State the law of conservatio kdu9/dk8omu,3 r5y9kligr3 p n of electric charge.

  Is it possible for two negative charges to attax .uui*e u tm1urj/2wnm,/im: jx4s*ract each other?

  Is it possible for a positive and a negtn,6xc)8 s.5zkb1 rvp f7egywative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Dua6 owqnc:) 43zkm;ia cring the process the glass rod acquirn4wm ;6cio3)c azq :kaes a positive charge and the silk

  A proton carries a

  The model of the atofxyk0fsw;s ek*( txx ho54w*.n3 rv ,12 jpovrm shows a

  A neutral atom alwaysxa/r: )lkzjmc er6up+w82 mn4 has

  An atom has more electrons than protons. Thnpjmrk0t)bw4, . hov5e atom is

  Materials in which the electrons are bound very tightly to the nuclnd) /f8 (* auk1*zvfojcx4l maei are referred41fnz )aclf*a (/dmojxvu k8 * to as

  Materials in which the ele+z5c2 gwr6iv m:ng 6d9agm9p nctrons are bound very loosely to the nuclei and can move about freely within the material are referg69 65+gmdwvnazcgir 9p2 m n:red to as

  A negatively charged rod is brought near one end of auj8wi a(0x;c 2kgba ugv ,nb3n(n42qen uncharged metal bar. The end of the metal bar farthest from the charged rodx(gcqiv04j32;g8 (uaban n b nw,2eu k will be charged

  Sphere A carries a net positive charge,u:/ wurdr +p8i and sphere B is neutral. They are placed near each other on an insulated tabl: dw8/+ui urrpe. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod c2*y/lgazeg igb6o bb fvd)d+08 )upyzv/-rr4 harge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively charged-zaezt2-j/ss2z w2xz glass rozz /xtzze-w2 s22jsa-d. The electroscope

  An originally neutral electroscope is grounded briefly 7dbtd un*21j cwhile a positively charged glass rod is held near it. After the17n2*j cdudb t glass rod is removed, the electroscope

  A positive object touches a neutral electrosq9hur m1itbl* 3:ddj5 cope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touc3d 5:*b9idlum rqjth 1h it. What happens to the leaves?

  A large negatively charged object is placed on an insulated tahs9 l0+kjxl 1 v5+vxac4rwyms:ax8 x4ble. 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 sto y +4a:kx9a48v1h xj5xmlss+ wx0 crlvps. 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 oqd292)uerwsen m,x *constant $k$, which appears in Coulomb's law?

  Two charged objects ojvtcs l90 nht t82:j9are separated by a distance d. The first charge is larger in magnitude than the second charh2cl0njv t9s8j ot9t:ge.

  Sphere A carries a net chargnfg.4erm3ns 70n. a 1lolb1+thlfvh .e and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the fs0e lh3 .ov.anrh+1nllm7.1fbt g n4electrostatic force between them?

  Two charged objects attract each other with a certain forcwgos- +u w1m2me. If the charges on both objects areu+ gw2mows- m1 doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive for m5,,vlwenwu8hj 24rgces of F on each other. If the charges are separated by a distance of 8 lwgj 5,hv, n4w2merud/3, what are the new mutual forces?

  Two charged objects attrac70t2sdsj* u0wqewfn ia6.t j7 t each other with a force F. What happens to the force betweenwwq7tuejnd.6* ass ftj720i 0 them if 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 separated by a distance of 1.0 m.noz-6/n p4 nnd What happens to the magnitude of the force on the proton if a second elepzn-46n dn/onctron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What h rd2tem :ad+s(appens to the magnitude of the force on the first elec:te m2r(sd+d atron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Whu d pn(8r(q6q)e3hw9 z 1xkx oxlyt1o9at happens to the size of the force on the proton if the electron is mol pq)z (y1kdqwet 39or1hn 8oxu69(xxved 0.50 m closer to the proton?

