State the law of conservatio06 uit,bqscr .n of electric charge.

  Is it possible for two negative)sm*iggy(d b 9rtn7i9 b*amj: charges to attract each other?

  Is it possible for a posito(j83 k;upd skive and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the ;gag yn:dq kk59jh1 5tprocess the glass rod acquiregh5 qytd g kn5k1:;a9js a positive charge and the silk

  A proton carries a

  The model of the atomc ,toooy3 ti.0xc(l4n shows a

  A neutral atom always h +0;xwhmrcrban(//d;w 7lz ws as

  An atom has more electrons than p*o 9dw hr0;+l3twhoqx rotons. The atom is

  Materials in which the electrons are b,hw 8 l-l- ,xr2hke:vum3wxwr ound very tightly to the nuclei are referred to -3hlwrh-x, x, uv8:2wm w eklras

  Materials in which the electr1*qr5o+t jrfx z.t8v aons are bound very loosely to the nuclei and can move about freely within the material are referred5tt ro+1*.q jz fva8xr to as

  A negatively charged rod is brought neml )fofntyg;+-, +ud49bfu l har one end of an uncharged metal bar. The end of thnuug mfb o)4,fl;l+h9y-dt+ fe metal bar farthest from the charged rod will be charged

  Sphere A carries a net kd1 4p s*zre(vo)2*f u1zl(y.guxjwq positive charge, and sphere B is neutral. They are placed near each other on an insulated table. Sphere B is br (2xf*zlu.v) sz(dwo*1yjgrk14p euq iefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope positivelzx8e*ss t/9x 5y/t anpy?

  An originally neutral electroscope is briefly touchedn-tlc9am kvha-4 vlp59 who1 , with a positively charged glass rod. The electrk,-lnpv chwota9549a-lh1 mv oscope

  An originally neutral electroscope is grounded bri86ejeq o vjflyf 988 jgyb6 ;abxm2)q-efly while a positively charged glass rod is held near it. After the glass rod is removed, the 8g v9m6;j-y j2bafl8q b6ojy8)efexq electroscope

  A positive object touches a neutral electroscope, and the leaw4pl3eei/18 tgb9a(emc8e j yves separate. Then a negative object is brought near the electroscope, but does not touch it. What happen 4ljw(8ytpce8g/3e ei9 me1abs to the leaves?

  A large negatively charged object is placed o bxe*eg qfd-d;io66-on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral met6d;oo-qxgede*-6 fiballic 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 u5ekkcpgom +kqh+o 3vvde 3;z4v;0p, constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge-w d9gx9rp/r x is larger in mag9gp /9xwrx r-dnitude than the second charge.

  Sphere A carries a net charge and sphere B ir3kj48whau i0 ac 38zrs neutral. They are placed near eacr43aw 8 8zick0 auhr3jh other on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other wit- b ihoj*vlc,7h a certain force. If the charges on both objects are double,bli-co* v7j hd with no change in separation, the force between them

  Two charges are separated by a distance d ano 6zqqe:o4-ptd exert mutual attractive forces of F on each 6-z:qqo4te opother. 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. p9r8ewe /oxn 6t1ilz/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 iorl/896 xp tez1we/n is now equal to

  An electron and a proton are separated by a distaan+*2 pb u eq1ve382xcwbwzp0nce of 1.0 m. What happens to the magnitude of the force on the proton if a second elec+x v*zn08 eqaw3pcb 1e22bpwu tron is placed next to the first electron?

  An electron and a proton are separat1jm9(tuc5.bt:5jsd(z el el ded by a distance of 1.0 m. What happens to the magnitude of the force on the e s1djb5cetlm 9d5.(uzt:l(j first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance o;o55 bd fz:gajf 1.0 m. What happens to the size o55jfbd o;a z:gf 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 tpm27-o4 nwgs1-kcrj 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 ch74o 1ms2tncjw-k g-pr arge 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 at the centroidn. r-la/d 0-gl-ysyyj 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 magnitude of the force that acts on the center charge due to a third charge of +Q placed at one of the other vy0nlds./y gj-yr -a- lertices?

