State the law of conservatiolj5i2a:pe 8culc t;:i n of electric charge.

  Is it possible for two negati48dtj1jj t xmat,o), eve charges to attract each other?

  Is it possible for a positive and a negative charge to attract each otpw8mt se9d,y4 ejhg7 :tb5 m7)zg,f zuher?

  A glass rod is rubbed with a piece of silk. During the process the glass rod ach j;)gf7g(moy+3yfqu(.kvwbuq v 35c quif;7wyuqogyv( )b qgv3hk+3f5 c.u(jm res a positive charge and the silk

  A proton carries a

  The model of the atod(ttxg09 /ahpjxju, ;m shows a

  A neutral atom always h2p)gvn;1mhh o as

  An atom has more electrons it56 3v. wdxz) rbe)flthan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclrjfmx/cgmwiej+9n( +w/+h8 znmeg; 0ei are referred to as/8 xgwe j zi+;grf em0+m+jncmnw 9(/h

  Materials in which th..x9kg2f 1 /v ls1zxmwa6l 3toz 9vpl( uff;eme electrons are bound very loosely to the nuclei and can move about freu/ vt.zl (3la 26sogkm.xxvzml1w ;9pfe19ffely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metarvae dk;jai f eq(9-i g)h2x.u11y1pxl bar. The end of the metal bar farthest froh jxr.9eav; q pgue fki1y)-(1 x1a2dim the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are plac4qv2s q:o 73eu+ ksthcm 7imx6ed near each other onthmue4qmx7s6:o+v7ic 3kq 2s an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eleczx1,ldtp/04 a;ek yt etroscope positively?

  An originally neutral electrosqara-.u- vqw 4cope is briefly touched with a positively charged glass rod- wu-qqvar4. a. The electroscope

  An originally neutral electrosco5 ev8dq,o;okd7x (c m5uo+uvzlk:bn5/k (dcgpe is grounded briefly while a positively charged glas vo u+,u5:ckd ;bno/dk7zl g 5qd5(k omc8x(ves rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope,cq2z70b/w ebb q.ne*o and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens tqbzw/e b* 027e. cbnqoo the leaves?

  A large negatively charged object is placed on an insulateh4a tc(wv1d+z d table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along(1adz ctv+hw4 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 thezsqy:w5qd,9xf w d)y3 Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger in +i.*gdmbz+e.kus x(8(r mwjn magnitude than the second chargremk (id8.m+x bj+w.n (zsu* ge.

  Sphere A carries a net charge anze can3n e54.xd sphere B is neutral. They are placed near each other on an insulated table. Which statement b.n exnza 4e35cest describes the electrostatic force between them?

  Two charged objects attract each oo w-g4 u(ek*q5) gosnbther with a certain force. If the charges on both objects are doubled with no chann*o5u(g eq)g-wbs 4ok ge in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractbx.j4k+x 3l+pi*yawj ive forces of F on each other. If the charges are separated by a distan* wjx+4+. pyalbkxj3ice of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tb0ul 6np4x augydj9k:sq :l.9)d: ooyhe force between them if one charge is doj.ux 6al9 oq:9bokynuyd : sd)gpl 40:ubled, 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 separated by a distance of 1.0 m. What happens to ): h4zryzw cu,78mw ctthe magnitude of the force on the proton if a second electron is placed next to the first electrtwz wh7)c r: uc84m,yzon?

  An electron and a proton are separated by a distancewtv1j cueujn:2x4u;2 of 1.0 m. What happens to the magnitude of the force on the first elecxuej:vuj ;uw c1 2nt42tron if a second electron is placed next to the proton?

  An electron and a prov5d 17 u eo1q2fnoh/nqton are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer hde 21fn7ouq v /n1qo5to the proton?

  A point charge of +Q is placed at the center )v1(xx l 1uamndy1)k( /j)g6zwebukrof 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 (l1erk) )j1dy bzgxnm u1/ka uxw)v6( 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 placlu+qo8p b q;-wt a8d(ged 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 pugl +ot8 ;ba d-(q8wqacts 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 followi9i3nf c;jb, d syvxj**;ccmr0ng is not a vector?

  At twice the distance from a point 4e 2gce)-rum ocharge, the strength of the electric field

  Is it possible to have a zero electric fiet 4tcrgih/. d. cy6(mzld value between a negative and positive charge along the line joining the two charges?/6gh4.m ttc(r.zid y c

  Is it possible to have a zero electric fielz6iw ul;d4p7y+e7 v og-.gigzd value between two positive charges along the line joini+7g zevdg.woz7 y4-i6g;li pu ng the two charges?

  Electric field lines nearg3vym-/bg 2,k+diiis0di 2yiiuax u+e +4 mg1 psitive point charges

  The electric field showc-k aw:mvp/d* n

  Can electric field lines intersect in free spaczk(nldltj);- wzg .t4e?

  A solid block of metarg,wq.r;ue,xl a0u:ul in electrostatic equilibrium is placed in a uniform electric field. Give a statement co0u.rrwxuq,e;g :a,u lncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq5oyc /qihq*poebh t1 tq/- z87ual diameters are each given the same charge, the electrqot5qz/e-1cot i 7*q8/yhhp bic 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 unim;m.z a/6 t wgvkc.3flform electric field is directed straight upward. What can be said concerning the charge on the block'sw;g k.zf mav6 lc3t/m. top surface?

  If a conductor is in electrostatic equilibrium nearjw wy ;lhvxcm)8z+h;, an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is ea mq*qhaq tz*c3; ;m5grounded. As compared to the case without the hollow sphere, the electric f ; zqh*qa*m5qemct;a3ield at a point directly above the hollow sphere has

State three properties of conductors in static equ9swxbya4t :i/ted r )5ilibrium.

