State the law of concr gj8nud m0) 6g+df*yservation of electric charge.

  Is it possible for two negative charges to aqm xbj, ,+(ub,4mbki h ks*.qwttract each other?

  Is it possible for a positive and a negative charge to ad0*hg kt)ydp k+;r mr5ttract each other?

  A glass rod is rubbed with a piece of silk. During the pr8fx liztj8b o1a,848y r+a4i rpemm,eocess the glass rod aca8tf+84pm1 l ,i era yxjm4ebr,8z8ioquires a positive charge and the silk

  A proton carries a

  The model of the atom show:5t.icbzm b+.q*z )e*hfa doo s a

  A neutral atom always o* or 0uw +fy.0blyhm0 9id+onhas

  An atom has more electrons thyq1g/ sno wn. )n2 t6g hg:/-fcdgd8dtan protons. The atom is

  Materials in which the electrons are bound vl)t+gtyw bmha; ) *9,m,vuk qyery tightly to the nuclei are referredwlh)mk,u9b+a gm,* t ytv; yq) to as

  Materials in which the electrons are(. vqkdlr8 phq*b7z k7kn3uufk0 wa,9 bound very loosely to the nuclei and can move about freely r879zqkunb7 lk 0h *p.3vd( q,wukfkawithin the material are referred to as

  A negatively charged rod is brought near one e-;cqp; 7i i vgut/oj.jnd of an uncharged metal bar. The end of the metal bar farthest from the charged rod i7t;ou/gj vijp- c.;qwill be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are nh: hb j7(1cszp96pdg placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grg:96 7(hp1bzhpd cjsnounded. Which statement is correct?

  How can a negatively chargeds p8a0yuw,8k.n dyx1d t br:(c rod charge an electroscope positively?

  An originally neutral electroscope is briefly l.ws *vjv5a;u touched with a positively charged glass rod. The electroscopuj 5svl* v;w.ae

  An originally neutral electroscope is grounded briefly while a positivh.xw 3kwfp+ 7gely charged glass rod is held near itwpfwgh+ 3.7k x. After the glass rod is removed, the electroscope

  A positive object touches a neutral ecvp)h u95 nkdcul6t a:i85a *plectroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to thel k5:ucd 9)i*65nuptahp8v a c leaves?

  A large negatively chargedro;s (eeuf-.t object is placed on an 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 foll uore.es-t(; fowed 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 txq4 m-.mfe4 vmhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger imhytdt.p z.fq 8;l8 v n)o8jz0n myz t88v)hzto.fm;n0djql p8 . agnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. T pev6ev0j on.4hey are placed near each other on an insulated table. Which statement best describes the electrostatic for.0nvv4 ej6 peoce between them?

  Two charged objects 5dyr-: ,x gd y3gnx9mzattract each other with a certain force. If the charges on both objects are doubled with no change in separation, the force between t :r,yygnm9 3gxx d-dz5hem

  Two charges are separated a .ggxsw y-/ht/2wkd9by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mu92hg/g ds -a/t wkxyw.tual forces?

  Two charged objects attract each other o4rj5fxv zo di79. ut3with a force F. What happens 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 7f ti5.d9xvz4ooju3r 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 toi ,w+; kcz0ceb the magnitude of the force on the proton if az0e,cck wb ;+i second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happens to 9 dajy(o tvs11the magnitude of the force on the first electron if a secdj v9o( 11atysond electron is placed next to the proton?

  An electron and a proton are separated by a di +bh g7zm)2ros.bmg3 astance of 1.0 m. What happens to the size of the force on the proton if the electron is mm)hag+72 borm3zsg .boved 0.50 m closer to the proton?

  A point charge of +Q lunxas d127qthj(z9q7:+w gt is 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 observed that an electrostatixtn qdqj + 9zalsuw:(g1th772c 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 centroirc- vd:4/fgr d7c u.ced 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 magnitude of the force that acts on the center charge due /.r-7cu:vf4dgr c dc eto a third charge of +Q placed at one of the other vertices?

