State the law of conservation wk8a z0h1qq7bof electric charge.

  Is it possible for two negative charges to attra.8t0dsc b,t0p v8zfwl ct each other?

  Is it possible for a positive and a ; ls9slg b,iryhfa .ev3-9bz7 negative charge to attract each other?

  A glass rod is rubbed with a piece of sirj/ ghw7fcydlj/,7r. 3s8pksck 9he-lk. During the process the glass rod acquires a positive cjlwey k./cs8ks77f,d/3h9rp crh jg-harge and the silk

  A proton carries a

  The model of the atom shows af81b 2hd8,rmg2dsot n

  A neutral atom always0oesg p +q*0ty has

  An atom has more electmp)tr;3rvmq8y h :)sjkpdizy21 afe x* (c)x -rons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are rvx( eo(64 aoith+n,hreferredhotr +hn e4ai xvo,(6( to as

  Materials in which the electrons a j b;jew-cc.s1g96od jre bound very loosely to the nuclei and can move abouge16wc-jo bc 9;sjj.dt freely within the material are referred to as

  A negatively charged rod is brought ne + mmzvgsj8 .z) e-bhtha+ye*w6; tzm*ar one end of an uncharged metal bar. The end of the metal bar farthes-)*y+ht 68m+s zeza vtzgj;m.bwe m h*t from the charged rod will be charged

  Sphere A carries a net positive charge, and so q1 m8 v*t+ ozj/;u0sikb(iodphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire iqvz /oo1i8 0ujk(tbm *d+so ;that is grounded. Which statement is correct?

  How can a negatively charged rod charge an eq.n* 6u8c jg;l57j/jyg .o:lf f sucnclectroscope positively?

  An originally neutral electroscope is briefly touched with a po20 o7/knbbanbooy5zj dl 5s;21lhm-xsitively charged glass rod. The electrosc5a-1kl/ 22by5m odjo xlszb;n7h b n0oope

  An originally neutral electroscope is2+l /lfq 5 t+d 7wfjzz 04:oawi7vpwmy grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the ei0yw+ptzlfwzl5qf a/ 7 + vm2: 7djow4lectroscope

  A positive object touches a neutral electroscope, and the leavesp xrp9qh4. rz. separate. Then a negative object is brought near the electroscope, but does not touch it. qx9rp.z4hr.p What happens to the leaves?

  A large negatively chargedasc 93f aep0,d1fcre; 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 p ,ecasae3dc01ff9r ; 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 txmnw m bx8*29vhe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated qp p uu3fs9f.dk94s;l by a distance d. The first charge is larger in magn f 9s.spulkf;d3 q4p9uitude than the second charge.

  Sphere A carries a net charge and sphehtx*) gw- pq p8md:wth::ot.xre B is neutral. They are placed near each other on an insulate xdpmqx8 o).p-w*wht: hgtt: :d table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. fsg pmo)c-6nav7b5c: If the charges on both objects are doub bgc6as) cfm5-p o:n7vled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual 9.ooahk 6,vh dattractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutuad ho6 9ovah,k.l forces?

  Two charged objects attract each other with a force F. What happens to py(.k bv)c8rxmye/u, the force between them iu()yby/e.xmk8 v r p,cf one charge 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+fwt bcpd -+r8 separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electronbc-w r ft+d+p8 is placed next to the first electron?

  An electron and a proton ar7:-vkh0k;f p.b2egc thyt/ toe separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second ele2y0f.hev -bt/t7 p gtck kho;:ctron is placed next to the proton?

  An electron and a proton are separated by a distance opimu (3pdy .qb/ i- tkcp5/5raf 1.0 m. What happens to the size of the force on the pt(y 5ukb3/.d-qa/icmr ppi5 proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at/8a91bw 4 g)xj m yd/lysz.oc9uiz fg6 the center of a square. When a second point charge of -Q is placed at one odlo6j 9 ibz/zy8 sf9 m41xgc.y aw)u/gf 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 *yb9n f4n.jss placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostaty.b 9n*js 4nsfic 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 a vect7tp k1xkj .m:dor?

