State the law of conservation of electric-pkft;9z;cs 1ks x fx9 charge.

  Is it possible for two netzzvv/k7q ;t ,gative charges to attract each other?

  Is it possible for a positive and a negative charge06yo8 jjudsrq 9 4npp* to attract each other?

  A glass rod is rubbed with a piece of silk. During the proceswq1ej)o/gj j1f ,y+(xk p c(vks the glass rod acquires a posi (1q y cjgkx kj+f,ov(ej/p)w1tive charge and the silk

  A proton carries a

  The model of the atom 4js6dfbk;nvj qz,/k*6 vw z w+shows a

  A neutral atom always iy8 2xx52mro c f/*kbfhas

  An atom has more electrons than p t5+u ltg*:kyusd 1)rqrotons. The atom is

  Materials in which tx)l.r+0yq dp7ccw8fyhe electrons are bound very tightly to the nuclei are referryp7)y 8c xq0f .lc+rwded to as

  Materials in which the electrons are bound very 0yw 5zxg 5.z;h+o hsvploosely to the nuclei and can move about freely within05pzhs y;xvw5.hz +o g the material are referred to as

  A negatively charged rod is brought near one elhgz5ba b1:b) iveq3) 84n49 ixydyo bnd of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chab y )enbq) a4:4y19dobgi3h il8xzv5brged

  Sphere A carries a net pwc s1g y3mx am-:xbo r;*emj. +br),faositive charge, and sphere B is neutral. They are placed near each other on an insulat macr-mx,orys 3 1ex*f) b m;:g.ja+wbed table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge anb/tkbt y*v n572 xheo; electroscope positively?

  An originally neutral electroscope is briefly touckko dn,,f6+y jhed with a positively charged gl,nfok,+dk j6y ass rod. The electroscope

  An originally neutral electro5+cc wnm. t i js,szqn,b78rzyt tnm g./02-ptscope is grounded briefly while a positively charged g tnw +srt zncbs,jgm.5yn 7ct8z ,20 tp./imq-lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neut2yy,alg*cvi +pvv;( )pnw: ; qlk1kesral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but dogy(v v cp ;:klva1nse;w*+l2iy ,k qp)es not touch it. What happens to the leaves?

  A large negatively chyvb:j6:i 97g 8o kh5zliz+cibarged object is placed on an 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 negative object. At no time does either ba 5vz:b:c67 +io jlg9ihk8 zbyill touch the negative object. What is the final charge on each ball?

  Charge is

  What are the units of the Coul4ydp*p6o+j f nc5bz1r omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larv e-vyhy5x8gb5o1, j xger ij1 b,o 5vyx-5hyegx 8vn magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutrjt wuh 9x0pf8xc8tw/1; d pe8q86 eetyal. They are placed near each other on an insulated table.p 8uf h exjwp 09qc;/et8 t86wte81xdy Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges xiq, wvz2yinic (zo *:,y1xa-5z* etf on both objects,z 2zft*zi:*iaxw yyo-i(nc , v 15qxe are doubled with no change in separation, the force between them

  Two charges are separat,zhqru rdq(fa82/ds : ed by a distance d and exert mutual attractive forces of h,q a( 8qrs:/df drzu2F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. r -ggavmi u8x(ao45z4What happens to the force between them if 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 fo u8oa4(g4rzigvam-5 xrce is now equal to

  An electron and a proton are separated by a distance of 1.dxudb)25y0b u 4j1u wt0 m. What happens to the b y 2uj0t541dudxbw )umagnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton w kxte9 94b y1w uu4.tk9dna)5sh 2mhuare separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if9s5hkmd h 9x 4n)w4eak u 2utw1.9tuby a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happe;:olq pkqwb;uz eyg17r e2u0mvyu p4 05e 7j-gns to the size of the force on the proton if the electron is moved 0.5-qpbp1 yzjlwg;m eqvu ou4;ke 00 7yru2g7:e50 m closer to the proton?

