State the law of conservation of electric ch ev3,4vs:xraz. dh.k aarge.

  Is it possible for two negatvodgm ,)gtt+5 al.g2s 2ddwj 1ive charges to attract each other?

  Is it possible for a positive and a negativec,l.d+ vam)giabo. l) charge to attract each other?

  A glass rod is rubbed with a pie:. ct9m axtmu4ce of silk. During the process the glass rod acquirc uxtm 49am:t.es a positive charge and the silk

  A proton carries a

  The model of the atom 6; 1 ;2qkqp 1s9albekcnm(z oyshows a

  A neutral atom always hasz0ur k tb;0b7s

  An atom has more electron*ai*is 4qtjkb4y6 6yu s than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuc;m a ,kr4f-fdhlei are referred to d-afmh4, ;kfras

  Materials in which the electrons are bound very loosely to the nuclei and can 0tk jo.2c31hf 4xbx)rg1kz ls move about freely within the materialxlrk1 ozshbc 2fgt 3jx4k) 0.1 are referred to as

  A negatively charged rod is brought near one end of an uncharged metat)5-ylsbqqe: 9v7ly z l bar. The end of the metal bar fart e:yt9zb5q-l)7 qylv shest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl oq s2h dq6clkh)x4p73aced near each other on an insulated table. Sphere B ho3 x7kl )shqp64 dqc2is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an e; *k dhwv5:spli ncq0yi7a.0h lectroscope positively?

  An originally neutral electroscope is briefly cm 5/ztm+6,e(eo 6kqhpz r gprsm17 4htouched with a positively charged glass rod. The elecz5 6g h (q,h7spmzmct+kp1 /eoe64rrmtroscope

  An originally neutral )csoy/ izbqnxq syy.e3e;w(r g*44/5vxl, ipelectroscope is grounded briefly while a positively charged glass rod is held near it. Afte ,xzcesq.y oisgwny)5/y ;qv/ xrp*(be344lir the glass rod is removed, the electroscope

  A positive object touches a neutgb l xl1ch(is .q3ws.)ral electroscope, and the leaves separate. Then a negative object is brought near .lcis3sb)(gq 1hw.xlthe electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is qw 3wj2;erw/2 kx6 5recojf3 1wjy) domm.yq3placed on an insulated table. A neutral metallic ball rollscoy5j2wwx qde3 3;y3 /owq6 )j2 rkrjm1mwe.f 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 ball?

  Charge is

  What are the units of th0pvjf7 frs vz1 s kxj,:g/g;o6e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are sn,( dvv(: uj(ilet x-beparated by a distance d. The first charge is larger in magnitude than t,:l-idvtnv(( u(bj ex he second charge.

  Sphere A carries a net charge and sphere B is nel:n j,gwmi 5 xb2dn9;zgq47:k hgpz q*utral. They are placed near each other on an insulated table. Which statement best d5w 2z:i*lggx9:jp,n gk4nhd qbqm;z 7escribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If f0;hdrd 8 qxb yi1y/0 l)mr6uikp -:xfthe charges on both objects are doubled with no change in separation, the forh; rdpxxi)lr /u-i kbdy:6y18f0 mf 0qce between them

  Two charges are separated by a distance d and exert mutual attractive f(+wm+ cpg; 5mkr:6o tefzx 1baorces of F on each other. If the charges are separated by a distance of d/3, what are 6wom +5+ta:z;e pg1(xk bfmrc the new mutual forces?

  Two charged objects attract each other wi eu x6uu0gw3:tsy.nu)th a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between yn0uuuus :x )6t.w ge3their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated hx5 c.o2( xszpm4a0:a s+owspby a distance of 1.0 m. What happens to the magnitude of the force on the proton if a seco0asssxxc5 :2po .whz 4ma+( pond electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.5,n(4/ *z84fe nvm 5hq g m uaslif4pm/vp(hky0 m. What happens to the magnitude of the force on the firs5m4v( vmuayn4gkf /8h*q/ ,(4shm5ifpzeplnt electron if a second electron is placed next to the proton?

