State the law of conservagytr3q4c8/k5nz4p-+ io xkcl tion of electric charge.

  Is it possible for twk 3sm3 /ex4/pap1otgto negative charges to attract each other?

  Is it possible for a positive and a negative charge to attracz-, jcd 1nmq.ew w(zy,ba/( kit each other?

  A glass rod is rubbed with a piec3 m5bd74g 2dhc9mlukt e of silk. During the process the glass rod acquires a positive charge and the sb7g ch95l4ut32 m dkmdilk

  A proton carries a

  The model of the atom shoisbx tj6*.6n w8t2lrb3dl ;ytws a

  A neutral atom always hacs ikjd9 8 9r)dr3db z;r;wr7us

  An atom has more electrons than protons. The atomp- lw.1mw: n48: ,ey0kj: fq 4sbt.e gsvfsjul is

  Materials in which the electrons are bound very tightly to the nuclei are referseevsu 44,-cri;va t5red 4s ,r5uv -e4aecs;tiv to as

  Materials in which the electrons are bound very loosely to the nuclei moto l 7 203 uezj36hhmuxyzer(m,5r /and can move about freelymm ezu67xzh 0ylrmoo t2h 3 e,/3ru5(j within the material are referred to as

  A negatively charged rod is brought near one end of an ,t,b+f,h pb vkuncharged metal bar. The end of the metal bar farthest from the charged rod willft +kb,h,v b,p be charged

  Sphere A carries a net positive charge, and sphere B is neutral.m a6i jovk,wt kd 6760c*/vypl They are placed near each other on an insulated table. Sphere B is briefly touch676t y kcv d6p *0mj/woli,vkaed with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posig e5w k/; kz-*nnl-eczt-bze0tively?

  An originally neutral electroscope is briefly touched with a positively ch:-a0ntt1a6o bq)8zwlnotr l( gool ,5arged glass rod. The elen,)5o -lln twbqz 8olt0a taoor1g:(6 ctroscope

  An originally neutral electroscope is grounded briefly w ct8 - tzm: bo:4djs8:ucnug3while a positively charged glass rod is held near it. After the glass rod is removed, the electrosczmucj4 3g:-o8:tu:8bts wcnd ope

  A positive object touches a neutral electe5q2 pf vmn 7aewo9g)5roscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the epq o )2vwn9m55fage7 leaves?

  A large negatively charged object is placed on an insulata9,t1 9b ppleiex1co k0yr;k1ed 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 dbc;9 y1 e9 ek,l1pt1krax0io poes 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 constant 7*b+ibnm v;bt((io8wy q6 p-*zeipam $k$, which appears in Coulomb's law?

  Two charged objects are separate7a7lby4:a v.q- bye lpd by a distance d. The first charge is larger in magnitude t7y7a :pa.ebyl4- lbqvhan the second charge.

  Sphere A carries a net charge andjlg9nceeg41 0 sphere B is neutral. They are placed near each other on an insulated table. Which stat 49jn0leg1egc ement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges o,vli.3z k/95qdlf i bmn both objects are doubled with no change in separation, the force qzi 9fml3kd/5i v.bl,between them

  Two charges are separated by ts5u-pov3jj)1r ,a 3ycdq f6r 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 newqs31 -,p3a)r dj5vtfj yc6rou mutual forces?

  Two charged objects attract each other with a force F. What happvp0qgixl ify9; ms7m tyj/9*4 ens 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 vy j970* limfsv/x py 4giqm;t9alue? The force is now equal to

  An electron and a proton are separated by mgm/0 kos,j 4sa distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to/0mo,jgss k4 m the first electron?

  An electron and a proton are separated bns,ji;+ ja7yn5 aw5sqy a distance of 1.0 m. What happens to the magnitude of the force on the first electro n,qjawsy;7a5+ jin s5n if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whaolb+6 b*y)kc e0+ldb ft happens to thel6 bcfb+ ld)* +bkeo0y size of 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 mec9v.d2 unm( m8:iow sz1ydq5v4 (vccenter 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, identical charges of -Q are placed at the other three corners of the square. What is the u5d.esm: d n 2vwzmc8ciqm91v(4(vy omagnitude of the net electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is plag1g u,wozb1 ) 2krtjb4ced at the centroid of an equilateral triangle. When a second g)u4bwzt,1gokjr21b 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 other vertices?