  At twice the distance from a point charge, the strength of thj45xc* b.+ 0fq q0xhevxe-lbue electric field

  Is it possible to have rgdca gc(fg9-+in( c5a zero electric field value between a negative and positive charge along the line joining the two chargni(dacgr f(9cc-5gg+es?

  Is it possible to have a zero electr r/6 aqsp 3qnyq-ioduf+.n(k 2ic field value between two positive charges along the line3(2adun k/ rfo-ypq.+6inq qs joining the two charges?

  Electric field lines near psitive point charg 4e+s0ptzsqr5 es

  The electric field show *g3vo7o5olza n

  Can electric field lines intersect in free sp cl8a29+.a 4e4c - ihhzz;vlmgqv/bnlace?

  A solid block of metal in electrostatic equilibrium is placed in ajmfa0 :9gdvymzx j1 (oj3f9/v uniform electric field. Give a statement concerning the electric field in the block's f vm(j /vjm3jay odzxf:90g1 9interior.

  If a solid metal sphere and a hollow metal sphere g0.s80 yr +xyc 5sf 8d ygu)5byjkxti4of equal diameters are each given the same charge, the electric field (x8 g50ju 5c0) iyfyg.s4ydtyx bs8+rkE) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden tp ex9 d(pvaa*5able in a region where a uniform electric field is directed straight upwa5xp vd *e9ap(ard. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibr.hsmo:6k4pp :e4(qmnqo -l;zaq gq. nium near an electric charge

  A positive point charge is enclosed in a hollo :kq .i:fhk6nnw metallic sphere that is grounded. As compared to the kf:q:.kn inh6 case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three propertiesmp79 jmo,zzs ; of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron*pj x1g7 gaj9p 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 hmy- geycjwc6xdl9 9v4w2tp2vp k45e9as a net charge of +2.00 mC. How many more protons than electrons does this piec yktvp2xed9pjye wg4 vc-w9m 4269 cl5e of plastic have?

  What is the charge on 1 kg of proto: j8rf k or/jl+o l:)db0jt5l;yr zqofs,t(s2 ns?

  An atomic nucleus has a chargsum*1rm. +ef 53+i3sndh yfvn e 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 2.0 and -4.0 mC, kfwd* sujhke x/p9(( w(e/zr0 re9hedw/j*0kzwx/(r(fk ps( uespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m fro*)h nwbkab q)q2c mj0w9)i6 pdm a second charge, and the force between them is 1.0 N. Wh)c * )bqhb)jqa9 6w0iw 2pmndkat is the magnitude of the second charge?

  Two 1.0-C charges have e i./8 b g:uid9pfh xgj9vr)h:a force between them of 1.0 N. How far apart are they?

  The force between a p.2f*, p3-wfb vnrifw $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cml +;5q,0 kakkl6k,9fbngie ci apart, experience a 1.0-N force. If they are moved,q ,lf9c; enk5klkiba60+ k ig to a new separation of 8.0 cm, what is the electric force between them?

  Three identical point cho h 7 l(4tjo1el)uj5gjarges 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 tho) t4(15jjlh 7u jlegoe third is 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 pla9orizi pc50 af 8)o*uwced 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 electrostatic force which acts ooa89z)i uiw*cpo50r f n the charge at the origin?

  Three point charges are located at t8px55*kyk(de ld:wt p 2v(apk he following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m(:2 kk(a *8lpepkdt55ypwdv xC at x = -1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center )lj k)2 ( c(yeujpapz+of a square, 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 magp) pej j ()uzkcy2a(+lnitude 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:ofybb nyg898c)uqff 8x c b 4c1xy3c:, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is t)f8 cbqcyg8u fcy1b ncfx9 3x8oy:4 b:he magnitude of the 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, 06 va/lgv3 uw/+m 4otxv.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n vvu+mg/x4 6vtw l3/oaet force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices -5 7w9e ya u.thr;ouwaof an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the u.5 7;uyrte9 ahawow-charges?

