State the law of conservatio9du 2oog45bkgn of electric charge.

  Is it possible for two negative charges to attpvsx)(7fan ly98jnw4 ract each other?

  Is it possible for a positive and a negative chargelb 1:aqw9gs:i 7n 2jtp to attract each other?

  A glass rod is rubbed with a p-xsp*cgybb7 -p .9u .hi8dj af2y+yib- a hh;biece of silk. During the process the glass rod acquires a 7-bhyp dbb psy 2b;.iyxj 8a hc9f+g-* a.uhi-positive charge and the silk

  A proton carries a

  The model of the atom mhzt8s(5cz w4 shows a

  A neutral atom always h9ybu9gfbfi y xl/m* :.o5lb 7ras

  An atom has more electroukknf g( k9q16s zv,9pns than protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei areiwe lsj+pymx3ld;o8a8gh ;9) referred to ase+p9 8a)ljohw gd is;x3; ym8l

  Materials in which the electrons are bound very loosely to the nuclei and can 3d:0 x1vip)vp umh ( mkv:bg3ak q+-xcmove about freely within the material are referred to auv (-k33 xapvxipkm:cmd+:)v1qg0 bhs

  A negatively charged rod is brought near one end of oh:o9z h.fku27u,hsr an uncharged metal bar. The end of the metal bar farthest from the charged rod will be chuho .:o,ruk2h9s 7fzharged

  Sphere A carries a net (mksrkfs0ps8z.7g:g6h0 aj hhk5 wx. positive 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 statement is corre kg 0kh zhrgpx5.m0w7j (8s.6ks sa:hfct?

  How can a negatively charged ro dmie.9h1sd ;zd charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a pci4yg08, jd 3okx2n ycositively charged glass rod. yj8dxk o0n2cg,34iy c The electroscope

  An originally neutral electroscope is groundej v7ls 7 e(im:ifwb:b2o:ill/d briefly while a positively charged glass rod is held near it. After the glass rod is removed, the elvli(s :: i2ol l7bw: b/efij7mectroscope

  A positive object touches a neutral elr8416gb qquzf ku) 9lnectroscope, and the leaves separate. Then a negative object is b)u194q nl bkfr6quzg8rought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is poj r(* gng9llrxbk,:g/k92 yglaced on an insulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along the patho(g/ xjk*gg:9bg rkn9 rll2,y 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:p- dndosg-2w :in:xm constant $k$, which appears in Coulomb's law?

  Two charged objects are separated u k4wv o)u;lz09 nd;ecby a distance d. The first charge is larger in magnitude than the se0z 9; vneoc4;u lwukd)cond charge.

  Sphere A carries a net charge and sphere 41qe9o *izp syB is neutral. They are placed near each otyos ize4 q1p*9her on an insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force.ac,*5bmqa,gc10 yc ao If the charges on both objects are doubled with no change in separation, the force between theca,g 1aa0 qo*mccy,5bm

  Two charges are separated by a distance d and exert mutual attractive fo hu 6iel/ q;0e:zs4pbsfiyz,r+00ob urces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual forces4 :q+bz s isu0 uiyrb0 ;lh6foe/ze0p,?

  Two charged objects attract each other with a force F. What happq yqigs)n dq9v;8 j4 dbp71/skens to the force between them8v4 i)y gqqdj p1dkn/b9 s7;qs 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 now equal to

  An electron and a proton are separated by a distance of 1.0 m. xel 8stqr3 2h:What happens to the magnitude of the force on the proton if a second electron is placedstq2 er :8h3xl next to the first electron?

  An electron and a prot rj woj 27h10rai7usltv ;5lm;on are separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a second ele jj s;a ;li l02vt7r75uwormh1ctron is placed next to the proton?

  An electron and a protonw)9j;j(.zif7nyk t cn are separated by a distance of 1.0 m. What happens to the size of the force on the protyznj.f 7tij kn w9c();on if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When p;6 tx-*,zhnjqjj,y l a second point charge of -Q is placed at one of the square's corners, it ,q,thp- ;xjlj*6nj yzis 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 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 re7ct/gz ry . : cff-matil+ 8hra.6u.equilateral triangle. When a second cha z.7y a fgc u68rl+t/:t.ema-irf.chrrge 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 vertices?

