State the law of conse g0zf e5l(pjk)rvation of electric charge.

  Is it possible for tb/av jv,dmhb-, +7wfg t e:6qy3cy :guwo negative charges to attract each other?

  Is it possible for a posi j/kbfo*(l/h zdoz65 ptive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the proceksad4d/4x7koab 6,j sss the glass rod acquires a positive charge4ba76ds jsk 4xo/adk , and the silk

  A proton carries a

  The model of the atom shows j dbq zc02l)wfi;dv7.i4 xb3b a

  A neutral atom always he ql/.5 j ek;m*tv praedam47.as

  An atom has more electrons than protoa q8pg5v:txj-p.e;tjb 6 bc c(ns. The atom is

  Materials in which the electok-f) 8nrxrh1d.eyq.4 u 2gjwrons are bound very tightly to the nuclei are referred to ar geo) .2r4wh8uy-xj. 1fqdnks

  Materials in which the electrons are bound very loosely to the nuclei and cafvz/zj: ez19q n move about freely within the material are referred to as1jqvze 9/ fzz:

  A negatively charged rod is brought near one end of an uncharged metal bar. Thehk. ;pjr8id zt4d-y )f end of the metal bar farthest fro8r ;hp fk-yzi4.jd d)tm the charged rod will be charged

  Sphere A carries a net positi6e ,n*it q0zzm;ri t0xve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is c;00, *rzemqxz6ttin iorrect?

  How can a negatively charged rod aspxmd0-ug,; nkitd:d+d +fg-5a s;i charge an electroscope positively?

  An originally neutral electp uy+0 fqjcln*b7 *nx0roscope is briefly touched with a positively charged glass rod l07py0b*qf un+ncxj *. The electroscope

  An originally neutrag6 g6kcim3wu *s /isv:l electroscope is grounded briefly while a positively charged glass rod*csk 6iw6 mvui/3gg :s is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopx-nkjox3 g.z +*kzyi; e, and the leaves separate. Then akz-k j*;o 3zx+.xgy ni negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object +s: y xwkixt0nr t(.2vis 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 rollxt0t (2w.+ x: yiknrvss 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 constantt-ly8bfidq)(y31n,1 :qyxf owwjbz sln. 8p: $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is 2eissisk( 68w5)v rw,p7r qfh -o1taslarger in m2vwisq,-1s (wrss ohfkp57re8)tai 6 agnitude than the second charge.

  Sphere A carries a net charge and sphere B ipedr/4cx5at 3 ookh/d3p d7)ms neutral. They are placed near each other on an insulated table. Which statement best describec/mdx47 opetp k d3o)arh53/d s the electrostatic force between them?

  Two charged objects attract each other wi*vwp*3hn evti s f)q xs.u31vx9v)5yqth a certain force. If the charges on both objects are doubled with no change in separation, the fo3)vswphiqe .svy *1vnvfu xx9 )t5*q3rce between them

  Two charges are separated by a distance d and exert mutual attractive f 6os5t8 vnp. nxor *+, :d1ymrgshgeu.orces of F on each other. If the charges.r 6nxtg8vodu 1hpssg rm.+, e*n5o:y are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a fog1i2tc r (udqmq+tj+bg/ .1 (c,d dh5cie9gx yrce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance 1t,bq2cd 1y i tc5+dxrhedg9(q mcg(/j i.+ug between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are dw2we 2xx(lu6 uu4unm1 i)yb2separated 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 elecw6xub2u y(4 weilx1 d)2unm2 utron?

  An electron and a prot morvk(v5a95o c yi e2dluk+9*on are separated by a distance of 1.0 m. What happens to the magnitude2koa 9ed9*rcvuyi( 5+5klvmo of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens b4yr1ywaijq: v; *f0/p mwaz(fi+ iq4to the y b4fiz+rw /wifvi0;4y:paq j(a1mq *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 center of a square. When a second point,)rj.n9 *6 c qfekkymy 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 yj* mfre 6qcn).kk,y9'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 the centroid of an equilateral tr7pm3g-oval;lbv:o k) iangle. 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 toal 7:l3gbkv mov-)p;o a third charge of +Q placed at one of the other vertices?

