State the law of conservation of e, it0)-r/ ryrv1hmab clectric charge.

  Is it possible for two negative charqbk6, x *eg3o zj2edh/ges to attract each other?

  Is it possible for a positive and a negative chargusi bxx/cv i/*tnd95 3e to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod8kf6fr+c1 vpw acquires v p+1f68kcfwr a positive charge and the silk

  A proton carries a

  The model of the atom sa5axk4jp;;dgu 7rog r.g,:nfhows a

  A neutral atom always xl9ybtxf 31p:4d2z rf )u4lx8wbo 4abhas

  An atom has more electrons than prnt t4 a7ump)mk47 ug.zotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are refe):uo4kufv6k 5f+fd v h txona4(:n1az rred to a v5tvk 6do n:x4(h4f+u:1z fa ao)fnuks

  Materials in which the electrons are bound very loosely to the nucleif+l d+x3 plf9 ms7nufm8-uw+p and can move about fffnfl9m++-7mu+d u3 plpw8s xreely within the material are referred to as

  A negatively charged rod is brought near one end ofg y4kjmln7i-m 3yub5/ohq,njd7a - y7 an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chargedygmbd a /nk-y,i37 4u5-m7loh7jy jqn

  Sphere A carries a net positiveh(iy (c1 pzib; charge, and sphere B is neutral. They are placed near each other on an insulated tabl(h1yp ;cz(bii e. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chginy g p6:6fi, tkvlij -jlk53g8f7;carged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positiv0wj ml)afa; l2ag3q+q 5xqj.tely charged glass rod. jt.gamqxa0j )qq5;aw lf2l3 + The electroscope

  An originally neutral elecaiwl)0vuk.(0vrq.c x 5*su7kndr e0o troscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosc5svi*0(vk o)aecl ukxwd0 ruqn. r .07ope

  A positive object touches a neutral elelcn *c8 :9vcnectroscope, and the leaves separate. Then a negative object is brought near the electroscope, bcccnv ne*8 9l:ut does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulamv +)a(c,a (n,jglg evted table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metalli (n)lea ggj,+cm ,(avvc 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 the Coulomb constant ) mj3yf,ptez2*)nsl n 8zgdw)2u 6zq i$k$, which appears in Coulomb's law?

  Two charged objects xr nxh, +*+lx/ici(cc are separated by a distance d. The first charge is larger in magnitude than thex hc*xi/ x++in(,rlcc second charge.

  Sphere A carries a net charge and sphere B is neutral. T -teu0y,ji kt:hey are placed near each other on an insulated table. Which statement b iy,-tk0j:t euest describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.;zrh 0d2. twkc If the charges on both objects are doubled with no change in separation, the force betwez; ct .wkh2rd0en them

  Two charges are separated by a distance d and exert mutual att+- l.:mn azl1uvnzwo2ractive forces of F on each other. If the charges are separated by a distance of d/3, what are thoz:v. na1lu+2m -zw lne new mutual forces?

  Two charged objects attract each other with a force F. What happenslluuhju93yc:w zne)/,sqvq -8n k:p 3 to the force between them if one charge is doubled, the other charge is tripled, and the separal:3 n8u junsp/:kw) lqqz-c39uv, eyhtion distance 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 /xpafy:zix /f a5ga07distance of 1.0 m. What happens to the magnitude oaa0if:7y /agxfzx5 p/f 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 distancqi4 bp+ k)0euje of 1.0 m. What happens to the magnitude of the force on the first electron if e+)ji0ku p4 qba second electron is placed next to the proton?

  An electron and a proton are+ z:vzmv0i+ vy separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m 0mivv+ v+:zyz closer to the proton?

  A point charge of +Q is placed at the center of a square. When a second poi rqtjy09.z*ri a3cfl ;nt charge of -Q is placed at one of the square's corne30y;aticz qlj9 r* .rfrs, 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 is placed at the centroid of an equilateral t 6 jri.ovl2au8riangle. When a second charge of +Q is placed at one of the triangle's vertices, an el2.oiu8av 6j rlectrostatic 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 vecjeg,5c d,uwg:6pd)dg t k 54kptor?

