State the law of conservation of elec010,*kupwxo u -nep qptric charge.

  Is it possible for two negay/oni ,1unq t(tive charges to attract each other?

  Is it possible for a positive and a negative charge to attract each oth*pzf pcw,cs pvl-)- m)er?

  A glass rod is rubbed with a piece of silk. During the process the glasse9yby hx:i.vi q-.qu0 rod acquires a positive charge au: y v0b.iy-i9qqh x.end the silk

  A proton carries a

  The model of the atom glz;q8 9j.qvg shows a

  A neutral atom always8zul a827 oooq has

  An atom has more electrons t h8m/evtn)icwb/rl*3x sq*z42b3l i o han protons. The atom is

  Materials in which the electrons are bound very tightly to the-clo( 6q 2b6 n5jkz znw*o l/v2tv2tvb nuclei are referre/zn26kocw l2l( vz-2j5ovvnq6t *tb bd to as

  Materials in which the2nhsiuun5 5jnds0l:, electrons are bound very loosely to the nuclei and can move about freely within the materiajn:h2 ndns uis,5l u05l are referred to as

  A negatively charged ro8n;bm2k rr o-f f(vzrjtob yl7 -n *rf:7.j1dmd is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will b rrb7-or-dtm. 1;rlf27j* nv nymb8 oj(fkfz :e charged

  Sphere A carries a net positive charge, and sphe+a3ds/nfig+ gsik+q:c(f e io 99(iatre 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 is c i t+sd(ef ki9gqo g/fsa9in+3(:a+ icorrect?

  How can a negatively charged )pt. if b(s7lic, /umrrod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a posi tk age*x9th9u4*8hh d0kd6wy tively charged glahed4** 8yx 9twh6k0gd hka u9tss rod. The electroscope

  An originally neutral electroscope is grounded briefly while a5keh g5mhh,; k owu1/i positively charged glass rod is held near it. hwk ; emohhg5i5/, ku1 After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves separate. 45k5skm0/ n ho-1slrkrp6o e1gqq1qfbmc.w3 Then a negative object is brought near the0k61bqs lo5 msk nrc.kq 1rfmw1qph/ - 53goe4 electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulated table. A neutral mew gklq+ h+)co3tallic 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 tho)k +3+hc qwgle 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 thi-f5tgd4iq k9vy ; qt6e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance dxf y*s,a*1 f( rc,j)/jtujzyl . The first charge is larger in magnitude than thsfcx1 t,y *u( ja),y/j jlrz*fe second charge.

  Sphere A carries a net charge and sphere B is neutral. Theyh*e n09dnc9 a5bzga s2 are placed near each other on an insulated table. Which statement best describes the electrostatic force between ze9*a95h0 c 2 nnsbgdathem?

  Two charged objects attract each other with a certain force6umif7,xltn 1:e :w qclosu+ f.d:ok+. If the charges on both obje un:l:ow ,.uq1i:+ +c fot76dflexms kcts are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attracyuirtu)2*5lmfa e ze z(3av6/ur+c +ttive forces of F on each other. If the chtau uz *t(e c/i 2 ruz)3mefyv6+ral+5arges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other ws/678*cc *;ghscr3 xc1 nw6dh t ejnbcith a force F. What happens to the force between them if one charge isn nwb1c*8c*sch73 h;6 ctrgjc6s/dex doubled, the other charge is tripled, and the separation 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 t* 1z8ekpzsm -cvkxu.(m ys; z(o the magnitude of the force on the proton if a se(sz e8ckpy.k*u ( vmxzm1-;zscond electron is placed next to the first electron?

  An electron and a protolp)ffk i59om+gp7r a,*wzh . qn are separated by a distance of 1.0 m. What happens to the magnitude of the force on the firsq) 7zra,+ph f m*kwloipg5.f9t 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. What happens tx nz7g128x4wrndnf 1dr k m)9 wv(buv7o the size of the force on the proton if the electron is moved nzw (19wr br 8xd4)n2uvm1n vfx7gk7d0.50 m closer to the proton?

