State the law of conservation of electkutlnng+ou o:+:;ks * ric charge.

  Is it possible for two negative charges to attract eacha7u 80zkmkcn + other?

  Is it possible for a positive andk tw6boq8o*+ );i gtjt a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rp/ggqas0./ ddkrc,8k)h5ig zod acquires a positive charge and the silak8d/g g s.id/5 c0zgpkrq,)hk

  A proton carries a

  The model of the atom shows rdil0* .829tpo5nn *d- h6 fbsyalkyo a

  A neutral atom always haso1(emz5im g8yd3i+ lp enan. si /*t)bzv8p2 a

  An atom has more electrons than prsz)+e8p j( jiiotons. The atom is

  Materials in which the bmgx s9ha995iju9tfh yy,6fkc(f;9f electrons are bound very tightly to the nuclei are referred t9u f mfkatj, (9s9c 9;gh9 xyf56bfyiho as

  Materials in which the electrons are bound very loosely to the nuclei and )*i.3a3 k+ve5iqaewcu pcxsho74f6p can move about freely withip ci5 3 xev +s4i6wca3p ).a*huofqe7kn the material are referred to as

  A negatively charged rod is brought n*86b o iyc sxp(uy6e,7uxanj)ear one end of an uncharged metal bar. The end of the noa*se yx(jxui6 uc,7 b )68pymetal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charg2ka6a wx sviq6f +v. (2rsoc/se, and sphere B is neutral. They are placed near each other on an in2ifa vvr+s 6xwscs6 ak/.o2q(sulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivel eh edum7xbyjd)c ,k+d)ea58/t)him6y?

  An originally neutral electroslq ymth.8u)9 eux 9v -.j.ohuucope is briefly touched with a positively charged gumuthlxe8 v9.h9). uuy.qo j-lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positivelzd( ) jqm, o/lbf4yf6ija+qf /y charged glass rod is held near it. After the glass rod is removed, tq om/) zi/6lf 4,aq+j( yjfbfdhe electroscope

  A positive object touches a neutral electroscope, and the lewpec(dt +z0ih 14.w( c*ykha(v,oerws (7 dx raves separate. Then a negative object is brought near the electroscope, but doezor4 ,0 c.a+x*(kwdet1 p((cwvi7r e(hhsywds not touch it. What happens to the leaves?

  A large negatively charged object is placed on an iye0a p vj)*iso*+oxx+nsulated table. A neutral metallic ball rolls straight t)o0+ayjxs*i+ *p ov xeoward 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 the Coulomb ct2d4.nk/;6 g sow7 r:omyf2mxwre g1ponstant $k$, which appears in Coulomb's law?

  Two charged objects aru 1f, co.2tgee jk:,tue separated by a distance d. The first charge is larger in magnitude ,,.euge: fku1tcjo2tthan the second charge.

  Sphere A carries a net cho+ oqhd6i.n9h bpnx 6;arge and sphere B is neutral. They are placed near eachhoi6xq9.n n;po+ h6db other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract eaf 65vi-dj oxhr ob(j:4ch other with a certain force. If the charges on both objects are doubled with no change in separation, the force b6 dh:or5f vi(j-o4 jbxetween them

  Two charges are separa j8*eiy 0jvm0sted by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual f *e80 ysvmij0jorces?

  Two charged objects attract each other with a yzr4 m cqax4c 7b+qre:x-i(b,force F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is reduced to one-fourth its original value? qe,(x xy7:b4r+4qa -icb rzcmThe force is now equal to

  An electron and a proton are separated by a distagr-8; op9 urqpr u /m)fs-2havnce of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the r89a2rusoppumrf g ;-h) -/vqfirst electron?

  An electron and a proton x0r3gvmyldr.u xtqohs8+ ew,;34z 7oare separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to ; ho zort8wemsu.34+,7xd0 y3xlgrv qthe proton?

  An electron and a proton are separated bocv4v9 8ib6jx y 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 j 6v9oi xv84cbcloser to the proton?

  A point charge of +Q is6am lvi:dg1 pr z8i0se*kjb63 placed 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 -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 1* :38il bidrs0gavj6ze p 6mkof the square?

