State the law of conservation of electr0+ka jis29gzj mt+w ccki;o5:ic charge.

  Is it possible for two negative charges to attract each other?+efu20:3kkzxrj *b kw

  Is it possible for a positive and a negative charge to attr jbx45wd ;xhmrnqzfc7::x n*)act each other?

  A glass rod is rubbed with a p. bas5x/ fi3vg;vg i/*3;q wmspdz)gq 8u9ji xiece of silk. During the process the glass rod acquires a positive charge and the siwv)qg *bp/35 xvfx .; iiuz9gisjqd8am ;g/3s lk

  A proton carries a

  The model of the atom showsi7f gto9pg h-5 a

  A neutral atom always hpzw1 acis 5d 0:(w,7pzow +,oczpy u*das

  An atom has more electrons than protons. The atl*yh vi q*:ta ;(lrvpl3pt 8j)om is

  Materials in which the electrons are bound very tightly898dh g eyid-u,wpav 57i am.s to the nuclei are referred to awi i9hdya m8dau5se gp7 -.v,8s

  Materials in which the electrons are boulk e5 pie)a3k,nd very loosely to the nuclei and can move about freely within the materi)5,p3akiee l kal are referred to as

  A negatively charged rod is brought near one end of an uncharged meta; ,js6a*ohfjv6,l*ge s ztlx5l bar. The end of the metal bar farthest from the charged rod will be chargja ,vh*z65ls, *jx s6;tlofge ed

  Sphere A carries a net positive charge, and sphere B is neutral. They are placf qxy6jp /w.p;ed near each other on an insulated table. Sphere B is briefly touched with a wirpw;/ jy pq6.xfe that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posw7s f,gs5j/ : kws. mynh/vv-;l kx:bsitively?

  An originally neutral electroscope is briefly touched with a posid4j) q4cnd7eqncm3d)tively charged glass rod. The 4mdjce nd)qc4qd3 7n)electroscope

  An originally neutral electroscope is grounded briefly while a pos1j/ub9gh/dz am 43 xksitively charged glass rod is held near it. Aftxu dh3ka jzm// s1b94ger the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leave r0t*hn* -hcums separate. Then a negative object is brought near the electroscope, but does not tmn h-*hu *c0trouch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A au 9rivaord 6hp074;cd8 j3ot0f-gfz 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 fodvrh-8 rj ocfipz93f0ag7t06u a 4 ;dirst 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 Coul1 srf4jwpx 5f:omb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The f: imu cu8 nt/:io3t(flirst charge is larger in magnitutf8 o(tumucl : 3:iin/de than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They aren.uq a6l15zmy-tcq 4 j5nxav 1 placed near each other on an insulated table. Which statement best describes the electrostatic force between them al1.tm nau6 jq-zqnv4 x5c15y?

  Two charged objects attract each other with a certful;z:(kby0 gu: o ;lbain force. If the charges on both objects are doubled with nob zu:ko;(b:l; 0 luygf change in separation, the force between them

  Two charges are separated by a distance d and :h.u: 7fw7hi(bhf 6crl awz:(lw)cg m exert mutual attractive forces of F on each oth: h:b: zm)li7 .uhhcwa(cwlgf(frw 76er. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract eachc1+dulcz i*+h other with a force F. What happens to the force between them if one charge is doubled, the other charge is tripled, +ccl+1i hzd* uand 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. Whvu,x49ei 7f:vymckai 0 gb- )gat happens to the magnitude of the fork-m9ce4vgyb)ix 0 , u:7g afivce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a du ; 1drt/p:h/ onvz*ohistance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron 1 upzvd/ o:o;r*hh t/nis placed next to the proton?

  An electron and a proton are separahq qu/6zn erg2e/ nn85ted by a distance of 1.0 m. What happens to the size of the force on the proton if the electro8qenur6n2 n z g5eq//hn is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a se ibu .*rxuxh6 :te/r1hc*cdfz9x0z -ycond point charge of/ 6rzue*xbruz x df1 xct 0i:c*.hy9-h -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 of the square?

