State the law of conservation of electriv6x) ow5a6nlx c charge.

  Is it possible for ta+r.9ex6c h zawo negative charges to attract each other?

  Is it possible for a positive and a negative charge to attract each other7,nbcjnn;q5 ,wy+mr-v16qo mp( bjyd ?

  A glass rod is rubbed wiorvp2uwoxd r0+b 19 dsg81g7dth a piece of silk. During the process the glass rod acquires a prpo gvr2ddds x9 ubwg 1o870+1ositive charge and the silk

  A proton carries a

  The model of the atom showsl/jb/z1pjo 9m a

  A neutral atom always hask5ae d8; d5cms

  An atom has more electrk c+4nnzy5m8hons than protons. The atom is

  Materials in which the electrons are bo5 y+6fg,e/ xrrpuopv iyd06i,p1 w0 uound very tightly to the nuclei are referred to ryr/iop,0f,uwug0 i vp 16xde6yp o 5+as

  Materials in which the electrons are bound very loosely to the nucycwz3q ,1 + g-elc9tpiy88lcb lei and can move about freely within the material are referre-+tc,q19ze pycgb w cl88l 3iyd to as

  A negatively charged rod is brought near one end ofd/o (1ews w6*pjs*h sn an uncharged metal bar. The end of the meta ss 16/weownhpd*(* jsl bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They a 5zk75mcecci( t8b+pure placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded5cuc8 bitz(mk ep7 5c+. Which statement is correct?

  How can a negatively charged rod charge an elect*b:wr g1fxa08e ogqu 7yzq23 oty p9s+roscope positively?

  An originally neutral;h)0kz3 7 8gmfd08oj hhwwhby electroscope is briefly touched with a positively charged glass rod. Twj o;3)8y0khzdmhw8 gf7 0hhbhe electroscope

  An originally neutral electroscope is4da *n mkq if3u11mwc9 grounded briefly while a positively charged glass rod is held near it. After t9 i3 14acu1*qwmnmdkf he glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate8 zj-u;.j 3waeljobx0j .p.kg. Then a negative object is brouw ;jj-a.jlz0p3 b.k.x8u ojgeght near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutra4otv v d6b6b(wl metallic ball rolls straight toward the object, but stops bo4vt 6d6( bvwbefore 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 t iy:jv4p.s1-zc);avfthc+fdq:u +y$k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerhvz6-jef g( l7 in magnitude than the second chargjzefh-(7 g6vl e.

  Sphere A carries a net charge and sphere B is neutral. Tm2zkdp-jk p p5q7o-h (+o;pca hey are placed near each op--d+k zkm5phjq2c7o;(p ap other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each otdcsunki + .cl0g 1 .-clw)(mezher with a certain force. If the charges on both objects are doubled with no change in separation,ei. dw 0ml1kgucc(-z. ) n+scl the force between them

  Two charges are separat abub gip8584oed by a distance d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what aob a5ip u48b8gre the new mutual forces?

  Two charged objects attract each other with a fodz8kx -aj2-ckrce F. What happens to the force between them if one charge is doubled, the other charge is tripled, and the separation distancd8-za2k-x jck e 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;7vdbp c,)sg )iay zia 33z(je a distance of 1.0 m. What happens to the magnitude z3dc i;y7,zej3va gb )a(s )piof the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separat4rd4zw9be:ou5) i u voed by a distance of 1.0 m. What happens to the maoebi5w:z r ouu9 )4d4vgnitude of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. d*icfg4sk6 cy a+bb.gx8k h,3What happens to the size of the force on the proton if the electron is moved 0.50 m closer to cs3gfkgyxk8bi.4dbh6 +, a*c the proton?

  A point charge of +Q is placed at the center of a square. When a se2e u ja/u+u:4 d l9ub8tlttmp9cond point charge of -Q is placed at one of the square's corners, it is observed that an electrostatitmup ub :ldju+82 9t4tal/e9uc 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 ekgcj,yq /t 4wc8 av0y ry-va3 5+ls9gat the centroid of 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. tg r5q cyegay,asw/+cl-yk80j9vv 4 3What 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 h(e. omal6wpj .m.-u dvector?

