State the law of conservat kpsn ve-as.r +fbar(p3o3z9/ 3fb-4i( mzmliion of electric charge.

  Is it possible for two negative charges to attrabnhr,k.y1pv i05 q3y6r 9nssl,b. r uvct each other?

  Is it possible for a positive and a negative charge to attra.:;hnjsy 5amqbo*bq/ xh/8 crct each other?

  A glass rod is rubbed with a piece of silk. Durd/)etb 7bw:li s/y, uzing the process the glass rod acquires a positive charge andbe :/,tl s du/z)i7byw the silk

  A proton carries a

  The model of the atom sho;hd5-u; s: ld+c 4yzemeti,dr1zcu e 9ws a

  A neutral atom alwaysj9iyw8 s-r.gz5ynz o : has

  An atom has more electrons *jqlksm*bn; n. j58xythan protons. The atom is

  Materials in which the electrons are bound very tightly to the vml4sr)r k()w nuclei are referred to asrr ks)v)wml4 (

  Materials in which the electrons are bound very loosely to the nuclei and o,r e5re5 x)gima )h(gcan move about freely within the,egoe)x)rr m i (hg5a5 material are referred to as

  A negatively charged rod is brought near one en m7eo/hu9gn9h d of an uncharged metal bar. The en99 umohge7nh /d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is nemd fz-lr*tcp);.0 aqautral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire dz0ar-; a*cfmq )l.t pthat is grounded. Which statement is correct?

  How can a negatively chargedg o ;y*z.oee*u rod charge an electroscope positively?

  An originally neutral electroscope is jrmgn er+ss32p850io briefly touched with a positively charged 3po s5 +smj2r0ireng8glass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a:undjv8: af )7 cip:sm:-fe -xks7lry positively charged glass rod is held near it. After the glass rod is removed, thevra8px 7ln sfj ieuycd)7f::s- k:-m: electroscope

  A positive object touches a neutral electroscope, and thex)c ieec6 87unqtb/,h a6xxj3 leaves separate. Then a negative object is brought near the electroscope, but does not touch it./x)7e8bxceic jau 3qxh t,66n What happens to the leaves?

  A large negatively charged object is placed on an insulated tableg,pms 1obm -4-9chcsr(m g n:c. 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 does not touch the negative object. At no time does either ball touch the negative object. What is the final charge on each ballcs :9ob1h(-,4m -r mcspggcnm?

  Charge is

  What are the units of the Coulomb constandj t0hn9u-2 vvt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerz(hw sc9vts*7zq x20s in ma 9stxshz0s(v cwz7q 2*gnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutr:sml,q8 )sgf 406r av6hwl ueeal. They are placed near each other on an insulated table. Which statement best des8vqar0f6: lsg,ehs6)w m4 ule cribes the electrostatic force between them?

  Two charged objects atw- 6, 0o;ne43c16bkvem mjzi qbqn sa-tract each other with a certain force. If the charges on both objects are doubled with no change in separatio;a,-ico nb b31ejvq40mw -sez6k nq6mn, the force between them

  Two charges are separated by a ng )w **- p bf.fhbnio(wk2:scdistance d and exert mutual attractive forces of F on each other. If the charges are separated by a distanc.)f*p *hwf:ni s n(2wobg-kc be of d/3, what are the new mutual forces?

  Two charged objects attract eae.5;n2crn2yzkb) jw rsq3) pjch other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled3k 2 b nrw;j2ecrpz njsy)).q5, 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. dut bxmd6cknhp f4* l;)o59 n6bgk.s0What happens to the magnitude of the force on the proton if a second electron imku; hd0ks*g.6fb c9x64 d nt po5l)bns placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What f6 c/d5el/) .glbez, gcy b9j40okzyjhappens to the magnitude of the force on the first electron if a second electro6/dg.yk 5 0e z4)beglfjc/lbyo cz,9jn is placed next to the proton?

