State the law of conservation of electriu,.q78(;7uctqrdzgi; ek)dtbuh ) qqc charge.

  Is it possible for two negative charges to attract each othe8my2-4ifei m.g (wdrb0es mr*r?

  Is it possible for a positive u n:4thb7y((jcg;bt iand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durings.z w ouf/i*v*fb8dp ;vz (:tn the process the glass rod acquires a posi ;v.v zzd*u o8i/f(btf :*npwstive charge and the silk

  A proton carries a

  The model of the atom 9 luouo.) p3aashows a

  A neutral atom always ha6kpphtuyh1a ig1( +i-s

  An atom has more electrons t 6h8opm:etujuc (rz41g.)nvbhan protons. The atom is

  Materials in which the electrons are bound very tightls3g/:wf xl nk4 e4.wnyy to the nuclei are referred to3/ewxy.: 4knsngf4 wl as

  Materials in which the electrons are bound very loosely to the nuclei and ca0inqwloq/a8 2f1,xp pxkazq*n c- 16mn move about freely within the material lpaaq1-noq p82kx*0, /xz qm 1win6fcare referred to as

  A negatively charged rod is brought near one end njvn29ps+t 8qchj.:5niy eh1of an uncharged metal bar. The end of the metalh nyj5 e2ncs q+ .thivn9pj18: bar farthest from the charged rod will be charged

  Sphere A carries a net positi3zt9l aa 2rzz1nd l-h+6ij v8eve charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere Bnt2d 83iz-ez9l 6lza1vha+jr is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged roa.cqv :9njax nf6cy) /v.f3hfd charge an electroscope positively?

  An originally neutral electroscope is brief u/mcyqff -(5ow/)po z(jqkn- ly touched with a positively charged glass rod. The electroscop(-mf qpc)j-y (k5q zfwu/noo/ e

  An originally neutral au-rq39vmf*c 9n:hy3 /t pv cqelectroscope is grounded briefly while a positively charged glass rod is held near it. After thevu9yn:-9q/ct33mq rpfa vc *h glass rod is removed, the electroscope

  A positive object touches a ntw575wv(c yhs jya,t*h 1n:jneutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does nots5,:atjh7t hjycw 1n*wn( yv5 touch it. What happens to the leaves?

  A large negatively charged object is placed on an inozma4,20qcvm;+/2 yig h r bdusulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second n20i grm + 24cab/m,uv dhqyo;zeutral 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 the Coulomb ch wh.1 0gg*ti29;to t,lfkl cdonstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is laqqxi2g6 gxz/dq,rro/7 o) p* erger in magnitude than the sec,xr2q/oi7p)x/eg*rgdzq 6 qoond charge.

  Sphere A carries a net charge and sphere B is neutral. They are placedu-m-gm vt(u0 x near each other on an insulated table. Which statement besg0 vxm muu--t(t describes the electrostatic force between them?

  Two charged objects attract each other wi z3xcm5f 2tc9rth a certain force. If the charges on both objects are doubled with no change inx 5czr23mt9 cf separation, the force between them

  Two charges are separated by a distance d and exert mutual attracti9p-orhcj *b; 8ox c :hjlb61nsve forces of F on61;b b oxcj-rnco9hhjs* p:8l each other. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each*0 t-jmvorc j4w5ua8f other with 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 one-fou r -cfmo8u5wt*0 4ajjvrth its original value? The force is now equal to

  An electron and a prot30f mqya2zia3on are separated by a distance of 1.0 m. What happens to the magnitude of tya2zm03 afiq3 he force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are sep50u )ch; r )8 exrk9m,eurhpxxarated by a distance of 1.0 m. What happens to the magnitude of the force on the fe 5rh h)u9xexmkp r8,x);r u0cirst electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 mwze4 opc iz*0t9 hu-u,. What happens to the size of the force on the proton if the electron is moveduz04* wu- peoh9z, tic 0.50 m closer to the proton?