  Which of the following is not a vehpnn7/h 4qn) actor?

  At twice the distance frojse dii0fohwwy/6 d1 8s+wvmy 95v1r 8m a point charge, the strength of the electric field

  Is it possible to have a zero electric field 8yz/7 d1zxnu0kfy7x svalue between a negative and positive charge along t syyz1u07x8n dfkz/x7 he line joining the two charges?

  Is it possible to haveso4uj m0h cf,9 a zero electric field value between two positive charges along the line joining the t mcjsu,f 0h4o9wo charges?

  Electric field lines near psitive point ch*m glew3ap7cu 9qh0p9arges

  The electric field shwn3ys9 qtnl )9own

  Can electric field lines intersect in free spacekh te 7v 46*+-yfakrsf71b pgo?

  A solid block of metal in electrostatic equilibrium is placed4a1e;q6kv7yxa) ru1 pfl/u w h in a uniform electric field. Give a statement concerning the elec1ry1)6p/e7w avf axh;qku u4l tric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of nf/ho-g,28tyb +gyk p 5omog 3equal diameters are each given the same charge, the electric field (E) midway between the center and the surface +gp gky2 ofb5 ,ht-/8go3myno is

  A cubic block of aluminum rests on a wooden table in a region((dja p3qa le7 where a uniform electric field is directed straight upward. What can be said concerning the charge on the block's top sul7qae 3daj ((prface?

  If a conductor is in (q3p:(z epwwj-x aj6 cs,eg;el(jc6x electrostatic equilibrium near an electric charge

  A positive point charge is jha w( aqj m;0 ::svtnr4 (rl(vyqu67ienclosed in a hollow metallic sphere that is grounded. As compared to t(hry vus :jaj47v(aiq;w6r qn0lt(m: he case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of coy -eowz4eq7z9ak 0oolf+9/iznductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron is nu8-spp9h /zv$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has 2hr)o1m f- wii9tfkuz:3jf t(a net charge of +2.00 mC. How many more protons than electrons does this piece of pof )2 jfh ttzmik -w(9f:13irulastic have?

  What is the charge on 1 kg of protons?iaq 1.0zega v( bc.v2z

  An atomic nucleus has a id.* .rde(s ozu2v3tbzf9e 8ucharge of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, separa0drkpsdx(7j h s6mgj1u 6:nu8 ted by 1.5 cm, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric0dg m7 :xj 6rdnjhksuu(s816p force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1vdsp by81mr8ib,b l 9,.0 N. What is the magnitude of the secondbmlv,psb8 ,r i 8y19db charge?

  Two 1.0-C charges have a force between them of 1.0 N. n0o y b8xg:xpwbv435 ls1qf+ mHow far apart are they?

  The force between a ldn.pwtsoh ld2 )cypg4(.5r5 $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expericl4g;:/wv: kdoj xup0c*gmd +vs0+ flence a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwo*uc:+g0x lwvkg;0+vl/ d 4 pscfmdj: een them?

  Three identical point charges of 2.0 mC are placohdl(917zed- o:x o 8l3spdc med on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm,dlc:7 e9 szhd- ol 1xopd8o(3m 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 l9z p;q:xb dr19 i0opux-axis. A charge of +2.0 mC is placed at the origin, -2.0 m 90q zoipp1x9u bdlr;: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 are located at bs pb8x29vzv. :j fxe(the following positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.0vzxe9pf b2b.j(8vsx :0 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 o (rb/xtg-fkm4k -5fexf 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 charge at the center. What is the magnitude of the force that acts on the center charge if a third chargb( m-ex5k/t rf f-4kxge 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 ke2+i/sm 3vcm) *uq g:ud84eknr bh-: w+vgwjat (0, 0). What is the mv q:ic/kwves3uw) +j8h-b+r nm*mged guk2: 4agnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 w8me)scohs-s q /2o 5lr7: lfw= -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the els wl 2/7oqo: sr-sf c8)mw5h5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the ver-/yixl oa3x/.*ty s fitices of an equilateral triangle which measures 30 cm on a side. What is t yfo/-yax3l iixt*s./he magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whichh7(z4jsw /6asn m;tbr are separated by 3.0 m. At what point, on zb nm4/wrst;(hsa6 j 7a line between the 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 tcrl8v/.h ca r;w0w ag(he origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be pla(0vr8 ; war/.gwhcclaced so the net force on it is zero?

