State the law of conservati+ 6uyoeo:):z ;sdhkg hon of electric charge.

  Is it possible for two negative charges to attract each otherp*zt9eh7 1 rtcr q0fa7?

  Is it possible for a5iu)d 7uw mc-8jk1 hvb positive and a negative charge to attract each other?

  A glass rod is rubbed with a tse c xms 6 f3*o)ec dp7-st9rw902fkvpiece of silk. During the process the glass rod acquires a posit7 s 29 ke39ffs0tv )ersm*d cotw6-cxpive charge and the silk

  A proton carries a

  The model of the atom+z *p +b8gxqva shows a

  A neutral atom always has m )2iqc.dkysl;*eg;k

  An atom has more electrons than protons.:q 4 i*3puzedb The atom is

  Materials in which the electrons are bounda*e ./w6bz;j6nozx zf ll;rk ,io /.ot very tightly to the nuclei are referred to;lrxakotzf*w i ;6zz l. ,/oobe6/ j.n as

  Materials in which the electrdtx p3e0h)da jn19k w1ons are bound very loosely to the nuclei and can move about freely within the mate319t0pn wax1jkd) dherial are referred to as

  A negatively charged rc pr9gdzdnf8c1 )99dx od is brought near one end of an uncharged metal bar. Thec9 x8nd9 dzd 1prcf)g9 end of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive 1i*spnhycaiy0nq6. r ue,0/ocharge, and sphere B is neutral. They are placed near each other on an i 0cuyn.,ny a/r1o*06pehisq insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electroscope posi 0smi xj.k3w+(s6 qihutively?

  An originally neutral elect (x6ca94umb kwroscope is briefly touched with a positively charged glass 6 9kcawu(xm4b rod. The electroscope

  An originally neutral electrosci w8g-s0h8ahu 1sy7 7vcbmah3ope is grounded briefly while a positively charged glass rod is held ne0h wb1sy7a8 h8hgusi m3-vca7 ar it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscopesofbc /,ajx2i3s mxq 92yr7c: , and the leaves separate. Then a negative object is brought near the electr2ayio2q/,xmcjc3: bfr ss9 7 xoscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insula8gz+.n tai81hh kaqzc4s 34z 8wv2mndted table. A neutral metallic 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 the first ball, and stops. The first ball rolls forward, but does not touch the negativq sc1 4hk.azagz3znd8 m4t82+ 8nhiv we 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 th:5v4c,2:run:x sou4 k nl a7zj1-b yieedv;co e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated gd2j;qhsnyuupwi34: ja9 s )7f6 b. xpjzc)c( by a distance d. The first charge is larger in magnitude than the second ch:p)sjzw f 9c. bu7ng6hpuxciyjq( 43as ) d2;jarge.

  Sphere A carries a net charge and sphere B is neutral. The igo-jsyc;3s;u yi0a; y are placed near each other on asjs-;y;;oiu ci a 0g3yn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with a certain force. If the chrf v yfg;1e)3*f *b/l*jrcecz*j vj-iarges on both objects are doubled with no chang -veir/**j1lfcbjgvzyj*) rfcf3; e* e in separation, the force between them

  Two charges are separated by a distance d and zcozq zwa z 12hld-4 c5v-6p0pexert mutual attractive forces of F on each other. If the charges z6d czzz5w41 2p0-ahc -ovqplare separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F...ffn ns4v(z m What happens to the force between thevzm( nf.s4. nfm 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. What happebi7 ;j.tc + w0 z:jvs9rio.yc var8zx;ns to the magnitude of the force on the proton if a second eltiz;:jzcbijvw xo.70 av s9 8r ;rcy+.ectron is placed next to the first electron?

  An electron and a proton are separatetl/p+t-h7++ pu /j k.ocr aiyzd by a distance of 1.0 m. What happens to the magnitude of the force on the first electron izy/+rui+-c + h a.pkopjt7t/ lf a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.ydj . gtb4tv;,ruu+4sxkfi, u *gfk/40 m. What happens to the size of the force on the proton if the electron is moved 0.50 m closer to t u;f u4r+gx. ut* 4kks, /vij,4bfgdythe proton?

