State the law of conservation of electricysw .g.6n5lrx; awtc;wb +x6h charge.

  Is it possible for two negative charges to attract e3 ai+ u n2yr:gj.1dnrsach other?

  Is it possible for a positiv;elev99nnehg */nyz a-4vg n9e and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass rou-pp*c -+ jzq kec;zu:d acquires a positiv:j-*qpc- kez+up; uzce charge and the silk

  A proton carries a

  The model of the atom show8 g3sh:n.mt crs a

  A neutral atom alway ql i94hkoj 4b 1a6/0.vnii 5n,kyetjms has

  An atom has more eleckrfe3 xa:-b3dwio .1resj 6vr e ,uqi:; vh9y4trons than protons. The atom is

  Materials in which the electrons are bounvw,y4g4dzn jng r56gh)7 6tuzd very tightly to the nuclei are referred to,rn6vj 6 zdzn5ytug4wg )hg74 as

  Materials in which the electr t 6b 6 ;pk0b;th,.euda2dz+s ydzi*cvons are bound very loosely to the nuclei and can move abou6vi6;zbt s;pza d 2y dhk.,b 0tedu*+ct freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged metal bar. i4ou5c // uvbj The end of the metal bar farthest from the charged rod will be chargj4//ov5 bcuui ed

  Sphere A carries a net positive charge, and sphere Bo ,18wmv-flfev d);bblo32jy is neutral. They are placed near each other on an insulated table. Sp lw ,y1olvf;jv)-3 fbebdo8m 2here B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an 7e apk26j9twqsrgxh 06 c:s te* 9n,wwelectroscope positively?

  An originally neutral electroscope is briefly touched with a positivelya 5thog(qj cm /u*vc21 charged glass rod.t15 (h2ocg umv/*jc aq The electroscope

  An originally neutral electroscope is grounded briefly while a positive b- n*q)b-0lw/wox bzely charged glass rod is held near it. After the glass rod is removedo/-w -xqb bl wz)en*0b, the electroscope

  A positive object touches a neutral electroscope, ans ;7mxcht0 gofc 0d+63e af.bhd the leaves separate. Then a negative object is brought near the elec7d ha6b00cg.ftc+he;fsm 3o xtroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed on an u*wxtlb ql,v/.q)gi**lydf 6 insulated table. A neutral metallic ball rolls straight toward /*,b*qt gllx6qu wd.*vi) ylfthe 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 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 con7v6(h:6bffwffa 2beepy8z 4 fstant $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distance d. The first ch )hiu*gnr,w i-arge is larger in magnitude than the second cha ni,hrw*-)iug rge.

  Sphere A carries a net charge and sph285p/9* ek9 ax k9goezjhkg(owz rmb- ere B is neutral. They are placed near each other on an9r z*pk 8 og9o5(ehx zkka2bm-9jw/e g insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects a h4 +vx b2 )hc(zkvbhta8e;ag:k)y:xpttract each other with a certain force. If the charges on both objects (hk4 k)zapeg8a yv:;h) xx+chbtv :2b are doubled with no change in separation, the force between them

  Two charges are separated by a distance x(vdpa n uq921d and exert mutual attractive forces of F on each other. If the charges are separated by a distance of d/3, what are the new mutual for(2 axdu9v1 npqces?

  Two charged objects attract each oth+l n p1 s owc6(ko/s2zf.g/yxher with a force F. What happens to the force betk sh+21g.(ly6x/pw z /nfsoc oween 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? The force is now equal to

  An electron and a proton are sepl5* n;w8 :+jts7fchr ow; jbvzarated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electro87; w b:slhw; vtj+c jfn5or*zn is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What hahz95bg+pstduzn u, 4-ppens to the magnitude of the force on the first electron if a second electron isgu -4bhdnsz 9p+t5u,z placed next to the proton?

