State the law of conservation oq etvc*h (vey5d 1xl*)f electric charge.

  Is it possible for two negative charges to p:eb kqt9 v(q r7d)ao,eit9 )wattract each other?

  Is it possible for a positive and a negative charge to axi2 h3- ed lm.3lhv)oittract each other?

  A glass rod is rubbed with a piece of silk. During the process the ph )khoi gn0k.4(;s yqglass rod acquires a positive chargkg sk4ny hi(phq)o;. 0e and the silk

  A proton carries a

  The model of the atom shows aw)ee8 slcq(h+;+ ko(tx,ksjcrt ts ( 8

  A neutral atom always x 7u; (7xcsliehas

  An atom has more elec gi(i l8o5 twe)8cyhb*trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the w1h17 ovczb+7f1dfh b nuclei are referrhvf7dbc1z7fw1 b+oh 1ed to as

  Materials in which the electrons are bound very loosely tlgu*0 :a4ann so the nuclei and can move ab:s nlau ag04*nout freely within the material are referred to as

  A negatively charged rohl4 tg l-1uwszj 23 6:fr.sevid is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the chj.ez iv 2s-fg4 sr1:l3htu6wl arged rod will be charged

  Sphere A carries a nesypnjgf7r6 o )h7/c20e a (mjct positive charge, and sphere B is neutral. They are placed neahn(a2f7/m rg cp 6s70cyj )oejr each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an : pb ;kkaz-+p mxi3hv *vzqv,6xqhk26 electroscope positively?

  An originally neutral electroscope is briefly touched with a positip4ncvd9xll: k3dq*gpo +c;i62kz 5 zo vely charged glass r64o2k+3 9qngk5v zc*cx;ipo: d dzllpod. The electroscope

  An originally neutral electroscope is grounded briefq4 dl44k3mgi 5 1-qnpnq:oaexrb:( kw ly while a positively charged glass rod is held near it. Afkqk -xg41bpn:m e :ainl o4(d4r3q5w qter the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, ande5c6u; 5hb7ri ja6k bw the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaucb r55 ;jabk7 whe6i6ves?

  A large negatively charged obu(kma-+e7;ebdin/sc nd- k2 uject 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, and stops. The first ball rolls forward, but does not touch the nnkk e -; es-m7u2bd+aduci /n(egative 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 Coulwc (ntl)ptfzp/73(w i va+h+vomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is g.kcws v :4k5jlarger in magnitude than the second c j:s.k5wkcgv4harge.

  Sphere A carries a net charge and sphere B is neutral. They nyf3ie l1as zcv3+mguc:86-7 hp g-vi are placed near each other on an insulated table. Which statement best describes the electrostat i-7 6iczl+ :s 1haeum g3vfvny3-8gcpic force between them?

  Two charged objects attract each other with a certain force. If the char ns3g 08nfj5tzz9gw7 yt-j 7tuges on both objects are doubled with no change in separation, the force between them- ut7jtn9z3g85fj 0 y gszn7tw

  Two charges are separated by a dis*.+6w l lw;x(lkvvkpob0l pe* tance d and exert mutual attractive forces of x wk0epok 6wbv lvll* +p.(;*lF on each other. If the 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. What happens to the f19pz e1 a0su7pcn7uzq/r ux j5orce between them if one charge is doubled, the other charge is tripled, and the separa1sup7a7j01 zrnqec/pu5u 9xztion 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. What happens to0atfevj l3-gb2a*n93 ot7s ja the magnitude of the force on the proton if a second electron is placed next to v73n bt 903 gjoe2a-ltfaja*sthe first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happpn1g6l 4 y8(emlaq n,hens to the magnitude of the force on the first electron if a second electron is pl8q1ag p(,lhmen ln46yaced next to the proton?

  An electron and a proton aro22 6 vbov:txne 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 cnxo:v2o vt 6b2loser to the proton?

