State the law of conservation of/ ggdb2uyz*i b4u5etjzs. lf21p u(+e electric charge.

  Is it possible for two negative charges to attract each otkg)x+*qg+ mc /*pql(xu st wk)her?

  Is it possible for a positive and a negative charge to atts w 3gpejs 7eeauvw*z;z4vj.+/8l: lwract each other?

  A glass rod is rubbed with a piece of silk. 5+ axlu*rpi6znrq f tn(3;tn7During the process the glass rod acquires a positive charge and qr5a 6*t+ pnrnn;iuf7l 3x (ztthe silk

  A proton carries a

  The model of the atom shows /deq86 +p6xetfqjy *w a

  A neutral atom always hj d p0i,h;pbiyeq- x/7as

  An atom has more electrons than protonssci4w ,z thb(n- ,td) swbo5 y8jig+2q. The atom is

  Materials in which the o)uw.3 ose,orelectrons are bound very tightly to the nuclei are referrer )u3o e.ws,ood to as

  Materials in which the electrons wg3 bk .ltpkb (:88ttrare bound very loosely to the nuclei and can move about freely withlbrwt8.8tg( ktpk :b3in the material are referred to as

  A negatively charged rod is brought near one end of an unch;zrhce 0o8 j,yarged metal bar. The end of the metal bar farthest from the charge8 0;,zhj roceyd rod will be charged

  Sphere A carries a net positive ,iwl5jz,+0 r q4dim-tj:xvxtia;te , charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which:j,,ijxia-qmtedv;4 lw5 ri 0z,t+xt statement is correct?

  How can a negatively charged rod cha83q60mtkq gwyrge an electroscope positively?

  An originally neutral electroscope is brtt4bcd,hc d(q67jr.hh bo9piwy94 6wiefly touched with a positively charged glass rod. The electroswjyo6 4 ,r4cw9.dqcb h(97i ptb6 htdhcope

  An originally neutral electroscope is grounded briefly while a positively cw .mpvhvzd / 83u+;ltoharged glass rod is held near i8utl .p3o wvdhz+m/;vt. After the glass rod is removed, the electroscope

  A positive object touches a neutral elj eos ,c4i/qary74k -tectroscope, and the leaves separate. Then a negative object yjo4tic,q /7se-rka 4 is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an inr.*uopnl0d d k4mox68 sulated table. A neutral metallicuro0kxdpomln. 8 6 d4* 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 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 constant;* rba 4sdkzv50fd3 zn $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The firstey4 vjus1g37l charge is larger in magnitude than the second cgl1j3es y 7uv4harge.

  Sphere A carries a net charge and sphere B is neutral. They are place,xuc d/ i42 +irkb47cnscl4ykd near each other on an in,r/+d 2ci44cy k7sbik lxcn4 usulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the charg nu /et6y8 l,0aqhhu2ues on both objects are doubled0/u2 6ytanq,u8u hleh with no change in separation, the force between them

  Two charges are separated by a distance d and e +c 4) hngc1fqiqzi)(nxert mutual attractive forces of F on each other. If the cq ci f()4z1ihng)q+ ncharges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract irut8x03 afs*dpj4 h)each other with 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 force is 4r8 0au i 3jhsdf*t)xpnow equal to

  An electron and a proton are separated by a distance of 1.0 m. What happens ikd 9k0ck 7ly:to the magnitude of the force on the proton if a second eleck7li:dy9k0 cktron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m.ctll2j*5 7 xbw What happens to the magnitude wtlxc7*l5j2 bof the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated byetad*i5 6 iaw/ 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 i aat5/edw6i*proton?

  A point charge of +Q is placed 7a xa.lq-wf rlb 7ps7: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 the positive charge a.a bf qalp7r-7w7sl:x t 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. W2oht6/tlx m/c 4.xvs 7/ f5v;rfyc df,mss9rihen a second charge of +Q is placed at one of the triangle's vertices, an electrostaticx d92csfr5 mlviv,6 shf 47sc// mo/yxt;tfr. 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 ve;ws )) jwj0faictor?

