State the law of conservation of electr72fyp +b4 pl jb-1efyqic charge.

  Is it possible for two negative charges to atoa x-r8tz(er /v(urw 9tract each other?

  Is it possible for a positive7a b 1cb/qy(rb and a negative charge to attract each other?

  A glass rod is rubbed with a pieja9u5 ob16)ke3 w f,xe j ,2ypbgx+kacce of silk. During the process the glass rod acquiujky6x p, 5egkofa a 1cebj),wx9b+23res a positive charge and the silk

  A proton carries a

  The model of the atom s(v rij hz/c*djv-.i:whows a

  A neutral atom alwaysc ausvg.gd8q:,d.+gy txw0a. has

  An atom has more elejc+yin i1y v/;ctrons than protons. The atom is

  Materials in which the electrons are boo2 6 xc-rsp6nsund very tightly to the nuclei are referrepxns6 6o-c2r sd to as

  Materials in which the electrons are bound very loosely to the nuclei and iy-0 (h +npynscan move about freely within + psnn(0yhiy- the material are referred to as

  A negatively charged rod is brought near one end of an unc.mb lmg 2pqe*0/ 2pollharged metal bar. The end of the metal bar farthest from the charged rod will be char0/bmqe*22 pllop gl m.ged

  Sphere A carries a net positive charge, and sphere B is neutrap c ye/j6c2xn5l. They are placed near each other on an insulated table. Sphere B is b j5 yc/n2ep6cxriefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod ch k;1 qexhk(7xa6ej2yo.heb a5.t gfy:arge an electroscope positively?

  An originally neutral electroscope is briefx 2y7u(up9jhqgl)ck 5,dst0l ly touched with a positively charged glass rod. The electl p25u7uk9qt,j0)(dgl hxcsyroscope

  An originally neutral e 6u ng4n 8wb4wi:h-qzt drdf6/lectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod ib6 w z846/q:n-ti gfhndwu4rd s removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. Tlk km3qj*mn q ;)lo,8mhen l*l3kk)q mom8 qj,n m;a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an t4 hcrv.xqga,;3 umo,insulated 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 first ball rolls forward, but does not touch the negative object. At no time does either ball touch the negative object. Wha;ohc u3,q .4ar,xtmgvt is the final charge on each ball?

  Charge is

  What are the units of 4yiow.k3 5 if+p5i is8ut mbj;m ;y-rdthe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The fc g 1ams)a8zp/+khx+ :4kaamu irst charge is larger in magnitude than the second chka/up+:a x4m gas +)kc8mha 1zarge.

  Sphere A carries a net charge and sphere B is neutral. They,o61qae. onvf 47jpnd are placed near each otheno,qd vfo4 j.17en6a pr on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa0s*j ngq f:2toy:gg.6j b 7bfdin force. If the charges on both objects are doubled with no change in sepaq j f*6tgfob:ydngb j:s7.0 g2ration, the force between them

  Two charges are separated by a distance d a 98bp1z nkwj7ye/8ov knd exert mutual attractive forces of F on each other. If the charges are separated by a distanceo wnv pyk7/j81ke89bz of d/3, what are the new mutual forces?

  Two charged objects attract each other wv69ri bbks p-*0d1 x7ydez)rhith a force F. What happens to the force between them if one charge is doubled, the otherishrbe9*r6)7zx dy v1 -d p0kb 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 hab3fqyd 2g um03cx7z1eppens to the magnitude of the force on the proton if a second electron is placed next to the first electr1g3zux dqf 3yebc 27m0on?

  An electron and a proton arrmt*50(gj* seoyf 6eqe separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed ne*qe(65e0tmgyo * rjs fxt to the proton?

  An electron and a proton are separated by a distanl9 x wli31pa3tce of 1.0 m. What happens to the size of the forcetlp31 a9l3x iw 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 sq eo*.vfgd n91wiv54 zuuare. When a second 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 9vwfoz.u vdi*n1e4g 5 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 dz.jzqu5: xyzbx.s64of an equilateral triangle. When .x4bzuyj5 q .zz6xd :sa 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?

  Which of the following is not.pe9u8s rwo(fd4sb 8 m a vector?

  At twice the distance from a point charge, the strength of the electric fef53k 0a ea0m4 hp2pzaield

  Is it possible to have a zero electric field value between a negative anjaz8.8n6zkh5/bgx r. z.qxuqd positiv8z8gz juqz./xhq. 5xn6r.b ka e charge along the line joining the two charges?

  Is it possible to have a zero electric field value betw4f y9:fh 5x+sc:tpedpeen two positive charges along the line joininp54fc: epfs+d9xt yh :g the two charges?

  Electric field lines near psitive point charup 7s welf59ai 9pv2-wges

  The electric field shx0ncb0cpd79m r) / mmto;v4flown

  Can electric field lines intersect in freeim6 eg08rzl.e space?

  A solid block of metal in electrostatic equilibrium is placed in:lc, k cg1n1/xbrr n+c .stuh7 xac.;c a uniform electric field. G1x.cx tcr.nbs1: /ncc cug,ar;hkl7+ive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hol3kaum3j jgc: ep;;p3klow metal sphere of equal diameters are each given the3 jjgkme:puap; k3c;3 same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a oue4f;os36on uniform electric field i;u4es3f 6 ooons directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in elect0/8iqjh fc4:ykg j mic/4zvd)wlv;v0rostatic equilibrium near an electric charge

  A positive point charge is enclosed in ax(v0x)iv ug qyu)3gp0 hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the elxp0qug3gyv) 0(u xvi)ectric field at a point directly above the hollow sphere has

State three properties of conductors injc/6; j*ox as-csio*p static equilibrium.

State Gauss's law.