  An electron and a proton are semw9b e;a2/q2f 6oinf dparated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron/2; 92m difbqn6fwe oa is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center ofukr ,133x,;d haj2wwve k)vqwydi4+z a square. When a second point charge of -Q is placed at one of the square's corners, it is observed that an elec+4vd uhak3 3 q wwy,z,erxiwjk 2d)v1;trostatic 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 eq,hgl- ,nil +xiuilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N a lh+x in,gi-,lcts 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 vector?t*2htjo apl*x )c08g 31gcmu2vwl,bo

  At twice the distance from a point charge, the strengqpj 3/ zz,ic+dth of the electric field

  Is it possible to have a zero e70ry3ca rl u5ylectric field value between a negative and positi r3lc5yyu70r ave charge along the line joining the two charges?

  Is it possible to have a zerq v .yw+y3tlrs1kq98loa+i b: o electric field value between two positive charges all+by8. s3rlo+yqat9 qwi: k1 vong the line joining the two charges?

  Electric field lines near psitive iuhwugu( 4m l0i lwn3.yy/ -0kpoint charges

  The electric field showj5hv/ 0zj0qqo.u nfi, n

  Can electric field lg9wd6;sr9d1 mcqo 6 afines intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a uniform f 2 ,o0k,cecxyn*4yb melectr0 , *, ybe2cnycfxmko4ic field. Give a statement concerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diamete1 qvxrz/o,v 9a5fanu5rs are each given the same charge, the electric field (E) midway between the center and the surfaceu5a vaq1 ,x95zv/ fnro is

  A cubic block of aluminum rests on a wooden table in a region whcoc;tr+07x68 eucv txn28u itere a uniform electric field is directed straight upward. What can be said concc n;6 8tv uxtoui2x7c+8tc0 reerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrijfbh:czq 6 0c5um near an electric charge

  A positive point charge is em .8.jf.mnpvhdym x) m1ey/)tnclosed in a hollow metallic sphere that is grounded. As compared to thefj h y8m.1etymn. )dvxpm.m/) case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties d- hql9q:,5;lb:fv agdb )cgc* *q ujlof conductors in static equilibrium.

State Gauss's law.

  The charge carried by rk: ng :7d(nknz4vw2bone electron 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 yydk +yx1tz +h).h ,bamC. How many more protons than electrt1 hayh+d+k,xb) .yy zons does this piece of plastic have?

  What is the charge on 1 kg of protdppn:mmv )z: jwig,,fm wd(soa. e+ 99ons?

  An atomic nucleus has a charge k)1eh hoq* 3xxoaw hz7 g5zzf0p0/fg+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 .h-eln d6; ,yz5rlnxw.0 mC, respectively. What is the magnitude of the electri.;zhn-wl 6l r 5y,exndc force between them?

  A 1.0-C charge is 15 m from a secobj: 18lha/vhzx*7uxserw 1e8 nd charge, and the force between them is 1.0 N. Wh7bh1*r :x hzej lx8s/aev18wuat 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 thuib1)0tim eh*6v:mseey?

  The force between a pm, :* lcr wd:8y0ade 55,wjrxv/7dpl 5d uxls$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart,/w bbh*0plex, experience a 1.0-N force. If they are moved t0wbhe*/ ,lxbpo a new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges oc2h:pq0agq),i tbi z1f 2.0 mC are placed on the x-axis. The first charge is at t)0iicg,btqz21pq ah :he origin, the second to the right at x = 50 cm, 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 plawh0s/od4oug fvd. :( l3t d7riced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the rid hswo:rg.if3( v4tlod 7/u0dght 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 fcr 8v+8ff jzu2f(1dcyollowing positions: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 =fc(8c2vu81 r z j+ffyd -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 thevg+rzv kdh)y. /pd2z 4;rtjb/z6iok4k*n :r l 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. h ;kbpydr z+t2:n/ )*iv64vkl. /4r j zdorgkz 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 (05 m ets9k be15k1qs6ta.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What ie6ekb51sm1a t9q k5tss the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0nsqt y4a6pdg :4yn:8e nC is at (0, 0). What is the direction of the net 4dtqypega: n4:8ny6sforce on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert7 7jihk;; tv hba*xnk9m;*fhkices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any kxki* vt;j 7f*bha7 khh;;m9n one of the charges?

