State the law of conservation ofm87 myds9v09 niz0peg l ru1w7 electric charge.

  Is it possible for two negative charges5/htxzb(l7 gq4)x2 -l329xhn5aebep fjjo ov to attract each other?

  Is it possible for a positive and a negative charge to attract each otev+iyp m ..zxaxwp l+:.ki*.oher?

  A glass rod is rubbed with a piece of silk. During the process the glass pfojz*e(:0nve -/ eyj rod acquires a positive charge anejpo v/ye z jn-*0:(fed the silk

  A proton carries a

  The model of the atom+j25ommof5q ag .4(mevze* xd shows a

  A neutral atom always hasgc 9 e-j;+dnyu

  An atom has more electrons than pro styh9.m-v4pw tons. The atom is

  Materials in which the electrons are bound very tightly 7c96wqs3 yw su )vly41atpx;u to the nuclei are referred yw;xqy 6)4sca93v pu1w7tu sl to as

  Materials in which the electrons are bound very loosely to the nuclei and cac yknd1 6ifda.7c:5h m dvc8(an move about frdid7d8 ac :nyh fv.5k ca6c1(meely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. 7+h;kuk .jum/d.rg3gehgj g.i 5t mw2 The end okjg5guedgi wjth7.k.;r3g+ mmu/2h . f the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive chsg. qrn)y,d- e jqp-ru;qw6u4arge, 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 statement is6jq-n,up4;) qwry .sdeq rgu - correct?

  How can a negatively c a1 m78ih5g3v9n8xhoqrdn q8eharged rod charge an electroscope positively?

  An originally neutral elect3e;rm,y*+t 6g iws jjrroscope is briefly touched with a positively charged glass rod. The electroscope i,r*e+6yjs 3mtj;wgr

  An originally neutral electroscope is grogmd 0b,u.lik2p 3a4ixunded briefly while a positively charged glass rod is held near it. l bmg302pdk i4ix,.au After the glass rod is removed, the electroscope

  A positive object touches a neutral elect mf2 n;mxy1.mj/og3hwtqe6 u 2roscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to 3xn u2mw1m qh/e;tfoj2ym .g6the leaves?

  A large negatively charged object is placed on an insulated table. . )vy*5zzkn0lwove . du5kdrulp 337p A neutral metallic ball rolls straight toward the object, but stops before it touchepnvukwl u.l)k3vz 5 dyrd.0 e7*5 zop3s 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,mhfis, 3w 4ly26h clr Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. ,e;,ayyyq2:gz;e ywa;s:zp aThe first charge is larger in magnitude than the second charg: yaaz;wey ,:2g ;zesqy; pay,e.

  Sphere A carries a net charge and sphere B is neutral. They are placed near *3b 7cs0up vkstq k*cb0+s-ls each other on an insulated table. Which statement best describes the electrostatic fo vl b-k70 uq*k*+c3sbtcss p0srce between them?

  Two charged objects attract each othe x26zeirvxv, sr)4, ijr with a certain force. If the charges on both objects are doubled wi4)v, z2,xies6v rrj ixth no change in separation, the force between them

  Two charges are separanc4lk rg vs.z3xv 6k11ted 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 1 l.g4nvzv6kcr1 x 3ksare the new mutual forces?

  Two charged objects attract each other with a z*r jpn2 v1d5mforce 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-fourt pn1r vj*mz2d5h its original value? The force is now equal to

  An electron and a proton are separated x4yl-m pzfy6-by a distance of 1.0 m. What happens to themypz-ly x6f4- magnitude of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separl)d:x 02domgiw//m bqb98ktcated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second electro/o tbg 0dd2wi /8k c:)mxqb9mln is placed next to the proton?

  An electron and a proton are separated x0,f+otj qo97 qtsab7by a distance of 1.0 m. What happens to the size of sojao,7 +q9x7 tftqb0 the force on the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q i-3)uapal(; okdzli-v 67tzz es placed 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 at the square's center. Now, identical charges of -Q are 7()z;ida-pz3 vk6l etlu-zoaplaced 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 phvnwu 4 :k36kmkd3j ,/ 0cr.x tpo2uewlaced at 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. What is the magni, k6ux4v3 h 2mck u/ek pnj0.do:rww3ttude 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 vector?*2zt vl v)tu4rvnsh9+

  At twice the distance from a point cygwd q a9pl 7:zk:1xh,3 5aoocharge, the strength of the electric field

  Is it possible to have a zero electric field value between a n- h-,ole*dv akegative and positive charge along the line joining the two cha ed *kvha-,l-orges?

