State the law of conservation of electricrqy fn1u1zak vj+ai0588)srq charge.

  Is it possible for two negative charges to attract agr0dglg ab5a21xd0 6each other?

  Is it possible for a positive;q b,a)28j twio oswh7 and a negative charge to attract each other?

  A glass rod is rubbed with a pyleijd8 7(inge cm(w0-jf8. diece of silk. During the process the glass rod acquires a positive charge and th icg.dnlmj (ey88-jie(w0d f7e silk

  A proton carries a

  The model of the atom she *(y48kq;iblhw2o3q ri j qx-ows a

  A neutral atom always h i6hst2hv*/c+ vv- dl5uly*fhas

  An atom has more electrons than pr4 od r*bmdj/ rf1iuc1ri7 )3hsotons. The atom is

  Materials in which the electrons are bs;mg2 b)3cn(f: jmafa ound very tightly to the nuclei are referred tomjanf f3m)s (cb:2ga; as

  Materials in which the electrons are bomaquvp 2y/v eav8n2 84und very loosely to the nuclei and can move about freely within the mater8 42epq/uv8aym avv2n ial are referred to as

  A negatively charged rod is brought near one end of an uncharged met3: egm+7z2/kphq cxkrc 99fptal bar. The end of the metal bar farthest from thezht k+c37 :g/p fmer qc29x9pk charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They jroh)+(7g +5wycg:vcbyx0 pa are placed near each r:gcy(wj)h5c+v bo pag7y0+xother on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod 75vil ; tw* l55ssp)4boy:8zwchcy b icharge an electroscope positively?

  An originally neutral electroscope is briefly touched with 4 mt+h02lxcbz a positively charged glass rod. The elecbz+hx4 0t2cm ltroscope

  An originally neutral electroscope is grounded b;orlz.he exp9q o/v3-riefly while a positively charged g3qee;/oo xlr 9pv-h.z lass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Tlb(ck r kx*)6dr pgkr7y-t hk3b0dk:,lnw)o, hen a negative object is brought near the electroscope, but does not touch it. What happens to the lea6k-( hrxr do7nbl)kk 3drlbp0*)wc gyk:,t k,ves?

  A large negatively charged obe3i t:e3zi4 0ykowkqu9 r 1q.oject is 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 ball313ko i9 erzkuqw0to q:ie.y4, 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 the Coulomb cons.wf:ww/bc b4y o7su y/tant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first cv5/ wk; (yrg2blr iju/m/7d3vl+jfymharge is larger ib/r(mwy3m5vjl+filr 7 / g2y; kujdv/n magnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They arek- udmu0 zhmik,k01l /hl ln74 placed near each other on an insulatedukm m 7-inlkd0hz/ 1kluh,04l table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charges(1q(l.t rxlh s on both objects are doub((qh .rstxll1led with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual kc, iq x;6a+6asrk n2gattractive forces of F on each other. If the charges are separated by a distancx gqarik c+26; 6skan,e of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What hajv/h:j5jy 1o ejc.elo0c: /bg t01mb wppens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their vtw1me : j0 boj:1 cch0g /.ylo5ejjb/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 ha6(m1mb3cy kjw hri75lb 4mu p5ppens to the magnitude of 4bmb53pyjul mkm hi65w(cr1 7 the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are jpxcp)w s1v+a/x e:f(q1ct2 lseparated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second:ct pxq+ vaw(c j)2leps/ 1xf1 electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.,a/,c 1erhfa60w gj rj0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the projjah1 6rceg,r,awf0/ ton?

  A point charge of +Q is pj p0t 4fgsqw6;laced 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 forps0f46jw;q tg ce 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 electrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q7-p sci zacsl7h n8z;d*he d+3 is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle h83s 7z*ps de cld+-cnihza7;'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 vertices?

  Which of the followiod,k ,oxqog,tv)+w9 xng is not a vector?