  A point charge of +Q is place, c ka2+)9/3dzncr 7pmrclzyg d at the centroid of an equilateral triangle. When a sca lzp )zdmyrc/rk39c,g7+n2econd 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 placed at one of the other vertices?

  Which of the following is not a vect:pzl ; ivvp6b0or?

  At twice the distance from a point charge, the strengtr /sm mbxmfzzc2():ef2k* a,jh of the electric field

  Is it possible to have a zero electric field value between a negative ajl wlz g+6q jnf8 vj78 cra0-;ubho8o8nd positive charge -8;n or 8jlb7z l6a0h 8+ujcow8vgfjq along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive ch9lz tw k(7fx*ai+bf4oarges along the line joining the two charg4z(k*wt+7 bafo 9ifxl es?

  Electric field lines near psn/kejn4jzcj 6g0 / 8;usz6rtw itive point charges

  The electric field show)omb + 8edd1u+31)xjn)ky7udpcz ok jn

  Can electric field lines intersect in free sptsze3ir jv( 97p u0vg3ace?

  A solid block of metal in electrostatic equilibrium is 5hfqdc2e- x6d omg. glot 1s45placed in a uniform electri1floo-h5s5 etxggqm .624dd cc field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a h4p; (xcm1lbi1:e ik37oj j kfxollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and the surface i; o:i1(4ibpk17xkcjf 3me xjls

  A cubic block of alumitaqibm y2q6qz+h ; 87a muy u;qvq;(6jnum rests on a wooden table in a region where a uniform electric field is directed straight upmvqyq uza; 2+ym 8hi7qj6tu qq6 ;a(;bward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chaq:zv .r+((ghrur) g0b *uwa darge

  A positive point charge is enclosed in a hollow metall 13b: jge,*xbfzn4 mvxic sphere that is grounded. As compared to the case wit3 :b fb1, gxv4jxzem*nhout the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiesuw2n5 t20k) j ,rs9*dicnk ctz of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron; xl*4+mfd6tkd v+fix 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. cte0 l/bai5m7 fp:zfo1 z)yi3 How many more protons than electrons does this piece fiit5 m/1l3 cz obap):7fey0zof plastic have?

  What is the charge on 1 kg of protons?qc*0:g3gplln-s/ w; n mx7waj

  An atomic nucleus has a li /.u9vs*ngb charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1p 0gk8pq/h/b3lec gk /.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the el/3h q/k0egc k gl/bpp8ectric force between them?

  A 1.0-C charge is 15 m from aj2 +py4b wyw2:juz x;b second charge, and the force between them is 1.0 N. What is the ma 2pyj2+w; :4jybuzw xbgnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How f/ n*zx:l3o :kbw3v n2v4w loa x7h7tvjar apart are they?

  The force between a 8frv kyioqjnbz9:v 5.49r2ra$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, i5hvn60*f umo0 0pat dtnitially 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force be f0td06a umpnhov0 *t5tween them?

  Three identical point charges of 2.0 mC are placedi 4*.b:hhhceiju bpsy 6, n50n on the x-axis. The first charge is at the or cp.i nj*uhs5 6:,i4heynbh0bigin, 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. A charge of +2.0 mCm/to;p /*pcp if-oak5 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. What are the magnitude oicao-;5* pp tp//fkmand direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following position l4djziw (q2+js: 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 magnitude of the force on the 3zlj(2jw iq4+d .00-mC charge?

