State the law of conservation of electrk)ffgjwxx jzg:97 v)3ic charge.

  Is it possible for two negative chargezp8ci 2 1(pj3yn pw o.ej2wa,9ebs7yis to attract each other?

  Is it possible for a positive and a ncrpy/5poi 80uegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the 8bucnk9p ,e;b8u qg1s yz:o5s process the glass rod acquires a positi: encguyo1 9q,p8u 8z bs;sk5bve charge and the silk

  A proton carries a

  The model of the atom -g wyrb3p8z 3rshows a

  A neutral atom always hvmwrl)6 k dk8.as

  An atom has more ele..l+lhsz kizbadm6 5* ctrons than protons. The atom is

  Materials in which the electrons ,f*5-m2xdc--9jy lxag-kx20 puqehr.rq c k c are bound very tightly to the nuclei are referred9afr.2 -kccqx mp cu 20qxkj- y,*h-e- drlx5g to as

  Materials in which the electronsdk uw9mc n5qhv5,p:7 x are bound very loosely to the nuclei and can move about freely within the materialqk du55n79cpv,m:xhw are referred to as

  A negatively charged rod is brought near one end of an uncharged metal boe2pi(vd.m-- hvp. koar. The end of the metal bar farthest from the charged rod will be chargeh2-opv-omd e.ik.vp( d

  Sphere A carries a net positive charge, and sphere B is neutralmfhonbm *ugup+2h:, sxg zm,p w31j9(t8k nh5. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is 9 ojkn3bg,2hxf(ppw8ut1*, h:mg5 sm munz h+grounded. Which statement is correct?

  How can a negatively charged rod charge an electrol;85y ywewzs-eop rp )xww2-4scope positively?

  An originally neutral electroscope is briefly touched with a positivels;w 4vrrz 7u7oy charged gw7;u rrz47svolass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a positively cuxu1: wya./t uharged glass rod is helday u :1t.w/uxu near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and xxd5-sj h.ew92khf.j.u9 :s )mjlg n ethe leaves separate. Then a negative object is brought near the electroscope, but does not touch it9 ws -9jx s5 .e:nefdmx gl2.)jh.jhuk. What happens to the leaves?

  A large negatively charged object is placed on an insulatesfqnvp 60,v uzeq,o2(d 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 object. What is the final charge on ev6,qeup f ( nzqs0v2,oach ball?

  Charge is

  What are the units of the y6kkzd;we 4t ,Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distanck +y xj.r3j,1u v xn2hl8co+afe d. The first charge is larger in magnitude than th j jn h8,xy.r+akx3vof21cl+u e second charge.

  Sphere A carries a net charge and sphere B is neutral. They a qek0h(/x /cgnre placed near each other on an ic k (q0/xeng/hnsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract 9i xxul2lroujec4 - 7f*58 pbleach other with a certain force. If the charges on both objects are doubled with no change in separation, th2 *49exroubl j8l-7pfu l5c xie force between them

  Two charges are separated by a : ,r /mfbjdxndd +p-.cdistance d and exert mutual attractive forces of F on each other. If the chargesx, rjfmnd:d + bc-.d/p are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other withx xq 1z))mtcm+4u h8oc 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 their centers is + mtxucq)4)c8homx1 zreduced to one-fourth its original value? The force is now equal to

  An electron and a proton are separated by a distance ofym/vk.a rr 4i5 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electron?/ri. r5vkya4 m

  An electron and a proton are separated by a distance of 1.0 mq* (..nnw 2i f.izn6p31rnmfdxztgupq,0gl9 . What happens to the magnitude of the force on the first electron if a setrf,zi 2gn idq xnqw6gnlu* (p n.09m.3pz.1 fcond electron is placed next to the proton?

  An electron and a proton are separated by aiq s,llw0g9oi * ab1g. distance of 1.0 m. What happens to the size of the force on the proton if the lwi, g.1*0g alisqo9belectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a i2dntu 23uyc0is: q299svqkl 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 positi is: 0ndy3k92 u2uclqv9it2qsve charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral td3 (l.wwv4pkewp zq) +riangle. 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 epw.lp (vd z)+4kw3qwcenter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following ik 2 7len+,zoju 2-nbm wbnm8zm8.toy; s not a vector?

  At twice the distance from a point charge, the strength of thelx- : zzbktd5 pz6,.ug electric field

  Is it possible to have a ze;l3at1c:. /kxzvhmwr) qwh4 ,.fardoro electric field value between a negative and positive charge along the line joining th;hmcv fr41,.lrx ka awqwt/)h .3:doze two charges?

  Is it possible to have a zero electric field valo2+e,0x *dy w lmu*xocue between two positive charges allyu *2w+ d ,o0eomxx*cong the line joining the two charges?

  Electric field lines near ;c poh) cu7rv,n-u3 vepsitive point charges

  The electric field shown jaqjxruu+d:3x 9;6iz

  Can electric field lines intersect in free hb4o):u hdc6hspace?

  A solid block of metal in (.vgfid4bqbeiz *fo nj4k-.9electrostatic equilibrium is placed in a uniform electric -.g(k4iqbjdzfb9*v e .4iofn field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphe6, 4n qcc(f*hvs ;zoqxre of equal diameters are each given the same charge, the electrics ( xf;64qqov*, nhczc field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tab jp5q1s e;gdcg(e zd)nu88wa/ le in a region where a uniform electric field is directed straight upward. What can beze 8g/ wg5d 8qpn)c;ea1( juds said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equx macsnmmihna(2/u4sc lf3w5)8u m/9ilibrium near an electric charge

  A positive point charge is enclosed in a hollow meovy8jbzl- p3 p59ug ,ltallic sphere that is grounded. As compared to the case without the hollow sphere, the electl9 jug o5z8,lp b3yv-pric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriux t9-vb 7ic1sqm.