  A point charge of +Q bhhxwx, 7:tasz 5o5xu9/vi/zis placed at the center of a square. When a second point charge of -Q is placed at one of the s iz,ou /xwaxh5tzx/9:hv5b7 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 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 z )f(-kkxg s tg6dzk zw3i) cn6j)z6;qat the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic for;kwc6gd zq)(i3gfs)k nxt66z -) kjzzce 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 affmp*, dzz.1 6 bcscd. vector?

  At twice the distance from a point charge, the st - ecmm1csxe6b,u4c16i crx+zrength of the electric field

  Is it possible to have a zero electric field value between a n*q90h+6 x ndzveamw2x egative and positive charge a+x wha2qnd 0v 9x*6ezmlong the line joining the two charges?

  Is it possible to have a zerv ujnak.,494 wjnsa7egmde c 0(0j;wfo electric field value between two positive charges alonwjadw04nvsj7(ke f u.9am0j c,e g;4ng the line joining the two charges?

  Electric field lines near psitiveq:zoyu,uuf.)co4 md tjhw0 vrti8,t.dyx* .+ point charges

  The electric field shown )ed)zv d 8jkv2

  Can electric field lines intersect in free space?ga 4xme*pukx/6 (y u,k

  A solid block of metal in electrostatic equilibrium is placed in a yt e +*pooak4.ery ,-g:s(ecf 2wh0me uniform electric field. Give a statement c+o. gp02y*e( yc,esae-hwm e4t ofr:koncerning the electric field in the block's interior.

  If a solid metal sphp ,*)xp rpa)+ev8zj6,w 9o+whdj byesere and a hollow metal sphere of equal diameters are each given the same charpa yb+)wxo9+,,h z)pjs *vee 8jw6pdrge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a+ 0uqiqqcz-g0 region where a uniform electric field is directed straight+u 0ciqz-q gq0 upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic amzllkr lb/4hd; nm -r+ -sf :vt3q5:gequilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sp gq6 c4ytg;il*k;n3lk here that is grounded. As compared to the case without the hollow sphere, the electric field at a poin3yqg g4;li;6l n kkct*t directly above the hollow sphere has

State three properties of conductors in static equilibriu45n zoe6s3kugm.

State Gauss's law.

  The charge carried by one elec0rdm)a opwr k c br2ur81( 8/smxt-.fctron 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. How many more protojfs jo7 1*m(cr(pmv /zns than electrons d(/sv *mf7mp1j rjc(ozoes this piece of plastic have?

  What is the charge on 1 kg od0l u7n,rqsr3 8lx(rxf protons?

  An atomic nucleus has a charge of1dvc e(;rqy-mf 9wplw;do 5r9 $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated by 1.5 cm, hav.42em o:c 7ifc.iebt re charge values of 2.0 and -4.0 mC, respectively. What is t.cfce.oii7mrt e 2:b4he magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, a3p 4.5t f5tj fiekftb6nd the force between them is 1.0 N.b5 k.f3f6jp it4t etf5 What is the magnitude of the second charge?

  Two 1.0-C charges have a fy ;mzz 3patx6*cmp * -5te9qrzorce between them of 1.0 N. How far apart are they?

  The force between a o/ozoy5 054+pv eoyoj$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experien.d 7b:jii h2+tqejx8oce a 1.0-N force. If they are mojiebi7+ xj82h.:qtod ved to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point chargesfxvjf3o8/(s f 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 electrostativ(83/xs jfoffc force which acts on the charge at the origin?