  A point charge of +Q is placed at the cezosf; 8,b5 kjc s/ac2dnter of a square. When a second point charge of -Q c/bsaosk 2f58c; jd,zis 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 force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at tgn3t pt8sxzg ty6:57the 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 tt7s tg:8tzx p56y3ntg hird charge of +Q placed at one of the other vertices?

  Which of the following is not a )lg1lll2i* (zaoc br+ vector?

  At twice the distance from a point charge(/mcen-do/0 p -yfds n, the strength of the electric field

  Is it possible to have a zerl2)+k- w79kfaflk ice.e j:hz o electric field value between a negative and positive charge along th j-+lz h9ce)k. ak:iflew72kfe line joining the two charges?

  Is it possible to have a zero elec1g( exuuzzdc(lr-0)hy2r)u o77hlod tric field value between two positive charges along the line joining the two curl0eydh 7)(2-x1ug7ozc z (lrd ) huoharges?

  Electric field lines near psitive point chargd0imk ev;vy4a iic.-8es

  The electric field shownk7y6fth 048vbh q8b. 5uqyl iu k9/xln

  Can electric field lines int8k/ax1l2t6 sgvq1 qmgba.f3e ersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform r3g1idk/ s slwl2uk.l)8q q-q electric field. Give a statement concerning the el l 3s.l klsg/qkq8wqr-2id1) uectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of elim-h 9;xlktrj e7o 21qual diameters are each given the same charge, the electric f tl7jh; 2x k91rmiole-ield (E) midway between the center and the surface is

  A cubic block of aluminum rests on a 72f5v sm2+ d6knet1dt/iqaa ywooden table in a region where a uniform electric field is directed straight upward.5d vef/ yi aqtdk7+2a1m6s2 tn What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chxpr l7 2z/+rik7n q.nuarge

  A positive point charge is enclosed in a hollow metallic sa ;xja**liv-i-n)w gnphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere h ailvgwj a*-x-n; )n*ias

State three properties of conductors in static equccps2,enj 3 y,ilibrium.

State Gauss's law.

  The charge carried by one elec8tkp.bm eto6- tron 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 ht ) qn-ww9q yf4j, ;20qiflbgmas a net charge of +2.00 mC. How many more protons than electrons does this piece of if 4l)- nw9t2b;0qwgqyqj, mfplastic have?

  What is the charge on z auqjgud*1g 2)p (;eo1 kg of protons?

  An atomic nucleus has a chprm fr0hr*+i *arge 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 charge values of 2.0 and -4.0 /f(bxpi- ;ca:sf2,su :ev ww umC, respectively. What is the magnitude of the el w :ba(ipw; cufs/fx- seuv:2,ectric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet6z :3 , zhui/h/kdeqqvween them is 1.0 N. What is the magnitude of the k:6dvi3hq /z,z heq/usecond charge?

  Two 1.0-C charges have a force between them o+scg+g3nfm 0y v twg-5f 1.0 N. How far apart are they?

  The force between a 5yqcn 4 s+mh4w$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience/n e*ykta,bq 1 a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the */qk ynteab1,electric force between them?

  Three identical point charges of 2.0 mC are itf5-yus-jr7 x b*9r m zcpw95placed 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. Whu5 bcfr5-jy79 m- 9xpi*ztsrwat 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 of +2.0 mC is placed k.)z uae)r(m:lz 1cwa at the origin, -2.0 m C to the right at x = 50 cm, and +4.0k )lwu:a.mzrc zae() 1 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 lo:+ ,48igkmsqx k-upxmcated at the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;-pkxuqs8im, +mxk: 4g 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 point cha.u(f7xpa;6p ym haie*rge of -Q is placed at the upper-left corner. It is observed that an electr*y fmapx.( iea6h7u p;ostatic 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 q2o; n+9xux( yymtrt* m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the m+mn (u;xyt*qx ort2 9yagnitude 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); Qzjf-t9c88tzyak6 t-k 3 = 5.0 nC is at (0, 0). What is the directio-z9katf-8kj 8 zc yt6tn of the net force on the 5.0 nC charge?

