State the law of conservation of electric 23npfh7rhd h8 zp,4cmcharge.

  Is it possible for two negative charges to attra5 fw**uazbu7 sct each other?

  Is it possible for a positive and a *e;8,g g;wreljp,wk4b pus luw2g .9nnegative charge to attract each other?

  A glass rod is rubbed with a piece of silk. (y xm ((u,lg ahj9v14,nlcqw tDuring the process the glass rod acquires a positive c4uyv gaw (m9h(j,c(, nt ll1qxharge and the silk

  A proton carries a

  The model of the atom showsfx smrv( 80)jxckfvmp9;y v*; a

  A neutral atom always h/0 qz9n y)ckgzas

  An atom has more electrons th;jk 7nh4vzp0 uan protons. The atom is

  Materials in which the electrons are bound very tightly to th iu+zsk4w 05:sgz .iyie nuclei are referrw5i:sy0 i+.k4ui gzzsed to as

  Materials in which the e0px 3a0oiu:+plig n+(mnxv9 s lectrons are bound very loosely to the nuclei and can move about freely within the materialp pnixu9 mn(+ g 3:o00aivxsl+ are referred to as

  A negatively charged rod is brought near one end wwm02fh o. ibt h81cg0of an uncharged metal bar. The end of the metal bar farthest from th8wghof 2wt0hc m1ib.0 e charged rod will be charged

  Sphere A carries a net positive charge, and sphere B u+,j.ocwco/ np2p xw:hy2kh:is neutral. They are placed near each other on an insulated table. Sphere p h uw:o:/y,2.chkw2xp+jno cB is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charvcjs-now1 b2g7a 0vuz 8k3:nmge an electroscope positively?

  An originally neutral electroscopgdk( mf/e8x rpb2e ee0. wgq94e is briefly touched with a positively charged glass rod. The electro/(rxq42ge emde8fwpgk9 b. 0 escope

  An originally neutral electroscope is grounded briefly while a positivel3wap-ie-1/ n32c9 )bnox3hcwlynl tny charged glass rod is held near it. After the glass rodnwnh1it nl93 )3 2 bxl-o y/-neaw3ccp is removed, the electroscope

  A positive object touches a neutral electroscope, and the fp3*1/z ,i.gglk is9asjwbp *leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaw jk,bp s .gli*1pazig9/f*s3 ves?

  A large negatively charged object is placed on an i-.2nd8csb c :6:b z9m ndejyfxnsulated 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 firsteyx 92s-:.d6fbn:c z 8dm cnjb 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 ( sc8x+wjl3oc:vtes .g mqv2/the Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separate ,cy*1(r /mq utwb)z5fqllm+ed by a distance d. The first charge is larger in magnitude than the second charge,lm/+ufm 5 )e rqtq*wz1y(blc.

  Sphere A carries a net charge and sphere B is neutral. They are plm.ja2sg9h. r9 f*ipra * r8gflmvg7+aaced near each other on an insulated table. Which statement best describes the electrostatic forcr.pm.fvarj a+igh *s 7g9m*lg 8 29afre between them?

  Two charged objects attract each other with a certain force. If the charges on 8xi c.jc*800nadfmlw5iz6 oz both objects are doubled witc8i50 jzm. wz6dcaxo i8 fl0*nh no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual at .dy7a)6 bi 72tcxxd a az24i5hjr9gwxtractive forces of F on each other. If the charges are separated by a xxgba2 )42 iwaiz75xayjtr .dhc7d 96 distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a forc4nhcx - .y4t q/e2mdip vb8 mh8bb5i9qe F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distain8d9bqix y mh45qht-4 vbmb/8e. 2 cpnce 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. What t1+h wqzxb j0awi.x/2happens to the magnitude of the force on the proton if a second electron is placed next t a+2zq/ whwxj0x .1bito the first electron?

  An electron and a proton are separated by a distaq1p5k 0;qk8phv 8 s(4 hap8xf njoyg,jnce of 1.0 m. What happens to the magnitude of the force fh;hga 8vkq,pk s p48o0jn8qp (jx51 yon the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated z v/rgaa+v. *tby a distance of 1.0 m. What happens to the size of the fr.av/t g+v* azorce on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secondtm3nnxzy( a ah448j5 j 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 positive charge at the center of the 4ajh3m 4n( ajz8x tyn5square?

