State the law of conser w:6:0pnuvqjw vation of electric charge.

  Is it possible for two negative chaf5g-z8x .jx gqrges to attract each other?

  Is it possible for a positive and a ne:g4 +. h4sxbelg mvaybcxf+o1nq 6)r6rq4 k1egative charge to attract each other?

  A glass rod is rubbed with a piece oegq;8u.)vyw tc+tq4;u6 kp hnf silk. During the process the glass rod acqu pn;)cq8tvq ut gu+ek;w4 .6yhires a positive charge and the silk

  A proton carries a

  The model of the atom s1dqrpxho8o8:v d9l , qhows a

  A neutral atom always h79q6 zpdg ec20e0srpras

  An atom has more electrons than proa )uhfn9 bkc98tons. The atom is

  Materials in which the electrons 1w :q9u xluhg9/8dmeg are bound very tightly to the nuclei are referred to l8xq 19h/u:dwuemg 9g as

  Materials in which the electrons arx 3zm4)*2zgl :xuu1eu lqwe4 ge bound very loosely to the nuclei and can move about freely wit2ql uwg:uu1z el* ex4)x3mzg4hin the material are referred to as

  A negatively charged rod is brought near one en 3f6)zm(vpt1 n +l3j7ppv qt9/3k mmaysygss6d of an uncharged metal bar. The end oq 7gzjs)m1 33mp v3pntyl9f/p+ (6a skymv ts6f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. Theyspu6s(zd+x 3(b*w ty i are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which s*+yp z (sst6(dbwxi u3tatement is correct?

  How can a negatively charged rod charge an electroscope nic pd*(0n9x.z( odxgpositively?

  An originally neutral electroscope is briefly touched wittn yib55z i/h9h a positively charged glass roi9hy5z ni5b/td. The electroscope

  An originally neutral electroscope is grounded briefly f/nnw xw7e2g jmv8 ;(bwhile a positively charged glass rod iswf ng 7v(n2m/bwxje;8 held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the ltplv d/dxpd4pg63 n72 eaves separate. Then a negative objd/d xdp74v26 nt3ppgl ect is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A np ; /b0txddw-2qg8xjmeutral 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 djptqx 2gxw /m- b8d0;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 Cqlea3i-jj 3* zoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. z2g0nhtrs.o ,The first charge is larger in magnitude than the secoog z02nt.,sr hnd charge.

  Sphere A carries a net charge and sphere p tc+s 1g-7rkt9s/uojB is neutral. They are placed near each other on an insulated table. Which s7tt+ ckjs sr1o p-/gu9tatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chargek nv4s789 04x sigwew7 x)xfads on both objects are doubled with no change in separation, the fo9 vxnk w4egs7 fsaiw7d0x) 84xrce between them

  Two charges are separated by a distance d and exert mutual a2am72 q fjesy8ttractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual fmeys2q 287ja forces?

  Two charged objects attract each ot -i72k,iz qxfzher with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation diszzkq f -7i2,xitance 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 distw ) 3v3e.j/bg3ywhwfl3oq4 4)zcsvdx ance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron ibw4l)3c4qoy33s3hv/ e wg wvd .fz xj)s placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 mqsid57eqcl h-+yf /p2qnls 6 /. What happens to the magnitude of the force on the f7dleq / sy/- qhilp2+fnq65 csirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distane. 58s.d - znvbtaq,gnce of 1.0 m. What happens to the size of the force on the proton ifed,q.n5bz .g tas nv8- 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 sec3hiqc61eg( lyn;9d phond 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 squarhy3i qd;6p(1 lh 9gecne. 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 tr;vs *zlkiw)m ybx -0 t13)zkzliangle. 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 c;z0kkzbws3 *v)zl -i x)1mytlharge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vecg d hu 859s/j(gishov1tor?

  At twice the distance from a po7goy0:; b ko 9 xdx8i2j1y 5jzud5srgjint charge, the strength of the electric field

  Is it possible to have a zero electri;pqm ht4lm:pyz54 9sp t kq9lqp4 l(0uc field value between a negative and positive charge along the :ltylltsp45q z4pkph9u( ; 4 9pmmqq0line joining the two charges?

  Is it possible to have a zero electric field value between d0:5t okw i5r p8zpox5two positive charges along the line joining the two ckitp px5o0dw:zro 855harges?

  Electric field lines near psitive point chargevymewbr+ m)e/ev.ndq44wr 9 3s

  The electric field shown0)vnq -gitr)lcicp4xj6.fmf- lk: :4notik+

  Can electric field lines interz:/r)cjp3i d 18.peyf vt9to rsect in free space?

  A solid block of metal in electrostatic equilibriumtg a*o/5nre3oed 0f xk0h8y2k is placed in a uniform electric field. Give g0 ho kn 2ek/rdo*80 ayfxt53ea statement concerning the electric field in the block's interior.

  If a solid metal sphere and a h)chr* a5..d6 kz5nb oj9zgedzollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the kj a5z*d9d5.h rbgo.)ce nz 6zsurface is

  A cubic block of aluminum rests on a wooden table in a region where a uniformw ,o jmj,c+8wt electric field is directed straight upward. What can be said concerning the charge on the bloc, m8wc+j ,towjk's top surface?

  If a conductor is in elec lh5+gq .rq11 rqr/wxj.fis5rtrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grouzq uthy ),z3m;cyx y:0nded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow spq;ymzu3 c:)0y h xyzt,here has

State three properties of conductors in sta8)p tqxm 9f+ 8:-os4rqhhmzzb tic equilibrium.

State Gauss's law.