State Gauss's law.

  The charge carried by rswu7r0 hb.t5:rww2t one 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 chargizjzuqba)bhv:,9fg1 xa0 k0 6 e of +2.00 mC. How many more protons than electron:,g9x 0z0zqvija1 6)b b ufhkas does this piece of plastic have?

  What is the charge on 1 kg of p zk fw8aoz3lreaa9/al+t 0-*e rotons?

  An atomic nucleus has a chare)y4: it tsw.g5d godgkj rhbt2*;.:rge 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 anp4zk1mw(ac,jj 9kougi) e d2 ga23vi- d -4.0 mC, respectively. What i9j)2a d iepz,kmwuj 4g a2ovc3-gki(1 s the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second c5qu2: 68z tay (prqfsvharge, and the force between them is 1.0 N. s y2p(tqf6z58av:u rq What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them oeqd*/p ku:tr,w7 o 1/tis -quof 1.0 N. How far apart are they?

  The force between a vo./ncv+;x s2qw*xuw $30 \; mC$ 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(7-te mytd p 9uwej8y*-N force. If they are moved to a new separation of 8.0 cm, whapwdy9tue j(y7m-e8t * t is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cb4m;b 4maj -3nkf0dg+k l6uxwharge is at the origin, 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 electrosta;64-ukadnw40 g f +m lxjbbk3mtic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge obhf+f-oz/j wv;jqw 0 ,f +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 electros;+0 jovj/b -wwq,fhzftatic force which acts on the charge at the origin?

  Three point charges are located at the f *ue-z; jgp8g2-iek4hkfpq s0ollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q-0 8fgpjskh4 q2-gzp;i euek*2 = 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 at the centh1lovquoin z6ew 7e)r 6*j *+ner of a square, and a second point charge of -Q is placed at the upper-left corner. It i6qh*enl* vz)1u+wr7j noioe6s 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 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 = 5.0ac*eauwhir) )ej9 z.2 nC is at (0, 0). Whu)aw)ieahzr2 . ce*j9at is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q-8q)vqx,to+ gb) ;lc ym tkcr42 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0).vq 4tc o lk,tg);)by-rqx8 c+m What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at19abpwbvi /.: c(w(9gahkpxk the vertices of an equilateral triankc/ ia( xhva(p9pwb:9wk b.1 ggle which 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, which are separated by 3.0 m. A*6qwcomj58t /s jrqt+ uiqt 18t what point, on a line between the two charges, woqjt/j1q6 ms5 +ti r8cq w8o*utuld 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 s jnsgw2g/1yx lyy/, 0a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placedyls,x0ygwyg /n12 j s/ so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wt(u.bg ffc(al4f2-dco * y.s vhere can a third positiflcft(c by2gv uo (da-.4s. *fve charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3ro1u1fl +u5p ggsy.f) 6 edn6o6;xtqe .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 9k:k2oa1fo b vattraction of a fixed proton some di v1:aofko9 b2kstance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting tsif. 2emf1ge65f).qr5gx e bw hreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until them2b es 6)e. qffrgiwfg15.5 xe 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 electric fv4 l+mt qsrume*7/ )qoield at a distance of 1.0 m from thm)vm+qq7 eo4/tsu l*re nucleus?

  What are the magnitude and direction of the el6 .5ua xpid1g cq 67/zhva;oj 5h+qdsfectric field at a distance of 1.50 m from a 50.0-nia/uphvh5 fz7qo61;.c5a6s j+dqg xdC charge?

  A 5.0-C charge is 10 m from a small test charge. guy3t chd9::6,zb dyo What is the magnitude of the electric field at the locatiob o:d3:gycyt duz69h ,n of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What iv(zqy6pz0gtw w,3cw-s the direction of the electric field?zq yt zvp3(0wwg6-w c,

  A 5.0-C charge is 10 m from a small test charge. What is the m)rj8 dw;v0bzst ;r6u z8c zt)pagnitude of the force experienced by a 1.0zrj)0c 6dwstrpbz8;8v );t uz nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separa)hez7e7l 4nl hted by a distance of 4.0 m. What is the elec) 7lh7h4nez letric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter sdaw 2 b)5bo.fytick and a -4.0 mC charge is placed at the 50 cm mark. What is2.5)afo wdbby the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the z)t iq2,6 att 7(i s:spppzn3i0 cm mark of a meter stick and a -4.0 mC charge is placed 3zttqsipp ntpz(7 6 :)ia, 2siat the 50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mx, bgauoa5 02bC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at thxo,b u2aga50 be point midway between them?

  Three 3.0 mC charges arr4wp i /ipl:1xe at the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the :pr1p4iixlw / electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed yf 9 )ybf) f(3z06x;w ffbzminat 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 z3)mf wxb 09 yf6;yznfff)(i belectric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC 9r wceox xb2vl+ -zz:-when it is placed in a uniform electric fieldl+z:e zo-rcx-x9 w v2b. What is the magnitude of this electric field?

  A particle with a charge of 48zdb*.)s:po l51b(va ot d j3mqjfs)f.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 ele e2hno+r-a6ivasq0d7 . 8rumx05 badectric field of 6000 N/C point7oqr iu vdhm-2xa.ere50s68a danb+0ing downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placed 08* tgw ks0iex3oe0fjinside a uniform electric field, and is s ge0k wf x3t8*ejo0i0suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carri;32wm:fv 1 t ryudt*/jzrv0 gd6r c 4ek2,mrxves a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm f; m20dj,vy k xurzv/:v3c frr 1tdw 2*4mgre6trom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of ;qqz0 . chm4ic3.0 mC. What is the electric field 6.0 cm from the center oi;qhmcqz .c4 0f the sphere?