  A point charge of +Q is placed at the center of a square. When a second point xl+.us,.a5j1;no c bhj edw;c 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 ar,;.owuc.5 sbxa +1nj;d ljhece 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 eqotne.x-22 vhwkje wy604 hj+y uilateral 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 onw -.y nwevjht0kj +2oyh24e6 x the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following kgn;x(ii+ fj( j nb;;lis not a vector?

  At twice the distance from a po 6 a0rfqoh73 pbq56(dejkr li,qbdu.,int charge, the strength of the electric field

  Is it possible to have a zero electric fiey,za5mu;f.j v :;0afirl040 hitgx edld value between a negative and positive charg 0yvji;u:5 ifafzlh4td .0amxe,g; r0 e along the line joining the two charges?

  Is it possible to have a zero5v;h 7y (n,le1fyh m ogej:uc+ electric field value between two positive charges along the line joining the two cm, lhucj5(ehf vnyeo:1 7yg+ ;harges?

  Electric field lines near psitive point chargc8 jsmrn-7/j uyhoy6 ;uz, k/aes

  The electric field shoj od;qo/ 5 yt2bkl5w6ewn

  Can electric field lines intersect in free ma4at-) -;wxf,a jgljcy2 ,ghspace?

  A solid block of metal in electrostatic equilibrium is placed in a unifzb7g8 7/xxw khe g-g,lorm electric fieh-/8g7 7exz, l bxgkgwld. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sppee i.:u-s8g r/xcmv)9ja4ar here of equal diameters are each give8:agrc -p j9xe v a./usmri4e)n the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a unif,bp kt ampx9ilt:2 09mt0wx( dorm electric field is directed straight upward. What can be said concerning the cha( :kb9mw2tl0x9i0xt, atdp mp rge on the block's top surface?

  If a conductor is in electro6d n53jxe jxfz*0 hvxmj o75t;static equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is grou.hz; rajoj:szu.rx+ ;w z(l m6,xmi(bnded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere .xjjx; o (6w( ;u:zrbi+ar.hmmlz, s zhas

State three properties of conductors in )a-4c 9 tnoljmstatic equilibrium.

State Gauss's law.

  The charge carried by one eledog jgu/ lrxwz9q- 6;)ctron 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 o: lf/8,qiodp+2.00 mC. How many more protons than electrfip, o/lq:do 8ons does this piece of plastic have?

  What is the charge on 1 kg o;rs4:trs ox6 mf protons?

  An atomic nucleus has4kx5w m c;/kq m5eln9s a charge 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 chargfh7/b9z soq) ve values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric forcqhz v97bso /f)e between them?

  A 1.0-C charge is 15 m from a second charge, and th:rcvviaf3j2 0e force between them is 1.0 N. :rva0 ij3vfc 2What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far aparwaz2h;xifj.,pp 93 ub t are they?

  The force between a wwxywtf m,)ef4qw q;01nxs :u pq7cac+66 ye6 $30 \; mC$ 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 1.0-N tyaj li7 t:e545u.oqrforce. If they are moved to a new separation of 8.0 cm, what is the electric force between the 7.jui 5 yttrla:q4o5em?

  Three identical point charges of 2.0 mC are place q5rw vol +na9;-d0/vaq x7ba sh28 oekx3gu6od on the x-axis. The first charge is at the origin, the second to the right at x = 50 c0n 6b+3qox72vas5/qla9xhuvgw keo 8 o -ar ;dm, 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. A charge of +2.0 lq:.c ssi,tu/ n. asuqm5t4u/mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 mC at the 1tt/q.:,s 5unsqcu4u asi/. lm00 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 f,2ra zbp 4vwj/4 pct)= 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 m/)4 ar ftjw4vbp,p cz2C 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.8v ukf wnabw.)w/ bz6 center 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 magnitude of the force that acts on the center charge if a third charge of -Q fzw/v.a68 )bwun.kbw 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:cfx0bkr*n k( = 5.0 nC is at (*rkx0:f(bk nc 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, 0); Q2 = -1.0 nC is at (0, 0.10 m); (0wv9/pozsx xQ3 = 5.0 nC is at (0, 0). What is the direction of the net foov 0s pxw9(zx/rce on the 5.0 nC charge?