  The charge carried by one electronqz *tn4/2 yrrgkp13ek 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 mqx7rm j32h: d/13lfaxv u1tna*.f wuxC. How many more protons than electr13*dfuw/lax qvufrh17xmj2 . txn: 3aons does this piece of plastic have?

  What is the charge on 1 kg of proo sl4k-6h hdsks; a79otons?

  An atomic nucleus has a charge ofake obb4 4ub6)ib e0jig65y:0ng qb9+(l q icc $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cmd 7,4 2u,sh8 corod( t8trmekk, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitudehktrk , mueosrtd 4oc2,788d( of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and t.bt3sf02d l; ud xb9gthe force between them is 1.0 N. Wha23b 0 lbd9dgsufx.t t;t is the magnitude of the second charge?

  Two 1.0-C charges have a fve6vs.sg a:f 8vt g-v4orce between them of 1.0 N. How far apart are they?

  The force between a /e9+pgkk-i m8aosbp8 *wc4a g$30 \; mC$ 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;z3.-0vbn s1v0 ,zpkqo hk(lusjbn. n-N force. If they are moved to a new separation of 8.0 cm, whak sb; jnn ko0b.v, -0l3 vz(p1usnh.qzt is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first /qh4uu(8zanumff1is*l/ x ,nyy p6c( charge is at the origin, the second to the right at x = 50 cm, and the third is at the 100 cm mar( lsyu( cn6 px4,ff/nuyuq* 8/i1azmhk. What are the magnitude and direction 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 plqpt q3 ga0c:6daced at the origin, -2.0 m C to the right at x = 50 cm, and ta6q3g0 :dcqp +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 the followingkiccw .z.f9(mfmjldf 12f.y 2 positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1kw f9.c mfff1l(2yj .mc2di. z.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, 9 v2hbnb-hv.mb sdy 5-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 actss-m5v.-bb y2dh9nbv h 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 (0eng wg wh97. d0g73bbq, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of thebgq bh3n.09g77w dgwe 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, /ego); *tpg* xj.wnof 0.10 m); Q3 = 5.0 nC is at (0, 0).;g)xn *owjp. *oetgf/ 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 ofw(5u 8 *bl baq:,qyliqvki5u . an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which a:5a llqwui.q k b,vu(*y8 5biqcts on any one of the charges?

  Consider point charges of +Qgz tp/,uma7yzpzw k m4.5a6n : and +4Q, which 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 electrostam /k5p, pgaan t m:u4y7w.6zzztic force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is 0i ujxgc1 33pzat x = 4.0 m. Where on the x-axis can a third charge be placed so the net force o u0 p3g13czixjn it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wh3 cep(t;oz lwo q0h2s-/s*q ioere can a thirp0 li o *-w(to3s/2 qqsohe;czd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass1z, ewp8*;5 ntiqzldi 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 attraction of a fixed- jjep)/s,5fun ssw9 kk8a4 5h3 yzrvo proton some distance above it. How far ab powvjea/3z-huk54sjsk fns9y )r,5 8ove the electron is the proton?

  Two 0.20-g metal spheres are hung fromqc, id7p*m- xt a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until th qt *i,p-dxcm7e angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a cha j4*5 d2*lckgli9ytk frge of +40e. What is the magnitude of the electric field at a distance kif4*5 clt2*klgyjd 9 of 1.0 m from the nucleus?

  What are the magnitudj 0 s8cg5j.t:h7v-xwv8 ogaaje and direction of the electric field at a distance of 1.50 m from asj oj.0j:h8cvga-txa7 w8gv 5 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. bj rk)7-8g*rz.oun dgWhat is the magnitude of the electrjo*br.7g 8 gkdzu-n)ric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Wh96(dc/hx zzpi 1 ohfyqcf f,78at is the direction of the electric field9diof6fx c( fhz 1 yc8qhz7,/p?

  A 5.0-C charge is 10 m e 7pz)o 50xkdifrom a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge plo50d i)pxek7zaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separad76(rt;57nbpb zhq6sxu k,t tted by a distance of 4.0 m. What is th5qhntbt 6( kx6 rd; b77zstpu,e electric field at a point midway between the two charges?

  A 5.0-mC charge is plac3h2vzi/q p*:1yg a* yp teai*qed at the 0 cm mark of a meter stick and a -4.0 mC charge is pq2* ga 3p*iz/ yvi y:thae*qp1laced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed 576fvg 04hft+ b0r mlzp1himuat the 0 cm mark of a meter stick and a -4.0 mC charge is placed at thelpt1hu v4hr6 m0fbf+5gm7 zi0 50 cm mark. At what 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 placed at x = 0 and x = 0.2 3.3emwe rkrf 3.o(tj*xwta;e0 m. What is the magnitude of the e.e 3. em*trxrew3;3 aokjwtf(lectric field at the point midway between them?

  Three 3.0 mC charges are at the thrmcx/j6j9 qdm8uy e, 0uee corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field8mej9y qu u, d/60cxmj at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are plac3s3pb4bpb2r n+h t5pzed 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 squares zp3b3t52brh+nbp p4's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placed invqwc3 dkd i4/vo+ -6kg a uniform electric v kqgidc4v-wk+ 6o3d/ field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a mass0il64l5uf( v/rvfu 6m0untx v 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 ft/ -q:ns7vihn6x of7 an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fo 6vitx:s7h oqf- fnn7/r it to be suspended?

  A foam ball of mass 0.15.g )gnu7eptuxtic :m 0tm1w940 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 direction of the electric fieu7 egm )4wmt1 .ixtgpc:tn9 u0ld?

  A metal sphere of radius 10 cm carries 4x kqois4c+ 18izr j*ta charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the s+ io84zr is*k4x tjq1cphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What -w;z;+ iszyzd is the electric field 6.0 cm from the center -siz+;wd; yzzof the sphere?