State the law of conserva*kmn m0*w2gd ytion of electric charge.

  Is it possible for two negative charges to attract each r+o13ia86vq ea nyt0pxc3 kt2other?

  Is it possible for a positive and a negative charge to attract each othernvo3 q( ega+ce1o/ 9rk?

  A glass rod is rubbed wit lx(8r-l o/wkih a piece of silk. During the process the glass rod acquires a posit okr-l xw(/8liive charge and the silk

  A proton carries a

  The model of the atom shows 3k hn6dqp7/hy a

  A neutral atom always ha 70w0u p+adnxhs

  An atom has more elecy; 9uy7 gsxs4bdo9 u.3du9c mytrons than protons. The atom is

  Materials in which the electrons are bound very tightl mofhs. /vn14ly to the nuclei are referred to as/v41.l fmh osn

  Materials in which the elect*6slwo nvh0pcd1 .3vkl ;yd; mrons are bound very loosely to the nuclei and can move about freely within the material are rehmp3vvs o *lyk1.0 ;dw6c;dnlferred to as

  A negatively charged rod is brought nea 54a49ruuxm mbr one end of an uncharged metal bar. The end of themburx4au5 94 m metal bar farthest from the charged rod will be charged

  Sphere A carries a net po9fj)rz- oijxpn sz 1(gs ,bg85sitive charge, and sphere B is neutral. They are placed near each other on an insulj -goi1g fs zpbxs(9j,n)r8z5ated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod che( q0fi1a7 ipaarge an electroscope positively?

  An originally neutral electroscope is briefly touch y)nh1 b8 s bh:k+ tjp1);,uq en9pr3f/feovrzed with a positively charged :;e9huvh8spkbtjny q rb r/ +,fo1)ne1p3 f)zglass rod. The electroscope

  An originally neutral electroscope is grounded briefly wh*. pv59 p6rkgnr5qik xile a positively charged glass rod is held near it. After the glass rod is removed, the el5 5qr pkgxp n69v.r*ikectroscope

  A positive object touches a neutral electroscope, and the leaves separate. T md:jxa *k 5p2-n euvn 4is-i.+.ekpnghen a negative object is brought near the electroscope, but does not touch it. What happens x-ks2e.pg p iei+.v: 5j knan4un*md- to the leaves?

  A large negatively charged object is placed on an insulat s5gfeb +.k9zged 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 5+b se 9gzkgf.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 ther m5k/ce9 /wr wmz-hwt wt-fxw6fm nu7es;:,8 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fm(( cor+( mppyirst charge is larger in mp(pmmy( or( c+agnitude than the second charge.

  Sphere A carries a net charge and spherc,idij:)1r t/e8l 8nrbe. nx be B is neutral. They are placed near each other on an insulated table. Which statement best dee,:c/bj ne.)t88 lnib r1ridxscribes the electrostatic force between them?

  Two charged objects attract each:/4e jau3ejbz other with a certain force. If the charges on both objects are doubled with no change in separation, the force betwe3 z :4j/eabejuen them

  Two charges are separated by a distance d and exert mutual attractive forces ofsg2:oyi6-w/ 2hvx 0hyrz4im f F on each other. If the charges are separated by a distance of d/3, wi o:-rhsy2vfgi04mx yz2 /w h6hat are the new mutual forces?

  Two charged objects attract egs++ 5ryx kxhpy2)t8i ach other with a force F. What happens to the force between them if one charge is doubled, the otsp+ g+x5h 2y) rx8iykther 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 separated by a distance of 1.0 m.s- g aej6,m6xm What happens to the magnitude of the force on the proa6, exm-6gsjm ton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a disn0pp+9nel 7abdg ,.jc tance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electrongl9 ,.pdj +e7ncan bp0 is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens:oi;jtyd j za0eg 0,7uwqk3)a to the sqg:kie)0j d0o;z taw,3u7ay jize 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 squarc;lp1(efr+ er:s3qw.2bc wlxq - a0qfe. 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 magnitude of the net e1ef0b frl3c.r+(eqc 2 qqws-;pawl:x lectrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid o)*d ge+sndb( e;ou 6h;hulhd8 f 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 other vertigod)l8(nebu 6ehd;udhsh * ; +ces?