  At twice the distance from a point charge, the strength of the electara)s s045cf mric field

  Is it possible to have a zero electric field value betweechp(vk0fs 08 mce,azcq92l6mn a negative and positive charge along the lic0q9mk 0cmal6v ecs2(8 h,zpfne joining the two charges?

  Is it possible to have a zero electric fh 9w9zpv*0j fph(oh2hield value between two positive charges along the line joining the twopp 2zhj(vfh90ho9 *hw charges?

  Electric field lines near psitive point ch,hoistgt4(ymh2;m ,c)hcs 0warges

  The electric field shownt 3:ryhl0u/s s

  Can electric field lines intersect in free ai9x;e3(hf, mg f1.vcte;lqaspace?

  A solid block of metal in electrostatic equilibrium is pwfgc/f hls 698laced in a uniform electric field. Give a statew fl8h9/g s6fcment concerning the electric field in the block's interior.

  If a solid metal sphere and a h hlug.+nv e6j-otvy-3ollow metal sphere of equal diameters are each gi.-e3u 6+yg ljvhonvt- ven the same charge, the electric field (E) midway between the center and the surface is

  A cubic block of alumjj2v52piy qk 0 65wxpdinum rests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concer5 5j2pxv jk0wp2q idy6ning the charge on the block's top surface?

  If a conductor is in electrostatic equig 58qsu4iyvt/librium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere thatqfbh6r99f u8h9ay :bh is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the holl8a9bh y9b q6:f hfu9rhow sphere has

State three properties of conductors in static equilibr)iyne 5d9(t4. 9 nxeyufiug0gray 1q. emx6(oium.

State Gauss's law.

  The charge carried byl6n v k 5p r:y(-df+mibjnd(i;gm-p1l one 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 prlzqliv a79i +6a (g*svotons than electrol il9i67vv(*sqa+g zans does this piece of plastic have?

  What is the charge on x yuf qju(/*8j1 kg of protons?

  An atomic nucleus has w4ln,d 3 ms9e80hg3yjzq.f8zph n ky.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./ngrfh7h+h78bwabxoq k2l*l 4 ;xvt*5 cm, have charge values of 2.0 and -4.0 mC, respectively. Wha7xbk7awo n hr* b4h+xg;*8qf tllh/2v t is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1.0 1zqc8 wma-ska n g/9j.N. What is the magnitude of the second chagm-.wsnaaq 81c/jz 9krge?

  Two 1.0-C charges have a force between them of 1.0 N spp 41.jn: 8vuu1r xoi/6oxcq. How far apart are they?

  The force between a g-, mdh 5 hldo/9n,kbk$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cme uop5 -8x06jvbgqza9( zyqg5 apart, experience a 1.0-N force. If they are moved to a new separatig- ya(qvzo p05ub5qegj z98x 6on of 8.0 cm, what is the electric force between them?

  Three identical point c*s dhxc lsqz/u5z4pz )+ul.vfn; 4qx) harges of 2.0 mC are placed on the x-axis. 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 are the magnitude and direction of the electrostatic force which ac ncl;4fz sdpuzqhx/*) lz+.u 4x5 vq)sts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mC is placed 4bcjdv8p +t8kj: bl (zat the origin, -2.0 m C to the righ:c8t 8(+zkb 4dl jvbjpt 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 are located at the following positions: Q1 = 2.00 mC at );h)4q evgc rxx = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. Wha erhv4c)x;g)q t is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second point .s:8do3lfkpel zjd 2 i)kl7f) 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 oli f83fl)l7j k spde)2k o:dz.f -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 is xcy*b z0k+ng8at (0, 0). What is the magnitude of the net forc80ck g*+zyx nbe 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)9m5t:t,ez*b3gd 9sz-.)on zlto orij; Q3 = 5.0 nC is at (0, 0). What is the direction of the net fobn3j5etz*lioodoz 9zt - t)gs9, m:r. rce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are plaub/ d: bq2x8u ,h7krriced at the vertices of an equilateral triangle which measures 30 cm on a side. What is tb8hbr2 : uxqd7iku,/r he magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q ah.a,upisg:6wt)cu ikt :7t/rpcu,3ga; ; i du nd +4Q, which are separated by 3.0 m. At what point, on a line between the two charges, would it be possible to place a c )ig;uu:k7,/up ,h :rpa.twit3;tci 6cgasdu harge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the orig ,quil mp3u+*wuvn2u8 in and 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 force onwq l 8u2,n i3*p+muvuu it is zero?

