State the law of coni/ l 5owp+/2avvei6n5gjzrtlr,9 +dp servation of electric charge.

  Is it possible for two negative charges to attract eum9 u f- h5:fjwr9q zuvw*)wm6anh)*ha mcv; :ach other?

  Is it possible for a positive and a negative charge to attract eap k g;-n6mn(c1myg0 udch other?

  A glass rod is rubbed 7 .m+j7qffizm u foxn;) p2mc5with a piece of silk. During the process the glass rod acquires a positive charge ai+2.zf nfm) xjpfo7 q7m mcu;5nd the silk

  A proton carries a

  The model of the ato ;+dq5u 2njr nm)lnso/m shows a

  A neutral atom always has2edhlzj 07vi ;

  An atom has more electrons thans).* yq9ffd )rpbi2w n5/ilhd protons. The atom is

  Materials in which the electrons are bound veijk*2m r9d7qc ry tightly to the nuclei are referredk*qdrj2 mc7i9 to as

  Materials in which the electrons are bound veryr(xpcu 1d 26zb *nv+j6 cxhh8g4-h k 5b)xztgb loosely to the nuclei and can move about freely within the material are referd+1xn-)ck6br5 px4z xbguh 2b(cgj*vz8h 6 th red to as

  A negatively charged rod is brought near one end of an unc wjtybl.w,5n,harged metal bar. The end of the metal bar farthest from the chbwt ,ylj,.5wn arged rod will be charged

  Sphere A carries a net pos,git va52/yv amj:oxt8))r qoitive 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 statemex2oayv vqg a),8rtt5i:ojm /)nt is correct?

  How can a negativelyk f p*0sr:h,qq charged rod charge an electroscope positively?

  An originally neutral electroscope is briefly touched with a positively c 4ylk003s xkgjharged glass rod. Tk0ljg340yk sxhe electroscope

  An originally neutral electroscope is grounded briefly while a positively ch7du o3x*k2 (fbfyw o6(o-ifi8rduxv/ arged glass rod is held near it. After the glass rod is remoy6o8koo7(dfb( f*rfx3- w 2ixvd /uuived, the electroscope

  A positive object touches a neutral electx:ea5 bue-m;uroscope, and the leaves separate. Then a negative object isu: xubm;e 5ea- brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed i9w; ltbqamy7ua j0+:nuj.6z on 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 the first ball, and stops. The f qnam0 lzi;ub :97w+jtju. y6airst 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 czagpfc0ljhw 7)d5mvzf )jt8q0/ 6 +s ionstant $k$, which appears in Coulomb's law?

  Two charged objects are sep 0e,2sgc :dmnl2-utv iarated by a distance d. The first charge is larger in magnitude than the second cha v tgc2:-du,ei mns2l0rge.

  Sphere A carries a net charge and sphere B is neutral. They are placed near e0filg g. 3qep+wth6o77u*cx2t+ppz,n iy7i vach other on an insulated table. Which statement best describes the electrostato ti7g2+z7+ycpfh, qi6ep x3tp*lg wv.0n u7iic force between them?

  Two charged objects attrac;smcktxn61w,oim *q 9t each other with a certain force. If the charges on bothsimnot6kc *1,xm;w q 9 objects are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert muthf,cemfqte 8; lb6 *-uual attractive forces of F on each otherf ,hemb quecft6* ;-l8. If the charges are separated by a distance of d/3, what are the new mutual forces?

  Two charged objects attrg uo;d3x9u air4gu: yc c7/y8ract each other with a force F. What happens 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 org;4a8goxu: cr7ur yic9 y ud/3iginal value? The force is now equal to

  An electron and a proton are separated by a distance of 1.0 m. -l ginyn,* slw.b4j2h *b*;gca 2 kaqjWhat happens to the magnitude of the force on the proton if a second nha.a,bj ;*-g4 2lwilb sk2*qgj yc*nelectron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0 m. What happenzp 1mrrcb;8 lc +oz3m4s to the magnitude of the force on the first electron if a second electron4c;81zm+3crml bz po r is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0b8l m.d31cyq)3 u hcim m. What happens to the size of the force on the proton if the electron is moved 0.50 m clos qmmi31l.3 dybuc)h8 cer to the proton?