  Which of the following is n)n2ix0fov p b-kgpha9 ,s;mhr4cu62rot a vector?

  At twice the distance from a point charge, the strength of the electriv mwj24+ ejrf.c field

  Is it possible to have a ze 3k 4sa*tzf32xecn qy4ro electric field value between a negative and positive charge alon33 *xkayt2 zfecq44ns g the line joining the two charges?

  Is it possible to have a zero electric field value between two huk;hiky )dwg87b n.6 fihtzo .9c68kpositive charges along the bthh89c i6 6uk)yih.d z ngkk7;f.ow 8line joining the two charges?

  Electric field lines near psitivec z/jyl .t+q+ gp4hm,i point charges

  The electric field s+v4 gzo,igh,, x9kjvg2/ dk vohown

  Can electric field lines inten-kqzzfz6u h :pr6 42orsect in free space?

  A solid block of metal in electrostatic equilibrium pb dhlu :r*ujoyz5,4+is placed in a uniform electric field. j+:dz4yl5 b u uhpor,* Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gi /s lr k4xh z/:z7xgi8kirb1g-ven the same charge, the electric field (E) midway between the center and the surface iklgi:s8k//z1xh7r -xri gzb4s

  A cubic block of aluminum rests on a wo 9t ccz+u 0m:,6kksfxwoden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top 9sztk:c uk6wm 0f,c+xsurface?

  If a conductor is in electrostatic equilibrium near an electric chargq+ a5+fsrm :bn3 wfd3qe

  A positive point charge is enclosed in a hollow metallic sphere that is (eir ;948hq g r1o+fipbnp- t 0vq3lq5zx7tntgrounded. As compared to the case without the hollow sphere, the electric field at a point directly above ti 7xto p0-et5n t in+p8rh(qf3q9gvlb14; rzqhe hollow sphere has

State three properties of conductors in static eg1yzn2c: 4znv)7wytz kp f 5t2quilibrium.

State Gauss's law.

  The charge carried by one ele5jj5-pkh4wq h 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. Hog8:c6bj+ub jqz*)nw7ybvgpki8 s*cy q+.k5 r w many more protons than electrons does this piece of plastic jjz+*:c7qb.8v up56+gk* )nkwq ygybsrc b8 ihave?

  What is the charge on 1 kg ofoa;tv d*je6 p)rq5om + protons?

  An atomic nucleus has a chja -/j*l pgxy3arge 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 o)l96qy 6(jyt 6 r e0rzouux/o2.0 and -4.0 mC, respectively.(/6x6ly6 yu0j9)ezq rooturo What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the m402hp2q; cisxbr xz/force between them is 1.0 N. What is the magnitude of /q042sz;hx rb xp2mic the second charge?

  Two 1.0-C charges have a force between t2k16 0-wacvjr dk w7ibhem of 1.0 N. How far apart are they?

  The force between a z/ve2x0b e.rg $30 \; mC$ 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 fobziezu*j e ) o3,h6/werce. If they are moved to a new separationz,zh i6 )jwe/oeb*u3e of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2jdf sldla4 7 d8tz3t -6(fdbl2.0 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 c2t-4bl6ddf73(lltfa dd 8 z sjharge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed atiqu +4r.h(v fl 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 cl+ v hqru(f4.iharge at the origin?

  Three point charges are located at the following positions: Qbfw +r9m6sqq/ 1 = 2.00 mC at x = 1.00 m;/w9 6rsmq+fq b 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 ofj,2j3 s +ja3; ksducuc 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 actu sd j2k;sau3,cjj3c+ s 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); Q3 = 5c9ym(h mb +)c8i:qtq p.0 nC is at (0, 0). What iic( +h9cqyt:mq)b m8 ps 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, 0.b6aq-s ybsr- 910 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0bssr96-by -qa nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an/36qdg3n z net equilateral triangle which measures 30 cm on a side. What is tn ez3qg6/td n3he 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 what poihe +g*yv* zlk82kv 0nea( qp*ynt, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic fy *zgk8 hyvvkne *pe 2+lq*0(aorce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =(v nhs5q ah76i/ uzhv8 4.0 m. Where on the x-axis can a third charge b8a6sh5uz7 hv(vn/i q he placed so the net force on it is zero?

