State the law of conservation of eoy7mhfo4 i.x/,oy5j kt 4gh 4slectric charge.

  Is it possible for two negative charges to attract each othe/ z5sqibe gjwgz6;1o/r?

  Is it possible for a positive an0vy/ ks :iq8g9aqws,ud a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rod a 5xx eqg y,wv:mka* cj h(3/wvnc,g7m+cquires a positive chamvvy:x5+ exg/hg7jmca* w( , q 3,nwckrge and the silk

  A proton carries a

  The model of the atom shows aa lo.6m5 .lz4 mlg-gch j70sdx

  A neutral atom always +b1g+ li:cyohi,w 8vwf:/ ird has

  An atom has more electrons than prmezsh6 d t7wm jlfh6 5x4.46cmotons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei aph /zk(/5jilc w8wbss2sc/j 7re referri jbshj 7 l ccw8/szk/(p2ws5/ed to as

  Materials in which the electrons are bound very loosely t51j;x h+tj5ak pv( ljfe ;+kaco the nuclei and can move afel5vkj5j( pcx; ha;kt++ ja1bout freely within the material are referred to as

  A negatively charged rod is brought near one nsxaw/zq. +jy01 +plovqile / *f4w.d end of an uncharged metal bar. The end of the metal bar elvq f+a4wnq.o/s.d/ip1+ x y* jz l0wfarthest from the charged rod will be charged

  Sphere A carries a net positive char s.-wk3 ehfy*)nm.hj2f;x zirge, and sphere B is neutral. They are placed near each other on an insulated -23 yfkwj*. hzifme.rh;xsn)table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged x5i-vs yw 73hj(- h,pjc ap(scrod charge an electroscope positively?

  An originally neutral electroscope is brie(1 s(wpkj (ree:udof1fly touched with a positively charged gdk 1 (o1pwseej(ru(f:lass rod. The electroscope

  An originally neutral electroscope is grounded briefly while a posi*w0k2 k8em whdtively charged glass rod is held near imkekw w82*0d ht. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the : wgv.-e3u5z/ etctxoleaves separate. Then a negativgu/-:cotv.wetxe 3z5 e object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an insulaamon;x6/lje8- kv7 m mted 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 d-mx 67avm;lkone /mj8oes 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 Cou hig+r /qu+*ak/j fu -kxe0ab:lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first charge is jaiqx;,9 mhdz.e5( nj larger in magnitude ;n(ad9xm5jz i hj,q .ethan the second charge.

  Sphere A carries a net charge and sphere B is;uhq rv,fc-e0 neutral. They are placed near each other on an insulated table. Which statement best deqc0rf;ehu ,v -scribes the electrostatic force between them?

  Two charged objects attract each other with a certain force. tc 2 y8vuoxd:g: t7;rc94y ere If the charges on both objects are doubled with no change in separation, the force between them rv ;c2tt4 rcyg78 :eo9duxe:y

  Two charges are separated by a distancbbnfe..u7co-c du2- h ehe.f (e d and exert mutual attractive forces of F on each other. If thh(u-fb ..unod e-fb2 .ecce7 he 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. What hapwv( ytnihu8b:74d*uki *w;j cpens 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? Thvii c4jhw d( :;u* yuktnw*87be force is now equal to

  An electron and a proton are separated by a distance owj wnu*6 x 7a8azw76qo)b nx+o5 f3llof 1.0 m. What happens to the magnitude of the force on the pww6 )a6 laxu*3 qxno ojwl+f5b7z 8no7roton if a second electron is placed next to the first electron?

  An electron and a proton adw3u icpr::vrg7a -.qre separated by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if::iq3 wu. v- rgpcd7ra a second electron is placed next to the proton?

  An electron and a proton are separat3 t i90oodxgtqua8v lkk+,o5 +ed by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is move q xotvl5o ,kka0u8og9d++ti3 d 0.50 m closer to the proton?

  A point charge of +Q is placed at the center f.rs v2yxb.hgiqp9: (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 thhfpby:(r2.i qvx g9s.e 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 equilateral trz l2 5)6whbcq-:y/i-y ofmzhiiangle. 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 thmy:cz -yfho-26wi)qiz / lbh5 e center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the followi*t /opmpt/ gk9ng is not a vector?

