State the law of conservation of ell36 degon5sdpj v)s/14se ,u5ba8dqgozt ;u) ectric charge.

  Is it possible for two negxqe(3m1*lb ckative charges to attract each other?

  Is it possible for aotro;,nfb0 4a positive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durl06pyxb9h; efing the process the glass rod acquires a positive charge and thy;b9plxh60 ef e silk

  A proton carries a

  The model of the atom shows a-o.j65kop (3sfx,bsn ib58 exfms ,my

  A neutral atom always-5pn ..qhfu ug has

  An atom has more electrons than protons. The atmtvyt)3l 9 siz;i2lwq,j;ed 3t7 ln2 rom is

  Materials in which the electrons are bourw zra2 pa b;zt 5/vt.9qo1m6rxps7;mnd very tightly to the nuclei are referred to 62qrr ;wsv ;xo mpt z bra1ap97./mtz5as

  Materials in which the electrons are bougmvw:cv7h/)3x: cmm o nd very loosely to the nuclei and can move aboxc3:om /h:v)cwgmv7m ut freely within the material are referred to as

  A negatively charged rod is brought near one end of an unchhixazw u6o:s /,ttu(,arged metal bar. The end of the metal bar farthest from the charged rod will b/s(zut ,t :6o u,hxaiwe charged

  Sphere A carries a net positive chq( 4: :e ejtd ww:jjdj6ae1wg8arge, and sphere B is neutral. They are placed near each othjw1wjg :8j(d4eq e e da6:j:wter 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 charge an 2ophb, 5x0xh delectroscope positively?

  An originally neutral electroscope is briefly touched with a positivel2:n a,7trko;b gvx* fhy charged glass rod. The eler b2h,angkox7;vt:f* ctroscope

  An originally neutral electroscope/rpsjd :yya6hgd - b.0 is grounded briefly while a positively charged glass rod is he6 r j-:gy/by p.0ddsahld near it. After the glass rod is removed, the electroscope

  A positive object touches a g h4jr6qity/q2j) w*+h(arnv neutral electroscope, and the leaves separate. Then a negative object is brougyj*i atqnr j)2h vh+4q( 6wgr/ht near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an jk (n gc x);pa1v5chsm.ow8,+k)ehnx 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 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 objecahs(cnc1 p;ho+ 8 mngxw )v,jkk)e5x.t. What is the final charge on each ball?

  Charge is

  What are the units of the Coulomb constantr dax0wq/yt (p 5 hkn2:hg31bt $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first chaewta7c9 k d:6sb5wrw )rge is larger in magnitude thbs)9k wdca 6w 5w7t:eran the second charge.

  Sphere A carries a net charge and sphere B is neum l 78fd81xew rix0emx0 sd+f,+7gl aitral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force0x,+xg8+x i1sew dim7ald l7 ffr0e 8m between them?

  Two charged objects attract each other with a certain force. )4sypoa-eyp( If the charges on both objects are doubley )s( -ypap4oed with no change in separation, the force between them

  Two charges are separated by a distance d b t:jo;t(heeue(8zk 0and exert mutual attractive forces of F on each other(thee0teukz8;:bo( j. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. 9ecug+ .btg0)wd 9 mfnWhat happens to the force between them if one charge is doublm).tfw+e9ugncg0 b9d ed, 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 separated b6eb6nhbgs ;4g y a distance of 1.0 m. What happens to the magnitude of the force on the proton if6s4 hb gngb;e6 a second electron is placed next to the first electron?

  An electron and a proton are separated by a ld0cu:lk jz1- 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 the prjzd -1ulc0k:loton?

  An electron and a proton are separated by a distance of 1.0 m. What acz tk2h,s 7/-fnxl0kza.7 pl happens to the size of the force on the proton if the electron is moved 0.50 m-la7k 2znc .pk,ax/thl7f s0z closer to the proton?