  Which of the following is nokhgpc z* 8-m.bgcm.-xt a vector?

  At twice the distance from a point charge, the strength of thd4bo7rai*f.pe.n1f nh- jl w2e electric field

  Is it possible to have a zero electric field value between a ivs)eiv 9q*6b negative and positive charge aliv9)6bq i*vs eong the line joining the two charges?

  Is it possible to have a zero elecxwv hqygy g2 qie6.(bh.0o/6k tric field value between two positive charges along the line joininv6 /0iox(bqy.hgyw2g6e.hq kg the two charges?

  Electric field lines near psitive point chwd, z5 dkae0aof+j-) dft +iw3arges

  The electric field sho4ueg 01ck eb4q1jpja, wn

  Can electric field lines intersect in freeg0t3.rcmd/ zg b83- 1pxl ibqg space?

  A solid block of metal in electrostatic equilibrium is placed i 5pu yv446elb9 chpo1qn a uniform electric field. Give a statement concerning the p4ovuq9p y e1b4ch 65lelectric field in the block's interior.

  If a solid metal sphere ai, zc1v+yhpz7h umq ylf:- 37jnd a hollow metal sphere of equal diameters are each given the same chz7vm :u plc-j,qyh 37+ fz1yiharge, 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 a uniform e4uds yt- f93usx f)ef;lectric field is directed straight upward. What ;-f u )s uxse49ydfft3can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electrirx-0 v)vw8of wc charge

  A positive point charge is en,8ykz+ mu gqwr mmw *z-up2e5(closed 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 hollow sphergmr wuwz,mu8 (5*2ypqez-km+ e has

State three properties of conductors i u;bgikq; pu72n static equilibrium.

State Gauss's law.

  The charge carried by one electm9aqon6 g+a /li (t9kdron 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 chargeu.o0ww 5ymacx z eden4i.e.c- hp )k37 of +2.00 mC. How many more protons than electrons does txa. .ku4zynw .7 5od0mechp)3ei c-e whis piece of plastic have?

  What is the charge on 1 wj5sp/ h9jyjo58 fml7kg of protons?

  An atomic nucleus has a chax/s pi1 qfam,l4 4q;9b*g tfovrge 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 c* 1e jvpc w+jcth7yq)0harge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betw7w)h0*jyqc e+v cpt 1jeen them?

  A 1.0-C charge is 15 m from a second charge, and the force between thds9 q0-y4 aahcnk:y; vem is 1.0 N. What is the c9vy yqns ;4-0kad ha:magnitude of the second charge?

  Two 1.0-C charges have a fw :hu4sr1e :+m bt/bsu)d:bdg orce between them of 1.0 N. How far apart are they?

  The force between a q eovx3v.8-x7zot7py $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 z35bx3xwju.pal ym7 9oj(ua7 cm apart, experience a 1.0-N force. If they are moved to a new s7aaj.ju 9bupm5l7w (xzx3 3oyeparation 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. n ),88 . yvcvu04hobehmt +mli The first charge is at the origin, the second t0+)e m8ctu,h8 .imbvnlh4yo vo 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 bf-/z +.cr3txhue7 c; b/ t-jlfiald9the x-axis. A charge of +2.0 mC is placed at the origin,;7htd fu-j/xa+/zreb flcl.ib- 9tc3 -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 the origin?

  Three point charges are located at the followinga9t;ab0f ye 9e (e19lslel8lv positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of tlaa08 9lyeeelt 9fb91;vs(e lhe force on the 3.00-mC charge?

  A point charge of +Q is placed at t-i; ghn aum ufu-l5;a5mu 5x*0dop+1o0aoi o vhe center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observed thatx1m * -f a+ ionamou5oilvupga 50;du;o-5hu0 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); Q3 )ixmv *t nb1ht/c 6e4(dbjq;g= 5.0 nC is at (0, 0). Wh6;m)gn (1 vid h*/bjtexcqb4tat is 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 n weged9m9+ eibnm 9i;9C is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5dwe9i b ;mnei99eg9+m .0 nC charge?