  At twice the distance from a point charge, the strength of the electr)o*nl f hhsd/7ic field

  Is it possible to have a zero electric field value between a negative 8nvxhhub(1ez p4b*.f6 b u7gpdf16vsand positive charge along the linb 1nuv8hg 6ppd6bxh*1f.4v7 s(zue bfe joining the two charges?

  Is it possible to have a zero electric field value between two positi8d a/qsqxh w0+ve charges along the line joi8hw+0d/aqsq xning the two charges?

  Electric field lines nearb hbid7r2u8 q8 d cbf2.ifh64hd 3yel+ psitive point charges

  The electric field s 3sl fzc*fq:hf/p,d kcw 08(eehown

  Can electric field lines intersect in free space gaf7ict o6+-s?

  A solid block of metal in electrostati9pnh e im o-+n)3p9ihz9 bs-qw2og k+gc equilibrium is placed in a uniform electric field. Give a statement concerning the electric field ine io+pkz92q3 -g9n-gsbo+ i 9m)h pwhn the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamet( 3nr 695zbemo(ey xge kr+(gm:(klnaers are each given the same charge, the electric field (E) midway between the centerm (goy re (kl3aeenr(5 (g nbkm9x+z6: and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniforml 1 xeq(1 h-xiao4ek)bx.e..gcx: wb9ac: ovn electric field is directed straight upward. What e( .a14:x)xhewc-iq c bb:o19xklva n.goe.x can be said concerning the charge on the block's top surface?

  If a conductor is in 4(/k u5lbu brct3t l,celectrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thl fn il*stehz v: ro /w+;(z8;fwnz:y0at is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hoshlwiz:+en ozz 8v(rwft; n;yf /*:0lllow sphere has

State three properties of conductors in static cyvh,/ngqe(vz zg.l jy4w 9(6 (vpza,equilibrium.

State Gauss's law.

  The charge carried by one electron i mi:5(/dugq nps $e = -1.6 \times 10^{-19} \; C$. 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.e7eixpue5- /h8 o*pzg How many more protons than electrons doexgho 7z u8i5-ee /p*eps this piece of plastic have?

  What is the charge on 1 kg of protonh1/3yipfjnjk h+ h28cs?

  An atomic nucleus has a charge ofcnko hu:y5a pk8tpe -dgi r2t+2 8/a8y $+40e$. 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 valueu)pb66b; mi cvs of 2.0 and -4.0 mC, respe)cb;pvi u66b mctively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force betwj l t,9)o:xg 9xrfpog(/ slm2neen them is 1.0 N. What is the magnitude offp)9x(mn 9,g/g2ls r oxlojt: the second charge?

  Two 1.0-C charges havexbe2h-)7 rq oqwb6 hlki t:1d( a force between them of 1.0 N. How far apart are they?

  The force between a qdy fn(ek3;l -$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience au nph. v/ q-qnk9vkn8. 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwn9qvv 8nhn -k./ kupq.een them?

  Three identical point 9vam8 lg5 .hhwcharges of 2.0 mC are placed on the x-axis. The first charge is at the origin, the second to the righ5hghvaw8 . lm9t 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. A charge of +2.0 mC 5su4: dme:x,nkr x,q pr27xyzis placed at the o k2 yzem s7:r,udq5r:,pxx4x nrigin, -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 on the charge at the origin?

  Three point charges esn 8j66 lu.cbare located at the following positions: 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 the force on the 3.00-mC charge?cjle6nus6b 8.

  A point charge of +Q is placed at the center of a square, and a secb7p4 bj81ar 04drxtdi8mntg+ ond point charge of -Q is placed7jxgndi4p48r dtbmat 18+rb 0 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 placed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC isc x9hth -8u z*6bwlug7,zq+r p 1or8zy0ktk8 p at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude +uh qp7kr zc 60l9y8rh*uk8b1,tzowp8g-zt x 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 is ati +i,z.g8w uyw b+lt0zv)mt39tej xp ; (0, 0). What is the deb.98 i +wmzptv+u,0 yijxgw zl3;)ttirection of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver8f /qur ald 2f(17msojtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any 8d fr(om712q/asf uljone of the charges?