  A point charge of +Q is placed at the centroid ofr kj4n /w;4-c4pu0ekeq )yqk g 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 center charge due to a third charge of +Q pep ne wcq04-jk4gkyq/r;k4)u laced at one of the other vertices?

  Which of the following is not a vecjqk* *twk ( jsndtw; 889l i*;gz9ndvmtor?

  At twice the distance from a point charge, the stq0 1xp4/4, tlm:nq e/5wjan5xsaumkjrength of the electric field

  Is it possible to have a zero electric field value betweekh1a1imh yud 9/zdx6 1n a negative and positive charge along the line joining the two charu a/hd6xhdm y1ki11z9ges?

  Is it possible to have a zerodo es.c1b/1 3er4eq6hvulxc9 electric field value between two positive charges along the line celd3v.rehboq /ec41u1x 9s 6 joining the two charges?

  Electric field lines near psitive point chargh8jg 1ix zihtvz/k*+p4onqz/ w(.b b 2es

  The electric field show368 qv4tgz edfn

  Can electric field lines intersect in ffh+ pcss ,.7ooree space?

  A solid block of metal in electrostatic equilibrium is placed 2jo )db; 0xggros-ct( fv vj)(in a uniform electric field. Givets v cg2v;) odf-j()or0g (jbx a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameterscd0 s;)gdsib6wb v3; e /lkr*u are each given the same charge, the electric field (E) midway between the center and the surface isluce0kbwdrvsi )/ ;;3s 6gb *d

  A cubic block of aluminum rests on a wooden tabler s v:-xz-shi6 in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surfac rsxi-z- hs6:ve?

  If a conductor is in electrostat;ny7 hfpa9qy-b(w( + yz fp.jcic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spheno5 fe:+ duex2re that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly aboveex+5f:2dnu o e the hollow sphere has

State three properties of conductors in stat ubmsp -s-x *04 b5r0q,p fbrmuc0h2seic equilibrium.

State Gauss's law.

  The charge carried by onc+,zb;sxe -h1fn9x 0z5w3bw4j hi zefe 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 net charge of +2.00 mC. Ho5opfl:l z5 6flw many more protons than electronfopf6 5 :z5llls does this piece of plastic have?

  What is the charge on 1 kg of pros ,34xie7+alyf7 gqxdtons?

  An atomic nucleus has a charge o4pxx hbop76yij( ki2ptq5wo4x9( u f0f $+40e$. 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, ihv)wm(b yf5v + qz-4crespectively. What is the magnitu(4 b vvh )cfm5-wi+zqyde of the electric force between them?

  A 1.0-C charge is 15 m from a second char 8h3l-znz*m bgge, and the force between them is 1.0 N. What is the magnz n3-h*bmlgz8 itude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart afuttzb.-0; vd re they?

  The force between a q*( l;9buuvsqw p:n-l$30 \; mC$ 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-N force. If they vm/r/e mna b h 540q tg:21rif1-dnvrtare moved to a new separation of 8.0 cm, what is the electric forrn fgne-r /q4dh52tr1 v1mb 0ti/va:m ce between them?

  Three identical point charges of 2.0 mC are placed on the x-axhtk :8tpz1r 6sp:uo wt lm5(7gh7au4 xis. The first charge is at the origins1huwtmh7 z7 4tp(g oratpx8k56 u l::, 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 place drwb; tgv8ce6bkm)n(qpck.-+ shl: 0d on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at t+blbpd 6knrk(cg -:ew8m. ) 0hc s;tqvhe 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 followingqel0 s,qqx /r6 positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = s,/6q lqrxe0q-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 square, and a second point c6wg: d+d i kag.2.ymqqharge 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+6dq:mw q.i.ya kg 2gd 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); Q-:jc8jl 9*ugco a b. egf7/(ykj2k u*vizfzo42 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isfczg u e-c4 guov(8: 7oj*zjj9/.ib2y*l kfka 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 lsz .k*cd fk0e8l,4 bxjuik gg7312yhat (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC chxg2*ij,8hkc47yzgllk k0fd e3.sub 1 arge?

