State the law of conservation of elechupc:5n z0ll 0tric charge.

  Is it possible for two negative charges to a26pv63ap7vqkkj ,;obikrp4 sttract each other?

  Is it possible for a positive an/l3zs(mp3o y/a gfs j8d a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. Durin1e(v2 z32 vm5xmfipc ug the process the glass rod acquires a pui xv1f2vm zc53me2(positive charge and the silk

  A proton carries a

  The model of the ato4o8cuer )n3x:uc 4e)gj+s syhm shows a

  A neutral atom alwaysvoqdg9b+91lm ff/*jk(c+g z g has

  An atom has more electrons than protons. The atom qp5c rbewt. d)+m a8fp;am7dy,e .+kais

  Materials in which the electrons are bound gxn cogno(z4k;) (ium4/al i5 very tightly to the nuclei are referred to a(4a izgxok)5ncugm;o 4i nl/ (s

  Materials in which the electron(v38k 7xfy myas are bound very loosely to the nuclei and can move about fy ky(3ax m8vf7reely within the material are referred to as

  A negatively charged rod is brought near one ennc l *g d3lz9c*ue3xv,d of an uncharged metal bar. The end of the metal bar farthest from the charc 3edvn x,3 *l*glucz9ged rod will be charged

  Sphere A carries a net positihawg.sq fk4n:y s74h5t3 p(lm ve 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 correc .5ga:h7( h4wnltk f4sqy3s mpt?

  How can a negatively chas 9h)oup2 9v inmz,kll *7dh;vrged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched wgome (d1ac 8h,ith a positively charged glass rod. The electroscomea(ohd 81,g cpe

  An originally neutral electroscope is grounded briefly while a positivela1t prlc6h 2(cy charged glash6c1lr tca(p 2s rod is held near it. After the glass rod is removed, the electroscope

  A positive object tou,a6pwydq 9:cc ches a neutral electroscope, and the leaves separate. Then a negative object is brought near the electroscope, but does not touch it. What happens to the leaves?q ccwd:a 9yp6,

  A large negatively charged object is placed on5n mrnr- .z,0jxj mq3e 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 path followed by the first ball, strikes m-rn nx,5e0jz3 rq.jmthe 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 th35(mrr8ab eyhd 3wgtns1oy69 e Coulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated 5vmzn1jrimu og- b i /96w+up69wtc0uby a distance d. The first charge is larger in magnitude than the second char66c+uumg0 tuv-15n99ow/mb riz wjpige.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e byn n3de89fu-wiyt9 9ach other on an insulated table. Which statement best describes the electrostatic force betweeednf wb939un y-9iyt8n them?

  Two charged objects attract each other with a certain force. If the charges 1 k p1,y*crqle nl5n(-yc zru;on both objects are doubled with no change in separat* u,5 ;nkc(-lc1n1yq lrzeyprion, the force between them

  Two charges are separated by a distance d and emzq5.bm+ovny.gf 1+t xert mutual attractive forces of F on each other. If the charges are sepa.ngb fm51zm ovy++qt. rated by a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to geq;3xb7yr ;znbz0k87 m zr6berv *i: the force between them if one charge is doubled, the other charge is tripled, and the separation distance between their centers is redukrbbnz 3 *ix:;zm0b gezeyrq78v7 ;6r ced 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 qfl2o:y w+fgu3qq m5.xf(c ,f happens to the magnitudocq (2w5xfq:f 3,l.ffm +qyu ge of the force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distax+ dq9g0czvgj*bd./. f fm*;x ilxe*lnce of 1.0 m. What happens to the magnitude of the force on the first electron if a second electron is placed nexc** ;ddj.zm ixq/fxexg*.bl+lfg v90t to the proton?

  An electron and a proton are separated by a di.us+ 7w1 va1 w jubji8xisy(h- ) s55loyhk-rustance of 1.0 m. What happens to the size of the force oh.j)1usiuj( ws -olvhy8yb7wk r 5x5-is1 u+an the proton if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is vpt)11.jugvk0aeu j, placed at the 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 corvujg0 v,1.k 1eau pj)tners 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 triv.sfz-k(v mm8+t r +vz6dnou.-c6 xdqangle. 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 znm+c+ d6 kvz-6o.vmf quxt(.r-vd8son the center charge due to a third charge of +Q placed at one of the other vertices?