  A point charge of +Q is plac(n. sl ve.gzu5ed 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 e s.elgzn .5vu(lectrostatic 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(u9 3zwgd v+tmq18ga k placed 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. gu8t vzd1w3 +q9m(agkWhat 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 followings : e vacn6):3rm yzm0n)qgm6y is not a vector?

  At twice the distance from a point charvapj/b g j9ug0j9hpb ;/(1v khge, the strength of the electric field

  Is it possible to have a zero electric fiel( g.0sq ;g be(burktt6d value between a negative and positive charge along the g0u(btg.s bq k6;rt( eline joining the two charges?

  Is it possible to have a zero electric field value betwszuv1xt vam/x6pg++0 een two positive charges along the line joiniu/+pax 0v g6+zsmxt1 vng the two charges?

  Electric field lines near p mgo;22p) fohgsitive point charges

  The electric field shown2-oh zaaavn4cp8aopae 3 y:))f *2iwh

  Can electric field lines intersect in free space?6 7.(.y ohwig2e aoafj

  A solid block of metal in electra902le5 f x-rwa cioa:ostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in the block':o0 l xrfi-wa95c2ea as interior.

  If a solid metal sphere and a hollow metal sphere of equal dik-se +3h( vuijameters are each given the same charge,(se- ik u+vh3j the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rewb0j4ma r8ei8t*m* sests on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top base80 jr* 84emwtim *surface?

  If a conductor is in electrostatic equilibrium near an electric ca8po1 g pu-;ph(ys1iy harge

  A positive point charge is enclosed in a hio+aekh j,n-0;pyf -g/:s qdcollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hoo,k/his;aqfjy +-g0: cn e- dpllow sphere has

State three properties of conductors in spv9 by()b;5m dzid1on -aoye:zx)k:vtatic equilibrium.

State Gauss's law.

  The charge carried by one electron34 +yxpvzz1sw 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 +2.0agkus;u: xm vo( (fg,40 mC. How many more protons than electrons does this uv mf(4ugx;: ga(,kospiece of plastic have?

  What is the charge on 1 kg ofpe iv;ch)0kz f 92vyr-vq p*g: protons?

  An atomic nucleus hasipy9ft00z tnuy )u)6o ub:pzc m+b53f 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 charge values of 2.0 and -4.0 m1 i, sfq37iqfjufvqc1. 9j kt/ :dz0f rw+6pmlC, respectively.dj3q,7:i6f + /9zrwtum f.pflj1qkv 1 qfsc 0i What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a sec i:t2wd hdpx-0ond charge, and the force between them is 1.0 N. What is the magnitud-h xtdwi:0pd2e of the second charge?

  Two 1.0-C charges have a force betwee9(d (qels96yyvh d/q rv;l pc 5)c*cghn them of 1.0 N. How far apart are they?

  The force between a pdw2 o8:t yzg8$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initii3 ig,1,c b/ qi0xytd2goc ,ipally 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force between 1,oiqgyg ,dx/ iip i3c c0bt,2them?

  Three identical point charges of 2.0 mC are placed v.derfu+fe- y *n5jeh; :.ubkon 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 je kfev br+.;.*uh:enu- dy5f 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 is placzb ;.he2y-de0iaodxq: d t +v*ed 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 electraee.+0* -otdqd2i :y xbh d;vzostatic force which acts on the charge at the origin?

  Three point charges are located at the following positions: Q1 = 2.00 mC at x =+k , jelvlp px8x3m*w: 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude of thee*3vp kj,8lpx wm:l +x force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a yu )hv+i u.wec8n2-0ctvw*h csquare, 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 cen v*hi 8 y-)ucnuwc+e 2v0w.cthter 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 = 5.0 nC is az1sw e :;r +exnjwt08ua(wl hj/5 1coat (0, 0). What is the magnituw8cr0lwtoejw;na z 1(5+je:ux/ as h 1de of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1*zf5 dnn8gf qq mk.r:4 hp7ry /.qogh5.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcegqq/npzdf q o8rk4:h*. 57.myfh nrg 5 on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the .v2mp e pkm87evertices of an equilateral triangle which measures 30 cm on 7e8kv2m ppe. ma side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of 6vap ;i*mjy v7s/yq +j+Q and +4Q, which are separated by 3.0 m. At what point, on a line between the +vj7pyys j *m/6ivqa ;two charges, would 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 and a +9.0-C charge is at x = w qcvi*sl+0* o4.0 m. Where on the x-axis can a third +0**v qwcsilocharge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is pla5+l2m rw0snr 1npk.npced at x = 2a. Where can a third positive charge +q be plw .kmnp +s5l1rnrn2p0 aced so that the force on it is zero?

