State the law of cons;4v1(i mh uuc 4hyh,oaervation of electric charge.

  Is it possible for two negative charges to attract each ot62h.4 e8iq ocpgj n9hjher?

  Is it possible for a posiq/ z7(qvh2++ylm z dawtive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass r-4g uvyw 5m;ybod acquires a positive c;4w-y uybgvm 5harge and the silk

  A proton carries a

  The model of the atom nzw ge8fcd1* j/ dhn6+shows a

  A neutral atom always hanm m22;6 i,jg ws9cwtts

  An atom has more electrons than protons. The atom;n zk:+n w4i8 y3 r7cknrber /wp/kuw1 is

  Materials in which the electrons are bound very tightly to the nu o7q b*6it:-dr cze3eaclei are referred to-te6io*zd7ea b 3q:cr as

  Materials in which the electrons are bound very loosely to the nuclei and can m jdyqkbmb-kts)z0,8 se5 :ky6ove about freely within ed8sz b6-qmb j k,5 y:0ktsky)the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. nf+onj cbi zr/1,0b k*w;wn:v The e;nf+ /*z,nv :inwbojk br c0w1nd of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral7u l2rxv9f3fu . They are placed near each other on an insulated table. Sf fur3 2u97xvlphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivykks; ;-a*bp lely?

  An originally neutral electroscope is briefly touched with a positively)t u(wcs gv30h charged 3g( 0thw) usvcglass rod. The electroscope

  An originally neutral electroscopph/,c l8l;*tqpl pze; e is grounded briefly while a positively charged glass rod is held near it. After the glasst;ll;eh8c/ q z,pl*pp rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Then01h: nr3x3+dh b,5v 3vwkt:fjctykpo a negative object is brought near the electroscope, but does not touch h r yh:n:v5j3b,1wkdtfc3pt+0 3vx koit. What happens to the leaves?

  A large negatively charged object is placed on an insulapm)p9*,l ;ml 0 ugbnhtted table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ballgp ullm;0)hnt,bm p9* 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 each ball?

  Charge is

  What are the units of the Coulomb const3 4cbx bbt4b eu1*)gc 0dqu;xqant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a dista9,cfw )9ju-by+hmw lm kl 8b,ince d. The first charge is larger in m)kh9 ,wbm-w + l,ubfml8ycij9 agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near(pv;-d dk*yi o8tgmu7 4v )nhz each other on an insulated table. Which statement best describes the electrostatic force between them?4yv-uih)d * 8 tkzg7 ;ompvn(d

  Two charged objects attract each other with a certain force. If the ch1ymt v10dt ky (bje y)l2l:c w/,qe7fbarges on both objeyd kfb1 cyeqtbl y)1lv, m2(wj/0t7 :ects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces of c7sf f;wm0mhg)f1*mqn fmh3; F on each other. If the charges are separated by a distance of d/13mmffq;ch;f s 7h)nfwgm0* m3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the q ts j/rq,jhlw3 c uih-0y;tu6,i9 1oxforce between them if one charge is doubled, the other charge is tripled, and the separar;x,3iy c1,slih/uqt oj9 u qw6j t0h-tion distance between their centers is reduced to one-fourth its original value? The force is now equal to

  An electron and a proton are 8 a0ew 1f9/2myu1nttd--chbrh j1mwm separated by a distance of 1.0 m. What happens to the magnitude of the fou9tew1m1mwn2 jh1c-tr0bm /hya 8 -df rce on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 vt2oypfj ;r): 1w 1p doz -qdtsh-z+-vm. What happens to the magnitude of the force on the first elecz tvp--oz-qodwj;r s+hy 2:1vdf)tp1tron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wha5a(; xg eurbm:r qc3bh/c) s1et happens to the size of the force on the proton if the electron is moved 0.50 m clo hurg)exacc5q3e/br1 s; mb:( ser to the proton?

