State the law of conser9a)f.n keybkw+z ,.dqvation of electric charge.

  Is it possible for two negative charges to attuw2xr b.3j .blract each other?

  Is it possible for a positive aba 8j 3ogfjz/g;nx e )8e3c0gand a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the pr,/r:k- fniz qhqx,2 kkocess the glass rod acquires a posq/hk xkizn:k, q-2, rfitive charge and the silk

  A proton carries a

  The model of the atom s lvb5i)jg: dve*y-iu,x.pe bdv:vqq ;e- h/)shows a

  A neutral atom always han11buih6v 1-/ -+mig4yjs qqv i4teils

  An atom has more electrons than protons. The0*pyar3( zd8jcj dy*x atom is

  Materials in which the electrons are bound very tightly to thb .hyi-74.up drzea6q 8agd 2 (3zxidpe nuclei are referrediddgzzpdb . i7- yrxe6(3a8 q4ap h2u. to as

  Materials in which thel0. zyo8;bwu g electrons are bound very loosely to the nuclei and can move abowlo.b;08uy zgut freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. tes)a( )sug5- sdafum p92f *k The end of the metal bar farthest from the charged rgs) )9efudt*u 25mp - ka(asfsod will be charged

  Sphere A carries a net positive charge, and spher-bkd /kl5z5 xde B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. /bxk-kd ld 5z5Which statement is correct?

  How can a negatively charged j5o,,eco s4ot1eci o 9rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positaf79l 9d6 zh *z6;oh.nkcgioo ively charged glass rod. The elecf6lo9doz6a .zgo nch9ih 7*;k troscope

  An originally neutral electroscope is grounded briefly while a positively charg d( 2nkerj+0rged glass rod is held near it. After the glad 2er(krg0j n+ss rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separa)u+vdh9iq 4,3qhx a icte. Then a negative object is brought near the electroscope, but doeq 3u x,c+d iq9a)v4hhis not touch it. What happens to the leaves?

  A large negatively ct(fky namr a5-3lf*hm2)xja )harged object is placed on an insulated table. A neutral metallic ball rolls straight toward thf-5*h2j am)axy k( trfa3nl) me 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 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 ts ;zyjq ipjg5x t:e:a7- )mx0phe Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatdwd.xh1;ocl- ed by a distance d. The first charge is larger in magndc1 l. ;o-dwxhitude than the second charge.

  Sphere A carries a net charge and sphere B is mof8 (+rnci5kneutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force between the mn(ik5 ro+cf8m?

  Two charged objects attract each other with a certain force. If the chaj3/;co e8 ezzjhdb, f,ok+oqd7 5i cf*rges on both objects are doubledje/o *;,z hdboqj7kiof,5c ce3dzf8+ with no change in separation, the force between them

  Two charges are separated by a distanceg tr.g fs5)c*r d and exert mutual attractive forces of F on each other. If the charges arecrg5trg * f.s) separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other w x(+,hkk 2+czkmi;pq jith 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-fourth its original value? The forc+ (mkkh,2; pzj+q xikce is now equal to

  An electron and a protonjm tp: azyq:-;f7:ey x are separated by a distance of 1.0 m. What happens to the magnitude of the force on the proton ifj tya; x:q:py7 zfme:- a second electron is placed next to the first electron?

  An electron and a pron25le,a)zka qton are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexeq) ,lnz a2ak5t to the proton?

  An electron and a proton4w. e5kqd ji*6c.( e uqj,owzs are separated by a distance of 1.0 m. What happens to the size o.o jsu(ej6q wceq*5kzd4,w i.f the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at 6tk t09n8 y5w4jpeh xuthe 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 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 actingwe 5 xphj69nku40tyt 8 on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of v5xm1cto5 xgu0eg64uk ( (05ytj orjl 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 cente rvjx45k(1ejyl5xgg5oou u(mtc 0t 6 0r charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following is no-/0ch(am qncz t a vector?