  At twice the distance from a point charge, the streau/+enn i* x+6*xjaqnngth of the electric field

  Is it possible to have a zero electric field value between a negative ojcu8:;rh9zwq6d4p x and positive charj9rzd8o6u q;w4hcpx:ge along the line joining the two charges?

  Is it possible to have a zero electric field value between two pok v35eqktu)jh-uz/-c b(0zo5c v d9tusitive charges along the lin )d 5/th5uzz -j 9qtvkkuc0ucoev(b- 3e joining the two charges?

  Electric field lines near psitive point cv z9v5gu;g*hl harges

  The electric field show ) t6 ezg)73jzfuzeve3n

  Can electric field lines intersect kv h/-(s6 zcav-x6jwk in free space?

  A solid block of metal in electqe3 z 3j (73qsopyc5vurostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field (js yq3 3 v7c3oeq5uzpin the block's interior.

  If a solid metal spher(q. vnrop l o89)rx2:zr3knyee and a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the cenr.: 32k8pv(9 eyro)nln ozq xrter and the surface is

  A cubic block of aluminum rests on a wooden tabl s1 x3dchb.lu7c4he j)e in a region where a uniform electric field is directed straight upward. What canc) h3e sxh ldj1.b4uc7 be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an e0km( )vterr-6o; b scflectric charge

  A positive point charge is enclosed in a hollowv 83 rzlh792nylq e:ma metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly a7ae zlvqm9 y3n2h:lr8bove the hollow sphere has

State three properties of conductors in static equilibrium2r)yjo8;4r4hgpbg m l .

State Gauss's law.

  The charge carried byr)n3q(z rz257 x dxlwm 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 chargqr6f6* xhrs8.jgus, ce of +2.00 mC. How many more protons than electronsqscr,r6jh6ux. gf*8 s does this piece of plastic have?

  What is the charge on 1 kgjce:o-i i07no of protons?

  An atomic nucleus has, un86wkwc2pao ,xh:w a charge 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, have93dyg n( lqf+pasvx-ul ,3di,o e (:bs charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the egy,:3- 3pq(ild(sfl,va nxsobd+u 9e lectric force between them?

  A 1.0-C charge is 15 m from a second charge,34a0 lyqfzf9 f and the force between them is 1.0 N. What is the magnifly3 9q0zf4fa tude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. Hoyfxf z6y 5)u-1o73md-whtcq qw far apart are they?

  The force between a z-1z op3 b93os4ehxsv$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initia 4 lbkdi7o0)gwlly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what gio0)kdwbl 47 is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-tdy vu0pq/ ;sx-+is 3vaxis. 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 the electrostatic force whi 3vpqdu i+/tvx-s y;s0ch acts on the charge at the origin?

  Three point charges are placed on the x-axis. A cha uw(d+;a hdtidnpv; 0kl(,d1fwb+ o3o rge 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 electrostatindd (w0;d +;, vok+(ptabh f iuw31dloc force which acts on the charge at the origin?

  Three point charges ares0e/6*iunb5 azrr9+b - ziihdecb3 :z located 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 for inb9b5r6 ebzh/:e-u0cza*3i+id z rsce on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, aa8hz8wy(; vje ue. fy;nd 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 isfu;(.ey w ya8v8ze j;h placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30kjbt5 +e5i20 jx sphm7 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on thejmbex5i5s0k7jht p +2 5.0 nC charge?

  Q1 = 6.0 nC is at (0.i13m vi2oui4uvv w7)lb2 pl6n30 m, 0); Q2 = -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 ov 7v2 uub4)np6oiilv13mw li2n the 5.0 nC charge?