  A point charge of +Q is placed at the center of a square. Whenu:ll,1r, cyiit l1v9m 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, i, ucyliirtl,v191:mldentical 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 ofjqal( 5c/an1i 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 on the center charge due to a third charge of +Q pla5 ija l(ncq1/aced at one of the other vertices?

  Which of the following is not a v1*)wf vgk oqr*ector?

  At twice the distance froc 8lwl8*f1 mvf zm:qaj;1wr xf-p)q(qm a point charge, the strength of the electric field

  Is it possible to have a zero electric kbvt xuh0 2/;dbise89field value between a negative and positive charge along the line joinin890dx b sve u2t;bhki/g the two charges?

  Is it possible to have a zero electric field value between qtmc ud,3a86 btwo positive charges along the line joining the ttcaqm8b36, duwo charges?

  Electric field lines near psitivs89xmuf a;1t-; jzc*7wiq ov ue point charges

  The electric field sijx-hj;l( ks2 hown

  Can electric field lines inte-)vzam;qc3tn zk ;k,3j xts4krsect in free space?

  A solid block of metal i51ovz3hh n 9 v sg1jxcw7+.ebnn electrostatic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field hb9 g5hc e7svvwon31.xjn z +1in the block's interior.

  If a solid metal sphere and a hollonv msyqi-( vn4x()5vew metal sphere of equal diameters are each given the same charxv n-) (5q(esn ym4vvige, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rest p-ft 6jct/ob*s on a wooden table in a region where a uniform electric field is directed st/btf* 6cj -ptoraight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium neatkp k*x c*tv589lax(z r an electric charge

  A positive point charge is en6jd0b-lkve8ch y9jq-3zgu - hk .v ))gxi2atjclosed in a hollow metallic sphere that is grounded. As compared to the case without the hollow sphere, the electric field at a point directly above the hollow j)e.dxg q tz-a39jkvkbi )j6h80-yvgl-uc h 2sphere has

State three properties of conductor,zpu+df+u vuy9k 5n e3s in static equilibrium.

State Gauss's law.

  The charge carried by one electron is 01:zk ky8l ki1x/ mxed$e = -1.6 \times 10^{-19} \; C$. The number of electrons necessary to produce a charge of $-1.0 \; C$ is

  A piece of plastic has+xj5xqiej5,kf+7 3wl:ht wn0 zyo7ze0ch 0lt a net charge of +2.00 mC. How many more protons than electrons does thi00ij7fxk tye+th+ lhc5 ww,x nzl5 o :zq37j0es piece of plastic have?

  What is the charge on8sf* kqeaz7oiutj3 +4 1 kg of protons?

  An atomic nucleus has -r8 n e/glktbev 8xl(q.d ;d0k rprs7+a 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, mx3mx n*nd. k(have charge values of 2.0 and -4.0 mC, respectively. What is the mxm n.ndk(m3x*agnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them in ltx8 41 9poxz,gki1us 1.0 N. What is the magnitude of the second charge?txngkzp91u l8o,4 ix1

  Two 1.0-C charges have a force between them of 1.0 N. How f4(pug1:e,xlmd qz h g.ar apart are they?

  The force between a 0+5(cnxmm mqw $30 \; mC$ 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 1.0-N force. .st 0k- gd ykj6eiy.ou /cop() If they are moved to a new separation of 8.0 cm, whayg/e.o)c- k(d iup.6y s ktj0ot is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The fi0d,gx r2;stz3 )fgmq irst charge is at the 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 wzdg)32;s0 fgqmtxri ,hich acts on the charge at the origin?

  Three point charges are placed on the x-axis. A charge of +2.0 mct3gnqc t2/bu0d4mq )C is placed at the ocg/2mqdc0bn4t q ) 3turigin, -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 origin?

  Three point charges are located at the follxv) m7i e1e:gtowing 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-mC ch x7:)vee mi1gtarge?

  A point charge of +Q is placed at the center of a square, and a:lzum:w( 2rqdd 0+ks t 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 2w:drts qu (+:l0dkzm 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 = 5.0 nC i +awknv;t;9 9qliknr8 s at (0, vwlin t;n+ 9r9 qkk;a80). What is the magnitude of the net force on the 5.0 nC charge?

