State the law of conservation of ele/ (imbgfay :g5ctric charge.

  Is it possible for two negative charges to attract each othis tk52;d wke2-w.kxad q6/qher?

  Is it possible for a positive and a negative charg/v zu5-e, yp5 4npzsbs:bw zvkij5t ,0(h8mhu e to attract each other?

  A glass rod is rubbed with a piece of silk. During the process 94yqdv;g w+u*7ra yix the glass rod acquires ayy ;qvd+7iga xur9w* 4 positive charge and the silk

  A proton carries a

  The model of the atom shows .j7ale+ f0 4no7o1 +;euotaeldc;quha

  A neutral atom always hash q.;5zif, w3lj (y)9qld yh+wnwilx)

  An atom has more electr : zhj qyt.ry1i5-a0nfons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei arein* a;op7 r0f9iopjlq0sr)na 8;8zfh referred ) r*8hli7zpa;r 0 nq pnjs9aifo8;0 ofto as

  Materials in which the electrons are bound very loosely1 ty1k1 ah(f 2zuso:xx to the nuclei and can move about freely within tt:ox1zufyskxh12 (1ahe material are referred to as

  A negatively charged rod is brought near one erc x+s 0o,h9,z cjd ,z d5ieuxm1g6qz,nd of an uncharged metal bar. The end of the metx0qo dg,c ,d+6j1m,s,x zzu9ecizrh5al bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B2z+n(xgxvm9u o er-3d;xus6 m is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is com3uog2( xr+ vu ; -9xdmnzexs6rrect?

  How can a negatively charged rod charge an electroazjiw ws0df0/9 ;vfc8 scope positively?

  An originally neutral electroscope is briefly touched with ot80sprynb60 a positively charged glass0 0s ytnb86por rod. The electroscope

  An originally neutral electroscope is grounded briefly whizl1c5kk ;dm2um oj*e i6zs:2gle a positively charged glass rod is held near it. After the glass rodze ogl2k i ujds126 5mmck;:z* is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. 3.k7+nvnjcgslaef ,l vf;qol/2 +d3 w Then a negative object is brought near the electroscope, but does nq ndolls 2af l3k .fjwncv7 ,v3+/e+;got touch it. What happens to the leaves?

  A large negatively charged object3o(f kdl( 0fderglxy o 31r+e3 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 followed by the first ball, strikes the first ball, a(xy3f3(lolroe3+eg0dfd r 1knd 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 th* sph*qyt5gpv8g +cdl+)j t mm2f1(y re Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by at.k4) uuj mu,t7qa kvae1 q6t( distance d. The first charge is larger in mmk4)u aj(tu. t6k7ta,vuqqe1 agnitude than the second charge.

  Sphere A carries a net charge and sphere B is nhg ep *1 m(dhuxk-fnmx8n2l/-j/ hf8 smm+w)leutral. They are placed near each other on an inhd2w snh1 l8mg-u +//lxe(-nfx*pm)8 m fj khmsulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other witha4fvk +ra/(a1(p w31iawau+7vyj le z a certain force. If the charges on both objects are doubled with no change in lra a 4 ju +vf+wvaaw1( 3eyia1/7pzk(separation, the force between them

  Two charges are separated by a distance d and exert mut( :ajx. lpbxn (bu.q8bual attractive forces of F on each other. If the charges arep8l (. b(nuxq.b b:xja separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What q5 ba azk- rsy- w3ior65r4-mshappens to the force between them if one char-5q4 5w- -rkorisy6rmszaba3ge is doubled, the other 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 j 6 -b my, .derb9vfg4s8wo5illdv)v-by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a seco .6jvw45 evd)sg-d9-bbol,m f8y rivlnd electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hapfvtdk2pe*(/b-+uw 9o bx4b plpens to the magnitude of the force on the first electron if a second electron is pv*dfu/ e (ob w9b2t4l-+xbp kplaced next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. What happens to ( go 6 cc8hhiq(chn1/hthe size of the force on th hc6ohqic/8ch( g1n (he 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 square. When a second point ca4oo6n aoy 4/ lqtu,(1phxuc/ harge of -Q is placed at one ofp1xyuo6 l , o/4(a/o4atchnuq 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 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 the3 ydnj)h6tc -o centroid 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 cenht6-3 cod njy)ter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vu .6:owo wthk,y .27cbh-y bxlector?