  Charge +2q is placed at the origin and charge -l wo.- b/e9l chc n,l6c6i5vaeq is placed at x = 2a. Where can a third positive charge +q be placed so that the.cbl-5 i o6lv/nc6wl, ch9a ee force on it is zero?

  A copper penny has a mass of 3.0 g. A tot/q61 gntne v;fal 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 forc4c;;sdfz bw:h ai*s0ge of gravity by the attraction of a fixed proton some distance above it. How far above the; bdfwa*izs0g sc h;:4 electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconducting threadsn5he: g;x1ncf which are 30 cm long. Both are given identical chargf5e n:1xcnh; ges, 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 ar ;e/wo qw,lb: charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m frob:w,e/q;w lr om the nucleus?

  What are the magnitude and direction of the electric field at a distance of *f,3rojhf97*du 5q nzx ucq;x1.50 m from a 50.0-nC charge?rn9*f*;hduu5q3 x q,jc7oxzf

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude ofamt r;ksr pp/ehn5:)gk6a6icx56g 5b the elec np/psm6 :k55 irbtahge6)ag 56 rckx;tric field at the location of the test charge?

  A 5.0-C charge is 10 m ga +62ge qo4zxfrom a small test charge. What is the direction of the electric fielqg2xe6o+agz4 d?

  A 5.0-C charge is 10 m from a small test chargdvl*r z// dds/q./ ilke. What is the magnitude of the force experienced by a 1.0 nC charge plar /*d lk///i.qds vdzlced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separatonj++ p61qgac0yd *ov.s 3hjr ed by a distance of 4.0 m. What is thehjgd*r3+jqp1+ vn a.o cyo s06 electric field at a point midway between the two charges?

  A 5.0-mC charge is placen05 3ygig/:fj jybk*rd at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. jr3kgn0i : g*y/j 5bfy What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a 1gyzz; ld(z 8emeter stick and a -4.0 mC charge is placed at the 50 cm mark. 8(zz zg dey1l; At what point on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC ans:zv2bu0w b3:pjdoepx9syf5 27 0bxxd -7.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point mixs 0p x9pyz:du 0s5vebfox :bwb2j27 3dway between them?

  Three 3.0 mC charges are at the three re 3q;d9rx)ws1rzz ,i g rdp5 q70evp3corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC char esg 0zpdqpriq;d5 ,7exr3z93 vw) 1rrge. Find the electric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed kffm3f/ j; rrohi-/ 1cat the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1, 1); +3.0 mC at (1, j1 -c /r/fi3rkmo; fhf0); -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 chgn(l2 zt6uw -2b 1itd gcc.hv4arge of 5.0 mC when it is placed in a uniform electric field. What is the magnitu zgt h4c6nw uc(biv.g-1l2 td2de of this electric field?

  A particle with a charge of 4. *jqvfj4) 0zr. gfzahx4l (dq8r8fu (h0 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 dk:n3/jut :tix4pg wlw(jvs 8g) xi w-ln0k*,in an electric field of 6000 N/C pointing downward.kjj*t,4 nunsw8lt:)-v :xlwgx d/k3ig (i0pw What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. T/sm3lkjz ujh2 n5d2sm 4av 0/hhe ball is placed inside a uniform electric field, and is suspended against the force of gravity. What are th umdv50k ss/224hj hj/ ma3lzne magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of +2.0wfopb1 6h1s4 m q2aa9k mC. What is the magnitude of the electric field 5.0 cm from the spswb9kp q1ma21f4 ho6 ahere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC.df(z*ap4l rt7 What is the electric field 6.0 cm from ther4 zt f7da(*lp center of the sphere?