  Which of the following :6 5zh2u4wn jxohp -jkis not a vector?

  At twice the distance from a point charge, the strength of the electric fie cowd,ob9i )5(ljiy 0qld

  Is it possible to have a zero elec; reuv-dlx *8dtric field value between a negative and positive cha;e-dr d*lxvu8rge along the line joining the two charges?

  Is it possible to have a zero electric field value between two posrgk q15k,c b.,7nj4 t 8nhslewitive charges along the line joining the two chb8l ,c gjnqn4kkrs1e7,5.hw targes?

  Electric field lines ;n wjnu9n l* -qnt5f9ml+kn)5v-lqe anear psitive point charges

  The electric field sho9yb3i*vzsvp 3 wn

  Can electric field lines intersect in free spacecv fms7aus :5 (ec 5ae5gdpan9a2,3xe?

  A solid block of metal in electrobhha45itb17)6 vzlm6x 1tt n .kwg982kx ehmistatic equilibrium is placed in a uniform electric field. Give a statement conmz hkw162l6tiah )bhx vitxgkb4 .79mtn1e85 cerning the electric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameter)zsgoff+/od;bm./e fs are each given the same charge, the electric field (E) m/d bg )zfsfo;/+ ofm.eidway between the center and the surface is

  A cubic block of aluminum resa1sk, q)h r:kxlhjg +;ts on a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning the charge on the blag,k ;h:1jrk) q+xslhock's top surface?

  If a conductor is in electrostatic equilibrium near an electric charx+x ,te,pl8 ynd dxo+6-lh4hb ge

  A positive point charge i y)38p:x)doqz ofz tq;b* 2cwhj4vd-m s enclosed in a hollow metallic sphere that is grounded. As co3b4ty zd8dj*)coxf2mqvpq ; )- :h zwompared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducc4kxl ik )u-fjt 6wpy/mne,+jm +w37vtors in static equilibrium.

State Gauss's law.

  The charge carried by one electronvhkw8298f ox 7g it8wc 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. How many mb6 lh byr) b*v7jpoq6.ore protons than electrons does this piec7r q*v6hb j6 yobb.lp)e of plastic have?

  What is the charge ont*ft *xmek 5*e 1 kg of protons?

  An atomic nucleus has a charge e3nwt x3dz. l)of $+40e$. An electron is $10^{-9} \; m$ from the nucleus. What is the force on the electron?

  Two point charges, s/dn w .b8;6m, fjybpdlqc13s ueparated by 1.5 cm, have charge values of 2.0 and -4.0 mC, r/nj;qwfm6sb 1 bdc 3,u.lp8d yespectively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a secoz g(bs(,ozm3gnd charge, and the force between them is 1.0 N.os( zz,gg3b(m 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 theh2:t4i tln3i yl34x.qnw eowdo+a/6vy?

  The force between a 7mp4,khlz.wk7/oz g*.urri b $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, experience a 1.d;8;f(ldrz p9aoe 3y i0-N force. If they are moved to a new separation of 8.0 cm, what is the electric force betwee; 3fryzi;p d(ad l8eo9n them?

  Three identical point charges of 2.0 mC are px1f zyu vsr uo1.7,t5tlaced 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 mark. Whrt vyxuf,t z5us171.o at 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 ;7ae;jlg / 8uii.*n. ee pvubuis 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 eleca 8;uip/ ej.eb.g7i *v;elunutrostatic force which acts on the charge at the origin?

  Three point charges are located at the following dy: mlg2sirnt2a1 )rs57 je- cpositions: 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 for 25 cr2d-sl:ij1m7egar)ynst ce on the 3.00-mC charge?

  A point charge of +Q is placed at the center o phs7,wi mj tb 0y*cvf w.,of2k(ix2*rf a square, and a second point charge of -Q is placed at the upper-left corner. It is observed that an electrostatic forcepmw,2k v*co rjff ib7tyxi. ,*s(w 0h2 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 corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Qp,+3,o-nuezl 4xbq8bq hzz)n ght(*f2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). Wha,qhx* ,)noftnb +p8 zuqlze(b hg 43-zt is 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.cm y-7 t)4 ,gpbygjo*z10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of *g,4) o7 gb-cmypjyztthe net force on the 5.0 nC charge?

