State the law of conservation of4 uodb 9)b7vgt electric charge.

  Is it possible for two negative charge, s+q3-ybgfizf-.h cws to attract each other?

  Is it possible for a positive and a negative charge tc jd3nhe8ylhbc 5(fx s7f*6saiqgw4 * 55,qvlo attract each other?

  A glass rod is rubbed with a piece of silk. During the pree cjt6nww 2seh ,1v4:ocess the glass rod acquires a positicwn2 wt4ejsh1, e 6ev:ve charge and the silk

  A proton carries a

  The model of the atom shovs-,pr2uz2 ) l9dgogb ir 2g+ lt/q+qxws a

  A neutral atom always has r3p:abs24 koq

  An atom has more electrons than p7*ipc;e;v7h9ykf+bg6j vws t9 *ptwdrotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclevbz y6zno ll(r,04m gh dz8c,(i are referred to ayg,8(r4(lol0, bdv nz cmzh6zs

  Materials in which the electrons are bound very loosely to the nuclei and cabkpv.;1ah3k7 tu,j q3nl h 8dun movd8.j7hv,t;b kuu3a3lnph q1k e about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal b-z r0 2nyzafq,r)kb /far. The end of the metz),0bar2y nk-qf /zrfal bar farthest from the charged rod will be charged

  Sphere A carries a net positive/wug wb.; cvhdr.je id/e(- :xuez1g6 charge, and sphere B is neutral. They are placed necx; i: wu.eu(r./-ej/w6 g1z dvb ghedar each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively c9ag6u u3 mppq1pw)p,rharged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charg704sy;2 wa s klaclt8red glass rod.csllyas r;78w20 a k4t The electroscope

  An originally neutral electroscope is grounded briefly/5-2xpjgxj7l;bauewmwo z*,n;s 3z k while a positively charged glass rod is held near it. After the glass ro;ujb*z2/ez ;k5xjmao3xlns,p7 -w g wd is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepqx4/7naj 9*)wzezx ovarate. Then a negative object is brought near the elecvz9xwzj e4*) 7qoax /ntroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mee2lds: o):t hrtallic 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 first ball rolls forward, but does not touch the negative object. At no loer:dst h:2)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 c8x2l/ 6vyvxa)5q ny w+fdl8heonstant $k$, which appears in Coulomb's law?

  Two charged objects are separatedtc ( 2db8-sa7xsqq m:x by a distance d. The first charge is larger in magnitude than the secondsxm8c -2sq:a7txbd (q charge.

  Sphere A carries a net charge and sphere B is neutral. The5 s r 9qn.bc:fj7l r9d(+arqgby are placed near each other on an insulated table. Which statement best describes the electrostatib+cg:q rn. jsaq95r7 9fb (ldrc force between them?

  Two charged objects attract each other with a certasuu3::gnueb i 0 6zgo jevq4:(in force. If the charges on both objects are u (o j: gnb:vesq40u:g3iu6ez doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mnd p5,+pglgtbc 7)q:dutual attractive forces of F on each other. If the charges are separa gg:p ldb+t5 ,pdcq7)nted by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to tht+ px4nhork 5s*)t7if e force between them if one charge is doubled, the othekr5*)p7x4t +fson thir 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 proton are separated by a distance of 1.0 m. What happens to i)p hpu)uam g 329.nxhdrp )h,the magnitude of the force on the proton if a second electron is placed n uari2gp,h))phndpx.m)h 3 9uext to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. 1oklphu-r3l k jelp w4dr ;-)+ What happens to the ma -dhl1k3prl)o p- ;wlr4 ej+kugnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What hd61wucqt3io 3.vofm 82(tcvv appens to the size of the force on the proton if the electron is moved 0.5 fc8owcidt q .3ov3vvm2t16u (0 m closer to the proton?

