of the ele.m)m 6zx1jz8ljdego ;ctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thbegb/ yjuz:oxo u( +yu71l0)ae force experienced b0jy :ua/e)y 1z7bgb lxoo( uu+y 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 separated 6:hgsu kx8q:dtie v0wymuyh 5-f 0t )9by a distance of 4.0 m. What f09gw:sku6 thmi ed0vt5q:)-y 8 x uhyis the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm marc1/xpmw :/(zp* z htjkk of a meter stick and a -4.0 mC charge is placed aj(h1 x/ /kw*pz :ptzcmt the 50 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 )m7sg aq7m3 7zqe9eiystick 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 electr7 q73ayigm)zeq9e7 s mic field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20ms:qik*s-qv ub 7/t5 h m. What is the magnitude of the electric field at the point mks/tb:v 7*qs-m hiq5uidway between them?

  Three 3.0 mC charges are at the0jw s sr)kmbl)xmnt xa(1.i c:x9n.e1 three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electrit s.w0n klc.)sxajme )9:( nm11bxirx c field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at tc:ds cdl bqn ne(.h8e)5yq*:o he corners of the square as follows: + b )hn:q.dqcsed(cey8 5l:no*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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a unil7)ugt*2wbj fform electric field. What is the magnitude of this electric fielbjl2*u)w g t7fd?

  A particle with a charge of 4.0 mC has a masq hfnmixp326m aw2d6 *s 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/C poi sj hq+4jgm*rwx0x *)xnting downward. What charge must be p* sxr+*q 0mjxwjh4)x glaced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The 4mt aii9.xvi-h-: q utball is placed inside a uniform electric field, and is suspended against the forceix a:q -9-u .vtmiih4t of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radi b7uoty-wac;i)2.o9 upge vw/us 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0;2.uwytavucg pow 9 o)7eib/- cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carr-f1,qsgiwnmy7 iw7 (dies a charge of 3.0 mC. What is the electric field 6.0 cm from thefiq w ,7y 1w-7indg(sm center of the sphere?