  At twice the distance f;f, llmw5cj9from a point charge, the strength of the electric field

  Is it possible to have a zero electric field vax ( tx7kv0ssa6lue between a negative and positive charge axsvsak7x60(t long the line joining the two charges?

  Is it possible to have a zero electric field value betweedop5w6/iz-g dbex1, 9.efpypn two positive charges alo.e,pzgdo y pd 6w91p-5eb/ifx ng the line joining the two charges?

  Electric field lines near psitive point charges.aeamk*5 zj2c,5gyrn *dvhf,c /ao0i

  The electric field shownze7 (g7 fblv px+rthz79d,1guk6 1hln

  Can electric field lin gam (fz( 9o6vcn9n*poes intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed iki1 4n 5kq1:kbjd5yubzja. mr,, - tegn a uniform electric field. Give a statement concerning the electric field in the block'dkk. ekiu j5 b ynzg1bq,51 r,a-4:mjts interior.

  If a solid metal sphere and 0jldk:f,j:tju.j- 51cqqueza hollow metal sphere of equal diameters are each given the same charge, thu j ktj1:,l eqqcjz.0df u5j-:e electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region whvgxn3;uw ie pff:e63(ere a uniform electric field is directed strif ;eewu3gp v:n(x3f6aight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an; df rm kuw)t.81qf)e(4 gwfwv electric charge

  A positive point charge is enclosed in a hollow metallic sphere that 6u5t: esl96 *dhmw aghis grounded. As compared to the case without the hollow sphere, the electricu65wd*e:9a h 6stgmlh field at a point directly above the hollow sphere has

State three properties of conductors in static equilimt),kv euo:0y 3rap4rbrium.

State Gauss's law.

  The charge carried by one electron isa2oa: r03 aqri $e = -1.6 \times 10^{-19} \; C$. 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. How3cif:l2ccvev r48v9a 1muo0h many more protons than electrons does tlc v9 cc4ah8 1ivvu:0m3fe2r ohis piece of plastic have?

  What is the charge on -rjj,kt-pn v ;1 kg of protons?

  An atomic nucleus has a chargs66va) sftcj :e 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 mC, rrav,po x jnk*pyn7.r1 2x)g3bespectively. What is the magnitude of the electric foxg1 jk3o.*b,a r) npr2vny xp7rce between them?

  A 1.0-C charge is 15 m from a second charge, and the force betdr ;s.ws r9/k f/wwfw.*wiw+tween them is 1.0 N. Whawwr w//sr ftw.kw 9 .id+f*s;wt is the magnitude of the second charge?

  Two 1.0-C charges have a forceiz ka )9 r843ybyw5bm8sr r9unh(gr*z between them of 1.0 N. How far apart are they?

  The force between a awoe57;* k.)6n og gz2oqz mqm$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initial , q:rj:, wzze1hulh.cly 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,r 1:hluz: cejhq,wz. them?

  Three identical point charges of 2.0 mC are placed )j o ec;;pfod d h/q)g)88jirxon 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 10ce)hp8dojx)f)gj/ d8 oiq;r; 0 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 utujlcy)// : cis 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 the orc: uc /u)l/jytigin?

  Three point charges are locat(o9oe s*a4vg fch2aw *ed 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 = -1.00 m. What is the magnitude of the force on the 3.00-agoaf*w se oh *v924c(mC charge?

  A point charge of +Q is placed at the center j 4wg7ykf lyi.p:4k.dy9hk7d 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 p h9kg4 d7yld..wip4fk: jy7ky 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 is at (0, 0.10 m); Q3 = 5.0gbu4 , 7*5q raenewmu8h: sp-nt6p.bt nC is at (0, 0 p as58np6*ebr. tubnt4 u qge7,hm-:w). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2zumhzppa hv5(1,3 x)ez. kfw3 = -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 5.0 nC charge5w3mvf( .e ah,)1xzh3zzk p pu?