  A point charge of +Q izs ,p: -.2ul:sdveij5g5 d xfus placed at the center of a square. When a second point charge of -Q is placed at one of the square's corners, it is s e s5ugd uf pi,5:dzx.:-vl2jobserved 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 triangle2v plgfc0o: 5e. 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vertices?l ecp50:vg2of

  Which of the following is not a vectovy.qt)kx6klzq8 2 0lqr?

  At twice the distance from a point charge, the strength of the electri . ktnnk/z- jdc,maq8:gne+o3c field

  Is it possible to have a zero electric field value betv jsq,dfs9c4 4t1tpr1 ween a negative and positive ch,4rsjp1dqt4t9 sc v1farge along the line joining the two charges?

  Is it possible to have a zero electric field value,ykvdwlh 2. 6h between two positive charges along the lihh 6 .kl,y2vwdne joining the two charges?

  Electric field lines near psitive point chaom.z e84b8lv 3hbkh7oy3wd , arges

  The electric field showh *;iqyru;a+q n

  Can electric field lines intersect in free spacewy o2n.8i,h + lue.tro?

  A solid block of metal in electrostatic equilibrium is placedsp : gzl4+;tdivk b*8v in a uniform electrb vvp+lgi d: 8*tk;s4zic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow m o1+o wwsuacqah +/n( 6-loa,oetal sphere of equal diameters are each given the same charge, the electric field (E) cw(oqao ao6u +al 1sw,nh-+/o midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a regiontvx/j4s72 2 ;voik. bf*shlce where a uniform electric field is directed straight upward. What can be said concerning the charge on the block'xc7*h;fkt4 s j /ib2lvv e.s2os top surface?

  If a conductor is in electrostatic equilibrium near azox.eu3c * 6jlfs2n :+/ldqaln electric charge

  A positive point charge is enclosed in a hor5v ;s8ih lhv:n* 6sbollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point dir:6;lr h 85 issovhvbn*ectly above the hollow sphere has

State three properties of cond ngumxpdlf w71y n)63.uctors in static equilibrium.

State Gauss's law.

  The charge carried by one elecp;2( ; pyjisbsp, qvz3tron 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. 5r+g1y mgfy83ptwwti9 - wsbp2q m+u7 How many more protons than electrons does this2m+ gpq3p58+wifwm -b7st1ur9wgt yy piece of plastic have?

  What is the charge on 1 kg of protiok8( e6(g tjions?

  An atomic nucleus has a char+xn,xj2fhy rkz1vts5j24)jl ge 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 charge values of 2.0pi6 j)+vnty1x and -4.0 mC, respectively. What is the magnitv pit)61+ xynjude of the electric force between them?

  A 1.0-C charge is 15 m from a second y0h;ft* /hayruje 3t:hsmk67: bqh9v charge, and the force between them is 1.0 N. What is the magnitude o y6f7b0:h ;/ m skht3h uajtq9:yvh*ref the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.rqal/+z52) d3o kqus i8xf tr+ How far apart are they?

  The force between a om5o2v 2* r8nulq2csz$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, in9 kazh:7t3cfe(ywv7 q itially 2.0 cm apart, experience a 1.0-N force. If they are mo3wc e9kz(v fqh7t7ay: ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargevqyuyu dv +l +x:pa710 ei-z3es 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 caxze q0du-lye1v up:i++y7v3m mark. What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are placed on 0ce09l1 a xyxu4 wraicl8ymlgc m8.55 the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, a0l8uiw1 cccl.g xm5ex0y9a 4 yrl58ma nd +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 locatdsoh: o0 (wvp*ed 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 3o(s0hpv *:owd .00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second poinxwstq*aqj d ab0:+/; tt 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 t ;0d:ws+/ja bqttqx a*hat 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); Q3u q tbmti 6.jra ym209c7c 0j+czka49g = 5.0 nC is at (0, 0). What is th g994auqm ac +jym6ic kt07r2 0bc.tzje magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 9:) ql(fl2 hs m8wam)p puz)tan:qya9 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the ne hlpn9yt) zaaq:2)l wf8)aqmu9(:s m pt force on the 5.0 nC charge?

