State the law of conservation of electric chai+k;h mq 4-nz/j7jh 4n mu9wvkrge.

  Is it possible for two negative charges to attrwy 8jl ;m92ksqact each other?

  Is it possible for a positive and a negative cha:ydsa5jmreer+7+ m/o y(:4rid2e i mtrge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod atn3/kd tru 6,im1-sjncquiru dnr3n1t/s-t ijk6,mes a positive charge and the silk

  A proton carries a

  The model of the atom shows lg(31by1ntx g a

  A neutral atom always hasy;tt k 6;s qgo87f.het

  An atom has more electrons than proton/kuwj9in4fw/ 6u*zlb s. The atom is

  Materials in which the electrons ari)*dn 9jyxt4.bv oz inw 3pm;/e bound very tightly to the nuclei are referred to a4x ziv;)o 9 bdtyn/jw3mn*ip.s

  Materials in which the electrons are bound very loosely to the nucle87tk q(m(nwbt 9byd9 s.0doyoi and can move about freely within the material are referred tn0(8bqw 7bott sym( o.d9dy9ko as

  A negatively charged rod is brought near one end of amxe 4wjk/l+-zpjr4:e n uncharged metal bar. The end of the metal bar farthest p 4r4wxm :/j +ezkelj-from the charged rod will be charged

  Sphere A carries a net positive charge, an 0z0bbv 31h wi x6sxq-k ;qd6k0cs)k1jst-wbf d sphere B is neutral. They are placed near each other on an insulated table. Sphere B is brbxvs z-jk1tcxib0hb13wkws dkqq)f6 0-;0 6 siefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posit/qk.brev f s;0ns/7jmively?

  An originally neutral elee(g4vrcrh 4 )actroscope is briefly touched with a positively charged glass rod. r(ev44r)acg h The electroscope

  An originally neutral electroscope is grounded briefly while a positivrdla*6jywn(c/mveo,7- hq/ g z u nb;3ely charged v3b6qg 7,nd(ja wocmh/z-*ur/ln e ;yglass rod is held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separat.hm ,qqfq+ o()xlhdw(e. Then a negative object is brought near the electroscope, but does not touch it. What happens th )q wmf+doqx.l(qh,(o the leaves?

  A large negatively charged object is placed on an insulated tabp+)yhemv j1o) le. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second )1 vmpho e+yj)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 each ball?

  Charge is

  What are the units of sq)oz7 c+p0fg4 w29(ozc hi gkthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger ivbth:j- n /mh:g/+bu49yhq 5fimn t;en magnitude 4t-ivn b/guty qn: ; +fbhhm ej/h:95mthan the second charge.

  Sphere A carries a netm,fmd jel v 92ya(1f4j charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic fmaj ,vym (29lffjde 41orce between them?

  Two charged objects attract each other wimpzo; ii3 tb0,th a certain force. If the charges on both objects are doubled with no change in s,im3i tz0pbo; eparation, the force between them

  Two charges are separated by a distance d and exert mutual attractiv sau4rxq1/s5(x9il:ojk i5xwe forces of F on each other. If the charges are sep5j4lsk1(ru59w xi sxi/aq: oxarated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happeq- 2 ew2n7wz5hfgt91r+ipm0(lvh say ns to the force between them if one charge 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 equa 0gpya+9vi 22s ewt1zrq nhh7lfm(-5w l to

  An electron and a proton are separated by a distance of 1.0 )b7dc:/ss0nwxw 8h;asd rz6ht 3si4bm. What happens to the magnitude of the force on the proton if a second electron is placed next to the first electronhct :b w/xn64)sis 7hd;8 0wzsa3bdrs?

  An electron and a proton are separated by a distance of 1.0 m. Wha wb or)k0z*:sit happens to the magnitude of the force on the first electron if a second electron is placed next to the protobor* :sw )zik0n?

  An electron and a proton are separated1 . ekb6xsya; tps/;pm by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50mk;.;eap /tsp y b1x6s m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second pob3fy 6r3ku.rbmm (k+d ;iyz/ kint 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, id uk;.i3 3f+kmr k rzydy(b/6bmentical 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 placed at the centroid of an e69n-cktffte*(6 tmo c quilateral triangle. When a second charge of +Q is placed at one of the tri6ct 6om9t-*fet k ncf(angle'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(xp/jiz *tl (f is not a vector?

  At twice the distance from a point charge, the strength of the eaw,0y/ yxc.tzlectric field

  Is it possible to have a zero e e*kvh.jfup12lus f. 2lectric field value between a negative and positive charge alon*vlp1ke. u22f.f j hsug the line joining the two charges?

  Is it possible to have a zero electric field value between two positive charge /n.jci vl)a+gs along the line joining the/)li. jga+nv c two charges?

  Electric field lines neu:qgju21pm80kzm p*al7wf5h ar psitive point charges

  The electric field shoaz6d*4g d t; a*rwi uioo/7,dswn

  Can electric field lines intersect in free ap i2e+(e36uru + b(8 v+psoetryx.ih space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform ele83leiti(xh( efy k 5;xcs*td8 ctric field. Give a statement concerning the electric field in the block's intfteyek8ix 3d ls(h8cix*; 5( terior.

  If a solid metal spherq4 . wur9k9kj 1nubqml2e,:x ze and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway lq92k :zmw,er9quxu1n .bk4 jbetween the center and the surface is

  A cubic block of aluminum rests bgru*cu61: ybgd8 j4g on a wooden table in a region where a uniform electric field is directed str*gb6ryggcu db :14 u8jaight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charg)h,ws g*jno )mccpp5/e

  A positive point charge is enclosekf0q8p-o,l rg d in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dik pl-g q8,0rofrectly above the hollow sphere has

State three properties of cond k4lp/ ,v8ii+fh meww nbm8j:+uctors in static equilibrium.