  At twice the distance from a point charge, the strength ofwiq5( (ij3 d3q z8je hgu*woj4 the electric field

  Is it possible to have a zero electric field value between a n w9pnr0 ,7zgknegative and positive charge along the line joinin,r0n nkzg79wpg the two charges?

  Is it possible to have a zero electri ugbv;4wa7m)aeru9ai sj/*8 vc field value between two positive charges along the i;ma/vaa4e 8srg jv7b)*uuw9line joining the two charges?

  Electric field lines near psitive point c,-. s3qx l8h cdycf):q(djo jdharges

  The electric field showmdo-xduj)o7 xjo 2 8u+kh75ukn

  Can electric field li 6,-na w /o),*kjtv cn)zhxqlfnes intersect in free space?

  A solid block of metal in eleklu1ut1; yi2ectrostatic equilibrium is placed in a uniform electric field. Give a statement k1y 2euu li1t;concerning the electric field in the block's interior.

  If a solid metal sphere and:jp mhnlaiv-fq11n(8uc 42lfd 4 1jwr a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center andm12inqa1nhf jcfl : u(4p14 l-rvdw8j the surface is

  A cubic block of aluminum rests og u ub- +ayblkc9 4wf06o37wnun a wooden table in a region where a uniform electric field is directed straincg49uk0af -lb ow u3+ y6w7bught upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in 9po-bp6 m-fpz )ci k)yelectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that 8 +vaywy dn-+1zhh7nzis grounded. As compared to t ++ny z8dnwvhh1-az7y he case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in stll 1jh k(;w t85hc4jr0sar6mtatic equilibrium.

State Gauss's law.

  The charge carried by one 12getco:rjok 8 q(d t6electron 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. 6)bam)(i3 r1aas dvtc How many more protons than electrons does this piece of plastic have? a(3sa)amvb tc6i dr1)

  What is the charge on 1 kg of prot2nchie4qj( d;-a ib; cy 3f7rwons?

  An atomic nucleus ha d o)ypl0zfu63s 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 charge values of 2.0 and -4.0 mz+keus;g(w5;s 8 gmlaC, respectively. What is the magnitud 8zl;swgam+5e( kus;ge of the electric force between them?

  A 1.0-C charge is 15 m from a secongv9 2(gqp/hqqdm h+ q;d charge, and the force between them is 1.0 N. What is the magnitude of the secong2qqm vhh/p(qg;9 + dqd charge?

  Two 1.0-C charges have a force between ezz8z 78b 7-digb(wyp them of 1.0 N. How far apart are they?

  The force between a kkz+5a6p-.sh(un jo6yf/zc t$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initi,+ nbx x:5;auqwk, d.tze 9nrbl. a*d1eve/trally 2.0 cm apart, experience a 1.0-N force. If they are moved tezxdl na5.x dq*9b rt/1.,rn;ue,tb+ a wv:eko 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 firw369c: bdu w7zzwi(hw st charge is at the origin, the second to the right at x = 50 cm, and the third is:b9 (6uwh3wzw ic d7zw 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 i0l hrwu1d 592jum;wnb s placed at the origin, -2.0 m C to the right al 9b1m hu5w;2njw0ru dt 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 followin 8vm 0hubc(35b;uxk l(vvkxn:; mkl+pg 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 (v k:v ;kc03 xx5( b;um 8lnmpbluvkh+the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placc cr ej720kh0wed at the center of 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 tha ch0cjkwe20 7rt 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 atit8/ll5- t 0jhsh; uoh (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the 5ts8ltuhh;ijh o0 -l /net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0ph4-vjb y- c7v.30 m, 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 pj--cby7hvv 4the 5.0 nC charge?