  Which of the following is not a veib9t6bni /ro* ctor?

  At twice the distance from a point charge, the st52ug .ymics*y rength of the electric field

  Is it possible to ha yg xi., ieg*tf42i) sbb3v+skve a zero electric field value between a negative and positive charge ivks+2,3 g i4eg.iyx tf)*sb balong the line joining the two charges?

  Is it possible to have a zero electric field value between two7r/hkbf cg4 e: positive charges along the line joining k 4rhf:/ebc7gthe two charges?

  Electric field lines near psitive point chargec8ivk x*4alm 3c82afks

  The electric field sh7ycvah9;r g1;8t n6d uop,sghown

  Can electric field lines intersect iy1/x botghx) )n free space?

  A solid block of metal in electrostatic equilibrium is plch.a v(ljc7e/aced in a uniform electric field. Give a statement concerningj/(ev7c.l ha c the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each g8fjji 7o u)pt4 mf/v:uiven the same charge, the electric field (E) midway between the center and the suri7 uj f/8m:oupt)fvj 4face is

  A cubic block of aluminum rests on a wooden table in a reg: gok3wu(*8p5 iwpmsb ion where a uniform electric field is directed straight upward. What can be said coo*g8 m bu pkp3wwsi5(:ncerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric 9ns 5uiyb2va8ti)/)lvb :k w ucharge

  A positive point charge is enclosed in a hollow metalli.e1s;;*kp3 gj njcvwi c sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a pointgi;njjew *cp1v;. s 3k directly above the hollow sphere has

State three properties of conduxq3c0m, pn 1f s/7mdwi zh)uo:/tx+jp w3io:wctors in static equilibrium.

State Gauss's law.

  The charge carried by one electronq*k01gpe;( vxs(w fhl 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 mo i i/mjsq;;2vjre protons than electrons does thji;;2m vq /sijis piece of plastic have?

  What is the charge on 6ym 5bo* ei5uv1 kg of protons?

  An atomic nucleus has zt21k f4 k,ete9t fq7xa 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 charge values of 2.0 an:ys.)bqjvk pt(;zd5+ueba/f d -4.0 mC, respectively. What is the magnitude of the electric force (qv/d:) f5tkyapju+ b b.s;ze between them?

  A 1.0-C charge is 15 m from a second charge, and unau; y5o-o( 5xpa7arthe force between them is 1.0 N. What is a-oau5ou(;n5p 7 aryxthe magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N.(d+/i2;sr r 3m cv*t uqj7tks)q,w joo How far apart are they?

  The force between a p 2/po8ps wqy5$30 \; mC$ 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 force. If they-ah1hvn/b7 ,tm1vy8/ h aaxel are moved to a new separation of 8.0 cm, what is the electric force betweeha yeh1,7-tnxa/h/v 1ba vlm8n them?

  Three identical point charges of 2.0 mC are placed on i- geru; cq:f+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. Wharc i;e-fu:+gq t 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-axis3q2r b/p j8cxv0u)gh x. A charge of +2.0 mC is placed at the origin, -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 th qxg8r 03v2ubpxj/) che origin?

  Three point charges are fyprw u38:k70o u6zv,-q a rkhlocated 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 = -vu kyo0qfa8 :3 -ru7 wzkp6h,r1.00 m. What is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q:,v (/jzbuj st is placed at the 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 cha(z bs/ vtu,jj:rge 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 io1vqky;. 0 udzs at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the mauqk;.o zy10 dvgnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 w9:hl d)(5pc)b*qf8 ztkt kk3o/qbat= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0):b *otc qbak98lh k) zt)d t5q/k(f3wp. What is the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 sntifixa/*pz-r 3;b )mC are placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on ps i r/f)*ainzx -b;3tany one of the charges?

  Consider point charges of a* aejp e;w45 q)htsn.+Q and +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 charge of -Q such that) 4pq;eejhanw5s* t.a the electrostatic force acting on it would be zero?