  The charge carried by one electro ;j3di)-x nzz64jr 6k*sa obein 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 many more protons l2z*i rs: y/aethan electrons does this piece of plasti/y ls: 2arze*ic have?

  What is the charge on 1 kg of protoc4t pih *;t7xlns?

  An atomic nucleus has a charge 8yca .i)9nh *vryge *lof $+40e$. 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 mC,9yxdl-rs,d1 c a6*sarl(l q;x respectively. What is the magnitude of the electric fox-dr ;rds(ax*y cqlas6l1l9, rce between them?

  A 1.0-C charge is 15 m from a seco29/ joiyrzg.ei9m5b hnd charge, and the force between them is 1.0 N. Whatoi/ re2bmzy5 hi.99jg is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apag gdzg-. m/1p-oem- ajrt are they?

  The force between a l69wzp*j elvha . q(5z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyo bg2b 5 .iuwuh2y;q3*8l rmpr 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the e8qu;op .522*h ril3mybbwu rglectric force between them?

  Three identical point charges of 2.0 mC are pl , -fnh9cn)ro hryj-s4f/9xl vaced 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 acrvf 94 l)s-fnjhho/n xc r-,y9ts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed ae gq fpaapmk vc/1(.-.t the origin, -2.0 m C to the right at x = 50 cm, acfq.a-/pg.me1(k pva nd +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 following positioneq6ofhtx v x5m;28t-js: 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. oh2x6t8 je5tvfmq-;x 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 v :ewfyje .-80jmt:tkcharge 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 acts on the center charge if a third charge of -Q is placed at the lower-left cyf.vem ewjt j -:0:t8korner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0ml;c1h(nw3f:s8ggcf dbm dre,zp(9 0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge3s(r;b9(czg1 mne,dfcf w:0 gp8 lmdh ?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.100lz ts-:v;fmx m); Q3 = 5.0 nC is at (0, 0). What l;v0mt z xs:f-is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of anrzh9apet1,(+atf(z + sarao / equilateral triangle which measures 30 cm on ae/9zth r+(p+raftz 1a,(os aa 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 s,q ccdm9ie. hp rw kgzx.)6h9,eparated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge or9,cpe.m qd h6) .gzi,ckwxh9 f -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x =kir60g ox ;xz- 4.0 m. Where on the x-axis can a third chaox6r0k-gix ;zrge 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. Whe step9zzbe m 76,(g3gire can a third positive charge +q be placed so that tebz(iegg z7,m63s9p t he force on it is zero?

  A copper penny has a mass of 3.0 g. A towluty3 3 s(;dt6fuaa h2 6oois8)esb4tal 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 grav:j j65h;)c nr j/fjkvt(ue6gk*u*jz(j a7u hcity by the attraction of a fixedh6/f;(cu*ur7j)* tzj5:n jkjajevj (c h ku6g proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hu 3:e,25ap.nwtlpki bang from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces 2b i3 lap.:tk5,apen wthem 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 i7jaunq . 9sc0+40e. What is the magnitude of the electric field at a distance of 1.0 m from the nuasn jic qu.097cleus?

  What are the magnitude and direction of the electqu .97d-sg)(zazw 4f6 (tu- h aoulmqrric field at a distance of 1.50 m from a 50.0-nC ht-(sw67md-fqauurz .zq49 go l au()charge?

  A 5.0-C charge is 10 m from a small test /0lx)sjhla(o 4o s im.charge. What is the magnitude of the electric field at the lol)4omi hj0. ol(s/xas cation of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dire khm(mur jcy1kd;jqqu 7sf d5x;,.6m7ction of the electric field?;7;5 umj f u7skrmjmx6ch.kq d (qd,y1

  A 5.0-C charge is 10 m from a small test charge. Whfm3 7nvfnq n9+at is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tes+nfv nn9f 7q3mt charge?

  Two point charges each have a value of 3.0 C and are separated by a distance ofn ;dmroox)jyku( l*6. 4.0 m. What is theul) ;dnj(*oxoym 6.r k electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter zhvitgd(/d, r0k1mwj;, za v- gr*p*cstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at p0d*k ar;z- jcw v*h1g,,g vrmdi/tz(the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metunozf ,s-p)hmh1c (2j er stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field1m(jhcso uf2- h nz,)p zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0dn50l),5v0zx wqw dx s and x = 0.20 m. What is the magnitude of the electric field at the point midway between dx 5, qsxlw)00v dwzn5them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m.fj)omf( musgb *0/i 42 r7m0wk erv )mosyn4m) The last corner is occupied by a -3.0 v/2 m rks w)ou*mfmmj(4sgm4efo00y bn)7r) i mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on hwj4+ (y; vb do3pqtaaz6jh,-a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC a;zo ,b+ jq6 d34ht-yphjwava(t (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 it is placed in a unifov+0ze *pa w5msrm electrics+0 wpmvzea *5 field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of *0h9c21c8 lseorr wcz$5.0 \times 10^{-3} \; kg$. 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 electrr j;7 -b*nokyxz:edj96hng e,ic field of 6000 N/C pointing downward. Whzrgne76n: d*h ;yo-,kej9b j xat charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chbp4y g(gb ))hh,x4zu6 n4 lyaxarge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. Whagzhnxu6x 4)pay4b( ),hby4lgt are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carr: rby9wqx6)bbies a charge of +2.0 mC. What is the magnitude of the electri xqbbb9rw):y 6c field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carrie w,yk8:jm o;aks a charge of 3.0 mC. What is the electric field 6.0 cm from the center;m:j,kok ay8w of the sphere?