  A point charge of +Q is placed at the centroid of an equilateral triant w2gedy4 iq4 6jzv25rgle. When a second charge w5g6j q2vye iz4r24d tof +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 (+ -i z+zh7nfm, r/uscrdm+w uvector?

  At twice the distance from a point charge, the strength)b(j /bho+ 9uz iqjj))+b/8 ysf7vwg,etkspe of the electric field

  Is it possible to have a zero el * zuu1y0-neoo+bhr/yectric field value between a negative and positive charge along o-z0on yh u+ery/u*1bthe line joining the two charges?

  Is it possible to have a 23g tpz7kl6nxyrn,(obn2g*s+rjs -l zero electric field value between two positive charges alon( l2g r7prso6*n2xjblnzk nsy,g +-t3g the line joining the two charges?

  Electric field lines near psitive point chargem.9yunqt s blb*6p* c6s

  The electric field show-cj :cxe8e: ndbpj9r7n

  Can electric field lines intersect i9j0g* cup+d tf8 ;rmq8g8hywun free space?

  A solid block of metal in ele ooh)w0 b9wl0:lr+ bkfctrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electrico lrl:w)+hwob kf009b field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eachp62ha1fcj8 mfr( ) ved given the same charge, the electric field (E) midway between the center and the su j( 26pah)f8vm1fc edrrface is

  A cubic block of aluminum rests on a wooden table in a regio0a; fg;9;tinvjb*rxkol 6 mu5n where a uniform electric field is directed straight upward. What lno6u0a; 9k itvr5x*mfj bg;;can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near aok 08(kv9vbfb cynv07n electric charge

  A positive point charge is en7c o1.3zkpir jf:w07bysr2g uclosed in a hollow metallic sphere that is grounded. As compared to the case withk7ig03pzf.b2 juor1rcw7y s: out the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductor 5* ,j-qmfzun7sfks 0fs in static equilibrium.

State Gauss's law.

  The charge carried by one electron is qz3zrgw;y -6 i$e = -1.6 \times 10^{-19} \; C$. 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 many more protoni (fjy z f- *x5ib.h2gungog,(k 2kc+hs than electrons does this piece o5k igh.g+o u nyc(bi -,jxfgk2*(fzh2f plastic have?

  What is the charge on 0+ fdi, vsqq +4tt8mna1 kg of protons?

  An atomic nucleus has a charge of j8 i8vz4f ;x yl ;:g2z +kjupxcs9:auu$+40e$. 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 valuesna qy5f 6et0mh s;hv hl*nx/97 of 2.0 and -4.0 mC, respectively. What is the magnitudv 0xtfy*59eqn;6sm l7n/ ah hhe of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1fp r5ww 1cfe-n( 17)eq1oab+p-yd r nh.0 N. What is oe-ap 1)rnpf 7dw+nch e fyb-1 (1rq5wthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apa a gits-;n6m. 5 mwdm*f7fs1eirt are they?

  The force between a x c6t9,kyt8 l3lb0mwg $30 \; mC$ 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. 7fspu+2p w/46 s1vo7 eoxvx bw7k vhx; If they are moved to a new separation of 8.0 cm, what is the electric force bv 4so;s7xoxfw 7 6e xv1hpkbvpuw 72+/etween them?

  Three identical point charges of 2.0 mC are placed on the x-axcssg*t.) tye *is. The first charge is at the origin, the second to the right at x = 50 cm, *c. esst*t)ygand 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 a mcx 0::m.tcysre placed on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the r 0mcymx.s c::tight 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 thejoftx 22 dsimmw) 0p04 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 tht) fw 00oixm s2jmdp42e force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of s.g:rf, xq(oo: amwcp zasc 1y9 o;f)4a 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 if a third charge of -Q is placed at the lz1px, scyo. cs:mf (9a4g; qao:f)worower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.3hui81wp9zon qvp,k+ * sm,j s0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC charge? n9s8,1zp+sjq3u m*hvwki, op

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 0zw5 hvqbh3l, = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 v0 hbhwz q3,l5nC charge?