  Consider point charges of +Q and +;lopy6c ;/si m4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would ;oyc; mips 6l/it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin aw w3z:r/sw,io nd a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net f3/,wz wsw:roi orce on it is zero?

  Charge +2q is placed at the origin and charge -q i 2d c0h/un,qpds placed at x = 2a. Where can a third positiv/du dh,qc0n p2e charge +q be placed so that the force on it is zero?

  A copper penny has a massz5 j* rctnz,z* 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 kyn4/ 8m : x3zxy2sqxcagainst the force of gravity by the attraction of a fixed proton some distance above it. How far above the eley 2sn xxz8:4m qcy/k3xctron is the proton?

  Two 0.20-g metal spheres are hung from a cz3mmrzb) i sjrh3y-zw )y +xx.((,tfpommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic j m)(xp3rzby yhw)(xf+3 rs -m. tz,izrepulsion 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 +40 v:/ l;eorvtg,* b8f4oq8fayoe. What is the magnitude of the electric field at a distance of 1.0fo :oe ,8ytfbvvarogq8 l/;*4 m from the nucleus?

  What are the magnitude and direction of the electric field at a distanix696 ap78 qwdibe9hnce of 1.50 m from a 5pxqd7 b6ih 6 e99wna8i0.0-nC charge?

  A 5.0-C charge is 10 m from a smal .;o7fjt t*y +tnynvlv7(9 smzl test charge. What is the magnitude of the electric field at the location( v*l+z o7nv njm9syttf t.;y7 of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What h583 eqs;qnqa is the direction of the eleq8 eq3s;qna5 hctric field?

  A 5.0-C charge is 10 m from a small test charge.952y0aqq/-b v *wed-otdtygt What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cha-yqd 25 tdw-b9tqa*t ego/y0v rge?

  Two point charges each have a value of 3.0 C and are separated by a distmns eh7s;.v5mance of 4.0 m. What is 5esvn m;.ms h7the 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 stick and /zd( kcjd5y uu5v5r4p6d9mvfa -4.0 mC charge is placed at the 50 cm mark.9v5 5ud4d6 vmz5c dyjkf(p/ur What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mp/dm wj25m +ejyzzz06pn*7n cark of a meter stick and a -4.0 mC charge is mc /jdzp 2 p0w*jzyn+n 6z7e5mplaced 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 m)c g1vyxxn/9 nC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them? yc/1)ng xn9xv

  Three 3.0 mC charges are at the three corners of a square of side 0.50 rbua2 w9zn pe-tj9w3.m. The last corner is occupied by a -3.0 mC charge. Finr 29nze wujbw.3 -at9pd the electric field at the center of the square.

  Consider a square which is 1.0 m on a su e;.j0ftsuft 54kz1 cide. 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). What is the magnitude of the electric 0t.4zsf5t1ej u uck;ffield at the square's center?

  A force of 10 N acts on a c 1fi z9wbuq+l6harge of 5.0 mC when it is placed in a uniform electric field. What is the magnitudi1z ubwlq 96+fe of this electric field?

  A particle with a charge of 4.0 mCg12:kkpct bhhl.h ;7)6kps;jw3sav+ etf g y+ 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 pbnc41 pggza mb9g2 -+mass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the b4-1zmgbcg gppa+nb29 all for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. Thebb6 8c8 1mocdy(b43lb a*9 fwo v:haiq ball is placed inside a uniform electric field, and is suspended against the force of gravity. What arebych (4bbd 8c1:i 9 *3lofaab omw8vq6 the magnitude and direction of the electric field?

  A metal sphere of radius i l :i3 c.xijqfb n(*15-qg7wu)vjo fe10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm vqff)u * eiojx.-qg:lb c7(iw3n i51j from the sphere's surface?

  A metal sphere of radius 2.r d wbc i5lhl0s6u+)2bm :3pgd0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the center of the lm)3r0icsp:5dbh wd+ ulg26b sphere?