State the law of conservation of elec22tg(3/s ny b(pjxh mjq81f :(erzufmtric charge.

  Is it possible for two negative charges to attract eadp0ket5n vl.,7aexh-ch other?

  Is it possible for a positive an/0zmzeen6dlsg i297i 3l uvx*d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Duriumk -ku.ce e34ng the process the glass rod acqe4kc3 .-u keumuires a positive charge and the silk

  A proton carries a

  The model of the atom shows4x. uck,phi ju99g )a(hemef6 a

  A neutral atom alwayeu zf9e /pmstr0r4. ,as has

  An atom has more electrons than protons. The atstgx4ji/ f.oi yhyrd2i::)y:om is

  Materials in which the electrons are bound vern ( 2fw+xkt4:rgh.fz/i)z7 s1h garovy tightly to the nuclei are referred tk oi tr1.:vrznh/hf)a27zw( x4fgs+g o as

  Materials in which the electrons are bound very loosely ki:nbd o4te,bil2 j;2qo-ex :4-m nz cto the nuclei and can move about freely within the mane24d j;-bbt 4 e:l,ciko- zim2n:oxqterial are referred to as

  A negatively charged rg ) 3swmeeg.9bod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the cha e3b.)9s wggmerged rod will be charged

  Sphere A carries a net positive charge, anwwz o-i2 lt npwkw0*x xuh 2(2d2(gg1gd sphere B is neutral. They are placed near each other on an insulated tik(-o gggd2w2 (x *z2lww 1hx0p2wuntable. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively chad n9vvqtpbo,, +n,kex8f 03znrged rod charge an electroscope positively?

  An originally neutral electroscopefe )4v a3sa+9z lnhte1(rw5n2nk5 lt a is briefly touched with a positively charged glass rod. The electroscza)3l15n(str a ev+259ft a nk4henw lope

  An originally neutral electroscope is grounded briefbm/tzddi 66 e4ly while a positively charged glass rod is held near it. After the glass rod is removed, the electroszb6di/md46t e cope

  A positive object touches a neutral electroscope, and ol.b t(x 0-ha0+ ,p3boxyjqnbthe leaves separate. Then a negative objec3n-0laob by tp(o,jxb h +.0qxt is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively chargp(yspnx +3 *reed 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 a x (3*pprsney+long 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 connu/ d4+t xafv8stant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is larger i .kk c+cpj1 3:+jsmfrnn k3jf: ccskm1+. njr p+magnitude than the second charge.

  Sphere A carries a nesr( :sov hwo7s2tm84 c u-(leat charge and sphere B is neutral. They are placed near each other on an insulated table. Which statement best descs7-ou2cls h(vs e8(otwr : 4amribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chas eiq3agta 6:7e6,1rg nb;v8b 0jbgw lrges on both objects are doubled with no change in separation, the force betb7wg; g qajbi8eg6b6avt0 ls 1e,:r3nween them

  Two charges are separated by a distanos6kz3ss d5d0nzn)(s ce d and exert mutual attractive forces of F on each other. If thesznnks35 sd d0zso)6( charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. W*:zc*vc2,1s 2t lr3 qak y4ts0krrjn ghat 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-fourth its original value? The force z4l*rta *:,1yvknt gjcs0rqk2 crs 23 is now equal to

  An electron and a proton w5ot,4 ffdh z, okbdk8u:cd hvtf759 0are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton8v54 hoku,d odc70hwt:tkfzff ,9b d 5 if a second electron is placed next to the first electron?

  An electron and a proton are separateq6.d s: ey( qeva-hg2pd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron ifv-ep(a:6g.ey q2s h qd a second electron is placed next to the proton?

  An electron and a proton hc1cm46mr+ xr are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to the p +1crc6xmm4 rhroton?

  A point charge of +Q is placed at the center of a47mjooe+ r*,n y++t yw(pq cif square. When a second point charge of -Q is p(,t we+po j+c+7nf yyoi4 m*rqlaced at one of 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 the centroid of an equilateral triangle. Whe x3aetg 5lqu6 /uav+qvugkrt(5p79- un a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts utl379uvpr(-kua5gu 6qg x +a5 vetq/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 iq x bs/hv:7o*es not a vector?