  An electron and a proton a;vlaf68iqc1z9kq0lrpji cz:;x7 h *v re separated by a distance of 1.0 m. What happens to the size vkai9vx;6l: zi7jqf0hl; p rcz qc*81 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 square. When a second pvq-fk; 4g hg4coint 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. fgvk44chg ;q- 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 anrqa fk .b,a0l6 equilateral triangle. When a second charge of +Q is placed at one of thqk.6b ara0lf, e 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 vertices?

  Which of the following ist(* / xg vx6iwqi8k*pc not a vector?

  At twice the distance from a point charge, the strength of the electmpa b y hs:h0l* ; nz(w)5kgl2r6qtz0gric field

  Is it possible to havwq70/qe k1mcpg1m *be e a zero electric field value between a negative and positive charge along the line joining the twom7qp1 /gweeqmc1k0 b* charges?

  Is it possible to have a zero electric fgp)k ffenw772s czd*pmwhee/ ;-: 6xv ield value between two positive charges along t* nm:-fpvk)d; / gxe fw27c76e zewphshe line joining the two charges?

  Electric field lines near psitive 9enb(v (k o)-ypqg5llpoint charges

  The electric field shown 4r nw3sxnv3fw8ku44i

  Can electric field lines intersect in he;9jxxo 2w)oo6ni:ex4os - :uky w2ifree space?

  A solid block of metal in electronb2y ilt69t r:static equilibrium is placed in a uniform electric field. Gi2 r nbt69l:ityve a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters areqzd0g91w,h 36uo 3cjsg 1h v(me ojjh2 each given the same chargejo9 w102h, csmqe(3hggv16hz3o judj, the electric field (E) midway between the center and the surface is

  A cubic block of aluminvi -;+i6fbx vpk(b8z yt vaq:qiq;0 ,kum rests on a wooden table in a region where a uniform electric field is directed straightv:aiiv +kyki ,(qv qfxbt8;6 0bpq;z- upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near tv 6oo+yi7b.kt)+ npj6iun0m an electric charge

  A positive point charge is enclosed in a hollow metallic spher /b8o4zizq,dv *yg y1r vl8o(ce that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly a4(q, 1o vb*o/cvd8rygy8l izz bove the hollow sphere has

State three propertij- y uo6cik( 3txb+qo2es of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron;)*k v hdui/o8mgxa 43dnim- a 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 than eld vji;,8bp6ml) 4 v kn(0tzgjyectrons does this piece of pln,)zydj0 (l;tvvp4 mg8kj i6 bastic have?

  What is the charge on dx35grig +s;ufo 8df31 kg of protons?

  An atomic nucleus has a c 1d u9n2wsjsqh0riwh,r*ao b 2b;w 8h0harge 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, hxi-dm(hvp nkn3 l46u 6ave charge values of 2.0 and -4.0 mC, respectively. What is 3n(l -di64 6hmu xnpvkthe magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a se6 dds1n9dk xa5( 4vue9gk o-drcond charge, and the force between them is 1.0 N. What is the magnitude of the seg5u4nv6exd o1-d dksa(kr99dcond charge?

  Two 1.0-C charges have a force between them oerh ce l5h7 /d,qw4c5mf 1.0 N. How far apart are they?

  The force between a x pl:g v0qesx/2;ld1z$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, e rrvd; ym 9/uhio1+pi8xperience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwerdv8hui+;r 9yi1/ mpoen them?