State Gauss's law.

  The charge carried by one eleczdsb m0.- fprz3y w 7o/z5n3uatron 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. Howluzr;rx xze13d55la79j bcn, many more protons than electrons does this piece of p l1 5cxna35e7z, zx9urld j;brlastic have?

  What is the charge on 1 kg of(*monx19 v ao-1vp6k xpzm3i7- xfvcf protons?

  An atomic nucleus has a charge o;q: k6bt/k ew(fxhr) 3m2pdmjf $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by alh,1lryhx22 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force 2 rl1ahx yhl2,between them?

  A 1.0-C charge is 15 m fromo 4n k2 kfpz87mj8d.fwe6i5eg a second charge, and the force between them is 1.0 Nk g42iko68fez 58e.d wp mn7fj. What is the magnitude of the second charge?

  Two 1.0-C charges have a :swio8,1o2t o 2q oy,v8fl jubforce between them of 1.0 N. How far apart are they?

  The force between a *axcl sxvyrouj zwg h)(p*-+,-of,u 5$30 \; mC$ 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 1.0-8k )/lrza)d3 xn .otgtN force. If they are moved to a new separation of 8.0 cm, what is the electric force between themnk3x )t)r8tda./l g zo?

  Three identical point charges of 2.0 mC are placed odz +messydwo.zx*p5ggr iz 79og ,+5/n the x-axis. The first charge is at the ori7eop sw55myi,+/ gs.dgo*9 rx+dz gzzgin, 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 of +2.0 mC is plac2udky 8aanw3mw6 gj40ed 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 the83a j2g0kn 4auwwy md6 origin?

  Three point charges are located at the following positl6o0:fatdl 1 rm.q(bbions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3mtra0lf 1. bdbl(6qo:.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 pla z.cislm3x7 ekn:4; fj0 t1xhjced at the center of a square, and a second point charge of -Q is placed at the upp xztmkn:0.l h 1 f4e3si7jjx;cer-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 zn1itlbc3wqbx v) (4ie8bj-*= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is -bnjbi8z xlq*3wct 1v)i b(4ethe magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,y /ij3:3g8x ;ejd9ubyvbj 3lc 0); 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 oyd3j: ie/lgj9 3cxu;b38jbv yn the 5.0 nC charge?

  Three identical charges of 3.0 mC are platwz hl5 +w-gr1ced at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts onr5 w tgwh1z-l+ any one of the charges?

  Consider point charges of +Q and +4Q, whichnm1:xjopv o8+ are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such th 8 ojnx:pom+1vat the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin 3 z7elma+vb k;and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charb v l3a;zk7em+ge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where canf3 y k0tt b9lf2cs/1cw a third12yfs/l 0t cckbt93fw positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totaz:j wxw rk.l38l 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 attractiont 5n(naomf)i) of a fixed proton some dis)n5mta(i)o fntance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres amukhm/e :w 1l*re hung from a common point by nonconducting threads whilwme/*h :m1 kuch are 30 cm long. Both are given identical charges, and the 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 mags)j7y4f wnr9 znitude of the electric field frsny4)z79j wat a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field aty s gj/vnn3ac8)uh+fa6 ;b ;ao a distance of 1.50 m from a 5vaa6 gc uy3f+n;s );bj8/ohan 0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thvt1 ojv*1vu 8ce electricvj 81 u*tvvo1c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct pl* m0.ivafa9ion of the electric fielivf p mala*90.d?

  A 5.0-C charge is 10 m from a small test charge. What is vdy1jn x6;d/h pt:rae 6wj2q 4the magnitude of the forcevdt4qrx pan:/y1hed62 j;wj6 experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value ofw:+w7+ls svzi)kl6 jk 3.0 C and are separated by a distance of 4.0 m. What is the electricsvl+lk zk6+i7)s:w jw field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a metej5ma3alugb*1 4w c5p3xman.7w uhju- r stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm ma3 u1xa4 uw*jwg5a 3hcm. mnpjla7b5u-rk?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick andppje :fbj*)2h a -4.0 mC charge is placed at the 50 cm mark. At what point on 2jp:)hejf*b p a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and x lu.vlj wa..,-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the poilv..wa,ux.jl nt midway between them?

  Three 3.0 mC charges are at the three corners of a squarefz9;s .v2 +ikti8 jo5m5rr/v; palzb i of side 0.50 m. The last corner is ocz8.z9ipt;b2avk;sm r/ f 5l o vir5i+jcupied 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 placedym1 z rbgeuq7*5 yy5c( at the corners 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 magnitude of the elrg5q*(uycz by 1e5m 7yectric 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 uniform ele sx0ftzyj8rk9se1lw,qp (w2 e-o8o 0gctric field. What is the magnitude of this electric fie k q001yg 28(wflr 9sz,w-ejsoo xpt8eld?

  A particle with a charge of 4.0 8y wl7fk :b7 : jjic kah;27k9epdx9kkmC 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 placed in 7ic4k5*o2nuipv- a 6nw uuv 9aan electric field of 6000 N/C pointing downward. What charge must be place ia95 n-4ncowi2uuva7u v*p 6kd on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a be /d.hayabo7w /1y)ocharge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against thehboy/.7 ay ) oab1d/we force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a /z aa+t3rv;osh,gi k7charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fra37hkr/ioagzs; +t,v om the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whaa8lc u+gcv8bh b 9z knev-m+) /44reqrt is the electric field 6.0 cm from the ceee4rk8b8- vbhn4)rm/vl z+ccg q+ua9 nter of the sphere?