  Three identical charw9 dd6 nw(1o8dr+ wytoges of 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic r(tdd1nw8 oo9wy6wd+ force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, who5)4gg fmf; phich are separated 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 that the electrostatic of p)5 g;mhg4fforce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-Csak 7 f*nx:rf h;k/dj. charge is at x = 4.0 m. Where on the x-aaxkfd.rf :j/hksn ;*7xis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at trxnvl4:b n 7x1g .u,kuhe origin and charge -q is placed at x = 2a. Where can a third positive charge +q be placenr,7vb.4g k:1u xun lxd so that the force on it is zero?

  A copper penny has a masqwgf/u/o shqyn) *5- u9abh9rs of 3.0 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 attractionpakc(0t6afpi1 wla wj d7 tr hj4 ,k,,ja37fr8 of a fixed f 77k,k jpc6rf30lt(w1 4r,aaj8 iwhtda j,p aproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com:ym1;-odlznzl5u.z/pq hx0s2/9jw hfs3a f ymon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until2h1yno z sffsal9 0zdjzx3//y;mhp w5-q .ul: 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 elect+*ej nus l.yrj.: dic8ric field at a distance o8y:sj+ l.* uin.crde jf 1.0 m from the nucleus?

  What are the magnitude and direction of h:) wb7bdldwgx/mv2(the electric field at a distance of 1.50 m from a 50.0-nC cha/x:m) d(2 7gwdwvbbhlrge?

  A 5.0-C charge is 10 m from a small test chg960ap ea ts0karge. What is the magnitude of the electric field at the location of the test charats6pe9 k0g0 age?

  A 5.0-C charge is 10 m from a small test charge. What is the d2y hjj4u,p9l)m4edxairection of the electric 2,9jxj ay4m4ul)h de pfield?

  A 5.0-C charge is 10 m from a small test charge. What is the magnk.)q93kb d0ob /bd4v j9qenccitude of the force experienced by a 1.0 nC chd9c q.bc qokv4j3) bendk9b 0/arge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and age9q9r 9d2/h u6 jfan7kvaxm674 twn qre separated by a distance of 4.0 m. What is the electric field a r/7aghtu qn9fvdx24 j9em 697nqk6aw t a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark ofby 8i(/ 6uswj)cu r7zd a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What i 8jiwdu u6(bcz)rys7/s the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.0 mC cha+1vk +-uqmvtm 9fe9vm,aa ;u krge is placed at the 50 cm mark. At what point on a line joining the two charges is the electric ;1mma v+fumv9k 9 u-qv tak+e,field zero?

  Two point charges of +3.0 mC and 6pvy k+l k0j3*ff3pto)n1 ipt-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electpfoj pvtnikk 3*0t)p1y3+ f6lric field at the point midway between them?

  Three 3.0 mC charges are atsbbsa4pw/4.ma; hlw4 the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the4hb s4lm;a/wa.bpw4s center of the square.

  Consider a square which is 1.0 m on a side. Charges arehxcv;- vn/ u )t)d5(hld .eank 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).dnvvhtux;(d)kh .ne /cl-) a5 What is the magnitude of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed in a uniform elekcdow8 pu l84 ,mp8v:hctric field. What is the magnit u 8op,4clk8mw:h8vdp ude of this electric field?

  A particle with a charge of 4.0 mC has a ma za ;6n57sj(qt) i1i3hvvwj/g a rsr*s)a ty)css 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 zuqcx s y(xm 3r,)h syt/fy9*86000 N/C pointing downward. What charge must be placed on the ball for it to 8*9m/yqftc)sh(ys,3zuyrx x be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball 4pum7cb(rg .nis placed inside a uniform electric field, and is suspended against the force of gravity. W7p m b4r.n(ugchat are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carriekpvogcp18 9g/s a charge of +2.0 mC. What is the magnitude of the electric field cv 9k1 op8pg/g5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm car z q im/iy(e8xey0c-m2ries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of/mx 2emy- ic8(ezy0i q the sphere?