  Is it possible to have a zero electric field value between ta 8m xgye8w y(;6wwx/hpci; )owo positive charges along the line joining thhwwg8 xa() ey/i86wyp;moc ;xe two charges?

  Electric field lines near f*4cq3zgsne w2:5(ucd l v1whpsitive point charges

  The electric field shonnd/-/-4o jj halt ab.sb6k3 swn

  Can electric field lines intersect )qknhyna8w 180i 6b ilin free space?

  A solid block of metal in electrostatic equilibrium is plagmqq9-co iv dr 6ldu1xh5g50v*x:* nr ced in a uniform electr :gxrv0 oqv lh-x9m1 5*5drqi *g6ncduic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and p9(x xg9v)/am; ckgmxug 52hb a hollow metal sphere of equal diameters are each given the same charge, the electric field (E) midway between the center and thepxbx/ g;c ( hxu9gmg9k)5a2v m surface is

  A cubic block of aluminum rests on a wooden table ie 8; mb8gx dm0 96zt ;surzk8m/ixv+uzn a region where a uniform electric field is directed straight upward. What can be said concerning9uzk xr8 x+m0bmev 6zui md 8;8g;/tsz the charge on the block's top surface?

  If a conductor is in electrosta54hquxh4g e0o tic equilibrium near an electric charge

  A positive point charge is enclosed in a dahey81bwtu i1 4b,b( hollow metallic sphere that is grounded. As comibd1,bue hy4(b aw8 t1pared 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 staticgdqh qjc+(4hxxm 8s1:;lb i)a equilibrium.

State Gauss's law.

  The charge carried bs:c66r k1(. k csahpjt1 0qlwuy 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 char7xp ggg 2o)29zctote4 ge of +2.00 mC. How many more protons than electrons does this piece of plastice2oc7zx )tg2 gp4g9to have?

  What is the charge on 1 kg of prot,*rb5brt bd :uons?

  An atomic nucleus has a c:k/,rvzezwmll 7 .+a charge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separates s ,jvae*mkww6: 2pq*d by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. Wha2p: mw,jq*eks* s6vwat is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge9 hcad ygb/h ,tc0-qp*, and the force between them is 1.0 N. What is/hdh9byt agc-cq, p0* the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1ah1s (7c+wqq y.0 N. How far apart are they?

  The force between a n 4y8c+,,k8bisnoni 5mjj z7y$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experiencxd.a4w9o ug+ ce a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between t9udcw.x 4+ ogahem?

  Three identical point charges of 2.0 mC are placed 9 edqa yz*iq7z 4oms9,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,iz9*zysm e74od 9aqq 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 a9m,7se(o uly ocyt y52t the origin, -2.0 m C to the right at x = 5y97c 2eyol(m t5s uy,o0 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 locate7f-*g phc6g,h ;a /kjn0dtvd hd at the following positions: Q1 = 2.00 mC at x = 1.00 m; Qgvk ,-jch n d*0hp 6g/7d;htaf2 = 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?

  A point charge of +Q is placed at the center of a square, and a second poina(*ug mathiad9 19nn1 t 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 tn d9a* a1(ngh1m9 uaithat 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); Q3 = 58vyb1h*4 yrwebn9 1arq yxa2j q;4c- x.0 nC is at (0, 0). What is the magnitude of yx- wahqr1 1ce; an4j* 2xq9b8rv4ybythe 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 nCjy:s 4 d0n1tum is at (0, 0). What is the direction of the net force onjym: 0sd u14tn the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the(u)a 7v/)k8 rc,oboffiqu*r y a1fj*q vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force w bcqur/)ofoaf8,*ay(r *j 71ki)fq uvhich acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are m q1;yvs v.hc7 /; wn(utr d7x*yqvb/gseparated 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 thqu;t/*xybyvg mdc;wv /h17 vsnr7( .q at the electrostatic force acting on it would be zero?