  Q1 = 6.0 nC is at (0 6o7s6y4ypykmasl6 +u.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What isyosm+7y6kpa l6 u 46sy the direction of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vertices of an eqf l6-nzy.l 5sduilateral triangle which measures 30 cm on a side. What is the.fyl 6zs5d -ln magnitude of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Q and +4Q, whiz, 5wwo, vfje /a6fjp:ch 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 acting on it would b/pj 5,eoafjvw6: fzw, e zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 m. Whpwrc7q 8it 9-; gv4cqoilquof)-15xrere on the x--7ogw 5 9 ;48orciirvfu1pxqq-lcq)taxis can a third charge be placed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a. Wheresa8vo6u13w7df ( nkcp can a third c(a1s86pn3v7uo fwk dpositive charge +q be placed so that the force on it is zero?

  A copper penny has a mass of 3n3g. ,6ihrmob.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 attrace 056fe p1c3v ud9fawstion of a fixed protoe1 cedu5f 3a6fvw9s 0pn some distance above it. How far above the electron is the proton?

  Two 0.20-g metal spherty9q,ee/x6:v e ;c 1rdp nec2yes are hung from a common point by nonconducting threads which are 30 cm long. Both are yy,te2 6x; /qc9e:neec drv 1pgiven 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. Whaap6q (1qro eval,.k v4t is the magnitude of the electric field at a distance of 1.0 m fro46ovqr( v.ae p,a lq1km the nucleus?

  What are the magnitude and direction of the electric field at a distancegxqc+ t,p g-(p of 1.50 m from a 50.0-nC charge,qt(p-g g cpx+?

  A 5.0-C charge is 10 m from a small test charge. What is the magnya5ics./j5v ( pw5m;1 l kcnr5d9su lsitude of the electric psr.s ;i 1d5m9/nc 5lv (kacu55s ylwjfield at the location of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is tz8wv5u/ bf,j)ck vfxp h-c 4f1he direction of the electric fiek5 f,jcb)zp4/ u81v- hcvxffwld?

  A 5.0-C charge is 10 m from a small test charge. What md xyv+f o74-p+i fcn)is the magnitude of the force experienced by a 1.0 nC charge 7xdc y+f)fp+ i v-m4onplaced at the location of the test charge?

  Two point charges each have a value of 3.0 C and are separated by a dismej 7tazn7 scw5;,l 7ytance of 4.0 m. What is the electric field at a point midway between the7zaj5; nwlm77,ctsey two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a mo3-ofukk2 wyp,4(tis eter stick and a -4.0 mC charge is placed at the 50 cm mark. k3pf 4owso-2t u,(ki yWhat is the electric field at the 30 cm mark?

  A 5.0-mC charge is placednx5cm( *x.tn l.p ui6c at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what px.tnn 5c*plmi xu6(.c oint on a line joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are nti9-t)wf7f6 w:vn l;wva-k giz g0*p placed at x = 0 and x = 0.20 m. Whakn6 tz p7g9 -gv)it;w0-*wiflvn: fwat is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are atwyt;vcll2ammcy *6d)f +w() t the three corners of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at the+;a*62wvftw y) ctll cy(d)mm center of the square.

  Consider a square which is 1.0 m on a side. Charges are jou c k(r(;jgx,bs55db6h ok1placed at the corners of the square as follows: +4.0 mC at (0, 0); +4.0 mC at (1,( rj sk1o(o,k h b5xbcdg65j;u 1); +3.0 mC at (1, 0); -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 7tp vfbs5f-;sv; (k9g n z4met*bko0a+w3tj eof 5.0 mC when it is placed in a uniform electric field. What is the magnitude of thk5(-; 0of fsn94bkvp+a* te7z vt gt;bej3wms is electric field?

  A particle with a charge of 4.0+zh. v w-w u7vdu(u,xu 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 grnw kj,q:97 tx is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on the ball for it to be susp 9qnj rk:7w,xtended?

  A foam ball of mass 0.150 g carries a charge of -2.00 nC. The ball is p: a4vhraus i -(ub)n4(jdlv:ulaced inside a uniform electric field, and is suspended against the force of gravity. Whau:ijas -ra4n lb: (u)d4v huv(t 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 theme6 .vnj/ 6 df:tjh1ch magnitude of the mtv 6h d.hfc:n6ej1j/electric field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries a charsgxza e-oi.ff31)2br -h fl6e ge of 3.0 mC. What is the electric field 6.0 cm from the center of the sphhee f- sf2) l.1rz3-fxi6 gboaere?