  A point charge of +Q is placed at the center of a .06w1 pjye hbwsquare. When a second point charge of -Q is placed at one of the square's corners, 6whw ej 1yb0p.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 pox8r1xi cpfu9(;ll d6laced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forl 69x(fxo ;rpiudc l18ce 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 vector?2urxf ff5 xp3veoi1p h5+yh9 7

  At twice the distance from a point charge, the strength of the 9 w)tqmw a3eq1(69;mlspsgv l/gg3ah electric field

  Is it possible to have a zero electric field value between a negir 3bm+civ-j+f+b guc rnv/1/ ative and positive charge alonmf-r +bi ujg31bcr cv/i+/+nvg the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargesa waz)z.k/.v 9w:bvrz3, h u4fd6xxhk along thxkh fza/ )wa.vhz,9z bv63u.d4rkw: xe line joining the two charges?

  Electric field lines near psitive point cm.u3xik4+:fo: ll obyharges

  The electric field shownh;lw -rhq*5y 5tcb g7b

  Can electric field line z/3) vrdiivffdl+yen( t-l9-b+ f1ios intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform+9k(sbsfgyp7 k6le.o:b- 8jdnw 4m hk electric field. Give a statemgkkmenb wf(so 6 j7.k: yp+8b94l-shdent concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equalwar(xk*j(y g. diameters are each given the same charge, the electric field (E) midway betwxg(w*a (kr jy.een the center and the surface is

  A cubic block of aluminum rests on a wooden table in rwz4mu( nf waz;hle297q2 s2uwzi t (/a region where a uniform electric field is direr(; wtw(ue qw4z2/zfu97nhz2mis2a l cted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near ang/di haf 9 a(.xb/qkk) electric charge

  A positive point charge is enclosed in a hollow mex opp(man8.d/d:rzh 9n2/6d wv ctet1tallic sphere that is grounded. Adn91zx ct: hp ew/8davpmd6n(or/ .t2 s compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducte) rvy)+:vgv wors in static equilibrium.

State Gauss's law.

  The charge carried by one3*vudku8 +zy e 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 vb- wm;9,hyukays s7 d6n2l;b mC. How many more protons than electh ;k aw,9s-l2y6ybsvnm;7dbu rons does this piece of plastic have?

  What is the charge on 1 kg of prot gp :t hm5rbife6c45*dons?

  An atomic nucleus has a ch*42i yhkgp;s/1 l hzvtarge 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 a(rhvn o-qe x:ced9u ,9nd -4.0 mC, respectively. What is the magnitude of the electric force betweene dn9v9qh r(,c:- euox them?

  A 1.0-C charge is 15 m from a second charge, and the force between them isf4b1pkmloy +: 1.0 N. What is the magnitude oo1:myb fl4 kp+f the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hb4s dy+g0:ws3sf -cgz ow far apart are they?

  The force between a h :ppvzu:o 1n0ud4 0tv$30 \; mC$ 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 foio56 pz-r20i6 h)k6occrq wcaoh,t k;rce. If they are moved to a new separation of 8.0 cm, what is the electric force be ooc,zh6 i2;5r khaqpo-t w6rc)c6 ki0tween them?

  Three identical point charges of 2.0 mC are placed on the x-ay dpg8zwi lta+ 6u*10bxis. The first charge is at the origin, the second to the right at x = 50 cm 6wb*t pzual8y+i0d1g, 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 +ch3em ,vvi p5/2.0 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. What are the magnitude and direction of the electrostatic fori5cm,ve v/ p3hce which acts on the charge at the origin?

  Three point charges are located atf m9 a86p8 eaugns;,xs the following 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 the magnitude of the force on the 3.00-mC chanxp9 as; 8a sgm8,u6ferge?

  A point charge of +Q is placed at the center of wb4-q;9 2ywtb,wi puqao)0 qz 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 ma bpuqo2-;i0y9aw,q4tqw z b)wgnitude 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- b5fkfzp(4;mk .hr ),b:e+e ufkcmoa m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on t (p5hfz-rff : ak+b ok,b)mm;4.cu eekhe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m)tho/pua2ptwox.g9):/ a ::ox lrxz 8c; Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the x2/:wtc.x p a zg89la :oopu:hr)/x ot5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vfcc6zen: 78noertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic forc 7e8c zo6:nfnce which acts on any one of the charges?