  Three identical charges of 3.0 mC are placed at the ve/*a1,a5vi5 qsxbpb ubrtices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the elecba b5/*x5suqap,iv 1btrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. A nax://bwj t) *lxh )sbq5zy7*pt npu;t what point, on a line between the y* q/xw*5 )hzsnpb/t:u;ntx jal)7 pbtwo 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 origirc hao3sq/h ,+o*vvt 1qnxo/2n and a +9.0-C charge is at x = 4.0 m. Where on a+nhohr o2v//tq 1 q3*cvox,sthe x-axis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and chargj j(h4dl+rgi o0y5h )ye -q is placed at x = 2a. Where can a third positive charge +q be placed 0yhd5gyio+ jj)h4l( rso that the force on it is zero?

  A copper penny has a mass of 3;ei5ffyuiubx(qvr,u.s .dzkdo 5h 6:pt 8+ ;n .0 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 the force of gravity by the attraction of ah1z kwrv( ()aj fixed proton some distance above it. How far above the electron is the proto( vw1j(h)kzarn?

  Two 0.20-g metal spheres are1q .k *yiza+5mes aj.w hung from a common point by nonconducting threads which are 30 cm long. Both are given identical charges, and the elec k5s w. ay+a*i1mezq.jtrostatic 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. What is the mag95zekw (ian)ecey2hsa l)6 0initude of the electric field at a dist)e6 9 )ianl5es ky zwie0hc(2aance of 1.0 m from the nucleus?

  What are the magnitude and direction of the eld7f;l)oc2 q rh tmo/5fr5ue2 eectric field at a distance of 1.50 m from a 50.0-nC c7lr o/5h 5r2eo tdeqfm uc2);fharge?

  A 5.0-C charge is 10 m from a small test chaib(pbxydf 6 -3 ael,z6rge. What is the magnitude of the electric field at the location of the tesbep 6db ,- 6(yafzli3xt charge?

  A 5.0-C charge is 10 m from a s- wgudq65*. fc l:hmormall test charge. What is the direction of the electriqr6:*h dlufmw. c- g5oc field?

  A 5.0-C charge is 10 m from a small test charge. What is the magnisu t/jma6,f cb gi g0)b1j97vktude of the force experienced by a 1.0 nC charge placed at the loc1t60 gjcuab, )isv7kfm gj/9bation of the test charge?

  Two point charges each have a value of 3.0 Cv d2;db aj5n5ut; pz9a8t l5,hz4v hnx and are separated by a distance of 4.0 m. What is the electric fp;2b,t tvn; 5l4xzzj d5nh daha u59v8ield at a point midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm*c9tu9mf5bc 9j:lp+m yhw2 i.2efdxs mark of a meter stick and a -4.0 mC charge is placed2y*e9c2hb:9wms + j dltp.mff9x uic5 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 stick and a -4.0 mC chargei.fo4iy+u1xeu m43xf is placed at the 50 cm mark. At what point o.o f 4e31miiux y+ufx4n a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are z/g v*6ustv k,i.yb.)q.tbs nplaced at x = 0 and x = 0.20 m. What is the magnitude of thbtg .uyzq,.ts.b sni k)v* /6ve electric field at the point midway between them?

  Three 3.0 mC chargesvz6v es8 qbh (z/+9zpt are at the three corners of a square of side 0.50 m. The last corner is occupit6+ zv(zs zehv/b8 p9qed 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. Charges are placed v6oh zfoc. 8;iat 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 mf.;h6 z o8coviC 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 :3enx 3i aclq6q crt5uqls71)5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric ec )q7qq3uti15racs :3l6xln field?

  A particle with a charge of 4.0 /zipl0g:ipv9yb.z v3mC 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 iy5 e2j.:rutezu lmk7 5s placed in an electric field of 6000 N/C pointing downward. What charge must be p uje5ertzm2:yu k5l7.laced on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The baa1 *-agsab,srll is placed inside a uniform electric field, andr*1-b ags,a sa 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 of +2.0 mC. What is the mag9p deg n,- ):36ognye wn0c0slegv+7-izph j fnitude of the electric field 5.0 cm from the sphere's s0 9ozwe,vdgnh 3s:jei-npc lg+e- n6) ypf7g0urface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mo* jgby mm 1p4q (ho 5lhl7(45epju-pdnsys,;C. What is the electric field 6.0 cmo *s m4,o7lj5p5gs(( p4 bj;dmlhhyyep n-u 1q from the center of the sphere?