  A point charge of +Q is placed at the center of a square. When a secof0n 9 1p ) lncidjjy4;ffhp.p0nd point charge of -Q is plac0f lnc1j;p f.fn)ypd0pi9h4j ed 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 /xnqz gh0*ch3 is placed at the centroid of an equilateral triangle. 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 magn0z chnx3/h q*gitude 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 vectt irr2p rb7k*)or?

  At twice the distance from a point charge, the strength g tnz))aig6 cfe+/g.cof the electric field

  Is it possible to have a zero electric field value bet.sogfcnhemlw5) w,p6 04l u7cween a negative and positive charge along the linel)06e4 l,.5pufg7hwms cwcno joining the two charges?

  Is it possible to have a zero electric fielgmce2v u4x. /t n18ppfd value between two positive charges along the line joining the two m/te.g 28vxp1cn fp4ucharges?

  Electric field lines near pswg-v4-. 2tb h5 kfhtjd t7pyu+itive point charges

  The electric field shown 6;9,leynbce9 lf .vsq

  Can electric field lines iny7gn55.*a4 aeu cch xlgy -hv0tersect in free space?

  A solid block of metal. q3zer3,gf8k7kla iht)p4f g in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the 4.qz)lhfap k, 3g 7igtfr38keelectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each gimg - ktky v-rd;o:(ltb o-t9u5ven the same charge, the electric field (E) midway betweet l5tbkoorgmtd(k; - uy--9v: n the center and the surface is

  A cubic block of aluminum rests on a wooda 1eh5+rv7 1mo*vee 3b2wepwden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sev +rvwde5hpb*7e312ow e1am urface?

  If a conductor is in electrostatic8poyr yghqcx ((l+ngq*kl1j( .m4by 6 equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grounde+0st gaq;h-c mg3ojwo g 45g+kd. As compared to the case without the hollow sphere, the ele5 g+g;kot ca3g+mog-0wsjh 4qctric field at a point directly above the hollow sphere has

State three properties of conductors in static e ac24dd y8ae.hquilibrium.

State Gauss's law.

  The charge carried by one electronff4eg.s9u:bk+s p plvr0v9* g 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 many 27( (ih xhhvn/fs:gyqmore protons than electrons does this piece of plasticfy :n gh (/(7v2hshqxi have?

  What is the charge on 1 kg of protov4/lvc *2 as d9q1i*thx lml5fns?

  An atomic nucleus has a cha)8 flr24-yhu8lgwmf irge 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 charg4 lc-4osh5-/n9aqkivfrs2nr. 8 hkjue values of 2.0 and -4.0 mC, respectively. What is the magnrnk .2r4jausn/fi8-9-h lcs45qv hko itude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the y( j-b;( wlovmforce between them is 1.0 N. What y ( -jl(bw;vomis the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1 1g avr06c-zkl.0 N. How far apart are they?

  The force between a ah93(q hbkf1 k*xjp5e$30 \; mC$ 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. If th t5jz tzy*)t0ley are moved to a new seplyt0z jt)5*tzaration of 8.0 cm, what is the electric force between them?

  Three identical point chartdsda zvj 9/us8e1b:o p// ej2ges of 2.0 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 opu j/o8 tzj 2ea:se9 s//bdd1vf the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axicx n*wkaa tw:97jl8:hs. A charge of +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 force which acts on the charge at t9 8j::twa wxkh*ca7nl he origin?

  Three point charges are located at the following positions:6hu ( jop-pgjvj8 ij6j-dnz8 8 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 chzij8u-o6 (v8j6j hdpgnjp8- jarge?

  A point charge of +Q is placed at the center of a square, and a second point t rymmh4bkctv3h+// vl2 ij8)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 th2r kh48tv bilcv) tm3m+/ h/yje 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, g6 k21tmqg3 ,a 5yadpyk *7uu0oxk1si0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force onkk7y2yg 1gtx3duk1o ms,pq 56*0aa ui the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0de 5rcm65u/ j/v.aawq nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net j6 //m.cqaae5 wvdr u5force on the 5.0 nC charge?

  Three identical charges of 3.0 mC;pn a 13,yp6w z+ek n9ypbrl7o are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force paypny r, + k;bnew6z97 o13lpwhich acts on any one of the charges?

