State the law of conservation of electlsayj4d+ *1 ptric charge.

  Is it possible for two negative charges to attract each m eej f2 eg(6d,,bcn6oksj;s:other?

  Is it possible for a positive and a n8.4ngf5 w6bhywq * jpmegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. D hevke/,guq zpw;bnc.3z8h 6a ;z 2g-auring the process the glass rod acquires a positive charg;cgah.vp6kgbez-za 8 e3zun2,h / qw;e and the silk

  A proton carries a

  The model of the atomda/n7 hkrrw.m.423 cbouu. uhrp7;opn w o:p; shows a

  A neutral atom always hasei zq-7bw).ibu r1sq 4

  An atom has more electrons than proq1a lsdyx5g) *tons. The atom is

  Materials in which the electron9n/e 56e xiysws are bound very tightly to the nuclei are referre5e6nwi9xye/ s d to as

  Materials in which the electrons are bound 7f7vvque5m0bx(l a q-very loosely to the nuclei and can move about freely within the material are referred to a0a(qbvvfu7qmx le 7-5s

  A negatively charged rod is brought near one end of an,pdo zni(o9z/ze+g / o uncharged metal bar. The end of the metal bar farthest from gze(o i9/zn+ o/o,pzd the charged rod will be charged

  Sphere A carries a net positive charge, and sphere h6f20f+wn u sfB is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wireuf +w 0nhff62s that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positff7 *5:k.blgwz4z*ffh+ zti zpav 9p8 ively?

  An originally neutral electroscope is briefly touchedbt4wjw pu)n0 ( with a positively charged g u)0(nj wwb4ptlass rod. The electroscope

  An originally neutral electroscope is grounded briefly while 0 ti(jxi7p *5kiqiifc83i+9uc k 6wtpa positively charged glass rod is held near it. After the glass rod is removi ipijqp75(*6u 3fix0t+8kic9 tc k iwed, the electroscope

  A positive object touches a neutral electroscope, and the leaves 9yb9cqwo:yg+ t759y (+ kszvsa2hmz pseparate. Then a negative object is brought ne(zp2 ya vm+yoh+7tgbc5yq9:99skws zar the electroscope, but does not touch it. What happens to the leaves?

  A large negatively cha i4m8:tb 8rkcmrged object is placed on an 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, strikei: ktmcr4m88b s 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 Czzj vm3a1ej :hn5q-r9oulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is l dqddnt+r6 p/+arger in magnitude thanndq r/+6+ddt p the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are plact8pzao -b6u t0ed near each other on an insulated table. Which statement best describes the eluzp -to8at0b 6ectrostatic force between them?

  Two charged objects attract each othervk hs212j1jn8kwysa ):gb/de with a certain force. If the charges on both objects are doubled with no change in separation, the force between /1n by28dvekj1 kg 2ss)jw a:hthem

  Two charges are separated by a distance d and exert muqm :)/ .o.kz9mntzi yqtual attractive forces of F on each other. If the chanq t /m ).mi.qzzyok:9rges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrac.yxi2v oq m4z1t each other with a force F. What happens to the force between them if one co v2.4myxqi z1harge 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 protorz bb4 11dt+cqsf1y( rn are separated by a distance of 1.0 m. What happens to the magt1rb r+cbd11 syqf4(z nitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance o9 ;4e.e l-d7ioj a0z yn2hyg leleu zg69iw0f,f 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed next to th6,e- 0e2eynlw l.g99eiz0g4;ou zli a7dyhjfe proton?

  An electron and a proton are separated by a distance of 1.0 m. Whablpk h8(n5rmk owx( 5s4e43l dt happens to the size of the force on the proton if the eorp58hdm 53ksbl4kew 4 l(x n(lectron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. Whenu qs/46fx7u y8lou -ls 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 squyos us/8x7l64 qluu-fare. 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 placed at the centroid of ak;z l6fm-y+/nn+mpz6 vm tu9nhbjj (4n equilateral triangle. When a second charge of +Q is placed at on/+m6k p+ ymnbv-zzm tj 9(6;lu4hjn nfe 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 qtcid6v (i-4a not a vector?