  A +3.0-C charge is at 8 nl(p6sg1nxs the origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be1 lpsxn6n8(gs placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -qyoxx3+vhk ) (r5+hb*lp yw)bw is placed at x = 2a. Where can a thi+hp )b5 xb* w(k+ )y3wvxolyrhrd positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. Ahco9a3 nig:y2 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 ol65 x.c p7;:sdtwqcd zf a fixed proton some distance above it. How far a d; sql7.z:cw 6dpct5xbove the electron is the proton?

  Two 0.20-g metal spheres arutp2k s1 )een0k*q4rtp8pd +4 ug)khpe hung from a common point by nonconducting threads which are 30 cm long. Both are given ident4+kp q )e8ukt*0 gepp4s 1uphn r)tkd2ical charges, and the electrostatic 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. tcufw5w0/h c8( k,hoqzo w3.u What is the magnitude of the electric field at a distance of 1.0 m from the nqwu 0chhf(,w85zc /kto3 .owu ucleus?

  What are the magnitude and direction of the electric field at a distance of 1. (s+sdtu-d p5u)0fe wdf0r fu050 m from a 50r uptddf w +0d50 e-u0s)(ufsf.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of thegyd1 hz4ze.-a-d-ydh electric fiezddde.1 -4az hgy--y hld at the location of the test charge?

  A 5.0-C charge is 10 m from a small tesqf.hdt +8) zulz56wjwa(flz8 t charge. What is the direction of the e.hw8u8fdz(+qtf 5 l6aw)zz j llectric field?

  A 5.0-C charge is 10 m from a small test chargeaj6gts): nbzxz) n9q-y( ))ij2op t zx. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test cga n6jpbtzy)s x)( :)9x2 )i-tnj zzqoharge?

  Two point charges each have a value of 3.0 C andae/ , nla+-y)upyuy5s are separated by a distance of 4.0 m. What is the electric field at a point midway between the two charges?5p/ + uy-eaauysy)l,n

  A 5.0-mC charge is placed at the 0 cm mark of icy2b0,3rr)v;5b .mk g 8zd-z es4rky5tdl yt a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electricvz8z55. c43tbs)mek;, i dkryd0-lt gryyrb2 field at the 30 cm mark?

  A 5.0-mC charge is placed at the 03i *lid bh3ey9we1,wmezy 0 gv5a 5y0z cm mark of a meter stick and a -4.0 mC charge 1 d35*eaeym9 e bg 0i3w0vhyy i,wlz5zis placed 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 -7.0zg2j k t56(dpj(if8hw mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway big8zp fj26(d j(twk5 hetween them?

  Three 3.0 mC charges are at the three corners of a s- wyq2hjrc/g f* vo1m4quare 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 sqr 2j4f g*c1/vwhomq-y uare.

  Consider a square which iitpty q.1l,-xs 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 at (1, 0); -3.0 mC at (0, 1). What is the magnitude of the electric fieldyp-ixlt1t, q. at the square's center?

  A force of 10 N acts on a charge of 5.x bn+f bmr.g+w(tbz670 mC when it is placed in a uniform electric field. What is the magnitude of this electric ftrz6 x. g+w7n(+bm bfbield?

  A particle with a cha r:up86arf i1xrge of 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 6000 kt:1x2n;a.nix * he-- wnsjqjN/C pointing downward. What charge must be placed on the ball for it to be susp-nje:;1 xj *tkwnsn. q-ihx a2ended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is placvem 1yyxeqqitrtx)ku4 +2/ u85h6u0 ked inside a uniform electric field, and is suspended against the force h/1mvi)4y+ tq kk 5tr8uuxq0exy 26ueof gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charga7o 8 yqf8hpzw8w0d)wlj ;l r9e of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's ljr80 zw89wh )a8oqlfw7yp;dsurface?

  A metal sphere of radius 2.0 cm carries a charge w7 b:02qsvlvwhqw60 w3;frlwof 3.0 mC. What is the electric field 6.0 cm from the center bl7w0 q2wf wrqvws:;3l6 0hwvof the sphere?