  A +3.0-C charge is at the origin and agvvj3ypg;n0.5 ac2z e +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 onnej03cvgv2a.gyz 5;p it is zero?

  Charge +2q is placed at the origin and charge -q is plz:knb 0raq4; raced at x = 2a. Where can a third positive charge +q be placed so that th0n 4rqkr bz;:ae force on it is zero?

  A copper penny has a mass of 3.0 g. A(62bju:hh7l0jqcs mv 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 t0/w rw snp40s9 5refhphe attraction of a fixed proton some distance above srr00 4wh5n9ppfwe/sit. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common xj+hs6n ag8 x;point by nonconducting threads wh a8xg+xsnj h6;ich are 30 cm long. Both are given identical 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 iaa(t()3 6peenmn 6hi+40e. What is the magnitude of the electric fimh n366itae)(p a(neield at a distance of 1.0 m from the nucleus?

  What are the magnitude and direction of tw/eyw xd1)s 6khe electric field at a distance of 1.50 m from a 50.0-nC char w)w/6xdk1sye ge?

  A 5.0-C charge is 10 m from a smalli047 xtox*aurqt n9r, test charge. What is the magnitude of the electric field at the location of the test ch 9*tnxuq74, a 0troxriarge?

  A 5.0-C charge is 10 m from a sm6ez sbqq**pd 7r,czn ;all test charge. What is the direction of the elqn,r;p*cb7d6 q *s zezectric field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit (uctrjtz n2k f w3* gr.g+3r:2b1sgrsude of the force experience1zg:rcn.32r23ft(*g tsb rug+skw r jd by a 1.0 nC charge placed at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separwf(5 a0hx;akad7 m f2kated by a distance of 4.0 m. What is the electric field at a point midway between the two cf 7k0a;a5km(d 2awfhxharges?

  A 5.0-mC charge is pla7-.qosn uzo1gi6- b flced 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 fibo. 1iu6nglz7o-q fs-eld at the 30 cm mark?

  A 5.0-mC charge is placed at the5nwmek*ldx,+n y egiqcgs;r78)zy;0 0 cm mark of a meter stick and a -4.0 mC charge is placed at the s 7, cmn0qe*n)e 8g;gwkz;5xr+lyyid50 cm mark. At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0*xtk2u:jc lqzsat :5/3kf 7,bi 6qgfg mC and -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway bet/ztqs7uxatbk:g g6cj:q ,k2 f3 5*fil ween them?

  Three 3.0 mC charges are at the three corner/9uh e y/y/binbbp3 0dy7i) jms of a square of side 0.50 m. The last corne ph0//ye/bdnb b jium )y79i3yr is occupied by a -3.0 mC charge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Cha4zaxgolm- jb2 .:eb 7ht 3sv(urges are placed at the corners of the squar:bmgus2z tb o 43.(ah j-x7elve 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 field at the square's center?

  A force of 10 N acts on a charge of 5.0 mf t66uff 9p3d,ebk *e:swi75znm8vkjC when it is placed in a uniform electric field. fpd 78mzkvswinu:e 3,5t66ffke bj*9 What is the magnitude of this electric field?

  A particle with a chargh oyk.q)u rc -bg2f3u/qw8na3e 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 N/C p kzu fz( vovuoaj/,)k. t:av1sx r:o47ointing downward. What charge must be placed on the ball for it to be sutvav( jo/ 4u 1xv7: kfzo.os)ka:uz,rspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The bi(-(zk/ x; uo4awjicsall is placed inside /ki 4(-;s w (auicjozxa uniform electric field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge o* )vpujz3jy r4f +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sph purv4j)* jz3yere's surface?

  A metal sphere of radius 2.kjh 1 yg iyoyh)9. h:0yx);glrs-6kka0 cm carries a charge of 3.0 mC. What is the electric field g6.l yx;0hkrhs y)gyah-)i :o9kyjk16.0 cm from the center of the sphere?