  A copper penny has a mass of 3.0zrh o 7xq.w; ljd5o5 1wua6yl. 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 tjcf5kyur 3:ro05nyh 8 he force of gravity by the attraction of a fixed uky8ryncf5r:30 hj5o proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common poh2-.u1oo,1ok n hotyn int by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart untilo1,o1-yo n .u2ohn thk the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus has a charge of +40e. What is the magnitude of 6mrah:ugy15 f the electric field at a di15uymh6 rf: agstance of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric field at a di3 x8 tp0nczx m--dxgy7stance of 1.50 m from a 50.0-nC charge?mx 07zgy p-- dtcxn8x3

  A 5.0-C charge is 10 m from a small test charge. W -ln.dn uzy :jgecgm29. 4plc2hat is the magnitude of the elec d 2ynljn4 g.9zuecg:l2c-pm .tric field at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the di+,0n) txdzi bprection of the eti,d+) bxzn0 plectric field?

  A 5.0-C charge is 10 m from a smalt39p lb xdk1e6l test charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of t 1 etdblx396kphe test charge?

  Two point charges each have a value of 3.0 C and are separated by uzaz a5k;2m4w,rbl7 i .+jj baa distance of 4.0 m. What is the electric 4b ,l7ajaj.br;wak i2um5zz+ 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:4p:-u k q wo+rxcuggu. hog8l( 4i8-zgk6 zjy and a -4.0 mC charge is placed at the 50 cm mqcuo 8h8irk . :kylj-: -z(4p4gw x+oz6uugggark. What is 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 -4.00dy ;t/y6nbqzj* i (ei mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is the ele60tqd ye/jn; *i (yzbictric field zero?

  Two point charges of +3.0 mC and -7.0 mC are plas ilq9wm za*)uww7 p/8r8s7luced at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midalis8uww) /7u9 l*srmw8z 7q pway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 u3sy na.s k7xkpa opjw*1w9+3m. The last corner is occupied by a -3.0 mC charge. Find the electr k73jxawk1.nypw 9 * 3upo+sasic field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners r -l) 9jt x9k ju1qooq7v6c0qdof the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +j qo9qjdlt6 9o-vq c0 ku)1xr73.0 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 charge77fzqb)1k2a);k psyz gmeve9*ter /d of 5.0 mC when it is placed in a uniform electric field. What is the *yrkq9 m )g;/ezf b717d2e zsvktpe)amagnitude of this electric field?

  A particle with a charge of 4.0 mC haufxv+ gi; .dfr(kx, f3s 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 600mqd +k/a; /i/aqtdqn+ 2rov, b0 N/C pointing downward. What charge must be pla//2/r ; iqokt+anbv q,qadm+dced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge ofz rlf1 qdun)61yhb 1w s-/ia1b -2.00 nC. The ball is placed inside a uniform electrlwb 1rqa 1 -by6)df/uih1zn1sic 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 char:9y coqu(jej,xv dt) xbm u.c9okb.6 7ge of +2.0 mC. What is the magnitude of the elecb.jx kv cobj9yuo:me 9u qd.c(x),7t 6tric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0k49uucp) -)w sl3gd ae85bl8q-gz yv)j7s uao cm carries a charge of 3.0 mC. What is the electric field 6.sz-qvu)8gukaujgs w9a))e-bp58 c ll34y7d o0 cm from the center of the sphere?