  Three identical charges of 3.0 mC are placed at the vertices ojx5,p*s46b +eg-an081gjeld fv,nwk qwb9ujf an equilateral triangle which+gvw9n0 1bnup4 l,sgjkbfe 8djejxq* - 5wa6, 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. At wwy cbyz i6flp581vb4c.5u j;e hat point, on a line between the twevu6. l84cy;1zijw b f5ybp5co 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 origin035(bwq:g wp,tme fx4upwi *h and a +9.0-C charge is at x = 4.0 m. Where on the x-axi0*iw:h4bpuw(m3,fwet q 5xg p s can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pla-jv*6 a/0z cgu*goylaky,*vmced at x = 2a. Where can a third positive charge +q be placed oa*mz lk*j,/-*vu gcgy 6yva0so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalar. lr/jm5)h tjx6m/hgs /i/cu le,r- 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 k o2x .++aqhvoattraction of a fixed prok .x+aqh+2o ovton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hhy vj8za-c61.k:i dj nung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until tijc 1za8y :jdk. -hvn6he angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. Whats)ei3sqxs b: 1 ipub2: is the magnitude of the electric field at a distance of 1.0 m from t b2ibx3q:i ess:u1)ps he nucleus?

  What are the magnitude and direction of the electric fieldj8( hd12l,/xbrrop*;b jrq2 yp3xy dj at a distance of 1.50 m from a ;j h yd*2x/q rjp3lrj,brp (8ydx1ob250.0-nC charge?

  A 5.0-C charge is 10 m md m00zo 23ra eb bygk2+/4pisfrom a small test charge. What is the magnitude of the electric field at the locat kbr04z /2im pdoy+sb 302eagmion of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dires; bximo54d d*ction of the electrics xd mbi4o*5d; field?

  A 5.0-C charge is 10 m fromk oujn1)h2- fu a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of thjn2u-h 1 fkuo)e test charge?

  Two point charges each have a o3l/ w;sy l479rjy nievalue of 3.0 C and are separated by a distance of 4.0 m. What is they4o;n/w 3el9 ys7 ljri electric field at a point midway between the two charges?

  A 5.0-mC charge is placed jz:czj,(gy +d44boff at 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 field at the 30 cm mag(4oyfbzdj,:c f+ j4 zrk?

  A 5.0-mC charge is p8e6g.it0ps3di l:9ur3rnef 7 jit*gk w)ve 0 glaced at 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 the3 i:gvde0lfg80ug7k) ij3er.9ri tws ent6 p* electric field zero?

  Two point charges of +3.0 mC and99kvv twn:if- ym2-)s(gbfltg * ck 6i -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 between wb :slt-fn9g9kk m2 i6(yvf)-*tivcg them?

  Three 3.0 mC charges are at the three corners of a sqnvg) 8w8 5 h/eqqv.1 keuax3r2lktk7 quare of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field qq5 ewatel 7 v 1h3rg/n 8kxkkv28u)q.at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the coy1-o4 ,itieo irners 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 o,ioie-y4i 1t (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts*pm5sjx .go k/azq(w8onw*ung 25 7vl on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudeungs8w xnv 5z7/ pjgloq2*omw5(.ka* of this electric field?

  A particle with a charge of 4.0 mC has a/c q7p70nmckt 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 w9 bdg ;;;6wz z5+, syi8johyxtfq;ajis placed in an electric field of 6000 N/C pointing downward. What cha; gbyw ,sj;6yqi o;d jhaf9zz+x ;wt58rge 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. o (ujk8x4 h,rkThe ball is placed inside a uniform electric field, and is suspended against the uok k(r 48,jhxforce 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. 8mgsgef.i5qx0z + hl : What is the magnitude of the elect8 i x:0.ml+eh5sgg fzqric field 5.0 cm from the sphere's surface?

  A metal sphere of radiu +tn 57 au/-f/qtbo slj)laaw+s 2.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphe) w-fo+a/ j/ u abla7qtnstl5+re?