  At twice the distance from a point charge, the strength of the electria)4wp h;m(qve 0f6u sbc field

  Is it possible to have a zero elewr/y ufmk7t3 2ctric field value between a negative and positive charge along the line joining the two chargesmt ryk3f72/wu ?

  Is it possible to have a zero electrilbe* gah;(v;otl +yh/ c field value between two positive charges along the line joiobhg ;v ;h/tal*e+( lyning the two charges?

  Electric field lines near psitive8dnepsa7 gh s/h6 qcrj ye *o/tc*41c* point charges

  The electric field showny)u,xdmp;pek5ju . -o

  Can electric field linesag;h s4(g i2.wju7uey*nwivu y/ l*h * intersect in free space?

  A solid block of metal in electrostatic equilibrn3t12/dh) ju(o 6 mahrmdfc1aium is placed in a uniform electrchm/ 1jt216dnd3a uro() mha fic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eac3 qqp,;;1cj7 q;qse rjzogsb 7h given the same charge, the electric field (E) midway between the center and the su3o7pjz;qq1cg ; rqbs, 7s;qejrface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform e;k -+:xdbdvxulectric field is directed straight upward. What can be said conc:dbd; x-ku x+verning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium ne vp)pv1qu7u8y ar an electric charge

  A positive point charge is enclosed in a hollow metallic stz t* ek4r3-zi zn xwxmz;)57tphere that is grounded. As compared to thnm);4k tizxtw x7etrz3 *zz-5e case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilzqcau3 q;ug;kh 8 0:.en(iaemibrium.

State Gauss's law.

  The charge carried by onr/ub5-vsf/z2ql6y ul yja( w 61tvq- se electron 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 g vm h9nrzfk1m)b(r1lq.zw 10many more protons than electrons does mrkm0gh)b 9(r1vz.f l1nqwz1 this piece of plastic have?

  What is the charge on 1 kg of zetv../mcul; 8 cfvt(protons?

  An atomic nucleus has a charguv6y5jqt s,u 1sum2t:e of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separated eei7u0wdnxhpl3xb os,gj3; j9dt07 *by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric foeux0 7ds *xil9 gj,ob w j;tpneh7330drce between them?

  A 1.0-C charge is 15 m froms7ob,c1lv 8vhf oml22 a second charge, and the force between them is 1.0 N. What is the magnitvcf b1782lvl2o,m ohsude of the second charge?

  Two 1.0-C charges have a b+o,d 8y6dcbtnb7j- a .2czyuforce between them of 1.0 N. How far apart are they?

  The force between a sikebq 1et al y9..xm1 .+0y3a*gqpbw $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiallyknh7uw.g/wu5 n3s5ts vtm 8, l 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what5nt/ s7 g tunvkl 85s3.uww,mh is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axigs s2wz,qcy-caij 2 -:+t n0vqs. 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 qcq-wzgc+ts yij: 22n ,vs-0aare 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. A chavn735yzz3 * e+e idcr/pdf fy.rge 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 yznr 5v7fyz3fc+ dped*e ./3i the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at the following :ng ofxhlomk;f h5jx/ykz2 (l0 d+a.1positions: 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 thz1(h :+oko0 hf.2;xj mflxgk /ny d5ale force on the 3.00-mC charge?

  A point charge of +Q is placed at the center ofi;z;t q/po:gr 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 thei /pog:q ;z;rt 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 at (0, 0.10 m); Qv; .71d 9tpbgxj*gursb5rd o 63 = 5.0 nC is at (0, 0). What isg6 gb*. dpbv 5r txr7d19uos;j the 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, 0.10 m); Q3 = 5.0 nC i+ x*;4z pk9c ukn,v( q-k0fyc s*piapvs at (0, uvkqvp(;,c* 4p-cz+axk*0 ikf y 9pns 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charges ofv1q-)9o (ydk b,nxwmj 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force wvj)1x,oky( 9bdm n w-qhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are se- odg lz xt7m*eszbb*a 7))+qsparated 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 it wouldzb )+ a7*xb)mzgt*lqso- es7d be zero?