  Consider point charges of +Q and +4Q, wuayll*rgwgh49 u8 8 q.: sm- ;yp:dtcihich 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 force acting on pd4u s 9yth;q -m::lwr.gl*i au 8yc8git would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Where on .+hf oxk/w(;dkb k1djthe x-axis can a t/dbj(;1ox.w+ f dhkkkhird 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 =qu4,/8 fo*kwx i4gf zi 2a. Where can a third positive charge +q4wi/, xi4*g kf uq8zfo be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totalcmneznh d 4(ac,p,t; j9ri52l 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 for 6w4glsl78juf 1-os 6sgv.qouce of gravity by the attraction of a fixed proton some distance ab-wjsuqvlo1. lu6 sggo 67s4 8fove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconductpnojwcv7c.*7z .b04adfp)pving threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces thv p)ncc. pazf.p7odb* vj40 w7em apart until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge ofuaac nhsk jf+ .2btx/d52a;8o +40e. What is the magnitude of the electric field at a distance ox2 bhut;a/s +cfan.d5koaj28f 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a distance of 1pqeogz, k a2 g9+t)j1i.50 m from pjz1+gq9oge 2) ta ,ika 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargey+* -ifdrfx.k . What is the magnitude of the electric field at the location f f-y*di .kr+xof the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is aa,))bl iaf8qpun g jjv 3b)64)dg r:sthe direction of the electriclbdg8v ,)6j4 a)nraq) bj:pu3 fi sa)g field?

  A 5.0-C charge is 10 m from a small test charge. What is gzgq8m2lp o+. the magnitude of the force experienced by a 1.0 nC charge placgq+2 l8g.zop med at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by 6;x kik0:cr ma 53udgwrijd/:optt 97 a distance of 4.0 m. What is the electric field at a point :a0wdx6 pkk75jri c9 umt;o/3tdig r: midway between the two charges?

  A 5.0-mC charge is placedr2/x4b13nfrrzs6 o*, hqccvgo1cc8 w at the 0 cm mark of a meter stick and a -4.0 mC charge is p br1vwcr 4, z1n2ho8roccq/6 cfs*xg3laced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is plac gs0w)m jczc1;ed at the 0 cm mark of a meter stick and a -4.0 mC chargezm)jswg1;0 cc is placed at the 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 = ytkv5i)sf u n )k v)uc17dn92d0 and x = 0.20 m. Whu)n)d f)92tsk5vvni cu71yk dat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three cornbvs f 7b+7yd r 3mmb52oi/my+sers of a square of side 0.50 m. The last corner is occupiedibbb7+vmys sm37of d5r/y 2 +m by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m5y b( d9vvlmfdk4n;l owm**k: on a side. Charges are placed at the corners of tvk4n:of *wld*(; k5d ymmbvl 9he 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is placef+6u;aal k /sw u-t3drd in a uniform electric afa 6;krw3t/lu-sd+u field. What is the magnitude of this electric field?

  A particle with a charge of 4.0d u6d 2y;blr3g mC 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 600l9cg ks4xsfe;yljz2( +;6 k pz0 N/C pointing downward. What charge must be placed on the ball for it to be suspend2 l;+fg9sz ycjeks (p6;lxzk 4ed?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is plac0)zs 5t8jje/ny7rm( jzpu 2sjed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?eszupr jjmnj0 (y5 j)s28/ 7tz

  A metal sphere of radius 10 cm carr.2y*./aqbfbf n0 r/mx3 fz nizies a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surface0fnri /n/fzzy3bmq *abx.. f2?

  A metal sphere of radius 2.0lxg;swx+te 46 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center ofl6 4te;sx g+wx the sphere?