  A point charge of +Q is placed .* .zhosv0v fp,:nulna.t6 mubj-is -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 electrostatic force of 2.0 N acts on th buu*p0zomaf -t sj.s-vl. i:n,n.6vhe 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 centroid of an equilateral triangle.gn d:yhxqm( g,,0qs4u 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 ce(,d ,yxn0sg:umh q4gq nter charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is not a vg canfae0/a kvuquj0fz(z5i, , mh(jy y)i4,+ector?

  At twice the distance from a point charge, thy++s.t 8uo613. l: f8yvhzgnp fugp ble strength of the electric field

  Is it possible to have+ 28bno2q .icx tlh-e,fvb.nd a zero electric field value between a negative and positive charge along the line joi ne28 bc.td-oin hlvx. 2,q+bfning the two charges?

  Is it possible to have a zero electric field value wre+0py1 hk7z between two positive charges along the line joining they7hp01 r+zewk two charges?

  Electric field lines near psitive point chsbsdue;h* , m9arges

  The electric field show num2-yv8p43wp*5tzk x8 o-dj bww xm7n

  Can electric field lines intersy.( ab0hndq-2 kj bzn;ect in free space?

  A solid block of metal in electrostati3s3dcb84 k+znwl i6pq c equilibrium is placed in a uniform electric field. Gwl cnk3 p3+8z4b 6idsqive a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamesw7ww5 f a0et/ters are each given the same charge, the electric field (E) midway between the f5 7e/s 0wwtawcenter and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform elm+a3 g1ezkq n;p zst0.ectric field is directed straight upward. What at 3 g0 kezps;q1+zm.ncan be said concerning the charge on the block's top surface?

  If a conductor is in )-f+w /fzf zkxelectrostatic equilibrium near an electric charge

  A positive point charge is en;i 1ag pim4 j2ywny78uclosed in a hollow metallic sphere that is grounded. As compared to the case without the 1y ju7a 8wynim2g4ip;hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static vo/ l)f v+ezq5hhp34sequilibrium.

State Gauss's law.

  The charge carried by one ele8/ (qoo rcd9ahctron 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 nef s(iv2pt ,/fcfe sf3+t charge of +2.00 mC. How many more protons than electrons does this piece of plastic have?+s /ep, fif(ctf fsv23

  What is the charge on 1ccuyt 80f+ iyv7 1mz; ym5g9fw kg of protons?

  An atomic nucleus has a cho (v yxd ri7m+9x5p4cdiz9 v(yarge 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 rukden28.4y :.x ligtve charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of e2n. xgikr.d:4ut8l ythe electric force between them?

  A 1.0-C charge is 15 m from a second charge, andw3o -luknd6ydx gr:,1 the force between them is 1.0 N. What is 1wd3o r-xk:nyl6ug d, the magnitude of the second charge?

  Two 1.0-C charges have a force between theq df30o0l(bjnm of 1.0 N. How far apart are they?

  The force between a 6)wigka6 90jhz qj o7y(artz.$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experienc* d/ wxozqd, mb3lg+n,e a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force bet b*d,dxqw3,g+ o lz/mnween them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first csdxlx6/z -: 8rhh806scvxi z aharge is at thez8ia-c hdh6 8z sx6/:0 vlsxxr 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 at the origin?

  Three point charges are placed on the x-axis. 63)q: v y(ft-m+clg9v1xi7oeu s bysd A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, andq3e+bi s -ys)7v69utg:o y1cfxd lvm( +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 following positions: Q1 = 2.00 mC sjt +8gl,3y/ 0fqnvmoqr a** tat 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 on the 3.00-mC l,*q*t8 snoqjg ay0v3m/+tfr charge?