State Gauss's law.

  The charge carried byph mkwci v82 e8(o*t1vm;-s fl 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 *n+a6 ,arpg0 ke6mvdo a net charge of +2.00 mC. How many more protons than electrons does this piece of plastic have+gad0re npvm 6a6,k *o?

  What is the charge on 1 kg of prog4-qrwxn o2 0stons?

  An atomic nucleus has a cao1qsrlp4i2 9 harge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separat 40lst 0f5oqleed by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force between themfsl0 qe5l0o4t ?

  A 1.0-C charge is 15 m from a second charge, andr6zp6xbo m srs*/8a9h the force between them is 1.0 N. What is the /r6 z 6o8s*p xmba9rhsmagnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Ho(ia 9ou.d *zmdc(nbl 2w far apart are they?

  The force between a i+.rfola ps760 fph:d:h*add $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, e / +mvuw9z*stdxperience a 1.0-N force. If they are moveddvsu/9 m+tzw * to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-a+8j,con(gi;p t r-fd 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 d adfcp gjt;o,+ir8(n- irection of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is 16dk(gxk.s oxk,zwb ;placed at the origin, -2.b;ok z6x(sk,kgw1 d.x 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 lo+8mjh ab2 f-s+3opy q) kby8uicated 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 chays3j2uik q+- bf+8hap )o8bm yrge?

  A point charge of +Q is placed at thi-rz;2h2tq *5 rf czahe center of 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 chz5zq- 2hh;a2ti*frcrarge 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, p7ic1e 3bt brlw7/ l;j0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thei3;1w7b pj7 cl lbt/re net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nCal. ((thi fy8s.g2(h sqf v4gjrxj3zcwqg :.; is at (0, 0) 3:.g4ts v.jrj2 alyfxh ;c.sz( (ifg(qghq8w. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equem u*z6 3fmf/dilateral triangle which measures 36*fumd 3f/emz0 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.h1 5r.v ftpqx: At what point, on a line between the two charg5 p.fqhx1rtv: es, 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 origin and a +9.0-C charge is at x = 4h.dwbw,: lsw9.0 m. Where on the x-axis can a third chargesbwl ww ,h.9d: be placed so the net force on it is zero?

  Charge +2q is placed at the origin and char0 uo rj)4vcou.ge -q is placed at x = 2a. Where can a third positive charge +q be pla4 rujouoc). 0vced so that the force on it is zero?

  A copper penny has a mass of 3. 0r7tte0trseid60y i5 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 a ,4v )l,w a:f,hywblsyf kw l3)fixed proton k4ahyfw vbyw),l3 :s,wlf)l,some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poi3qb*v 4htwkm0u*5c m3yp tuy9 nt by nonconducting threads which are 30 cm long. Both are given identical u utmym*0*43 y9q5wcbtphvk3charges, and the 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 + tssw8g(v 7 nae8tl7*i40e. What is the magnitude of the electric field at a distance of 1.0*esnt t7glwiv7a88 (s m from the nucleus?

  What are the magnitu g4thb/3flgf5g/mg7 zde and direction of the electric field at a distance of 1.50 m from a 50.0-nC b 5gg lhf7/ z4/f3gmtgcharge?

  A 5.0-C charge is 10 m from a small test charge. What is th97.wisrusnt *e magnitude of the electric field at the locationrt79s . nusw*i of the test charge?

  A 5.0-C charge is 10 m from a sma7st0f 6 e1biswll test charge. What is the direction of the electric field?fi e1wbs s0t76

  A 5.0-C charge is 10 m from a small test charge. What vw)h8 +u lavcn8nl9 2tis the magnitude of the force experienvullc9)t n 2+8awhv8 nced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distazmv. flot q8zs-,,8wdnce of 4.0 m. Whazlzvm8.s-,tdow, f 8qt is the electric field at a point midway between the two charges?

  A 5.0-mC charge is pla8b m av7+uo.i:dvw wab5 :gqfeu;f-x7ced 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 elecbf:7fi xv-mvgww ba.5;qu :d +u8eoa7tric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of d wov+hkn) q+*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 ch hv+odw)q *+knarges is the electric field zero?

  Two point charges of +3.0 mC and - .6 om7ziboup27.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the po7 u m62.oobpizint midway between them?

  Three 3.0 mC charges are at the three corners ofu +o sn:gjch yfbzg.t5 +/)e:;ped p)vxoq,e+ a square of side 0.50 m. The l+5 e+hbjog) czuxf ;oyg/s:+ed)tn.pqv :e, past corner is occupied 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 placed at dy:* 5scx7uu fanela8w 8,6an the corners of the square as follows: +4.0 msdna*x5ye7c:8 f6ua ,lwu 8anC 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 ch.+w,1 x rlesebarge of 5.0 mC when it is placed in a uniform electric field. What is w1 x.lrese,+bthe magnitude of this electric field?

  A particle with a charge of 4.0 mC has l 3(sbkf38outa 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 . h cmjsgj8ey86:4j8vtk,tl b mass 0.120 g is placed in an electric field of 6000 N/C pointing downhkl:j8 cb 4eyv ,jm 6t.8js8tgward. 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 3 dy.bot;ri+cis placed inside a cd+o y3. irbt;uniform electric field, and is suspended against the force 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. What i)cps9io)*lw6.h qeh qn n as.(nphe d) g75/xss the magnitude of the electric field 5.0 cm from the sphere'sc h9)n xlh.)i7sse)wgnan . hq/qs6p 5d*( poe surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electri6pzq(. *efwsy c field 6.0wp6e*szqf .(y cm from the center of the sphere?