  Which of the following iss 5j 99:gvq-t;wajyku not a vector?

  At twice the distance from a point charge, th3y:r x7n2 g wrhn)zdx,e strength of the electric field

  Is it possible to have a zero electric fz j.necgd54wfhw d9*.ield value between a negative and positive cfz he.w *45ndwcj. dg9harge along the line joining the two charges?

  Is it possible to have a zero elcqfpqq 1(56yd f3cwf:-iv f a9 5r7meaectric field value between two positive charges along the line joining the two chargf(6y3f cier-vq7a55pfma1qwd c qf:9es?

  Electric field lines near psitive point x a )wih6b,d+zt* vhr/charges

  The electric field sdarkx6 l7stp-g))pb 1y sqg4 )hown

  Can electric field lines intersect in3j6llpl1 fo8u free space?

  A solid block of metacj 8ln /cuc -2xh(jzc*l in electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric fieldu hc /jcczn8-jxlc (*2 in the block's interior.

  If a solid metal sphere anq hbzzf617j 0ad a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center jf7 h0b 16zzqaand the surface is

  A cubic block of aluminum rests on a wooden table inpj o vy1;3dh5c4xf,0uh v3 rxr a region where a uniform electric field is directed straight upward. What can be said concerning fhv,du o1;vp r c35rjx30yx4 hthe charge on the block's top surface?

  If a conductor is in elfonh0 uu4 -a:cectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic spd gzm;sq:9n,uc k;/xo here that is grounded. As kcnug, /x9d;:os qzm; compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibrium1) 5coq yrvwu6 b)p8io.

State Gauss's law.

  The charge carried by one electrons k .srq/ r2; 6tv(*)bjliikdx 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 chf2 d.q2ls: 92zcph gr:0rmsln arge of +2.00 mC. How many more protons than electrons does this piece ofrn 9zqd.:fls pr2mcs2h: 2 g0l plastic have?

  What is the charge on 1 kg of prot.3bqrn) 0,qmm gi: y ,yv)yqrhons?

  An atomic nucleus has a chamziu2 a l1 5hnfe3zkp61dm+vyaor):2rge 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, ha; mj0j..qh.hz q3wyip* x m*alve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric f h3.x.w0q.*yjal imqz; pj*m horce between them?

  A 1.0-C charge is 15 m from a second charge, and the force bet*eob r5 9cz1qpween them is 1.0 N. What is the magnitude ofz19c epb*q5ro the second charge?

  Two 1.0-C charges have a force pb5+jln:ve .fou 48g pbetween them of 1.0 N. How far apart are they?

  The force between a tu gc;0:ty j6 5xl:mzruko -*z7 lqxx:$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm0w (ixs e1h9c.5wufo z apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric forsx0zi5wf.o(1 wu9c h ece between them?

  Three identical poinika6+o lo g*e(e pcr,a6og:0at charges 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 of the electrostatic force which acts on the charge ata +i:o,a l (ae6ockpgreo0* 6g the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC t(k ,p8i:nfbf cu8mtp* n6mvyxc/,w,is placed at the origin, -2.0 m C to the right at x =ff8 b/t*, n: uc (nwmcp,i8ky pmxt,v6 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 located at tz +9uwrmg(s., d+pyeehe 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 they+egw9p.eu dzs r+m(, force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a squan3b0 fc02, gue) 5ificf lkec,re, 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 nu fec5lf, kig20b,fc)0ci 3ethe 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 a -hlz1bi*f -j,rfv9j h yffl*h(y60j mt (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the f9ymzifjj-, l(*h6 -lr hyb h01 ffvj*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/apvbibb -yj 00.fsl2mv3e 0 w.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the nw2 .jlm3- ap0bveyisv 0bb/0 fet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the verticesk(qqawfge(9+35wz7ptz2nqdd -t6n ,2s z cha 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 th 7gww5 h2qt t fz-n3pq+k9eda qcd2sa(z,(n6 ze charges?