  Consider point charges of +Q and +4Q, whf/8yw f2)t (y;q2 9:g rroo2eolg esqnich are separated by 3.0 m. At what point, on a ly(/g2 :nqoeg; r eqlr 2)y9wsf2oto8fine 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 the origin and a +9.0-C charge is at x 2ja(fnp9o:opy 5sl+y kd+p - m= 4.0 m. Where on the x-axis can a third charge be pl+-(2mlaj9npd +y:syo5 k fppoaced so the net force on it is zero?

  Charge +2q is placed at the origi c/j77)pz a;zau*kx/ viq/nkbn and charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force on zpazv7c//*;/abqk i)k 7jnxuit is zero?

  A copper penny has a mass of 3.0 gaabeu. ,z2c8o(7v2lty:f i ee. 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 forcjw4f h0q0ozh 1e of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the prot o10jq0hw zfh4on?

  Two 0.20-g metal spheres are hung from a common point by nonconducting the1l by -/vob6/s3ybh0p* xj hzreads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forceshbeyl/hp* bj-sv b1 z3 yo6/x0 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 +40e7 fyu fo5 n*e.s1,wtdal:w+f( p rr2ep. What is the magnitude of the electric field at a distance of 1.02*1n+: affwledftru e .w5p,ry( op7s m from the nucleus?

  What are the magnitude and direction of the electric fielldm8 l-.sh w,fxwe-,pd at a distance of 1.50 m from a 50.0-nC charwfmped- lh-,. ,sl8xwge?

  A 5.0-C charge is 10 m from a small tho- qu2q9ol :rest charge. What is the magnitude of the electric field92q :u-h orolq at the location of the test charge?

  A 5.0-C charge is 10 m from a small test 6-:fbqfxw;*f qhut; xcharge. What is the direction of the electric fi b;x:t* xfuh;6 fq-fqweld?

  A 5.0-C charge is 10 m fromc-,mu/-qwu48z gos vv a small test charge. What is the magnitude of the force experience8v s-4mc ,zg uqu-vw/od 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 separated by a distanc w6o:kwd-5 nhie of 4.0 m. What is the electric field at a point midway bew-kn:56 hwdiotween the two charges?

  A 5.0-mC charge is placed at0bw0a mdlm:u 31f-k g o;av) nysk6j;x the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the electric field a sv koak003-;jw 1;daf)gly6m: m nuxbt the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a met6i9dxy)bb -cru*o ebnr qk+1, er stick and a -4.0 mC charge is plac1+*re d u6nrbyx,)ocbb9-kiqed at the 50 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 ajqsj+* y(av70r d )azm;pva3hnd x = 0.20 m. What is the magnitude of the q7z* yrd3 ahv;+a( sj 0jpm)vaelectric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of a square of side 0.50 mpz,- zj. c8v.ye2c)f fmv-gzs. The last corner is occupied by a -3.0 mC charge. Find the electric field at the center of the sqcf8czyefgz ,pv.svm 2j z-.-) uare.

  Consider a square which is 1.0 m on a side. Cha vfg4+f.qjvs 7rges 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); -3.0 mC at (0, 1). What is the magnitudev7g4 qjs .fvf+ of the electric field at the square's center?

  A force of 10 N acts on a charge of 5.0 7 bm-ecexz 6sra),i5qmC when it is placed in a uniform electric field. Wha,qrex 7e-6bm) z ca5sit is the magnitude of this electric field?

  A particle with a charge /u9 :3 x pzvv(lywxoh+ 6bfal)of 4.0 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 massc.wbx3b n/ cxi7ej r k-7dc,5f 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge muj/, bcccwi-eb d7x3xr7 n5fk.st 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.rha i2qe 54xgayv )d:x aar0vv )9f87ihu(dx* The ball is placed inside a uniform electric field, and is suspended against thvai27q*ivrgy)de5:80xaxa vfur (hx9) 4 ad he force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm carrw-invku+ /n2 lies a charge of +2.0 mC. What is the magnitude of thwvunik +n-l2/e electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charge u;h5n(n5egw z of 3.0 mC. What is the electric field g;u5h5e wzn( n6.0 cm from the center of the sphere?