State the law of conservation );:pq13)4 miiqp hyk4axcgfb of electric charge.

  Is it possible for tw fta k:h0zd6)/n ygfd.o negative charges to attract each other?

  Is it possible for a positive and a negative charge to at,lbgn ljt* b+79u2f4 r7psiuptract each other?

  A glass rod is rubbed wiih5m,opu2mrb,r6le 0h 6p yd,th a piece of silk. During the process the glass rod acquires a positive charge and yph o 6 ,,prhudi6,mrb52 mle0the silk

  A proton carries a

  The model of the atom r;( jc7:ufhl- omnib-shows a

  A neutral atom always k+hcmhefq d /n*8g)4)m1fm kohas

  An atom has more electrons than protons. Thxcw7 l8f .yzag/;v w:xe atom is

  Materials in which the electrons are bound very tightly to the nuclei are+hf0j hq6ttlv k 85j1m referr60hq8v f+kjl5h jtt 1med to as

  Materials in which the electrons are bgp 5:*tr- lld qoyhn2ne81tg+ e- d0lsound very loosely to the nuclei and can move about freely within the-gd +t8e*0-2 d hty s1r o:lel5lnqnpg material are referred to as

  A negatively charged rod *)anesekl) 4eis brought near one end of an uncharged metal bar. The end of the meta4ekse)ea)* l nl bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is ne tbx:9 my:40tmmzpd;hyx5)ii utral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statemenm9p0xt: i:t)zxim d5;y by4mh t is correct?

  How can a negatively charged rod charge an electroscope p9cv.daw9fffet91v 8hs+ 8s z hositively?

  An originally neutral electroscope is briefly touched with a positm+z*2z .)5fdl 0uf z tcqsz4txively charged glass rod.)l*fqmt+ sutdz.2czf54z z0 x The electroscope

  An originally neutral electroscope is grounded briefly while a positivnib9 y.qu)7 ;4tyzt bbely charged glass rod is held near it. After the glass rod is removed, the electr uz9) 7ytbytb4q;b .nioscope

  A positive object touches a neutral+d ar:2 ;ybjgiy vrw58 electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it8v dr2w5a:jgr;y+y bi . What happens to the leaves?

  A large negatively charged object is placed on an insulated tavdg80e ; cytu ssk,*;h2tvt f:a4f 4dkh+re4jble. 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 ff hkc8uttg,4he2 ;dsd*0t+4es ay r;j kvv4: on each ball?

  Charge is

  What are the units of the Couljv dyxra/63q 7nicl(otvb7; )omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fip;h jmxs 1a 4chj4dthg6y- h1*rst charge is larger in magnitude than the second chargesh1gh-h hp;xy *aj44mc tjd61.

  Sphere A carries a net charge and spherdk47vu b mdfbit1 f20,e B is neutral. They are placed near each other on an insulated table. Which sfidd74 ,tkub1b2f 0m vtatement best describes the electrostatic force between them?

  Two charged objects attract each other with a ceb2 6v9 sfjunz; fu4a:c*iz(wvrtain force. If the charges on both objects are doubled with no change in separation, tjs 9;a2u vuzn4c:z*vf6 (w bfihe force between them

  Two charges are separated cq,j9 h 4m(8e3etbnrs 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 forc nh389sceq,t b4 ejmr(es?

  Two charged objects attract each other with a force F. What happens to the forcvd1 dggn*l-4tdw vk*/6 e+ck me between them if one g kl416kmg** w+vt/v-en ddcd charge is doubled, the other charge is tripled, 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 se3j+q1,:iggulbm9dkvtof):k b xx2 (eparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed nex, :v)b +tm2dbx jeo39:xkf u1kgqi(g lt to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. jij o-cv2;7 psf r84by What happens to the magnitude of the force on thesp4obji jr;2- yvc 87f first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a +umtal*h - i+ e4sb)hbdistance of 1.0 m. What happens to the size of the4u s- a *+bmleihh+bt) 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 cesw/ t 0)kr4o7yw;g;pkp far(ynter of a square. When a second point charge of -Q is placed at one (f;4ay7/ r)k0owpwy ;psktrg 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 of the square?