  At twice the distance from a point charge, the strength of the electric fieldfvx m/t7z(kz ,a v7bs+

  Is it possible to have a zero electric field value between n3 7sz3qdwm p n 5m/gz 5+jjqmrzom;9,a negative and positive charge along the l9jmn3,m7wjs;zp+5/5 q3do rgmnm zqzine joining the two charges?

  Is it possible to have a zero electric field 2 xchi jvl4rrvb;;3/h5h7rv lvalue between two positive charges along the line joinrv5h4 x2vhrl r3vhj;bi7/ ;lcing the two charges?

  Electric field lines near psitive point chaljfl.d )zr*u1 9*b/jyqq tk* orges

  The electric field shy h fn*4mollr-t7 - 7a(az(syyown

  Can electric field lines intersecjrq 61y8sc h2tt in free space?

  A solid block of metal in electrostatic equilibriuy).p d4dt effpz.h /p3m is placed in a uniform electric field. Give a statement concerning the electriff.hp/dzpyp.3 )d e4 tc field in the block's interior.

  If a solid metal sphere and a hollow metal sphe /x + .w:60 vgivtwxw-zq4nnlmre of equal diameters are each given the same charge, the electric field (E) midway between0qwlnwv/+ ig -xtzwnmx64.v: the center and the surface is

  A cubic block of aluminum rests on a wooden table in a re8, 5k 0a*yfinptplle,gion where a uniform electric fik508*,pp, lyfla en iteld is directed straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibn 3ivr.6ve8u/ a::tpn fby+bqrium near an electric charge

  A positive point charge is enclosed in flab;0t 21 st0:kxng oa hollow metallic sphere that is grounded. As comparel;ot2xg0 1 bftas0kn:d to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equxi 50 n7zc,vyzilibrium.

State Gauss's law.

  The charge carried by x 8m g6lqz7)p m42rvwkzd97muone 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 many more protyr.c0, (+ svkb49b0c ghmgianons than electrons dog094m,. yvccgrs ni0ah( k+bb es this piece of plastic have?

  What is the charge on 1 kg9 a ;exg pt:yf;2v/iln/by; sd of protons?

  An atomic nucleus has a cg -4pk(p8 j /lt ve:pkmq-i+cdharge 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,ieke3x 8j7f(gy )nl; x respectively. What is the magnitk)e3fli8y (g xenx7;jude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between )zkie:lh5do o4aw ;g 5them is 1.0 N. What is the magnitude of the si lo)waog khd;:e5z45 econd charge?

  Two 1.0-C charges have a force between them of 1.0 Nxf8 t (mm+/sin. How far apart are they?

  The force between a s;z 2jz318j n +cvttxh8vieh4 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 09 yt6ihhf;ft 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between0thh y6if;9ft them?

  Three identical point charges of 2.0 mC are placexyz:(kvr) - z;uh8h nad on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and the thirnza ) r8:k -hvuzxh;y(d 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. A charge of +2.0 mC is placed at m+mpv*0,7ujghsxq 8y the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 100 cm mark.mum7 sh*xg,8j0ypv q+ What are the magnitude and direction of the electrostatic force which acts on the charge at the origin?

  Three point charges are located at thoza8 abwy9cxotf3*) zp t9,i1e following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = - *cf bwap9xt,i z3o1aozt89)y5.00 mC 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 of a squ v ,ji)/1*7eo5 c:xwn*a,admk(kueu ,nc lsocare, 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 magnitude of the force that acts on the center charge if a third charge of -Q is p,a7ae w*j u,msvco ,d ) o(e*5k kncil:nu/c1xlaced 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 =jo+sg* vku/u (15rrz 0;-usqx0 ta anv 5.0 nC is at (0, 0). What is the magnitude of the nuo+/1 ga 0 u;rjss*xtukz5 aqn(-vr0v et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0,f8xftjt.pr+n 1yqp0 d+qw jkj* 8-jd 4 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the d +p8pr8xnd+. qf-jkj *jw 1 qftjt4y05.0 nC charge?