  Which of the following is no3 +d) ftqdoj,r c5ck4rt a vector?

  At twice the distance from a point charge, the syt 88c sw csddnaq:,(8trength of the electric field

  Is it possible to have a uaek+m16bddp; 1 np8pzero electric field value between a negative and positive charge along the line joining th1nm1;+8app pbd6duke e two charges?

  Is it possible to have a zero electriqfs ;:2fw t2efc field value between two positive charges along the line joining the two ch fftf2;we s:2qarges?

  Electric field lines near psiti-xq ydu,v9bf2h7ba5s ve point charges

  The electric field shuo6-ia9)blyx,ta : 9 zphtrr 4own

  Can electric field lines intersect inom v g,b.k*7ug free space?

  A solid block of metal in electrostatic sk*u/ x+yd f d8anv3v5equilibrium is placed in a uniform electric field. Give a statement concerydu 5/ +a*vs38dv nkfxning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equa z 2ge9ywdp*)zl diameters are each given the same charge, dwz)z yegp*2 9the electric field (E) midway between the center and the surface is

  A cubic block of alules s;q)19aha minum rests on a wooden table in a region where a uniform electric field is directed straight upward. Wl1q9sh)a e; ashat can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near q, vjno9la 8 t9..zfnian electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is groundjbsug g w;yx)n u5)y +ts)/-qmed. As compared to the case without the hollow nwgyus)+xm; b5sqt-j ))/guysphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilix d*qb)qgi)c rdog9.j,c/dk+d5km i1brium.

State Gauss's law.

  The charge carried by one elect73ae s1v;wxxcnb.(t8 v :fbwvron 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 manysvhwck827p21w 6 eh u5oyqfy ; more protons than electrons does this p;1 s7u wkwfh2 eocvp86 yyqh52iece of plastic have?

  What is the charge on 1 kho-k 35r2uvtnl 8oiv pz20*c qg of protons?

  An atomic nucleus has a charge of 2h)fntl9f:rcf0 e- e j$+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 7fpy0vi-x ql ln91giz4) a gl(cm, have charge values of 2.0 and -4.0 mC, respe7 vxlgp40y(zlf19l)i qag n i-ctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them / -ge bnj32kp ret/,xris 1.0 N. What is the magnitude of the/n,p/ k- 2b 3etrrxejg second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart k;ml 7pg4 mhf)v-cca-y 20fad are they?

  The force between a rn ,dfnwcu8/b y l)8j38,cudd$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.0-N force. o v-if;sch g8nn - .jpr07l(df If they are moved to a new separatilp( 0c .f;rjg7-onnid-s 8 hfvon of 8.0 cm, what is the electric force between them?

  Three identical point charges sfezy/ auu)bsa7 3xd0ofz:1hw *k)x+ 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 the electrostatic force which acts on the a ha+z/xffz) *u3o0 swxukb)se:7 1yd charge at the origin?

  Three point charges are placed on the x-axis. )+jc. zwakc2 h2 zynx2 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. What are the magnitude and direction of the electrostatic force which acts on the charge at)cy zz2+n2acx. khj2w the origin?