  Three identical charges ofjkfbr; g-5u h( /uryk8 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the ma(k - bgrhfuj8uky/5r; gnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separf ibh.p(ejt5apr *y;,2 vvcb6:of 6e kated by 3.0 m. At what point, on a line between the two charges, woe to v6i(fpr6ej,bf*. : y2vbck ah;p5uld 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 +9.6f mgi1(n js1s0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so th6 gni (fss1j1me net force on it is zero?

  Charge +2q is placed at the origin and (9:rvfw ar4wecharge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on it is zeroafre( :4vwwr 9?

  A copper penny has a mass of 3.0 g. np 53:g54f dzb -kq:on5cypdoA 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 gravi2 t0t8l ms)nxubejiq 6m0qq 9w0 w j-:1ys3meety by the attraction of a fixed proton some distance above it. How far above the electron is the proton?e-qm m)0 ws6u1txsy9q wnee0j j:38im0bl2q t

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadh3 xch 2ymi7*xs which are 30 cm long. Both are given identical charges, and the elim cyh xxh*237ectrostatic 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 w 2f*d(u;xrbgf 1d82baql bvye3h.3r is the magnitude of the electric field at a yqrbdhd1;frw2 2 .ufl33bxb(egva 8 * distance of 1.0 m from the nucleus?

  What are the magnitude and direction ods ya9- ti, fg7oi0v4-gwcrd+f the electric field at a distance of 1.50 m from a 50.0-nC cf yw4,id- c ors-+a07 dg9givtharge?

  A 5.0-C charge is 10 m from a small test charge. What isvkqg 7u h79vq8ar26 me the magnitude of the electric field at the location of vu7qh7kgqrv a9m8 e62the test charge?

  A 5.0-C charge is 10 m from a small test64y qsvcr dr/p9j bf72 charge. What is the direction of the electric f j2/dp v97qs6y 4rfrcbield?

  A 5.0-C charge is 10 m from a small test charge. Wha9h9 3(ajz xl foykn/b(t is the magnitude of the force experienced by a 1.0 nC charge placed at the locat 9( yhakzf 3x(j9/nbolion of the test charge?

  Two point charges each have a value of 3.0 C and ar o.3j *,ohiwvi js.-2 cyns*fp1kzc(xe separated by a distance of 4.0 m. What*i* .z 3 ,i2j-s1 jc.c(hponvoxkfswy is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at ,jylac 706qe3il )sykthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm markec0k3l jiays7 6,qly) ?

  A 5.0-mC charge is pla2xosn4:f2l0ged i /iv ced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joiningnse2gi xd 4v2 /0ofli: the two charges is 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.86rl+or5zdp m*.yq xt What is the magnitude of the electric frp6 xloz8r *+qd5myt.ield at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 )ah0akj4g0)le/edy*eo 2k 3v rr5r yom. The last corner is occupied by a -3.0 mC charge. r/4v )k25eegaejl0 yyko*0 )d rrao3hFind 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 corners os /1kou,6xezr6e8lrof the square as follows: +4.0 mC at (0, 0); x/ok6roz6el 8,usr1e +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 itezverb8 bk, * y/qk4;v is placed in a uniform electric fikb*ye;84eq v kv ,/zbreld. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has vzqfmpvd6x:w b-/8qfw 6j 8z1 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 0.12*jw,o fu (wp-h0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suspepjf h*,(u-o wwnded?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ,f ,wfi r37pvryaj,8 fy)7we lball is placed inside a uniform electric field, and is suspenjle7vr,i)y pfww3 8,fary7,fded against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cao np x;(e1ppd3rries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fr pne 1p;x3pdo(om the sphere's surface?

  A metal sphere of radius 2.0 cg,,aa.+yrm, mbr *pcxm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of r,y, mapa.cx+*r,gbmthe sphere?