  A +3.0-C charge is at the origin and)a3*23lvqqbq,r xrei4 n lw8w a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so 8qlx )2eb3v *rr wl, 4qn3waiqthe net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pjzu5a: , krd:bxhu3ysp/lg. 0laced at x = 2a. Where can a third positive charge +q be placed so that the forcku0r5 .:xpabyg3h ,/jszu:lde on it is zero?

  A copper penny has a mass of 3.0 g. Af y8)gsb+ (1,u8(hwobei2wuhg2pxpq 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 attraction of a fi9itxv0dvm iw t n,95 t7p7cyfv;*eoy6 xed 0i6y tv p9;o9e5v*vid nt7,xfwytm7cproton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hungo v19f)o 0)u pqq(qm* a6qdohi/ +wckz from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart u0+pk()*/ u1 qqw6 oaizhvfqc9qoom)d ntil 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 magnitu iyfrd)nv;jb+q czht*-f,s- -de of the electric fielqh;bj*znv fdi- ,fc-st r+y- )d at a distance of 1.0 m from the nucleus?

  What are the magnitude and d;h ;z1+e /nwg )wohduvirection of the electric field at a distance of 1.50 m from a 50.0-nCh;dnwz);/1ghow v+eu charge?

  A 5.0-C charge is 10 m from a small test chaiqvz1zaww15j;q*6 yx5yl v ji:gyf* (rge. What is the magnitude of the electric field at the location of ;a zxf1ij (5v*yzi1 jyw*qvwy6q:l g5 the test charge?

  A 5.0-C charge is 10 m from ahk: 4kjlt6*3s+ pzuc bqp(y)j small test charge. What is the direction of the electric field? )j:h qcjsp+kyb4*6lztk3 (up

  A 5.0-C charge is 10 m from a small test charge. What is txrj,j tx6/ujf0byi9f2 -gr9 ghe magnitude of the force experienced by a 1.0 nC charge placedry6xt/g0-j 9u9, jrj2fif xbg at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distance imcqn72)v6 e23ohu7 qh,x wqw)y:t lmof 4.0 m. What is the electric field at a point midway be6o2,qmhhq27itn: v 7 ) u xecylww)m3qtween the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick anbvbpft 6z7 i8+st8 3qqd a -4.0 mC charge is placed 7z 8ft3bibsqv6p8 tq+ at the 50 cm mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.ukqg.r)((y/z/w j*feihg qy 0 0 mC charge is placed at the 50 cm mark. At what point u gzk.iwgh(q//y )r q e(0fj*yon a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC arhaby) p;0)w,bo xnjx /e placed at x = 0 and x = 0.20 m. What is the magnitude of the 0) o ) /wx,yxj;hbabnpelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corcnk53mwbw::n+ bww, )xm exm- ners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the squarewxm5bebm-x),n w::nc w w3k m+.

  Consider a square which is 1.0 m on a side9 t d)d x(dhg*7qq)tym. Charges are placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.yq )m)qd xh9td(g*td70 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 t63l*g h+c8pgrzk; sbit is placed in a uniform electric field. * p;zksg t+rcl6 bg3h8What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC has n2 ubvvft su un-i)-(k4d uj,mx-w3xtqh1 1u4a 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 p+3xup8h9lb he laced in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be su+8 pu bhelx3h9spended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The balloq.*zd e 5r .xddl +7i7cif8zf is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric fieloxi* dzrezf.7ic l +58d df.7qd?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC. What is t3zool; 6yst3.v tv,eri o9oh-he magnitude of the electric field 5.0 cm from the sphere's surface?e v,h-.3l;6zv soi9rtot yoo3

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. Whae(wz+m lc1mz :k hhhgj(. jf29t is the electric jzz2 mc.whfeg9+ 1hjmk hl((:field 6.0 cm from the center of the sphere?