  At twice the distance from a point charge,vx t eaf3p-e)) the strength of the electric field

  Is it possible to have a zero electric field value between a negative arh .-y i6lheh3:*ua tgnd positive charge along the line joining the two e hl.urh: gta*63 i-hycharges?

  Is it possible to have a zero electric field value bei// yps 4n-n6mhifgst-g u/)- rsr8vmtween two positive charges along the line joininyr 4 p-/msgvirfs/t)i hngu8--6s n/m g the two charges?

  Electric field linesj ( ye0z/)pgsc near psitive point charges

  The electric field shoeer/ke)5d4x w wn

  Can electric field lines intersece. 8kg0dos ix(t in free space?

  A solid block of metal in electrostatic equilibrium is plasc,( nqh.7zkvced in a uniform electric field. Give a statement c csnh7q(,.kvzoncerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere 5h8 2aji;6yu j2cagdn pfbd4aw67tf * of equal diameters are each given the samehwa n4 abgaij6y;62 dfudp*tf2cj 758 charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region a1hkxcx05 pvgi1q0d +ol o*e1ugv1 n2 where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top surface1gq5e p1uhd01 vlv0x oaoc* n2i 1g+kx?

  If a conductor is in electrostatyui+ucrx 2 q;n:kqzc2q,8c:a ic equilibrium near an electric charge

  A positive point charge is enclosed in a holloosi 3 4 s,9r:dcc a9ktyuj-rh;w metallic sphere that is grounded. yh 4;rc-3ik :9jtdos,9ucra s As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of et66qm ) drf*(o;ytboconductors in static equilibrium.

State Gauss's law.

  The charge carried by one egg vpv1rpmlxyph,6xkz ;)( s x* *j5.mlectron 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. How manyr,kz nf hhcbjw 12o1c;e9u76 y more protons than electrons does this piece of plastic ,uf7n1ze9br6 ;woky jc1h2hc have?

  What is the charge on 1 kg of protons?ckr ufaa8m/9,r:gbf q:w(5wg

  An atomic nucleus has a charge o/0cn ggo9 xzskm q8;,lf $+40e$. 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, ml57jcuwj rd 3 io0m,:k7a3yr respectively. What is the magnitude of the electric force jkm3uawic 7o7lrmdy:3 r5,j0 between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwejvp9(lxju5 o5ua(iw e4 t*q +den them is 1.0 N. What is the magnitude of the second charge?*54vq5pxidlu u(a j(+ je9otw

  Two 1.0-C charges have a force between thecj9rtwu/)l2i5)xs)v.j s mham of 1.0 N. How far apart are they?

  The force between a ski67 xgdn. 9bo6w9ot$30 \; mC$ 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 for;p;*qhem 7nfqu4 kh4 nej,u -rce. If they arjeu*qq4r- hpehm n;4 ,;u 7nfke moved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2j9eaabs4nbr) oi8 t fg8a. j9.p5n x,o.0 mC are placed on the x-axis. The first charge 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 thee4sn 5ooj8fjt9 ., aa iabxrg. p8n)9b electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axbmz5c/ / 96k 3mj;mq:luc*d t2ddnkkp is. A charge of +2.0 mC is placed at the ori mz 25dj36/cmmn:/b ku;k dc9ktdplq*gin, -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 locate-)y ipis.l*70v lpqyfj t*-nid at 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 chargefii0s l7.npq-vl* jy p- *)iyt?

  A point charge of +Q is placed at the center of a square, and a second point frs+ 89 g6uy3s p.jkgrcharge of -Q is placed at the upper-left corner. It is observed that an electrostatic force of 2.gyp sk+jr3869 sf. gur0 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); Q38 ok)e/f7 xozr = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 57 exok8)or/fz.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at2agmeq, 9h dc7d( k1mw (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What i,1k qd g 2(m9hwed7mcas the direction of the net force on the 5.0 nC charge?