  Consider point charges of +Q and +4kb;hi) l (:asmQ, which are separated by 3.0 m. At what point, on a line between the two charges, would it be p;amhl:b)i s k(ossible 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 a +9.0-C charge is at x = 4.03j ipclsm/ws(xm1( x a4/ lt2cx9pqd9 m. Where on the x-axis can a third charge be placed so th9jl2xc3txi19d ap(4 (csqlp/ m m/ xwse net force on it is zero?

  Charge +2q is placed at the origin (;nv3w u.co4prqovkd8hq96 f a+f:ml and charge -q is placed at x = 2a. Where can a thiv cd(apw4q+qr k.6no3: uhvmlf;9 o 8frd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g.9vrc.qe a*7 i0lahy*j 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 a fixeb; liciai7d 33d proton some distance above it. How far above the electron3c3 bil id7i;a is the proton?

  Two 0.20-g metal spheres ar ks1y5a*)4i,y- vb wmuiw-jmh1:yu hfe hung 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 the angle between thjyuf mw hv-w,4h-15aisy:y )um* b1kie threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +hj50*ic lzs u1 tdqw-k mmg)2*40e. What is the magnitude of the electric field at a distant)m51*dlgmq2shi wc u k 0j*z-ce of 1.0 m from the nucleus?

  What are the magnitude and direction of the jz3pb;j)1/f 7kf nvhfelectric field at a distance of 1.50 m fromf;jh7f3pf ) kbz nj1v/ a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. gf2 c bm,ipu4; What is the magnitude of the electric field at the location of the tbm,4 ipc2gu;f est charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direct ,-5-1ok,vp w4kimt x iy2a6vavn1olrion of the ele-ywma 5 a21ov,o-v1kpni, ki6rtl4v xctric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude mp ng6 f 8l+)l7ckm7cr3w rv.kof the force experienced by a 1.0 nC chargemck7mlgf n. +78rc)pr36lwvk placed at the location of the test charge?

  Two point charges each have a valuerzlkgh;)i(d 416b n- heilha 6 of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at lhihgr16ldz6 )i b;-e(nhk a4a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiflc*e.5 hssb0ck and a -4.0 mC charge is placed at the 50 cm m 5 sh*bl.s0fecark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stickk wv +wxd8l27mf+k (var2*oa o and a -4.0 mC charge is placed at the 50 cm mark. At wfwdl o w87xv+ vm*a2ra+ok(2khat point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are 5zp.s4d5-isb m*h fyyx:de3n placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at tn5ys d 3fmdz-:*e5bh4 s x.ipyhe point midway between them?

  Three 3.0 mC charges are at the three corners of a square of s/)g qiw ww6p.8t lk65ehuh p:zide 0.50 m. The last corner is o 5kh6 /weiwp) l:gt8up6w qzh.ccupied 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 qfz1exk:vu,3g( lli - side. Charges are placed at 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 :3 qkx,(v -l iefglzu1the square's center?

  A force of 10 N acts on a charge ofe22gz 8 cv0hxe 5.0 mC when it is placed in a uniform electric field. What ie08xec2vzgh 2 s the magnitude of this electric field?

  A particle with a charge of 4.0 mC has afz8g ;*xqg0ev + t ( cxlc70pffpb6-8 6ebnacf 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 electric field of 6000 Nvhofg*z) qmjyet24 9una73 f:/C pointing downward. What9:4qaf 7hjgny v3* ozfe)u2mt charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 :xyr(84 hvvm(gdc.bc r jvi4- 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 magnitude and dire.cb:i-g4rmx r(h8(vvdvjc y4ction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is theekk ifg)ai20 )p0.ztz magnitude of the electric field 50 kfze ig)ptaik.z0)2.0 cm from the sphere's surface?

  A metal sphere of radius 2.val2t)vxog-5m/ bfij rmx+,/0 cm carries a charge of 3.0 mC. What is the electric b)xa/l fm -v2 5vrig+otx,mj/field 6.0 cm from the center of the sphere?