  Three identical charges of 3.0 mC areusu tl;*b n+q3 placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chal+tu; s bn3uq*rges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At wh.k5, x os(flh*rcxs)y at point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatic force actin(xk .s y *hofl)x,5scrg on it would be zero?

  A +3.0-C charge is a:-4unv(fc jlt xi) ad;l7rn*r t the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed soudjcrv-xa ) i7(frt l;nnl:4* the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is 6ia 9nh:exv *jplaced at x = 2a. Where can a third positive charge +q be placed so:vah96jx ie n* that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tot 2 a5wg)cszxo( 624a 7nxnh cx0gb;dpial 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 force2guz uz2,al4)6x yi r3,iuqolj9 +utm of gravity by the attraction of a fixed proton some distance above it. How far abo4u)36 2zuy lg zuolq+x2u mai, ,ri9jtve the electron is the proton?

  Two 0.20-g metal spheres are hung from wu(t b0uua6;j a common point by nonconducting threads which are 30 cm louw6 j0;bauu t(ng. Both are given identical charges, 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 +40e. What is the magnitude of the electric2w7p6 vp4vv *bdl.jmx field at vb*.vd jm w42 vpp76xla distance of 1.0 m from the nucleus?

  What are the magnitude and direceq +va0mq5s8nybq1( ction of the electric field at a distance of 1.505( scq+ave byn q081qm m from a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What w:5/qo) jqp7l0 wbthxis the magnitude of the epq5:h t wbxl) 7/qjwo0lectric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directij6g7v 93vbt gpon of the electri7 tj63pgg9 bvvc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 2)mj(k*t4bi pgrt78b4hlc dv9b 4plb force expei8dl44pkbclgbt )vp r94(j 2*th bb7mrienced by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.zcsj,-- fesc41e u*oj*9pmk t0 C and are separated by a distance of 4.0 m. What is the electric field at a pupt-cjj*ese-*f1ksc 4 z, 9mooint midway between the two charges?

  A 5.0-mC charge is placed at the 0 c,5gg(m eta 9je3q r-ejhf y10;on*mbem mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric y(f*e,qjhame0rgob j31;me nt5 9e -gfield at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick a2z slilp0c0 r 4je4oq2nd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line j440 e0c2 izqspolj2 lroining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x =hc5r uhz8.rxr p of1ffthl2 p) 46rq7j,ci*9i 0.20 m. What is the magnitude of the electric field at the point midway bcpprz u. 9fq h)ff4,*6lirh5txir o2r7 h8j1cetween them?

  Three 3.0 mC charges are at the three corners ,* )dx9cchsuyof a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the centeryu,c)s* c x9hd of the square.

  Consider a square which is 1.0 q bx5j / vxmpz7sx5w7tf8 *u0xm on a 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 the squa5w78qf /jvxuz50ms ptxb7x*x re's center?

  A force of 10 N acts on a charge of 5.0 mC when ite98rppa6onw z*1eljq, j+r i8 is placed in a uniform electric field. What is the magnitude of this electric fo+pjrpe6q9ai 8*,nj rzl 8w1eield?

  A particle with a charge of 4.0 mC has a mass g-a+,. -;s7aqx mt;jvvg xjfey6mzz5of $5.0 \times 10^{-3} \; kg$. What electric field directed upward will exactly balance the weight of the particle?

  A Styrofoam ball of mass 0.120 g is p sljny,y.q mg u7bqps./-56d zlaced in an electric field of 6000 N/C pointing downward. What charge must be place nm. 5sd-,/.qg7pqu s6ylbyjzd on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balt j3/th; -yrs .ntg4plx0f, rsl is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electrt-th3nj0g ;, srf4l ./x rsytpic field?

  A metal sphere of radius 10 cm carries a chj2hd a(e: ;)rybxwa)harge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfacawr):bah2 e ;yd (xjh)e?

  A metal sphere of radius 2.0 cm carries a cha ,ok9c ijth z4m8ohx;2rge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphezc8j;omh 2 9hxti ok4,re?