  Three identical charges of, p.r;g)ys-1nmb*cta d oli y9f4:nrl 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of )l r sb4n:ylti-. pd9ag;cfyo*mrn 1,the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separ0dooy8.c1(db/ nagm ppv sp2,ated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge of -Q such 2p08c 1 pv(ns,b dpd/om ogay.that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-kf dh)fl61;kij4uq h/ C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zero lf; h/kuf h41q6jkd)i?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. n.2)wsv)4 z,ts en my)8t nxawWhere can a third positive chargen )snatz.4smyw v,nxw8)te) 2 +q be placed so that the force on it is zero?

  A copper penny has a mass of h/d:r5 y+-7 fouxsfte3.0 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 attractionprv 2ux+k ,cfq(/67vo*h nht k of a fixed proton some distance abkh* khr7, vo2u(6 qnfv c/pt+xove it. How far above the electron is the proton?

  Two 0.20-g metal spheres ar tqeer 9bf)guk87c0w7e hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and thw0g 7f98qc 7r)keeub te 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 +4017u1ptic7j)bqm d+ -n vhzotils(9k 2e. What is the magnitude of the electric field at a distance of 1.0 m from the nuqt7n-k2pmz1 tod(1u l bsj hc +ii)7v9cleus?

  What are the magnitude and direction of the electric field at a diszcot-h)50b8 wjgp +chtance of 1.50 m from a 50.0-n5 8 0+-wc bp)hoczgjthC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitud l0h()8og-wjph7a am m /gx3wf/ ox9cve of the elect08aol j9mhxxwwm/oaf g)ph/ 7cgv(-3ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is jo qub; ;gkubuzhs .7tpk 7.6+the direction of the electr. uz+k7tq;;o gbjs up .uhkb76ic field?

  A 5.0-C charge is 10 m from a small testbia+2nr. ta6f charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at tbart6f .+ i2nahe location of the test charge?

  Two point charges each have a value of 3.0 C and are se +q,pr*rh)xt,ddflyx2b d (y 5parated by a distance of 4.0 m. What is the electric field at a point midway between the two charg5l y ,t,+h2fq ryp(br)* ddxdxes?

  A 5.0-mC charge is placed at fpo )afw9lbzna74*x+ ,kxz 5 ethe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is z7,n5+ bofxw9e*)klxfa z4pa the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a metjo) pr6z9i-rmer 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 elecozpr9 -rmj6i)tric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x + a/k2huwat0. u,usa8jwr b f*s:j x;b= 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between the2a *abu0w/,; bstkjuf8j :su.h+warx m?

  Three 3.0 mC charges are at the three corners of a squah2v3 y 4amix pxib/a09re of side 0.50 m. The last corner is occupied3xa 0iib2a v49x mp/hy by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placb7 2yk btnr )zc66/zlfed at the corners of the square as follo 2/y 6bc7zbf6t knrlz)ws: +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 of g/lks7 s-ojyf5p 8:pc5.0 mC when it is placed in a uniform electric field. Wha:ol 5j7k-g p8psc yfs/t is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass of 7y f( cc:vxvs5$5.0 \times 10^{-3} \; kg$. 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 electric field of 60w 9iwdkj.ef ap k4*k7400 N/C pointing downward. What charge 9k4ipkea wwd47.j kf* must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g car 7zub l ,q.d2;wa,gim*elmr 9gries 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 gz,*qlg,7 mle 9uaib.mw;2 dr the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is theo j83bo zb5/ejz2q*ih magnitude of the electric field 5.0 cm z85e qobjhi/2zb3j*o from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.ef ta ukm.(wbs*t(dvp- :rgi+89 o6ly4q2nqw What is the electric field 6.0 cm from the center of thee.qnwik- ws 4:mbvfoadrytgt(q*6( 9 2l+pu8 sphere?