  A point charge of +Q i.jz9fn8d *z tyhglj 5ss(0y r6s placed at the centroid 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(lhgj80zrdsn 6zj9*t5 f. yys 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 followinp*7t as33)wtjcy6bjqn ofp,1t9 ut4hg is not a vector?

  At twice the distance from a point charge, the strength of the eluu k3,+c9 soinectric field

  Is it possible to have a zero electric field value between a negative and 53gwchpwlo1 q0w (uv2u,2zic ccd 9l*positive charge along the line joi3cg2 hl,2izclq0wow *c 1uu (9c5wvdpning the two charges?

  Is it possible to have a zero electric field value between two posit .h 50o,vjhwicry q/k3ive charges along the line joining the two chargeswv,hcq5iy rj0.k/ oh3 ?

  Electric field lines near psitive point chargesw:,(u i5fohvkbj7hw 3

  The electric field shown qset 4a )*ix5r

  Can electric field lines intersecte sdhm qi4w,dr*m 3.-b in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform electxr09q(xrv -lw 0l cvu)ric field. Giveq l 90v-wxxrcr(0u)v l a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters arvbytk)/b6t7s e each given the same charge, the electric field (E) midway vt7 y)sk/6tbbbetween the center and the surface is

  A cubic block of aluminum rests on a wooden table in 7w91kczp 4b+u *vel) szvu8j ja region where a uniform electric field is directed straight upward. What can be zksepvljz*97 b w)+uv841cu jsaid concerning the charge on the block's top surface?

  If a conductor is in elec 9tje)- zssk:vyz im-)trostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic s mo l98sc0ag0i 53mtexphere that is grounded. As compared to the case without the hollow sphe 3o0msmt9ixg8 ca5e 0lre, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium.)y1 x1, ry,qyu5ztbjt)rq s 5w

State Gauss's law.

  The charge carried by one electrcy16r ut8q. .zchdlc ;2djlj-on 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 char jhns9u(,b8gioo 2d4g3 lve w,ge of +2.00 mC. How many more protons than electrons does this d 2 wn(hbseooug ,8jl,3g4 vi9piece of plastic have?

  What is the charge on 1 w7 ,gvw4,cxk jkg of protons?

  An atomic nucleus has(e-a,vqcm zhu vkc;,o3ic +c8gqp4 )n a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separatemrx4f g0kvl odq:16d+:eop4yd by 1.5 cm, have charge values of 2.0 and -4.0 mC, resody06rgfqmd 1e :ox lpv4+: k4pectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge,vq.a/st oc. 7x and the force between them is 1.0 N. sox7tav . c./q What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are th ylo6v-g8u5k yey?

  The force between a (x:1 zd* a9jhwsr.k mq )wt:yw$30 \; mC$ 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 t,wt:y *my wsqp5gphzk+li ,mpee *8+5 hey are moved to a new separation oq,hpw ,+5 + emlpp m s:yek5*iw8gyt*zf 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are zo-; lz ov*vs,5so y7eplaced on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm,s ,ooz5s; *v y7vz-eol 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 +2.0 mC is placed wfrp ,fv 0sg1lhcp0/uyl sgi*q80 6z( at theq 1 zyvscs*8p/0i ,(fg hw06pu0rllgf origin, -2.0 m C to the right at 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 following positions: Q1 = 2.00 mC v 8oyj *(g2q ,amqxex2at x = 1.00 m; Q2 =eyxmqv2(,q *8j2gxa o 3.00 mC at x = 0; 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 k zb -i*),ohfhat the center of a square, and a second point charge of -Q is placed at the upper-left corner. It is observedo )ki*b-,hzf h 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 +qf vfzra56 c69 igcm.t36isv m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the sva.9tm 5cfz6i6v 36fcrg q+i 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, sqr 2 3pt)fc;vr rgo:-0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0p3g orvsc; qrf2t):- r, 0). What 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 oppjo bl2bndb/j i352 7.b ugq2f an equilateral triangle which meanj2b2 2 53b.7p j/blgubpoqidsures 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 ub8d5k xn.3r 7pf bt.g+Q and +4Q, which are separated by 3.0 m. At what point, on a line gb7rx..dp8kb t3n u5fbetween 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 amvb,,ype *+kbo gx;p*t x = 4.0 m. Where on the x-axis can a third charge be placed so the net fokvy x,o b,+mp;g**pebrce on it is zero?