  Three identical charges of 3.0 mC are .clfe x -h78,qocvs)hs9 ;opeplaced at the vertices of an equilateral triangle which measures 30 cm on a cqcl h9vo,ph; o.ef -es s)78xside. 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 separated by 3.0 m. At oxfwf).66ppo x5pq jf+-fjc9what point, on a line between the two charges, would it be possible to place a charge of -Q such that the electrostatiffp . qo xf6jfp 9w-5xo6pj)c+c force acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge iyyr - c) btvrodc/d :,4sw2d.v -bm4kqs at x = 4.0 m. Where on the x-axis can a third charge be placed so the 2-ms ,wd4bcvt b:r-ry4 kd.o)qcd/ yvnet force on it is zero?

  Charge +2q is placed at the origin a5p. 7g,1mygutd grd0b*z w, aind charge -q is placed at x = 2a. Where can a third positive charge +q be placed so tha a 7 t.mi0uprg,,5dg dyzwg1*bt the force on it is zero?

  A copper penny has a mass of 3.0 g. A totasv:.3 4x0j :q1gvf iynn7 gkerl 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 upioee * . d .eccf-8tf jaxg83kluz4y81 against the force of gravity by the attraction of a fixed proton some distance j8cf3xael*eci-kgft ze. 1u do.48 8yabove it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a 47xngc:.hh e1q nb+bj common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elect:e1bxj47hhnbc n .+ qgrostatic 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. Whadaaa*vl* *a:tt is the magnitude of the electric fiedlv a*:a*ta *ald at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field;.ftxj/h;ip dusg ue f-*m3p) at a distance of 1.50 m from a 5 d)ixs;3pj/ep t* fgu;u.h- fm0.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the h/u+gmoj x+w- electric field at theh +o-ug+jwxm/ location of the test charge?

  A 5.0-C charge is 10 m from a small te4nr1r2 xdae8 sst charge. What is the direction of the electric f14ran 82exrd sield?

  A 5.0-C charge is 10 m wdhzy -y 6;k/vdi,g)c1 yvuk.5ch gb ; k7een4from a small test charge. What is the magnitude of the force experienced by a 1.0 nC charge plac k1i,z4knyv ybehky;g5ud ;-wd7).c6hv gc / eed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a distank:+v4ms,wtcwf nxf m-z/t* d 46p0xln ce of 4.0 m. What is the electric field at a point midway-6 vx*4tf+fm/ kl:pn cwx40tm, nwszd between the two charges?

  A 5.0-mC charge is placed2 5mhcz h1 ub;f4awdo) at the 0 cm mark of a meter stick and a -4.0 mC charge is pldhwzcah1; 4u)m 5o f2baced 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 d76twj:q;nh dm kf+0xmark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on 6hn:7+x t qd;fjw 0kmda 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. qigqk) u/y7n+sy o:,g What is the magnitude of the electric field at the po/s:goqgk y)yni u+,q 7int midway between them?

  Three 3.0 mC charges are at the three corners of a cbna9yf 9l7r)cc7;czab u x03square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field xyb93 ccb)fzcn ur;7 a 79lac0at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed h 56xygh 6kslqcd9 g6*at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (6g9ykq6hdh*6gl 5 s cx1, 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 placed in a uniform e :o 12zyvkv5u1ltshf:lectric field. What is the magnitude of this electri21 :ul 5 zsf1vykthvo:c field?

  A particle with a charge of 4.0+;w -yu8ecb kk 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 w1.k0iik:y3zmb a0m) xdun7dmass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball fom0z1b xunky :3da) .k wd0iim7r it to be suspended?

  A foam ball of mass 0.150 gh szio/a +u1cwi2n k 6lt1s8z4 carries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the el8 u s1/1zslt4ch2ka +no6izi wectric field?

  A metal sphere of radius 10 cmk1ll p:dcc)8nz ;tte) carries a charge of +2.0 mC. What is the magnitude of thet1 )c) lzn8pltce: dk; electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. /j;uky*gk2crl7q 4z 4gevhx5 What is the electric field 6.0 cm fr quxz47kc2v/lg gy4 * jh5e;rkom the center of the sphere?