  At twice the distance from a point charge, thl --d8edozk09a)p v8 n9rtd3 l r1d2 (tzlenyqe strength of the electric field

  Is it possible to have a zero electric,qsb bw)sq19rgh )u:m field value between a negative and positive charge along the line joining ts rs1qmu9 bw)bqh,):ghe two charges?

  Is it possible to have a zero elect d,yslt5z9 ro0ric field value between two positive charges along the line joining the two charsl9 dzo,r5y 0tges?

  Electric field lines near psitive poinnuq 18wp2mir5 t charges

  The electric field swj- id 5m ib/d5.m(ocmhown

  Can electric field lines intersect in free su/qtkyq3i, 4*d40 oylcrgp9 space?

  A solid block of metal in electrostatic equilibrium is placed in a uniformh;w 7x4up.5yk ar7z ,hjp)sv n electric field. Give a statement concerning the electrir5va z p7,h;7j) punyh.k4 swxc field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of *z qmizlw(72e equal diameters are each given the same charge, the electric field (E) midway between * (wl2imzze7qthe center and the surface is

  A cubic block of aluminum rests on a wooden table ino7hulk 2jq)g t+zf2 *q a region where a uniform electric field is directed stra2*f uz+kg 7oq qlhjt2)ight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric chpbnhwkko q r q (ks7(v.y*-2y0arge

  A positive point charge is enclosed in a hollow metallic sphere that is groundedz klhs51mmh 4 v+*si(j. As compared to the cassi( lvsj*hmh51k +m4 ze without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertietx ,( z ycsm 70*jyv.ri2w3raqs of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one elects 3o7g . 6tweq9*meo hb-ze04yx rlv+vron 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 hass;b t*4c8fmsl a net charge of +2.00 mC. How many more protons than elec t; bsl*csfm84trons does this piece of plastic have?

  What is the charge on 1 kg pp+p.c 8j a;i (e8sszeof protons?

  An atomic nucleus has a charge; :0cdjljp9sfy/ ian- 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 chargvb q1jmf 8-(iee values of 2.0 and -4.0 mC, respectively.b8jmfv-(ie1 q What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0g2gp;;l8r*ud4 x6 kvyew pp8 g N. What8g p82gle;gpk*d6r4;ywxu pv is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart areigoq /7kv6uv/uzc5 i 8 bnp65azp+ 0fd they?

  The force between a )l ugj1j(yfls2c2 yqo59o( g x$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienr)03zb6g3. ls osxft jce a 1.0-N force. If they are moved to a new s xgb0) tsfzr3j.lso63eparation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first cf+f aq 92i3skcharge is at the origin, the second to the right at x = 50 cm, and the third is at thsaqc k9 2i+ff3e 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 placed on t .di(an;h x1z-z yvb1fwnlf-6 he x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 5 fy1v(fi6hx.;-bwn-1dznaz l 0 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 t3h qxxvbs 4b92vsey p9y .7h6ihe 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 oi 63x2vqp4y.byhx hbsv 99s 7en the 3.00-mC charge?

  A point charge of +Q isa*vod/h yg0: uudej6*0zic:c placed at the center of a square, and a second point charge of -Q is p gcu: hiczvyo j*0ad0/6*ed: ulaced 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 is placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is ati+o6vtd 9x :of (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net f+tv9x6of:do i orce on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, xe)t n s.*4bcq0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC ctb4 )cesq. x*nharge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilateral nuwmd1 +z1(n*vq,ly q3 cjx1wtriangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charge1 nv1 nwwq13ujm*yzlc, q+dx (s?