  Charge +2q is placedmuvx gqmb,g/c5 st67h h2*tc1 at the origin and charge -q is placed at x = 2a. Where can a third p/q smm* cg1 v6t2x b57cu,thhgositive charge +q be placed so that the force on it is zero?

  A copper penny has a i8rnni7xs5xi 4)6 ng omass of 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 force of hbqp vp x7t,7vf1 :1ltgravity by the attraction of a fixed proton sqx,71pf v7hltb1 tv:pome distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by noncondujg bor-eu*9xi :h-q( 5e8j lo)mh1amncting threads which are 30 cm long. Both are given identical charges, and tg9oh*jnl8 -u5(qx:rmoe-majieb ) h1he electrostatic 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 thefsz dz )62*qdvowfo/ 4jn q1u6 electric field at a)ou46od fjfqvz s1dz2/qn 6w* distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the elecu idzc0m8zhq( /q.f 9ptric field at a distance of 1.50 m from a 50.0-qfi zd8/p.h0 czu9q (mnC charge?

  A 5.0-C charge is 10 m fro* /k.9l-pu cctl*rptom a small test charge. What is the magnitude of the electric 9otuktlc/rl -*.* ppc field at the location of the test charge?

  A 5.0-C charge is 10 m frw93m3 6;z0 fkpab5w lw4swci oom a small test charge. What is the direction of the electri4p39oaws;c6w0f lmbkww 5 3 zic field?

  A 5.0-C charge is 10 m from a small test chb4j goum5. ddkm4v)j s vwgc)4.4/xjqarge. What is the magnitude of the force experienced by a 1.0 nC charge pd m4o4bs)4.mjku)cv4vq/j gd x gj w5.laced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separate.tms-,dm bp5l d by a distance of 4.0 m. What is pmlmbts.5- d, the electric field at a point midway between the two charges?

  A 5.0-mC charge is p33dr bsusn6: f t.8:mlmj-daa8:rtmjlaced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elej:tsls3 nt 8 .m:rumfj mba-rda38: 6dctric field at the 30 cm mark?

  A 5.0-mC charge is placed 7m tfojm0 eyf6mh+ /o-at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the mo6 7o jy t-m0+/emfhf50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at xt 044 tq 6 qghqe5at,kezf.x0s = 0 and x = 0.20 m. What is the magnitude of the electric f6e .zgt4qtt, e0qx4sf 0akh5 qield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square o27vjzu:w 3 xmgqwqk l-:p 82ozf side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the celqq3p2jk 7oux-zwg :: v8 2mwznter of the square.

  Consider a square which is 1.0 m on a sidex utb93ur2zpt*tb;p 4 . Charges are placed at the corners of the squrt93;2 z xt*uub p4bptare 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 c+ko f:b yl95m oub6weq74yp7mC when it is placed in a uniform electric field. What is u:65ey7l obcq79oymbw k4 f +pthe magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass onqf5s bkf;k2) c-tef ;f $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120a lcmzjkz9 /0-q/t; mz g is placed in an electric field of 6000 N/C pointing downward. What c/q- 0m/kjz;m9zacz tl harge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge qymq6h99mqn 7zsq 7i+of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force o9+q7h6 mq s7 zyimn9qqf 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. hg*,jtg34qk zWhat is the magnitude of the electric fihq *4g kj3t,zgeld 5.0 cm from the sphere's surface?

  A metal sphere of rad eex r/2t;+lgjius 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the cent+;gejtl /r x2eer of the sphere?