  Consider point charges of ptidgqep b44s0 ;0tfnyt4i 2,+Q and +4Q, which are separated by 3.0 m. At what point, on a line between tt gy4ip 2tsb e0p;4i0f4 tq,ndhe 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 ori/accwm. +g-2bc:cp 6 -wk-y jwzjuv i*0g jtn-gin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge bzj.twjp+n-6uic/w*20vycjc-g-b k w c:ma-g e 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 r(9))foyga vqui 9pk:can a third positive charge +q be placed so that the force on rk)y9 9:igvp(qfua)o it is zero?

  A copper penny has a mass of 38ye swgaw 7ml du)x5f 3 (9.f(ara9rev.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 attraction of aw(8n m* m:vhtye/f2 js fixed proton some distance above it. How far above the electron is th*m(/hwnv smy:8t ef2j e proton?

  Two 0.20-g metal spheres are hung from ab/xrq9t(y7h m cb1fbq58 eo pi 7ej,5d common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion fob f7c7q9peihjyq81tre /db 5 bomx(5 ,rces 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 the adhk(x-;7 z 6te0 w hz*mqs;avelectric field at a distance odvzm wh;(0hzx-a tq ;e6s7* akf 1.0 m from the nucleus?

  What are the magnitude and z+vi,h/: x3i.yo8 7zwdpu wgrdirection of the electric field at a distance of 1.50 m from a 5ruo3pwv+z:yiidz / xw8 h.,7g 0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 7 px 6yqzjyown56y i/5elect jnyzw 66 i5yy/qp57xoric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whnmub d5a l9 4we/je71tat is the direction of the elect5labmeew 1 4 9ud/j7ntric field?

  A 5.0-C charge is 10 m from a small clcew a 6n+/u+test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge 6/ ulnc+ac+we?

  Two point charges each have a value of 3.0 C and are separate* ,.fleyyw6a. us9cof d by a distance of 4.0 m. What is the electric field at a point mide 6,ycf f lw.y9a.so*uway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter fc7f nd(/z4 a:zeyy5 .tya ks3g8il8pstick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field agc.y:pli8n7 3ztz/45a fydfs8e(ya kt the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mara .u2u(d2anl ,1hgryik of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining t a.r12i (lung,uahdy2 he two charges is the electric field zero?

  Two point charges of +3.0 mC and tu* :ph2jik 3wn 5+1vyir*jei-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway betweeneki:y3wj2 n ih5vji+ *r*u1tp them?

  Three 3.0 mC charges are at the three c5hbn+v(;- .wb(1ohpjm8pgybrs he p.orners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electr8h5bbwg(pvmh r+;yp.-( h n1 jpbeso.ic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed atzwm72w,ym,l y,li s w/ 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 magnitude of the electric field at the square'sz,ymw,, isl/7lym ww2 center?

  A force of 10 N acts on a charge of 5.0 mC when it is placxf m*(r-q20 fcw5 enjced in a uniform electric field. What j *cef2nfmwcx5(rq-0 is the magnitude of this electric field?

  A particle with a chao6 g2o.xg:7i*:*dy dkobsdzg,v+ sn rrge 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 a3arqi l :,jy*3br tk5t;r* pwmass 0.120 g is placed in an electric field of 6000 N/C pointik*a3pl3i5t rt:*a rywj ,rq;bng downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 09e-/ 2dkzpq 9jw+i1t sjqx0k uwwh;3h.150 g carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the m x+ z 1qu;/ hk0ke3wpthq2j-sw9i dwj9agnitude and direction of the electric field?

  A metal sphere of radi ghq-c:f (2my5v4f8o6c zf lueus 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric 6 2mf-cof4g85y u :chvelqf(zfield 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.s0gak(1n q5tx .5ah4fxa xo*h 0 mC. What is the electric field 6.0 cm from the center of the spt 5xk 0*( 1h.s5gaohaxn4qa fxhere?