  Three identical charges o7nobz(g0+k (oeq+ dev f 3.0 mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitud e k+eg(zvnqo0ob+ 7d(e of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separat*w- mm+u v,jrced 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 fj,m wcu -v+m*rorce acting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0uw)i5 wi2qv(b9 *onh l-C charge is at x = 4.0 m. Where on the x-axis can a third charge biq(i 592hu*o)n wbv wle placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = rsv iv-cu 2/)w+ac*hd2a. Where can a third positive charu*h c-/ vcw)2avdr+is ge +q be placed so that the force on it is zero?

  A copper penny has aio.m aw7 nnlhehm 09+- mass of 3.0 g. 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 the0a,p w+s*ty1ul l: ejf force of gravity by the attraction of a fixed proton some distance above + *uye 1salw :t,flp0jit. How far above the electron is the proton?

  Two 0.20-g metal spheres 9(2ddetd uuvel/q1)6 y;4n gggi wyp ;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 apart unt g;;eq v9ige/yt1dw(4g2 u u)dpy dn6lil the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +4*,oabq1mf:rt4vhx3 5ggg:8licbpkhi 96o * y0e. What is the magnitude of the electric fg1k4ig35gp*iyh6t b8x q,oclb aor h v:m9:*field at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a zxijx -k82kz4g *o/1n;jh/yrcyc qc 8distance of 1.50 m fromcc2gj x1h/o*c4 8q/zjx ;ni 8-kyzkry a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test chargeqz )bzk hp*:z2 m65bst. What is the magnitude of the electric field at the 5zsh6m:z *2 bbtkqp)zlocation of the test charge?

  A 5.0-C charge is 10 d19: cnz4sl7uqe(kbem from a small test charge. What is the direction of the ez7(kuqcsn 4d1:bl 9 eelectric field?

  A 5.0-C charge is 10 m from a small test charge. What is tr aog uegy9)6klw6:e2he magnitude of the force experienced by a 1.0 nC charge placed at the location of the te2ly g ek:u6or)gaw9 6est charge?

  Two point charges each have a value of 3.0 C and are separated by a distangem*f eoh oj1jno3* /)ce of 4.0 m. What is the electric field at a point midway betwe f ne*j3oo*hm)/j1g oeen the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meth cy0d /cmsf)y3ma+v/; k7bncer stick and a -4.0 mC charge is placed at the 50 cm mark. What imd/y)khvf03m7y /scc;c a+n bs 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 -4.0 a )yp gr f6*8vabypi+js;l+r (mC charge is placed at the 50 cm mark. Av+syf;pr i)6r l(ga yp+*a8bj t 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 7 bwvcjs6bql2y3m; rpf4-w0 mat x = 0 and x = 0.20 m. What is the magnim4q03 lmb;pjrysw2 wf6vc7 -btude 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. Tq o v 9)4b df-:; ynudd(fdp+2onuzwj9he last corner is occupied by a -3.0 mC charge. Find the electric field at the cente9f( yo):2zn u+od4pujqf;9 vnb -ddd wr of the square.

  Consider a square which is 1.0 : w+(g idx 6lfvtj0,nem on a side. Charges 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)xl6d+jg(nfv:e0t,w i. 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 jdlukvp95x - o-e1mc3it is placed in a uniform electric field. What is the magnitude of this electric field?ue-9x5 k3cdv -jlpo1 m

  A particle with a charge ou cmj52pb uk6o5apvml6b)bwx9 ,d.1 k f 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 6005/q59;p+dqjra;/vvlrz tqe l0 N/C pointvt5zd5qr v/e /lq r;la;pq9j+ ing downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g cizb akp1g** (hzx8b0uarries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the forceu01za *phibx*z( g8kb of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge ov8,v4) +s bfwcgs-dun f +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's surfascv w,ud 4)+gb8fsv-nce?

  A metal sphere of radius 2.0 cm carries a char68ki 4yazpzy0 xui. z6 2;pszbge of 3.0 mC. What is the electric field 6.0 cm from the center o0ky. az z4zz6s26ii;bu px8p yf the sphere?