  Charge +2q is placed at the origin and charge -q is place)hb;-2d vv s2qt:vu* o h/nuvgd at x = 2a. Where can a thir2 s2quvv/n u-*:vdt;hhbv)g o d positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of neazl)1ybp/ -a/ 3a ki3.0 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 gravity by the at6zaf: e -qyt/ftraction of a fixed proton some distance above it. Howf-a:e fq6tzy/ far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting t+ilsei:f p 81+1t lndehreads which are 30 cm long. 1delpt1ni 8+fe +lsi: Both are given identical charges, and 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 a charge of +40e. What is the magnitude of th o.3xm,c hij2vzj76ed e electric field at a dm7ce.6jvz2i, xhj3 odistance of 1.0 m from the nucleus?

  What are the magnitude and dire(4bdfkp y pd /vq00dns;ltwnyf0v;ed h7-/m1ction of the electric field at a distance of 1.50 m from a 50.0-n-n w( m01qvdb d;p0ye4h/vflfkp7 t y0 ;n/ddsC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitm)v5p9nctnuj:,b/r rah,y 2 rude of the electric field at the locationc p, n/vram2jr :,9rh5) tunyb of the test charge?

  A 5.0-C charge is 10 m from a s :ck ;( smfs9lklrqm20mall test charge. What is the direction of the electric fiel: s;( rs92lkkqfm lc0md?

  A 5.0-C charge is 10 m (5)fo*l vplwgs1i du mhl97 sil7or10rwv8i6from a small test charge. What is the magnitude of the fo7lv ml1s)r i0gwl1v s6o io w9p id*lhfur(758rce experienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Cg*wgq psbu 8;yeeh*31 and are separated by a distance of 4.0 m. What is the electric field at a point midway between thq1s ;*ebu8yhep*g wg3 e two charges?

  A 5.0-mC charge is placed at 5r7b tp qrkszeks6)0 :the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric 7btrs0eks q 6 r:pk5)zfield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark v/3lggqew3mz)g ,7*1kb oqagof a meter stick and a -4.0 mC charge isw)*oqlvgk/g3g 1z37a bg,emq placed at the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of:ds2 i5 oll 3b.jb+ecs +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the .+bj32lilbco ss:e5d electric field at the point midway between them?

  Three 3.0 mC charges are at the 3 ci mz apzj7s 7 7uai6px75*o*y,nsjothree corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squarejj7 5o ua7, 637pm nzsipc*oay*si7zx .

  Consider a square which is 1.0 m on a side. Charges are placed at the corn;.)cs4sufixr ers 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 magnitude of the elc.4 xsf u;is)rectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 m3 6cuk/)byw joC when it is placed in a uniform electric field. Wk y36ub wc/oj)hat is the magnitude of this electric field?

  A particle with a charg: x ll1rp(w9;phuruv(e 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 elect* pmaevj xsg(-0i 7ifl;0g+o pric field of 6000 N/C pointing downward. What charge must be placem;j-+f g0iexvg al*7 posip0(d on the ball for it to be suspended?

  A foam ball of mass 0.150 g uqbm/a 1 g-.nsz/nz40 5 tlotmcarries a charge of -2.00 nC. The ball is placed insgq0znol1/4z5ma - .usm/n bttide a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is the n w5,k648 tlba div leex4j+w/magnitude of th4ie+6a4 t enkl ,wv w8/x5lbdje electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a chargegc5fd ;f s4h6o of 3.0 mC. What is the electric field 6.0 cm from the center of the sphere?g h;4c5fsfo6d