  An electron and a proton are separated by a distance of (sqi etl36u 07;wn(t,uoh w2 xiddm. u1.0 m. What happens to the size of the force on the proton if the electron is moved 0.5,(m.di uiwl 06hud37(xuts qteown;2 0 m closer to the proton?

  A point charge of +Q is placwhi)q1. d fxva3 tf6p(ed at the center 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 h id3v t wapxff(q1.6)-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 cent0/rhssc o1 d8o(gs.varoid 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 acts on it. What is the magnitude of the force that acts on the centoas d g0/(s8r.cos h1ver charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a u-i 5hhf+4cms* a-wct vector?

  At twice the distance frome :7nsh l.kbv; a point charge, the strength of the electric field

  Is it possible to have a zero electric field value s 2ko1sg48auc:p 2wmea/ oyk2between a negative and positive charge along the line joining g2 syw:os1ma242ac pu/ko ek8the two charges?

  Is it possible to have a zero electric field value between two positive chhveq5ue4,* eer r -pk,arges along the line joining the two chargesu eeh,eev,r*-k5 r qp4?

  Electric field lines near psitive point chp z77wjq0)eg/ qooj y(arges

  The electric field shown b-2hn:e na7cv

  Can electric field lines intersgr;.q ybo 0b8vbyji ;+ect in free space?

  A solid block of metal in electrostatic equilibrium is plac) qh2 jnvh5aa(mjwntj1-; s* hed in a uniform electric field. Give a statement concerning;hhj( w-matj5han*jsq ) vn 12 the electric field in the block's interior.

  If a solid metal sphere and a hollow z3b3 6rcev f)f-wm, rrmetal sphere of equal diameters are each given the same chargrfmzcwv eb) 3r,f-r3 6e, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum m+h*, ikcpxh :(1v hjr6z/jho rests on a wooden table in a region where a uniform electric field is directed straight h c :zhj6+khrom(j*x/,1hvip upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e f-0 c,od5/ugsb zfv8electric charge

  A positive point charge is enclosed in a hollow metallic sphe k0h(hrm1j6 ulc zw6hc i;,1va2 hwn.bre that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow1h.z h l06ak1(ujr;wmh 2,6nicvb ch w sphere has

State three properties ofbz:k,a;l918zrw .uml c21 osxysc1h w conductors in static equilibrium.

State Gauss's law.

  The charge carried by onbb)kj z tlwz.0g9vttr;u 8n7 :e electron 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 neto0 pjrq90j1n +r1n aal charge of +2.00 mC. How many more protons than electrons does this piece of plastic ha9j npo a1j00q rn1la+rve?

  What is the charge on 1 k .ngstd,22jdadd9a e 0y/2kx :qb; abyg of protons?

  An atomic nucleus hat t12(( -qm+tb sehecas a charge 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 charg*bo1v y u*jrry0b o(i0e values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force betwe1i bub(00yo vyj**rroen them?

  A 1.0-C charge is 15 m from a second chn2mx9flvxo ;o+a2 . ezarge, and the force between them is 1.0 N. What is the magnitudox2av+;e xnzf o 9m.2le of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are the5 zdd5-xr d7 qoqfym;+y?

  The force between a q cg ,/9/xbmug$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyhj91 / g sn0z-:qwggigq3xci+mu*k) k 2.0 cm apart, experience a 1.0-N force. If they are movedig+ k: qhggi*umkgcjs3)q-x1z0 w/9n to a new separation 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. The first z9e op3hh,v.pchar9pvhz,3 hep.oge 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 charge at the origin?

  Three point charges are placed on the x-axis /dzme+,px8zo2vm5x j. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50emp5jmx,z/ xozdv2 8+ 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 thed e*ze+3tibq+f+v+ju l w,1fq following 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 magnibw+f q1v ,fjz+ilq d+*ut e3e+tude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a seiu0j36 ,ce rxv 68zs6mzbagl;cond point charge of -Q is placed at the upper-ul6xcsg0avbe ,r 8 z6mj36zi;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 i3 + y.6 an *lh 6bsotj75ve47dst( mnllmk;qbls 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 charge6q(ll5b 3lsa smy+o4 ; l7n m*knb tv67thedj.?

