State the law of conservatz g/mbfn,1x; jion of electric charge.

  Is it possible for two negative charges t/u6l 1(h;a dh(uj0xus tvl.txo attract each other?

  Is it possible for a positive and a negative charge to attract each other? 50p, +h5o3w 7knwjkxpsnaf;d0ngyev(d oo,4

  A glass rod is rubbed with a piece of silk. During the process the gg :e)kwfm -43o6dgnh flass rod acquires a posit46fw kg3g-):nehmfo d ive charge and the silk

  A proton carries a

  The model of the atom s wzh*sc9n8)xwhows a

  A neutral atom always hasw1z7u6 jxjh 6z p-2utzg1w0v a

  An atom has more elec; lg *tbjknpcf 5yq886trons than protons. The atom is

  Materials in which the electrons are bound very tightly to the nucleis-8 ecu8 ew5l13v3lnj9konx a are referred 8oevxk ul j91lscw3-e 8nan53to as

  Materials in which the electrons are bound very loocsx1hdu,da/ , li7 1 kpve5s9hsely to the nuclei and can moe a5s ,uk, 7 1hdhxs/d1cilvp9ve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. Tlylbe,b0 0ynce,*( a1jh v t6mhe mn, a 0jl ch1le0ty*,b6bv ye(end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and srezmx1y6hy g su9h1hnf)9 q3m3b+t(ophere B is neutral. They are placed near each other on an insulated 69mu1b hq)rzyoy f xs9g+ne33t(hhm 1table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge anv(h ;z 9b2 zj:qoy;jbf electroscope positively?

  An originally neutral electroscope is briefly touched with a pow wa+odqc-ryf* hdd: d1km +.8sitively charged glass rod 8drh.- q: dkwcdo*wdym+fa1+. The electroscope

  An originally neutral electr02)x xcjo.lh6d w set,oscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrocse0 dxh6)2tjx o, .lwscope

  A positive object touches a neutral electroscope, and the leaves separ rng7x- 9ugi2uate. Then a negative object is brought near the electroscope, but does not touch it. What happens tigur 9g7ux-2 no the leaves?

  A large negatively charged object is placed on an insulated table. A neulykq;3: x;apazysp, px*8 2fx tral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic balpz pkf 2a8sy3 xaqxpl ;,:y;x*l 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 constan xkxf,0 ziutyt.m((9d t $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is largerkc6 ren* 0 ;d+wmfx/(ps6 ehfq: 9hb 3rb+wblk in mag96b*re6xw;ql (+nf pre0 3hhk :ckw/d+msfb b nitude than the second charge.

  Sphere A carries a net chargek0 he,uwd y36r and sphere B is neutral. They are placed near each other on an insulated table. Which statement best describes the electrostatic force be3 ry uh,0wd6ketween them?

  Two charged objects attrw-oe-+ / eh jekc;mwd/.sp:pjact each other with a certain force. If the charges on both -she+eoj-.d j kw;e m//:wppcobjects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutue;w njs** qasq 5o6zs/al attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual f5/e q6* sj*as ;nwszqoorces?

  Two charged objects attract each othert kmm7 m32otl8, da)aq with a force F. What happens to the force between them if one charge is doubled, tkm 8q3 ao,7d)2tamt lmhe 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 separat xf6s.r7r 5 g8xvy-qczed by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to theq7x x.r-z5 c8rgyf6v s first electron?

  An electron and a proton o+39v f 2w1ecyf03 qjwx, xbgsy3t9aware separated by a distance of 1.0 m. What happens to the magnitude of the force on q3cwa jf,+ 9o29wy1tx3xvygb3wesf0 the first electron if a second electron is placed next to the proton?

  An electron and a proton are separated by uru (o (owr*(8xvqu/ms:bj -e a distance of 1.0 m. What happens to the size of the force on the protonb(v8 oes*m/((q u rj:-uxor uw 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. vcb1+jf* m4w vz92zws:p lg,v 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 placed at the other three corners of the square. What is the magnitude of the net el1w9v2c: vm,f*b 4lvz s w+zjpgectrostatic force acting on the positive charge at the center of the square?