  Three point charges are place:jw:; i9 hd8; su1imzkkwx9h3x7fxrb9+qc sr d on 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, and +4.0 mC at the 100 cm mark. What are the magnitude and direction of the electrrz:wdi9kijkq mx8+wxs;r:3h97 9 fs ch;bux1 ostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC a5bhe,+ce wrqy qcm15d+h )r4k t x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Whcehqrd5 e+)ry,+mc5q h1w4kb at 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, and a second point cha39 ,s ie;kvralf cgm+.rge 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 s+ 9acmlf3;kv e.g,rithat 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); Q3 =;r k*h;b5zmalf )v5tl 5.0 nC is at (0, 0). What is the magnitude of thea;;5 z)ht5fb*r lvm lk 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); Qqp t4 1ysit2:6 wcn 2wlsu-z0i3 = 5.0 nC is at (0, 0). What is the direction 1s tuil0n22 wwpzsi:- 4y6tcq of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices w9y* r a p.hha0l2p0lemo1-irof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the p ehr0* roi2l09yl- m1wapha.electrostatic force which acts on any one of the charges?

  Consider point charge3bv*w u6vm6. ij3bplqs of +Q and +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possibl 6b3pjvwlquv*i36m.b e 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 mgyx85t,, m vls.jv;o +9.0-C charge is at x = 4.0 m. Where on the x-axis can g sm,vtv5o8 l. ,;xmjya third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.mz4a 2+cj1mq.t(klb3r, l- -cgqz mh s Where can a third positive charge +q be placed so that the force r (bam2+hzqcsj,t z1kmm3qg ll.c4-- on it is zero?

  A copper penny has a mass of .e ojgk 9o1gv*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 attractzvs.,3wd 2r tk vdy(7uion of a fixed protody2vksuw (d3t,v r .z7n some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting xbcod ke* yh*7 ;odm10threads which ar oob*md*;7ekhc1y0 x de 30 cm long. 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 magnitudebp2)ko69yuzoh:: 7 /zc pvsur of the electric field atk ubvcp6:/ zh ou9):ro 7ypsz2 a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electricuo (xn8wh:a8k field at a distance of 1.50 m fr8nx8h: wu (okaom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ol/id: n7 67it(i2p3phn af;ynb5 lira f the electric field at the location of in5lirpn;nabd pi6: yi7/ 27th al(3f the test charge?

  A 5.0-C charge is 10 m from a small test charge)dc/vw;0(ho tbn nh o). What is the direction of the electric nw h o(cht0d)/v ;o)bnfield?

  A 5.0-C charge is 10 m fromxs z+kx0l 5nsg*7u cx, a small test charge. What is the magnitude of the fx,snxc *l k75+0uzxg sorce experienced 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 aj.l-, f(6)zitqd e9tfbis c7ynd are separated by a distance of 4.0 m. jd67t)itf yb9fle .qciz- (s,What is the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark oe2l5g. qryhtn -p4g;bf a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field at t qp;4t-y lbe2ggn .h5rhe 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm3pf0 5nok 0sil n6cs/v ba,ym+ mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark s 0 , n0n/ykbsiocm6+va5lf3p. 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 i2m3b2wl9w4;u:eqkf d /j01xiuiwb pat x = 0 and x = 0.20 m. What is the magnitude of the electric field at the u2exbi 1fwb3l uk9d /w:pwj2qi4 mi ;0point midway between them?

  Three 3.0 mC charges are at the three corners of a square am( a;ms mbx3;f 3maw mgf25ew wv,)s9of side 0.50 m. The last corner 5wsa 3 aamm m 2m3vm9fb;e,wwfx(g;s) 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 arsdedz x4*7sp: e placed at the corners of the square as follows: +4.0 mCe dx z*d:ps74s 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 charge of 5.0 mC when it5tmulq)3z.qb,jm hf/ is placed in a uniform electric field. Whtq l,hj5)/ mqbumzf3 .at is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has a masmam.97 kl auzkq*/h9w f f6tj7s 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 lmua2r(;( gx 8blhij.-o8agf N/C pointing downward. What x2 albggr;ufmhj8li-. ( ( 8aocharge 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 is pla)yi zmwt283t* 3mui ojced inside a unif2wi3zo3t)u* mmt8y j iorm 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 mn(ux: z4 r.pgmC. What is the magnitude of the ele n pmrz(gux.:4ctric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the electrkggt1rl d;n ( o57ae2nic field 6.0 cm from thend7152(grt gaelkn;o center of the sphere?