  A point charge of +Q is placed at j+ x/gym (w4m) 91guz-s czeelthe 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 placed at the other three corners of the square. What is the magnitude of the net electrostatic force x-/+(sy1m9g)4wzcj l gu zeme acting on the positive charge at the center of the square?

  A point charge of +Q is placed at the centroid of an equilateral1w2 wkmldt; q0 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 l0 m2tq k1dww;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 vecjdch7g;x8 l4ktor?

  At twice the distance fromg- 5d0lji,mc2aogx6j)a c : i n3eja/dtg +5ol a point charge, the strength of the electric field

  Is it possible to have a zero electric field yn.9.c/eyi5bqri ugz 7,egz. value between a negative and positive charge along the lq ieyzz er .u97b5c/ ni.,gyg.ine joining the two charges?

  Is it possible to have a zero e 0sq.ou)r0 yd3g fpmq;lectric field value between two positive charges along the line joining 00 .qoqsd pu;)gm3ryf the two charges?

  Electric field lines near psitive point ch )3zryl98jcgiarges

  The electric field shown:4jad 61hf/yesxaf kdov lp. );k)zv0

  Can electric field lines intersect in freeyz rm 1l5x-8 yemqf,v0 space?

  A solid block of metal in electrostatic equilibrium is placedmqu4 z0ncpqn5tao fra*h5; 00 in a uniform electric field. Give a statement concerning the electric field in the block's inu0aa zcnq*;0h rp5on04 tq 5fmterior.

  If a solid metal sphere ,gawl+e5q f9 hand a hollow metal sphere of equal diameters are each given the same charge, the electric fieldg 9fqh 5elw+,a (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden i; .btm*ac3n6 ssuj7wtable in a region where a uniform electric field is directed straight mwntbs;7*csau3j i 6. upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equili tw5lo+d2 2rombrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sphere that is.ythv498i y7 eh p.bph1 v-acu grounded. As compared to the case without the hollow sphere, the electric field at a point direpue4av 91ch hyivp.ybh.-t7 8ctly above the hollow sphere has

State three propertie azx2u*f )3 m adtz*q-yv.xhh*s of conductors in static equilibrium.

State Gauss's law.

  The charge carried by one e1wg25 iy*ifwfdr b7f*lectron 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. 25r ladrs b15w How many more protons than elect br 5aw1rd52slrons does this piece of plastic have?

  What is the charge on 1 kg of pr-1ysv*wfcw:d3htl9 2kb . 1 prsn+n uqotons?

  An atomic nucleus has a charge c;i, hbefyehs352gq 9 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/*k pl vdp(*xd x+gw uz3m7xa4 mC, respectively. What is the magnitude of the elecduxpml4 x 3/+wapgvdxzk**7(tric force between them?

  A 1.0-C charge is 15 m from a second charge, and the rtzqd .eegje19on3 ;cj.kmdh ;q2+/kforce between them is 1.0 N. What ise eqcgkt oh1d.j 2zdmr;e;3j/ q+n.9k the magnitude of the second charge?

  Two 1.0-C charges have a force between thqdkt,(/ 4v ut+jv fh5zs2hcr 4em of 1.0 N. How far apart are they?

  The force between a 9/ 3 as0qli )sr ircutfx/2)ap$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, expehay4sza-eo 6g: 7 7lkzrience a 1.0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwehe7ky74z 6:lazo-sag en them?

  Three identical point charges of 2.0 mC av m.3yi3 jt9aure placed on the x-axis. The first charge is at the origin, the second to the right at x = 50 cm, and thejyim tu39.v3a 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 x-axis. A charge of +2.0 mC is placed at+pg,p 7tz9ih4y t,exv the origin, -2.0 m C tg,ty7p9i +p ,hzte4 vxo 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 the follow)3ai1c ,s (hpmykds :*5n6u2hvjf fo fing positions: Q1 = 2.00 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 of the force on thepfuf)*f vdj6: 5csshmkai n21hy(3 o, 3.00-mC charge?

  A point charge of +Q ifxo y: 9)bp -unazn/4( qbx0kws 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 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 9byqx4/o: ()uk 0x zfannb p-wcorner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 na7u/- bck - 0r6ztu2:ox 7.ecofwipwh +i ge8iC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the n0hrp xizt e6wk/2i- 8 fuogc+7u i:o -.ecbaw7et force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0c/2 .rbz( : qmd g7epuke0j3pu); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, e2u (:3um7 re.0pbqk pzc/gdj 0). What is the direction of the net force on the 5.0 nC charge?