  A point charge of +Q is placed at the center of a square, and 2owe: o2ibqgaeq kz ,2rv ,2u6a 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 ch6gab2, r, quk:oe2q z2wvei2 oarge 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 at (0, 0.10 m); Q3 = 5.0 nC 7g -z(s1p bl:lipi uv)is at (bsi-i p)vl :zg17pu l(0, 0). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m,*uko lkb9ef2 nbslov/ *. ;4yr 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the n* sbf 9k4boeul2y*/ .;lkvor net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an equilatmnjz c6-/2 jcreral triangle which measu 6cm2/cnr-zjj res 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are sep)v*5xi06 t1ydw nrbarr d+,i varated by 3.0 m. At what point, on a line between the two charges, would it be possible to placex 1iw5t60rydr b *a)vvrnd+,i 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 +9.0-Ckul*3nu0 dqa zr f(0povh,)w + charge is at x = 4.0 m. Where on the x-axis can a third charge be placokh300qrf u+w*p,)(uz vnla ded so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2yv*z,thx/( b mjb:8 2gzab dj9a. Where can a third positive charge +q be plaxbad(2 / 9vy zbh8*bgj:jm,ztced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. y rjn )o.4n h 1uscw cxf/f028ie00jxa 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 gnj v3zo hp:x48s u1/dqravity by the attraction of a fixed proton some distance above it. How far above the electron is 4u /8sh:oq1jzvdxpn 3the proton?

  Two 0.20-g metal spherio5 ja5n csm0iow1vi7,z3j w bz2)f- hes are hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apsz7b-o2 mwi 31fi0c5 iaznw j)oj5v h,art until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chaf( 5un*6tfc ubzw*w l5rge of +40e. What is the magnitude of the electric field at a distance of 1.0 m from thf z6tw*c5 lwnu*( b5ufe nucleus?

  What are the magnitude and direction of the electric field at a distl. 1 vvlffces/+4n ru1ance of 1.50 m from a 50.0-nvfl.ven 1c 4url+/ 1fsC charge?

  A 5.0-C charge is 10 m from a small test charge. What is theid5v r 2fejb ,/zi u50xqpg, +m)k,dvg0b0 ova magnitude of the electric field at the location of t,0i0qr/0 5d5m vg+u,eia v)p fk,xgbjdb2zovhe test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the diredjwp9 mtzsm2 7 q)2h1hction of the electric field?m 92jhhw 2d1 m)7sqpzt

  A 5.0-C charge is 10 m frvhf8z n,kui;io 8z(+com a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the tevz 8ihz+kuofni ,c8( ;st charge?

  Two point charges each have a value of 3.0 C and a+p kq,ash. 2bm9y)fhp v8g uh2re separated by a distance of 4.0 m.h bf22aumpq.),ghh +pk8 s 9yv 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 of a meter sticknd)ppnq 2t- l6 and a -4.0 mC charge is qp l)d2-nt p6nplaced at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at -jtvx/hwsk-f ,ax s3 p02kr .xthe 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At whatat02 .sxsj fv -/kxw-xhr3,p k 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 = 0.20 m. nx yhe8;zp 7 72zun;ja What is the magnitude of the electrxhu2y7jp8a; zz; n7enic field at the point midway between them?

  Three 3.0 mC charges bk9hhv*bp1 6dare at the three corners of a square of side 0.50 m. The last corner v1hb9dk *b6h pis 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 f2-y dkp95zus7c4 q ckcorners of the square as follows: +4.0 mC at (0, 0); sc 594f7pykz- k2dquc+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 whbv gkg,b a x9,*.k-uwden it is placed in a uniform electric field. What is the magnitude of this electric fxwg-gk,. b9d*buv ,ka ield?

  A particle with a chargef(0hsp a : xwd8n;yzh, of 4.0 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 6000 N/C poiz0ag7bkvnsl 18ehqjhkxt) y27-v+q81)ky d lnting downward. What charge must be placedqkk0 glvhyt2h- s )lkyz1+) 18bae7qx87n vjd on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a chargejmi0f 7n.pq(r of -2.00 nC. The ball is placed inside 7 .rpjm(0ni fqa uniform 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 j(,t f,)aic4h;chkdbr3 n, s pa charge of +2.0 mC. What is the magnitude of the electric field ), thhs;ci4d,k(3ncrba ,fjp5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. zbw5;+-xyf)e4vy.3c ec 7nxl py7ic z What is the electric field 6.0 cm from the cene .xwf;y3 lcceb7vz + c7zny5)ip4x-yter of the sphere?