  Three identical charges of 3.0 mC are placed at the vertices ofh w*k gseg3htu3t1v i)+dsf6. an equilateral triangle which measures 30 cm on a side. . ts)huihgsw1ge 6ft3k3*+v d What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, wh(y5wx s6ughfrafa/s.lv e 3 )9ich are separated by 3.0 m. At what point, on a line between the ts)9h rs/yea36gx w(vf5f u.lawo 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 4g:-irhze js2and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a rs:j4 -ihz2egthird charge 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 can/)by)ius- g f uj;tb-yh,3a th; fe:hgiy )ch/ a third positive charge +q be placed so thata-b)/iyc) sify;,3u h-h/j fg;hby : tuhg)et the force on it is zero?

  A copper penny has a mv m1xm* jssse1z;lx- 4ass 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 thd1ge v o4rq.s:75pnm ee force of gravity by the attraction of a fixed proton some distance abo n rqv:4ges7p 1.edmo5ve it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a cuj :q 3qi7q3msommon point by nonconducting threads which are 30 cm long. Both are given identical charges, m3q 7q3s:iqj uand 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 a4koneu) tby s;p h53u. charge of +40e. What is the magnitude of the electric field at a distuhnp)s5o4 .by k; ue3tance of 1.0 m from the nucleus?

  What are the magnitude and direction tho nx -0e3k,2uu psdo-c wmy068 xv)oof the electric field at a distance of 1.50 m ftkooe6v,- sx0-dywu8 xu 02m3onc) hprom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small testwyx8:+muym i5 charge. What is the magnitude of the electric field at the location of they uyim8mxw+5 : test charge?

  A 5.0-C charge is 10 m from a small tesw e34ghc*h z4mzoh4+s t charge. What is the direction of the electg44 wehz*hh+4s3mz c oric field?

  A 5.0-C charge is 10 m from a small test charge. What is th:rmq 6kmddo lg 9y,15t9cwv1r e magnitude of the force experienced by a 1.0 nC charge placed at the locatt5mvr9g 1:rmcq, y 1wdokld 96ion of the test charge?

  Two point charges eac) m85e8ddqy teh have a value of 3.0 C and are separated by a distance of 4.0 m. 8 t5yeed 8md)qWhat 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 a meter stick and a -bz,lsdzqd2yc67 pn1e v u:tde 5k:4o04.0 mC charge is placed at the 50 cmu2 esdy56q 4dk0o71nvld:,pz c ebt:z mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC chargei3*qv jmqs-a 4+z6 acq is placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zq3jc-ma + av4*qq s6izero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x n3 k3rg61vy; j 5ldlzt= 0.20 m. What is the magnitude of the elecgyvd z5 k6j33ltn; r1ltric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a s -eab2j81z ,fo 6qzeed(odvr )quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the b j (,8eorazz1- ev)d62fq doecenter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed ay-jk3p86wzr 9bxz ( clt the corners of the square as wy xp8zz jlkr(c63b-9follows: +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 electric field at the square's center?

  A force of 10 N acts on a charge o3cxoro(5y4zas r tp s6t:7jp ,f 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thircy jpp4(s ao6x,tortz3 s7:5s electric field?

  A particle with a charge of 4.0 u:uz1*5o)d 2bug aikcmC 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.l.haf32 -3ayro +jous fuqqq65u +4lb120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed ojqafo.+ +-aly ur s633qu lfbuq54h2 on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The59ilk8i mjq+pz9/+ iqk qsf 6i ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude andqz8l+ii9qmkkf+p 6i/9sj qi5 direction of the electric field?

  A metal sphere of radius 10 cm carries a che 0i:lad1 n+cu+. gyalarge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface?cyad : ueli+.n+al0g1

  A metal sphere of radius 2.0 cm c qdv(9v:)n3 t1*ldufeu.resb arries a charge of 3.0 mC. What is the electric field 6.0 cm from the cd qd)l*s3: e rt9vef1 bu.n(uventer of the sphere?