  Three identical chargesm-(8q: lvfsba8* 6aot: r2cggqkt)kmnge8t/ of 3.0 mC are placed at the vertices of an equilateral triangle which measures qt:*cfv/b(lm8ta -e:k2ng gq6 a8)ot8rsm g k30 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 separated by 3.0 m. At wha ;yaynqsfdn-pi:(,z* t point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force acting on d(zpn,asq n-f y*:iy;it would be zero?

  A +3.0-C charge is at the origin and a +te(;7o psucnzs51 ct59.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so; u15s(75e n ztsccpto the net force on it is zero?

  Charge +2q is placed at the origin and cxl;ufnl0lhk:/ -dx ,h harge -q is placed at x = 2a. Where can a third positive charge +q be placed so x knlfh0;:xldlh,/-u that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalog31c5fb0 l vh 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 the attraction of a fio d1)g8zby( agxed proton some distance above it. How far above the electron is tzod8gy)ba1g( he proton?

  Two 0.20-g metal spheres are hung from a common poi5,;sfnu(p+mrqwy 1lqnt by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them1+qw5y; umr p,q(fln s apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge wt(mo.nrcv1o 8g7 *jcof +40e. What is the magnitude of the electric field at a distance of 1.0 m frtc n o7.1g*(cv8ojm wrom the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1.q.ve mzhzn 8kzi92g9550 m from a 50.0-nn 5zizhkv 8q. z29em9gC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magniw)syrw u+ )yn,tude of the electric field at the location of the test char ,+r)y)suw nwyge?

  A 5.0-C charge is 10 m from a small te;mq+fa5d;yb6yda ; b uvuw25gst charge. What is the direction of the elaqug uy;a+ fv dw6 2;;d5b5ybmectric field?

  A 5.0-C charge is 10 m from a small td g0ykmy2m +j.est charge. What is the magnitude of the force .km2jgmy y0 d+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 ares;w57 6o ysr 9a.qpuuk separated by a distance of 4.0 m. What is the electric field at a point midwuk;5s6wo.7a qsrpu y9ay between the two charges?

  A 5.0-mC charge is placed at brzo9az pwj504+ q9gdthe 0 cm mark of a meter stick and a -4.0 mC charge is placed a09qodbz4+z9r g 5jpw at 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 meterk.hjp u ,sc5wvp +1j+d stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges isjk 5 +spuv ,+cp.hw1jd the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 j5v(kaauvd)+ m. What is the magnitude of the electric field at the v jv(+5uka)d apoint midway between them?

  Three 3.0 mC charges are ws6a9h4+s pmt at the three corners of a square of side 0.50 m. The last cornwm asth64p9+ ser is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the c ovp9h4kd;a /worners 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 ma;/v4ohd9p k wagnitude 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 afa 6j w,q7hzd/cuok4w9mr n.5 uniform electric field. What is the magnituwh96m .djrzoa7f45k/u, qc nwde of this electric field?

  A particle with a charge of ap,lqo-lx0w ;8- yci h4.0 mC has 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 pls: i /ibsu/rq)aced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fori uss/):rbi/q it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pf k c axes44nsc.*.io4h4ul2nlaced inside a uniform eh4k 2fl4n .si*a.ou44cncsxelectric 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 of +2.0 mC. What is the magnitf.fjv m.ap9f;pd k-odu59bp 9ude of the electric field 5.0 cm from the fv.o.km99 ddu fbj9 -a5pppf;sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC8b z0l uqvo 1;)se)xdn. What is the electric finve d1bo qxu8;s ))lz0eld 6.0 cm from the center of the sphere?