  Consider point charges of +Q and +4Q, which are separated by 3kv*7q 6qe15s0fxsv b t.0 m. At what point, on a line between the two charges, would it be possible to place a chv1fv ks5e7qq* tsxb0 6arge 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-Cgbu kexp5mv gwsc1aji4 ;05ys4sqo7-h0 m// h charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net aj/s wg 4p1cmbg -vk/u m5xsqhyio7se;5 040h force on it is zero?

  Charge +2q is placed at the originaja8u; 1t eti5 and charge -q is placed at x = 2a. Where can a third positive charge +q be pla81 a a;je5tituced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A try s/ut(hul4z *kb3m /otal 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 forcet mdn9i1,;kj p1hash 7 of gravity by the attraction of a fixed proton some distance above it. How far above thesm 11a,;ht kj9dn hpi7 electron is the proton?

  Two 0.20-g metal spheres are hung from a coa(r-w .guiha; mmon point by nonconducting threads which are 30 cm long. Both are giveniar wh.-;ga(u 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 el+uz6hn+ ps-j5w-e ioz sk60( pui5zqmectric f(n u q +p-+-6zio06usip mksz zjw5eh5ield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field cwn4 (ot) t,6lt8qpokat a distance of 1.50 m from a 50.0-nC char )c4tqpo6lotk, wn(t8 ge?

  A 5.0-C charge is 10 m from a small test ch: vlwus9b /l3bvdd8l: g8q(e rarge. What is the magnitude of the electric field at the location of the r(g8bls q8d :bd/3lu el9wv:vtest charge?

  A 5.0-C charge is 10 m from a small test charge. 1we s9htv j++2qxf(tc What is the direction of the electric fi2sx+h cteqvw f+1 tj9(eld?

  A 5.0-C charge is 10 m from a small test charg)y(s 0m * nvtbana, ,qpn46ouzn7yc5xe. What is the magnitude of the force experienced by a 1.0 t x0y*ny(65annq ns vopm 7,b)zu4,a cnC charge placed at the location of the test charge?

  Two point charges each have a valuejey7vhb 95o j:c9-x hl of 3.0 C and are separated by a distance of 4.0 m. What is:9lcxeo v95 j7 -hybjh the electric field at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a l-d n: *vt d*q:eha3n 5a:wqde-4.0 mC charge is plan3 dan:t qe*wh-:qea*5d d:lvced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placedux fyqo8it aq 8urj+.w18mogg)1zh+ - at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark1 hwio.x+-qr)+g qut1 yfa jo8mz8 g8u. 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 = 0ruhid;l/a;b);vew 3 9 g1ml4bb .dhlz.20 m. What is the mag ;e;/u z).da vhdlilg;1 3b 9bhr4blwmnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. r)uv .4y)c enmThe last cymn)r )uce.v4orner 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. Chaml3s 1 f8 5cxsje1d59 xy,xzpgrges 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). Wh5zgs p11xsx c yem8,df9 lj53xat is the magnitude of the electric field at the square's center?

  A force of 10 N actsbu0k1jmcc(+zjkk x4 1 on a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thism 1zjb j+0kc ck(ux14k electric field?

  A particle with a charge of 4.0 mCb1b 5kfs3, fukfo 2lwc2l3guu9x/q( t has a mass 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/C poef5doh.s9-g xinting downward. What charge must be placed on the ba9 dh.-e f5gxsoll for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. wn-:b tle5p t1The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and di btetp1- nw5:lrection of the electric field?

  A metal sphere of raduz-;g 9vj.ovfius 10 cm carries a charge of +2.0 mC. What is the magnitude of the el.gvj 9;zv-uo fectric 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 e. ab-2ge+jzojx1 ehb pr./9h clectric fpj1 ehx/e-.a+ gb 2ozcbj. 9hrield 6.0 cm from the center of the sphere?