  Three point charges are located at the folla1k i.* /escj01ux eqmowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = xqi1*/.1ecumj0 e ska 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 th 5pxqpree1b/ zbl7a 6y2be; ne)m ,+ywe center of a square, and a second point charge of -Q is placed at the upb+;ebpqzynl r wpb 1e6yex/2 em)a 75,per-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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3zeduj5 appw,3 sd 34ic-k* c3e = 5.0 nC is at (0, 0). What is the magnitude of the net force o iwpa5e j d3cu-4spe c,d3kz*3n the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);7eq/ngc ;txztfa5 b o c643kd0 Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?d;t /tfo0nca ce6x3bzk g5 47q

  Three identical charges of 3.0 mC are plal3xmka +r*e e7e+uljthb))d +lq 7n7rg61iy z ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrnl 7jel1z6)y*gxa+deirek3+tu7 l+ hrmq7 b)ostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, w23 q4d:;6 jfizyshv ax1, vmtvhich are separated by 3.0 m. At what point, on a line between the two charges, would it be posqha: 3 y6vdvsix;tmz41v,2 fjsible 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 originxmyfs 8* .ayv.u*; jih e0rhg. and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third crv *guxeshy a.j.0. 8fh;imy*harge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -5 qbr7j3e:bvm3y tqn*q is placed at x = 2a. Where can a third positive charge +q be placed so that tn: 7*rqmq53ytjv eb3 bhe force on it is zero?

  A copper penny has a mass of 3.0 g. A total oj6 *(m-v qg;eb ve 4pkrmd*cq8f $4.0 \times 10^{12} \; electrons$ 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 kt jw 2qnl(k e3+ry8tss4mj0-n 80ox yof gravity by the attraction of a fixed proton some distance above it. How far above the electron is ts4 +o ew ltynk3-jsq2j(t8x 0ymnr0k8 he proton?

  Two 0.20-g metal spheres are hungp.m.)gkwt szkv d + dse8 4m;kl9i,/hg from 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 threm zh;wsdt4k.8)v.gk,/ iks l+gpd9e m ads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus hat0fjs95 blvsb/44z lj7u,qems a charge of +40e. What is the magnitude of the electric field at a distance o,ufze sm4b7j5v9ljl/ t4 0bq sf 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of oz xu1 ;*r0u7k:qw-kffxui9 q7y5 qwd 1.50 m from a 50.0-nC chargerux* u;uk0o wfwxf :91 kz d-77qiqy5q?

  A 5.0-C charge is 10 m from a small tesd qa8;bcf4s7q1pws hjxk l,e l1r27+ vt charge. What is the magnitude of the electric field atf vx k2sel 7qrp;48wc+qj,b7 sa h1d1l the location of the test charge?

  A 5.0-C charge is 10 m from qpuw+n-e3*z bpxv ;h9a small test charge. What is the direction of the electri3 +bu hwpnqv-9p;xze* c field?

  A 5.0-C charge is 10 m from a small test charge. What n,ic4n.fin+d*h 0 ntl is the magnitude of the force ennicd+l ,4f tihn* 0n.xperienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges eac(c 0mr.rsoj5 jh have a value of 3.0 C and are separated by a distance of 4.0 m. jrj(o5c.m0s r What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 c; fi5 *wb hts-ir/(bulm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What /5t(if ibr *wls hu;-bis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at e nlt+xpq420gthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whaqx402lep nt+gt point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0ypw)g7 ymiiq st+(3u0dq0 2ft mC 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 between thegdu 0)ftq7+qp y3iiy20(w m stm?

  Three 3.0 mC charges aren42ydstny/c vi*f/ r . at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mCnf/y.v*4tr c /din2ys 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 atv4jyil 3 c 9b*b,ccljocn/ 0h4 the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 ib* 0jlcvcclocn,43/ b9jy4h 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 uni ses6;gtapv5aq6b v20form electric field. What t av;apq6e 26b5vg0ss is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hash4ep/7wp:m5kol q v/t 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 placed in an eleckqm80:l6zt op)q(58 * go b0jmhzqiiytric field of 6000 N/C pointing downward. What charge must be placeo5k0 (lg jihqmoqzb8i*:mtqz)068p y d on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bal-eg)d *;dh 8 wl atai5sn4cyp:l is placed inside a unifo) dtl*scn ;h- e:dia54yapg w8rm 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 of +2.0 mC.8p zfsug.v)3 m What is the magnitude of the electric field 5.0 cm from the sphere's sur.s3)uzv g8pmfface?

  A metal sphere of radius 2.00jg giamq a10, cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the0g1 q aim0,agj center of the sphere?