  A point charge of +Q is pla(gmcp93wdb 0.d8y ,q:rf rhmzced 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 magnitude of the force that acts cdm b8 :,d yp0(wqrf rhm3gz.9on the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followingsjmrij )8r/vw 3zm k/* is not a vector?

  At twice the distance from a point charge, the strength of the electric*(lry:e1lh 9s nqx c/r field

  Is it possible to have a zero electric field value between a negatives.g,bb kh8npa0 m4 e4r and positive charge along the lin0 r8h 4g ka.em,p4bsbne joining the two charges?

  Is it possible to have a zero electric field value between two pos2ijui34.j fvkitive charges along the line joif.i vuji 324kjning the two charges?

  Electric field lines near psitive point charges) sh12 d.iwx*gc-wugw;ubw 9g

  The electric field shown t7jspgh721 bh

  Can electric field lines intersect in free space.b4i nuxn,m k6k1 r84s uloedjp8j6 /f?

  A solid block of metal in electr;vu)6hqrj ;v rostatic equilibrium is placed in a uniform electric fiel;urvqjhr) 6v; d. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of,aft 7s-w+i9pxv;tdl equal diameters are each given the same charge, the electric field (E) midway between the center a,fi t-+9wxv; d7tpsland the surface is

  A cubic block of aluminum rests on a (79e/kx 8a, 6dj6uzhuhml m* ;hppekj5 v a/cpwooden 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 surfackm/ h8u9ld,7;p/ aj6ph vmpca6*(khjuz5 x ee e?

  If a conductor is in yvnv+k g7m4 4p2 rv1gmelectrostatic equilibrium near an electric charge

  A positive point charge is encloseib* /(f ju5sbld in a hollow metallic sphere that is grounded. As compared to the case without the suil*(/5bjfb hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductorsvd pq/od6*(4stdp)or;-wj lv in static equilibrium.

State Gauss's law.

  The charge carried by one e2)8-w h ;uwey9m zotivlectron 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. Ho5b)cimzr d:(u w many more protons than electrons doesdzumcb:( r) 5i this piece of plastic have?

  What is the charge on 1 kg of protonsnbc9vr) d3zw7b 0u5tm ?

  An atomic nucleus has atex;t) ( hbae5 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 9z6r mxmh7ri8mC, respectively. What is the magnitude of the elecmhmr8 r 76i9xztric force between them?

  A 1.0-C charge is 15 m from a second2ty iil/ zlad)r 34zt6 charge, and the force between them is 1.0 N tl6zdrzli i)43t/2 ay. What is the magnitude of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?4xq* p r0g7 rycj2ebo)

  The force between a 3 a1jmnk6u. v1g g7tgq$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cme9(zfpin+m v , apart, experience a 1.0-N force. If they are moved to a new separation of +9epfv n,i(zm 8.0 cm, what is the electric force between them?

  Three identical point c y9cx-:bp08nypmu*sh 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 mm-p 8hucxy ynsp*9:0bark. 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-ax3gj (l 2qe a)u9p5 bt.b-r7gihf zl.bcis. 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 thj a5u .lp. rh9giqb(g2t)zf3-bce7 ble 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 y2bwsw8o/g h :ffo9)w mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What is the magnitude yh)f89f :w/wow2 ogs bof the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second y hqovrkx.5bs-ffb(1 sa*70v 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 p x0 ovakv*s-fq1b5r7h(.yfbs ositive charge 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 ,zk/ cgaaa v38is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude k8gaa avc/,z3 of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 c*x,wxejd2tpcqb l2r0ld6 67 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction dpxl,6b lq70cx2rdwe*j t2 6cof the net force on the 5.0 nC charge?