  A point charge of +Q iz5/dfn/ers e(o q)yo0s placed 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 that acts on the center charge ers/ 5do(/ ozeny0 )qfif a third charge of -Q is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, f reoywz1do36;;m ffw)hpn/10); Q2 = -1.0 nC is 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 nC1o w6/fd n z31fowfrm;h;pye) 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 ats9w1sh. ccd/e (0, 0). What is the direction of the dc1/.h9cs s ewnet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equila7ypal zyb.x3 ebs)u8+teral triangle which measures 30 cm on a side. What sb buy+)py87z3.alexis the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of ..)mtgw9m. eb slp*bq5e7scqxj, y7 i+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to pqq75gcxj9.m s,wbbpies . elt*)7.ymlace a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at bibhp ;9rv) 2qt/upq0the 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 iiubphq; )0/2p qvt 9brt is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Where 4uxzinx *39zw+kl nw,can a third positive charge +q wxu xlkz+4i,9 nw* nz3be placed so that the force on it is zero?

  A copper penny has a r) jp:9q. pwth93c9b n2;vi5 wclwnm umass 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 t/08q7,i eo)e f qfevjqhe force of gravity by the attraction of a fixed proton some distance above it. How far above theeq jv f08efeqq7oi/), electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting 6wo7 q;cdp 60v4zajlf threads which arwfzd ap 4o0q7vc;l6j6 e 30 cm long. 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 *9 ilb2ypje-n*ro6j.vk x7 1qmhncl 4nw( x9b+40e. What is the magnitude of the electric field at a disy.o7jvh nn9(x p*bxnjl*lw4i bcmr12kq 6 9 -etance of 1.0 m from the nucleus?

  What are the magnitude and direction ocv-m: oi a , ncz+9j/vvkr/zqcy oc9)4f the electric field at a distance of 1.50 m from a 50.0-nC chargeovvamc -z/ 9qz/kj + oi9y,vcr cc)n:4?

  A 5.0-C charge is 10 m from a small test charge. Wha6hnqa-um* tds a2g+a :t is the magnitude of the electric field at the location ofs+: u-2mq dgn*aatah6 the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is th9 jvl2wi4 le7re direction of the electric firv4iwl 7e29j leld?

  A 5.0-C charge is 10 m from a small test charge. What isnb 3 z:*wvmsjwn9)7gzj ,pf)b the magnitude of the force experienced by a 1.0 nC ch3)jvwm,b):9wfz*jn s b 7 pzngarge placed at the location of the test charge?

  Two point charges each have a value of vc1*r7mktf*n. )mf)u x(c0gmf p*vcv 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the ttgm xn*v(fc**vf mc7 v)1uf ).pc0k rmwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.+o0dtrzgn 4(q e,pq t;0 mC charge is placed at the 50 cm mark. What is the electric field at the 30 c0gnor; +et,( qdpz4t qm mark?

  A 5.0-mC charge is placed at) hroekiv y3*eof(snt; /+ms. 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 two charges is the rn;se sik)h3to/o.f( vem *y+ electric field zero?

  Two point charges of +3.0 mC anndesas:v* r 6+d -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric ed*nv r+6ssa:field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 7gc2ltkia12)e o/4 r0dflre pm. The last corner is occupied by a -3.0 mC charge. Find the electric field at the cegr2ekl1pf/0 o aetdc 274ri)l nter of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at )i,u j3et7cvj the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, tu 3ijec)7j,v 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 of 5.0e7clkr 2y 7:fj mC when it is placed in a uniform electric fielrl fjcyk72 7e:d. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC 8) dl1mxp h,7caf a-(c s+uwkgz9jfk .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 plac+oyf v0tk0l h8qglb 4.ed in an electric field of 6000 N/C pointing downward. What charge must be placed on the bakhfo0gl4t8 qv0l +y.bll for it to be suspended?

  A foam ball of mass 0.150 g carqgn46coqqjhh6 tdq 8 * l3so20ries a charge of -2.00 nC. The ball is placed inside a uniform electric fiel 34q g606 qht2nhds*o8oj qlqcd, 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 carr eq2r hb1d3/u0zwkr5.1s nle6g j0ldeies a charge of +2.0 mC. What is the magnitude of the electric feq b1d 500ge zrdh.wjlk62ure31l/nsield 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 thffo o ito 4r0-yjo 2g6shf:z.,e electric field 6.0 cm from the center of the sh .oj4to :,fozof2s6gry-if 0phere?