  Three identical charges of 3.0 mC are( d gamz-syz.lixmg6.j0 xa44 placed at the vertices of an equilateral triangle which measures 30 cm on a side. What0gy-sx6im.4z4zg a l xd(a.jm 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.c21lrv bqgasm2 57 kxeparated by 3.0 m. At what point, krcvl.17a2gxbm q5 2son a line between 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 at the origin and a +9.0-C charge is at x = 4.0 m.d uada)-pj5x8 Where on the x-axis can)aj updxd-5a8 a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin andt 3k*wrrc 9 xs:9h5ncsd(vp. homwt(+ charge -q is placed at x = 2a. Where can a third positive cs* w tc9s(5+(rm3.9rpcxk vh od:hwtn harge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A t4+koku; gsb:kotal 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 grazd wt 8lm7x,k,y k5aw1vity by the attraction of a fixed proton some distance above it. How far atklw,8 1wkz 5,y7dxmabove the electron is the proton?

  Two 0.20-g metal spheres are hung from a common a26 /lo48 qoqd-fv )xmg/vntn )g/rwppoint by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostapt/8 gwvn24-/no 6g oavlq)x rm/q)dftic 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 macg6);0 iyo e)w v-mhqtgnitude of the electric field at a distance ofhi-)0mo cg;6 )tywvq e 1.0 m from the nucleus?

  What are the magnitude and direction of the electric - d8,ghb+kmhrfield at a distance of 1.50 m from a 50.0-nC chhhk- +,8bd gmrarge?

  A 5.0-C charge is 10 m from a small test charge. What is thea x r:f+1 v 1iv dbok(yt7pa)ouo5+-ex magnitude of the electri(o 1 5ofrekyat17+x-:id )bavp+xuov c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small h g/ dzr4gi//e5auz5otest charge. What is the direction of the electric4 a/zdg5 uri/o 5z/ehg field?

  A 5.0-C charge is 10 m from a small test charge. What aoc)r4)l 4exbos ,4bele+-f:g r ppa6is the magnitude of the force experienced by a 1.0 nC charge pla eo-flleb)r x4:6oa4crap p+)b4,se gced at the location of the test charge?

  Two point charges each have a value ot-kuz15dz(/ay;kfe.0 hnca om(t p 0bf 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?y0kmo u;t b z fd.0hkcna5t1 -pe((/za

  A 5.0-mC charge is placed at the 0 cm mark uae)6m a.r)2 urbitdd4k.)hp 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 2. 4pit.e )6 aadu) rhmdurb)kcm mark?

  A 5.0-mC charge is placedb*5fnm v1fa1,txdn 5y 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 joining the t dx5at5f,fm*1 bv nyn1wo 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. mqtml0hx/ fc)1nh6w ;What is the magnitude of the electric field at the point midway between them0 xf)m;1 nh 6htq/lcmw?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mvlbh*.umwrc 4tgg+o cp60 p0/. The last corner is occupied by a -3.0 mC charge. lwg0c b0h omur* 4+/6g ppt.cvFind the electric field at the center of the square.

  Consider a square whicmybf nzg5o,,zv8as:5 h is 1.0 m on a side. Charges are placed 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 magnitudefn b5zms,8zy5vaog :, of the electric field at the square's center?

  A force of 10 N acts on a charge of ryec ga+dhh-wdxjp/ 75a) 6+w5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fiel5e)cdywx /dag7rjp -h+hw6+ad?

  A particle with a charge of 4 a+f*zwtq7jg. .0 mC 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 plaj5gff:jv)*b 0)yfeeo ced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it f * feefo))0 jj5vgb:yto be suspended?

  A foam ball of mass 0.150 g carries a chargdp/qm; m+ 5lsd a;ifp 20u3tjne of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended againsa0fm i+pd ;dls ;5p32tnq/jmut the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a chiag,q(el9 ; ol/ka qv7arge of +2.0 mC. What is the magnitude of the elecl/g, vq;ako i9(7qaletric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chbsrk ar:e*iaphk/ o* 66 mtjcvv*o 076arge of 3.0 mC. What is the electric field 6.0 cm eomv7:ta60*k/ racb6k*r6jopsi*hv from the center of the sphere?