  Three identical charges of ywq)6+y3g.da) w kukd 3.0 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 a yg +wawq) kduk36y.)dcts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. At vgnw)yf( p h.*what point, on a line between the two charges, would it be possif*gn yw(.p)vhble 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 = 4.0 m. Wvevnear klz742-2 ma ;we y-q5o6v e:chere on the x-axis can a third charge be placed so the net force oynzawkel 2ao54 e- mv-v26ecrv;e:7qn it is zero?

  Charge +2q is placed at the origin and charge -q is placedngra m yr 4q)bx*at0-; at x = 2a. Where can a third yrm-;bt) xgq04 n*aarpositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A to .bfm )lqm/lm+tal 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 attractio tif;faf*l( 9;kfh ep.n of a fixed i(ef;l fpakt9;hf* f.proton some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a com2e9ap hna(2op mon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostat( pe2 aanhpo92ic 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. Whbd) v 1*cv5:sv6yd isaat is the magnitude of the electric field at a distance of 1.0 m5 d:bvvdv s*6c1ayi)s from the nucleus?

  What are the magnitude and direction oegi n sg50.8dxf the electric field at a distance of 1.50 m frs gd8x.5i0 ngeom a 50.0-nC charge?

  A 5.0-C charge is 10 m from a smallalp9sp f i; o d8reh5xh3n6x*1 test charge. What is the magnitude of the electric fipnp6*9s x5e83ah r1x ;hlfdoield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the dirp;( pp0yko o0: wajaz5ection of the ele yakazpj0w;5(:op 0p octric field?

  A 5.0-C charge is 10 m from a sna yq,6 k i59ntf,he1rmall test charge. What is the magnitude of the force expehnrnay i6t9q ,k51f, erienced 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 separussu.4s kga +keqv47a 5b- )irated by a distance of 4.0 m. What is the electric field at a point midway between the two charges vi r4s -as5)gb.7+qsuuae4k k?

  A 5.0-mC charge is placed at the 0 cm mark of a meter udcko8/nwe / xgabg(8ad d(r78-0kps stick and a -4.0 mC charge is placed at the 50 cm mark. What is the elec/7-u /xpab( 8 sdng8 d8c(0kdwagorektric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm ;b(*oq q vrw6da) ab9amark of a meter stick and a -4.0 mC charge is placed at the 509obw6* abqa(r qvd a); 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 -7.0 mC are placed at x = 0 a1m 54ehfknqzl0 .ok -)-zei)+je zy bznd x = 0.20 m. What is the magnitude of the elb f+4zey )ezhm-le k0q i-j1o5z nz.)kectric field at the point midway between them?

  Three 3.0 mC charges are at the three +:lgyoi7y8v o* ks5z 5j0s ejnz/dcz3corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at t + ov*jz /n5oylzky dcj8z:s037 egi5she center of the square.

  Consider a square which is 1.0 m on a side. Charges are pl p+cr :7(tvm:zgur:xoaced 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 fieldu:7xrz+g p(:v: t mocr at the square's center?

  A force of 10 N acts on a chargabb4j u1;.t jgvp2ydb- qsc7 09wa7gae of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric70 c19g4apt-bb y;qgaj2adw7bs vuj. field?

  A particle with a charge of 4.0 mC has a m : pcge h;tvi5na:(m:oxve(wteno2 1: ass 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/Cc5yj* x -aj/+b rzz*lc pointing downwa+y/5 a*r c*bz-jczj xlrd. 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 nClhje2+q:ips2 . The ball is placed inside a uniform electric field, and is suspended against the forcj:lp s2h+iq2 ee of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carries a charge of zn*+cr1cymu50dzp4 rm i 6o/j+2.0 mC. What is the magnitude of the elecn61rzm+c4ipd 05ou/zc*rym j tric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2cjcsvk);7spv(w: vab-s g z24.0 cm carries a charge of 3.0 mC. What is the electric field 6.0 cm from the z)-agpc2 s(v7csv wb4vk j:; scenter of the sphere?