  Consider point charges of +Q and +4Q, which ggz3p8pva 6c9,saxfx 3(*lufcx dz c- fc9c5+are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a charge6sxu9ca5x+ 3g38-gc c fvlcza9cp d*,f z(pxf 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 chargt+7 sxkbw-v d nj3hogu;:+y3j e is at x = 4.0 m. Where on the x-axis can a third charge be plajxy +- d3 +gnvkhw73ojsbt:;uced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = i1z 3bf) wow6ci- (q-6msnd js2a. Where can a third posim iq wob66n3)1(w-si-jsd cfz tive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3ua4-ops m x04/chf5 yzn-an)t .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 ofjm g *dt--ykqh( p upad (2co::gx.bv9 gravity by the attraction of a fixed proton some distance above it. How far above the electron is-*xav( :o-cd(g.:h ktg p q9jdpy2ubm the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threads 0(aef +)k(agrovz,a0iu vb d)which are 30 cm long. Both are given identical charges, and the electroi ozb+df(g )uv(aa)r,0ev k0 astatic 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. Wha8s(c ypg: 8j 9qm.jrpet is the magnitude of the electric field at a distance of 1.0 m fro(qs9crpe: gp.8jy8 jmm the nucleus?

  What are the magnitude and direction of the electric field at a distan eo ku1 xvje0l .mbr*ff61/nw2ce of 1.50 m from a 50.0rvk1f 2j wfb1 x /.0n6eulome*-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What i )kk.l v/xs3 9cwh(bcrs the magnitude of the electrx.l bhkr ks39/c(w)cv ic field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the directi.:ctr*1pxuxth tg t61on of the el t xrpxh.1ugtt:t*61cectric field?

  A 5.0-C charge is 10 m from a small test charge. What is th+eq/hxe7e* o j(m *gefg)u/q ne magnitude of the force experienced by a 1.0 nC chagee /ogn)hj/qm fq+7* u* x(eerge placed at the location of the test charge?

  Two point charges each have a value of 3.0 Cm5 f j7p5ylgl. and are separated by a distance of 4.0 m. What is the electric fg 5plf7l.yj m5ield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a- )36n r;dvz; wbf+mebuovr,m meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at thzv;3v+)rfd,m-6n r wmo;bu ebe 30 cm mark?

  A 5.0-mC charge is pl 2 lar 1ewi1z *hf56jzzifr44caced at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining z16r4 rhjzc 1zielf*i5 aw4f2the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC a m) ju6fw2,d 1ut; j9okybij(pre placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwayj wfkj ymt1 jiup2d(9 );b6,ou between them?

  Three 3.0 mC charges are at the threeqp.us 2w-j+::4f ;oryael4q yudk ze , corners of a square of side 0.50 m. The last yj+l 2p:.u4e,u4; qr:sazf- eq kwyodcorner 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 the corners /6xb7bu52tobi -f( jqcj d wj,of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC b,/(o2 jbjbf -dq c6t 5ijxw7uat (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 charge of 5.0 mC when it iskxnb08 3mntg 7t-z*c zl5w yy*u53jnz placed in a uniform electric field. What is the magnitude of thiszz b cnnznxt5k*lwu3y-t * 0jy83m5g7 electric field?

  A particle with a charge of 4.0 mC has a mass; u cy b4:bf:oof4j)yn 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 N/Ce( xs 2zaba c(yzv-n87 pointing downward. What charge must be placed on the ball foxa7e ysc(b 2 -n(zz8avr it to be suspended?

  A foam ball of mass 0.150 g carries an )y7avhm73au- ua8gf8o qbd 0 charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the foy8a7u a0m)hvb nqgud38 -7ofarce 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 is the m aq 9kicj.h sh:8vl7;sagnitude of the electric field 5.0 cm fri;. ah8csjh:l9kqs7 vom the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What+ a g+)7lgyols zjm3kw5+y/sj is the electric field 6a/+)gyysj3km7jw log5l s+z+ .0 cm from the center of the sphere?