  Charge +2q is placed at the origin and charge -q is 9 5qrsfi.4rqz placed at x = 2a. Where can a third positive 95f qrri q4.szcharge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A total o9l; 2u8hjdxstu y y;n9f $4.0 \times 10^{12} \; electrons$ 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 th,ox1p cu *toxu *;:hq :7 atgrwtx/1bce force of gravity by the attraction of a fixed proton some distance above it. How far above wt*xoo p*u,r/1qub:;71txchcaxgt:the electron is the proton?

  Two 0.20-g metal spheres are hung from a j-2gb2i b lm:lcommon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart until the angle be2igbmb lj:-l 2tween the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a chargecdph/dm4 w63eyc9d :7 bz jq)x of +40e. What is the magnitude of the electric field at/) hebwz9djdx 46: ydp 7qcc3m a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric flw le. ebjxi5gy+93m0ield at a distance of 1.50 m from a 50.0-nC i3. 0m+j5xllegewby9 charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of tl y*8-qhgiy p(iyq 06she electriyp ig lqh6sy(iq8-y0*c field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. Whak*x1cxk 0wud;yae*/ j3skx a6t is the direction of the electriac3 /ak0kxex kxudw*1*; s6yj c field?

  A 5.0-C charge is 10 m from a small test charge. What mb.e ikjr2v w11z1b) iis the magnitude of the force experienced by a )mi 1wve 1jiz.2bk 1br1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separate -ivb.7r tr;dr7gvf;v d by a distance of 4.0 m. What is the electric 7;rfd i7t -rgv ;vrv.bfield at a point midway between the two charges?

  A 5.0-mC charge is place 0hayioe2,k rq92 q9rud at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric kq0rr 9,uai ey9o2q2hfield 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 mC chargehz;-sw spw wcb-7po76 is placep-ow hcs7; -6w bp7zswd 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 0 k5 xy4y *gywrue t2;tvak(x3 6xgpy:-7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the e(6;k t :ye au*kxvrgg042y3y wx xp5ytlectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners 3m yz4 vxz0fku+fxk59of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find 9z0f5v4ykx+xzk uf 3 mthe electric field at the center of the square.

  Consider a square which is k:b* hgktmd 41jbdk5t r7cr );1.0 m 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 a7bdgk5c hk :;t*1trd jr)m4kbt (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 it is placed in a uniform elec.pe b55 skg9lntrk. pgs 95l5benic field. What is the magnitude of this electric field?

  A particle with a charge ofz8l t9 6sk/3bd cok8hf 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 mass1 igbn fwy:1lde92.b lk 5tjm4 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be suwmi:et9llgy. jk412ndbb5f1spended?

  A foam ball of mass 0.150 g carries a charggh)n3i a5 nvy72 f8bbne of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the 5vb2 8gbnn3yi7ha)nf force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0 mC7oqkkyn6 (6 cv. What is the magnitude of the electric6 yknkqvo67c( field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm co:9 v6o w( rx*qonvyh-arries a charge of 3.0 mC. What is the electric field 6.0 cm from thv:o o9o*rqw-x 6hy( nve center of the sphere?