  Q1 = 6.0 nC is at (0.30 mkds2f- ):0szwic( zphv f1kh6, 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 on the 5.z ck hkd:v6wi-pf10 s(2 zfs)h0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqn51 rstx ),oqiuilateral triangle which 1ni st oq5x)r,measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whiv yi7 53iwacy2ch are separated by 3.0 m. At what point, on a line betweiiw73a2vy c5yen the two charges, would 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 auso2g4kloozi/ h8- r 7 *xz4hst the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerooxoz-4ruh*o74/s8 i2slk gh z?

  Charge +2q is placed atp3lzhta oq:9* the origin and charge -q is placed at x = 2a. Where can a third positive charge +q be paq * t:lz9p3holaced so that the force on it is zero?

  A copper penny has a 4 mw isqan.j.3mass 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 fgcxto) 1ajg67) jz b5vorce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is) agocj7bg 6) 1ztjvx5 the proton?

  Two 0.20-g metal spheres are hung from a common point+yuy1o nz5-z0jz nj( x by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces j1 jn+-(n z5yyz0u xozthem 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 the electrisop/s+r w(;y wc field at a distance of 1.0 m from thsp/wsyo (;r+w e nucleus?

  What are the magnitude and direction of the electric field at a distance of k :jar en,eu461.50 m fro nejkerua,4:6m a 50.0-nC charge?

  A 5.0-C charge is 10 m (fw, uqeb (7y++ne/m;t )i t*eghlyfefgq, p2from a small test charge. What is the magnitude of the electric field at the locap een7eth+bwgi t+qmfgfe2*/,)f uy( ;l q(y ,tion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirnnu f37o5v ,dsection of the electric fie f,53d7unnsov ld?

  A 5.0-C charge is 10 m from a small t , 3uunxw.:l)n: m3ouzild8 r9jea7nr est charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location orrd7:ln jnx :.in)wu38 z9a 3uu,mle of the test charge?

  Two point charges each have a value of dxc0mk-l(4w o 3.0 C and are separated by a distance of 4.0 m. Whatl- ( 0cwd4xmok is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of ,nuatub;5knqqbm4 (9 a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elect nq 5ma tu;bkq(u4bn,9ric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 92c, psoi wq4*ndhiqd)8)a dmcm mark of a meter stick and a -4.0 mC charge is placed at td cq 4oiin8,a9d*hqwd s2m)) phe 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.ar .d( a)op -*rs-pkpe0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude(- d -rpao)*a rs.pkep of the electric field at the point midway between them?

  Three 3.0 mC charges(c9nss1x/zn y are at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Fi9n /zs(1s yncxnd the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are p7,k7wp,kpb l 5dmiqz z .la:w-laced 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). Whw7llkmzk:a,7 - zw p5 p.qbi,dat 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 uniform ele /cz)l1p-pipj ctrppzj-lc i1)/ pic field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a 9y6ugskg gf /ov0 nv*ffs7*,n:b :rbq 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 0.120v v6.*c.6kz (w sfwkzm g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to bez*wc 6.svzkkf6 w(mv. suspended?

  A foam ball of mass 0.150 g carriep)t/hejyag em4z ,.u7s a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended ae.z hua je 7m,pt/y4g)gainst the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10ksdp .e8w h:ee1 10 mq.lsyh+v cm carries a charge of +2.0 mC. What is the magnitude of the electris.s1hl8hyd m +ke0q1:wvep .ec field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is z*gcn:bsm1x 4f+ mu ,mthe electric field 6.0 cm from the center o*c,unmgm:4 f1+ m sxbzf the sphere?