  Three identical point charges of 2.0 mC are plarvr9 yc2 j*p3lsb* 2pyced on the x-axis. The first charge is at the origin, the sebjyyslc*29 vr p*r p32cond 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 +2.0vc) xki/oko 02 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark. Whai2 k0 ov)xco/kt 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 positions: Qa:4l 09r7n4kgr yz spjjx/ v:x1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0;rnxj 4:x:k 9yg7/0p zlrjv s4a 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 placed at the center of a squarh zmycaei4q,*jaj) 1 // aqdk6e, and a second point charge of -Q is placed at the upper-left corner. It is o/ y)jdjz/ *qce 61qaamaih4k,bserved 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 is at (0, 0.10 m); Q3 = 5.0 c rzogcu9.0v4;r8i zgnC is at (0, 0). What iri;cu0o.g4zcr 98 zvgs 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 nC is at (0, 0.10 m); Q3 = 5.0 nC is ajv*s,+oa s jfd,*n 6pgt (0, 0). What is the direction of t*noj gv+f,6p,sa * sdjhe net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateflu6ao ojnp 63 p//0gnral triangle whic0oap3n6n ul/ ofgj /6ph 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+djcpkkgfq ,6l a7;g.0:5zv- de tg mh, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place.h ,cla+0k ;d7 fg6mgvgqt:-jd k5epz 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-Cfb f0rux(qu xsvn4*88 charge is at x = 4.0 m. Where on th8 su frxnq0vfbx8*u (4e x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge - g(hf- dj4bz ,t;teunp4y kk3.cce 1:gq is placed at x = 2a. Where can a third positick; u z(-pet3 jgc g41,f.4ekynbht:dve charge +q be placed so that the force on it is zero?

  A copper penny has a ma9yq6im nj: o 1e1chf:4rwce9vss 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 force of gravie xy749ew .; zx)4sz+onxr t2vm o8fvjty by the attraction of a fixed proton some distance above it. How far above the electro9x47vxnw)4z e j+ 2emozfo.v8ysr tx; n is the proton?

  Two 0.20-g metal spheres are hung from a common point by :p,c 2k/5jf xfdj;vz5d:t: is5yt zezll;d7v nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatitz e;25vtfzj: d5:z; lc jd,yl7: x/pifs5v dkc 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 charg(5cpn y0aqtc +e of +40e. What is the magnitude of the electric field at a distance of 1.0 m from tht5c+( 0pq ycnae nucleus?

  What are the magnitude and direction of the electric fiel1k( 2m 5qwstopd at a distance of 1.50 m from a 50.0-nC charg1ok(q pm5 tws2e?

  A 5.0-C charge is 10 m from a s pxua ;pi,d/p1mall test charge. What is the magnitude of the electric fieldpap1ix,;/ d pu at the location of the test charge?

  A 5.0-C charge is 10 m from a smalk -rv0tx2sm 5,c4gnox l test charge. What is the direction of the electricsv x ,k 4mo-2rgxtn0c5 field?

  A 5.0-C charge is 10 m from a small test charge. What is the magni*9otonr 8/e* 3ijad- eb yy2cq+pkl,u tude of the force experip+q8i yot9 e2kl o/*rnauce *dy ,jb3-enced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separe8re./w) c pyrated by a distance of 4.0 m. What is the electric field ac wy. )ree/rp8t a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4p ;gj ll)+iof7.0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 cm mo) j gi7;pfl+lark?

  A 5.0-mC charge is placed at-h/ep ,mhd- eg the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what poine-,/dphmeh- gt on a line joining the two charges is the electric field zero?

  Two point charges of +pgoz0ald ,j,n8 c9+v x3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of th pjxngao0,zdv,+ l98c e electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. The bc - x fr/ydk8ax(l(p+last corner is+(k(r bxlay / cf-pd8x occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.1u3l+c hqjuk 70 m on a side. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 l cu3+1k7hqju 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 oyik 6i x*1jnq.n a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this ekix*1. jinq y6lectric field?

  A particle with a chargew cd(lw8hh+x;r p :uh5 ic;t-z+yds,arrdr -: of 4.0 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 placed in an electric field of 6000 N/Czwcn7cg7k4qduwd)yy :q26b 7 pointing downward. What charge must be placed on the ball for it to be suspendnd6 yk4y 7bc7c7 gwq:q2w)duzed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed im r6e;-mew 1ing lokq3 3vm80fnside a uniform electric field, and is suspended against the force of gravity. What are the en l e 3igowk;qmfv036r8m-1m magnitude and direction of the electric field?

  A metal sphere of radius 10 ; 4yg:hqixbh2 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spher2h qih 4bg:yx;e's surface?

  A metal sphere of radius 2.0 cm (2j8s- gj51 aogfyrl kuo+pl2carries a charge of 3.0 mC. What is the electric field 6 g5j+ (kolao 2s82gj1l- urfyp.0 cm from the center of the sphere?