  Three identical charge6+chnl5u eza :s of 3.0 mC are placed at the vertices of an equilateral triauaez lc6n5+h:ngle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q aiwfhiw5 e y2h/+0sz)l5yc9 jlnd +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 the electrostatic force a9eyh)zc0 lywjf5w il/hi2s5 + cting on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C chal3yfs7m(k( .1r zqt vdrm)qd4rge is at x = 4.0 m. Where on the x-axis can a third charge be placed so the net force on it is zerovl)13qmt( r (dsmq4rfky d7 z.?

  Charge +2q is placed at the origin and charge -q /q nqhl3pdt+ v)h9m n:is placed at x = 2a. Where can hqh9+qv) dn3: pltnm/ a third positive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A tote ec*2r4 g6 v+j12pixag( tadnal 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 thfu:q:g4 )fyae xs h;1suk11g.bos, ube attraction of a fixed proton some distance above it. How far above the electron is1 seqs s)gkuu1 .f:h;b4g, :xfyau1ob the proton?

  Two 0.20-g metal spheres areb 9ks3 3twb8ed hung from a common point by nonconducting threads which are 30 cm long. 3e8 d9tskbwb3 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 chxo*83pxbjt p:n3 sn1o arge of +40e. What is the magnitude of the electric field at a dis1j3oxt n:*x3pns o8pbtance of 1.0 m from the nucleus?

  What are the magnitude and direct.afkoof 5oem:x f ua2/ja+ 95pion of the electric field at a distance of 1.50 m from a 50.m/2jf:eaak+ 5o xu.aof o5pf90-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitude of the 5* uanugk p *lhy2u6;kp zx6n+electric field at the location of the5u ;u*nn2 6 ky6* uk+xzpalphg test charge?

  A 5.0-C charge is 10 m from a small test charge. What is thfuwi85g0rq ywh9 + pw(e direction of the electrip h(wu 9g80+ wri5fwyqc field?

  A 5.0-C charge is 10 m from a small test chargedqc. 8kpki 1d8b(uv/u . What is the magnitude of the force experienced by a 1.0 nC charge placed at the lop.1bdq ku c(dk/8ui8v cation of the test charge?

  Two point charges each have a value of 3.0rvt bs4rxh*7 x 6,:lyuc eeq:2 C and are separated by a distance of 4.0 m. Whar:b*,7e x l:u6rhecsv 42txy qt is the electric 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 andt-60wb: pf8 x.p cpgyd a -4.0 mC charge is -8pxcbpgfyw p.t:d06placed at the 50 cm mark. 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 stic1elyeo a ql:/2k and a -4.0 mC charge is placed at the 50 cm mark. At what point q:aele/oly 12 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 and x = 0.20 m. 5r *qbb i,fs9oWhat is the magnitude of the electric field at the fr,5*iq bos9 bpoint midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 m. Thexmw0q69btze j-h k:w / last corner is occupied by a -3.0 mC charge. Find the elect :/hz9bjmw 0qk6 txwe-ric field at the center of the square.

  Consider a square which is 1.0 m on a side. C dz;lf9i 0qqj./l8shiharges 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);i.f j z0ild/q;h9s l8q -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 ofvsb bqmipd0q/8 c, g+9 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric fie/v ,b0di9q cg+mspq8b ld?

  A particle with a charge of 4.0 mC has 3+nb lp/e)z dla 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 0.1202; iaa 6;lk vma)aq15qtoolo0 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed onavq o15m6 0 ot 2)ioq;al;alka the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is pd;zw5aedpv p;r11 3oxlaced inside a unpo dd1e; a;3vzpwx51r iform 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 carrie vj;j8dg7msa2 yb9i .ms a charge of +2.0 mC. What is the magnitude of the electmaisg9dj v8bjmy7.2; ric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0d4+s r3vk 2 rdav,l vdu4hs*u, mC. What is the electric field 6.0 cr d v *r4uv24hadv s,ul,+ksd3m from the center of the sphere?