  Three identical charges of 3.0 lr uhy5(:umc0 mC are placed at the vertices of an equilateral triangle whi5r0u (uhm yc:lch 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 and +4Q, which are separated by skh+ h--v nwu*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 a+kn-h *-uwhvs cting 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. f f9p7u+py8 zkWhere on the x-axis can a third charge be plapfk7fz+8p9 yuced so the net force on it is zero?

  Charge +2q is placed at the origin aabfza o4zn/am1 (o 36knd charge -q is placed at x = 2a. Where can a third positive charge +q be placed so that the force onaa6 4kn z(mf3/boo1az it is zero?

  A copper penny has a mass of 3.0 g. A total xj y+8 .5nbyeaof $4.0 \times 10^{12} \; electrons$ 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 at4jmly0tz/m u 5traction of a fixed proton some distance above it. tymm juzl0/54How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a combqrpyw / apkx82+jio;r )u,/ gmon point by nonconducting threads which are 30 cm long. Both apw2; qryipj)x 8rko,/+uagb /re 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 charge of +40e. Wh49s2t.3wrdd,ord li mat is the magnitude of the electric field at a distance of 1.0 2rltodims3 d9,rw4d .m from the nucleus?

  What are the magnitude and direction of the electric field at aatpzr3a dao huxac ;5 dk7szms* 7(79; distance of 1.50 m from a 50.0za(kst5amsdx* 9;a 3z77 7r;oduaphc-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnitudc(/ bxh(mu jr5e of the electric field at the h /(rbx j(ucm5location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the -g2(mw8 bycxau/n 0 tyelectric fieb 0auyxwygnc2/(t m-8 ld?

  A 5.0-C charge is 10 m from a small test charge. What is the magnituk xcud/ytfl27l;7:(q + dqsmfde of the force experienced by a 1.0 nC charge placed at the location of the tef7 :uc/qfqmxl 2 d+y7(dlsk;t st charge?

  Two point charges each havee1x( wr;,qaeceb w0* u a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway betwee1 xurwe0w*e,e(;qcabn the two charges?

  A 5.0-mC charge is placed at the 0 cm maj,w4cx:g djg t3m+5df rk of a meter stick and a -4.0 mC charge isjf wgtx,5dc3 4+d:mg j placed 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 alz,pu82 1gtxq6 8ldaond a -4.0 mC charge is placed at the 50 cm mark. At what point on a linedg2a lquolp,t18 z x68 joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -yjrd9moopy*)1 m 7nn id;9gw27.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midwaymwmyd dn 97)j 9og2on1pry*i; between them?

  Three 3.0 mC charges are at the three c,5jw)imivf,g:n9 og jmcls,dc. 3)tp orners of a square of side 0.50 m. The last corner is occupied by a - dml)iovs:t,53p wcj,mgn,g9f c j.)i3.0 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 at t) mojch4 q)b)mhe 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 field)mb4 oq) cm)hj at the square's center?

  A force of 10 N acts on a charge of 5.0 mC when it is pl ici)c+gmtz3g4puo38 aced in a uniform electric field. What is the magim+)g ztp cu83g4o3icnitude of this electric field?

  A particle with a charger6 y:rkrcg3t 6 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 mass 0.120 g is placed in a8vkemp84g7( qs21 kciwr, o hon electric field of 6000 N/C pointing downward. What charge must be placed on the bavm 2 o1,se 7c48rqwipk k(g8holl for it to be suspended?

  A foam ball of mass 0.150 g calpnc:. u a.a/opcd.8trries a charge of -2.00 nC. The ball is placed inside a uniform electric field, and is suspended against the force of grlop pun/.dc :8aat .c.avity. What are the magnitude and direction of the electric field?

  A metal sphere of radius 10 cm cxf,u n/ )sthv /pjb-(karries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the spvu(n x,sfj/kt/-)b phhere's surface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 mC. What is the el w;g0z:)ynq04qxx 7mz. 6ufbykkh hil( .o(mcectric field 6.0 cm from the center of the spqhn kuhf(y(. ;:bi x7 ykg4o m06clmx)zzw.0 qhere?