State the law of conservation 5ott61 mlg4;qk/s zggof electric charge.

  Is it possible for two negative charges to ato1 n4*1eej) lhejpe7ytract each other?

  Is it possible for a positive and a negative charge to acb1i5 y m dx3.xicv aq0o86o 7a81izzfttract each other?

  A glass rod is rubbed witmk3yx;m 86swah a piece of silk. During the process the glass rod acquires a positive caxms6w3;m8 y kharge and the silk

  A proton carries a

  The model of the atom shw sjrcnp5,qg e+j0n.n ubr-0cy* cy*z 8:5wtaows a

  A neutral atom alwaysz 0vfk:m); mhc so1d.a has

  An atom has more electrons than protons. The atom ixr:df. 9ns5nus

  Materials in which the electrons are bound very tightly to the nuclei are ekeu62yj ysk a5 6,wv*referred to *ee6y 6 k2svwy ua5,jkas

  Materials in which the electrons are bound very looselyur(7u2ozt n-lmnh 6 oxo3w),w kwe0p,y4em8b to the nuclei and can move about freely within the matez yl)87,6ok o u(m obp2 mwn04uewnth3we ,rx-rial are referred to as

  A negatively charged rod is brought near 0xggb0 gp w9oqdt;e+ 4one end of an uncharged metal bar. The end gtq4o+wg0epbg09; x d of the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and sphere B is neutral. They are pl(ld4g(u -elhy aced near each other on an insulated table. Sphere B is briefly dll( h ey(4ug-touched with a wire that is grounded. Which statement is correct?

  How can a negatively cztu (koo0 qlbe; h+a6/harged rod charge an electroscope positively?

  An originally neutral electroscope is br0 z ld 6-3i1t9hfvldxuiefly touched with a positively charged glass rd-1hxz390id 6 fllutvod. The electroscope

  An originally neutral electroscope is grounded briefly while a positiv ;hlaws,8zjyv, um 07t6ez 5nhely charged glass rod isl ;yeha 8uns0 7,65vwmht jz,z held near it. After the glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, and the leaves sepaz/.py a(mc d,zrate. Then a negative object is brought near the electroscope, but does not touch it. W ( zyp,./mzadchat happens to the leaves?

  A large negatively charged object is placed on an il 92mqttm0ixeq 10l,mnsulated table. A neutral metallic ball rolls straight toward the object, but stops before it touches it. A second neutral metallic ball rolls along iql2 ,t0mem1q mtx09lthe 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 constant5q/kraz z0es8 $k$, which appears in Coulomb's law?

  Two charged objects are separated by a distp k(s.ae1/zn t5ncj ,nkrs)u-ance d. The first charge is larger in magnitude szats(k 1jr5c/un, )nn ek-p.than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They are pb* ntj2 8 1-nrmb/9vzkae qu8h8arfn4mt0 d4 xlaced near each other on an insulated tabln2rah0tv4df /kux 1rnzbbe8* 88 4 mqn-m9ta je. Which statement best describes the electrostatic force between them?

  Two charged objects attract k,4( scyk: bmpeach other with a certain force. If the charges on both objects p,bykm( k:4cs are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractived/p-w2x *fu jc9)bkdw forces of F on each other. If the charges are separated by a distance of dkbj -wx/u )*wpfc29 dd/3, what are the new mutual forces?

  Two charged objects attract each other with a force F. What happens to the fo9g h+l e x6(ljtivz),t4nq oq-rce between tht6 o+)zx ( ietn9hjgql-4 lqv,em 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 secmn2igh8,d.9e (eg;yuw 8u *23 pgoffx0u kkbparated by a distance of 1.0 m. What happens to the magnitude of the force on the proton if a second electron is placed next to the first eepcek;. uxif d8 ,uowgmu0*(9gbkhfg283ny2lectron?

  An electron and a proton are separated by a distance of 1.0)gxfkg iu +wa2jp op3c//j)y- m. What happens to the magnitude of the force on the first electron if a second electron is placed next to thuac wxfigppykjj2g/-o+3/) ) e proton?

  An electron and a proton are separated by a hyxud*-f9.55* varptp+ dt s,r9wz qbdistance of 1.0 m. What happens to the size of the force on the proton -z5t9wvyrq s pru* adf95.xdh bp+*t,if the electron is moved 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a secondwf n9aho 5d-pu jg;l/0 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, identag-u;dpj5fon 09h lw/ ical 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 3oo, nh5p zd8atriangle. 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 plazn,do h538opaced at one of the other vertices?

  Which of the following is not a veco jv.om-w ac;z )j-/jgi wy.r5tor?

  At twice the distance from a point charge, th3j+jxnu b.v89+c lzpoubf 6s.e strength of the electric field

  Is it possible to have a zero electric field value between a negatisi o8lj:1z.rhj3 ef19r1l plqve and positi1lshjiql o 9r31z8.p r:jl1feve charge along the line joining the two charges?

  Is it possible to have a zero electric field value between two positive chargemf :ovu(f)el.cp36g n s along the line joining the two charges?mf g:lcu6v (nef3 )op.

  Electric field lines -v+dy/rw6xw onear psitive point charges

  The electric field shown7lj vak 2ydzg;s5 irm.fs* -+x

  Can electric field lines pe/ ppib:ye-/ intersect in free space?

  A solid block of metal in electrostatic equilibrium is placed in a unifz aisv1uih /1m6+bw0uorm electric field. Give a statement concerning the electub6/sm zw u +vihi11a0ric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of eq:/5sgq8nuv v qual diameters are each given the same charge, the electriq:qv usv/5n g8c field (E) midway between the center and the surface is

  A cubic block of aluminum rests hr un9s3d6wa (6 .b j6y7bogrlon a wooden table in a region where a uniform electric field is directed straight upward. What can be said concerning theyn6 6h 9ubrlgrw(o3. 7bdja6 s charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric charcn x4azr 0 t-szp++9khge

  A positive point charge is enclosed in a hollow metallic sphere that mj3tt as 4cj *m51*zqjis grounded. As compare1atjj3*5 ms *ztcq4jmd to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conducx8f1,b r 2y24i8unea :htc+5wxrmeu stors in static equilibrium.

State Gauss's law.

  The charge carried by one eleczph okw g.rrd8/t4..uuep/ .ltron 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 more pro+ihewa o4/(q ntons than electrons does this piece of plastic + h4q/won(ei ahave?

  What is the charge on 1 kg of propep - hp.+ikqa64kalo u/ kd;4tons?

  An atomic nucleus has a charge5s;v r+e9qy qc 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 cm2ta .z6nh/ul ysai 5kf63(j du, have charge values of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric force bz s5 fl6.hu 3atjanu6i2/kyd(etween them?

  A 1.0-C charge is 15 m from a second charge, anqa u86 xtj;8n1irmr5 td the force between them is 1.0 N. What is the magnitude of ;1rxr688u5t ijq tamnthe second charge?

  Two 1.0-C charges have a forn8lk pm,*to *fce between them of 1.0 N. How far apart are they?

  The force between a n,sj0n:g6o*gv gn w59vcb+ ov$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2.0 cm apart, exper lw 6yusx9q8yzgm( ( ,r v4ay sg,blcvn;x02h1ience a 1.0-N force. If they are moved to a x,xv 2sgc ,(y;mr4gvb l6sal 8wz0nh qy91uy( new separation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 m dw8. il 1km9 r*wgfs3(*.pog+sel oslty.q:a C are placed 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. What are the magnitude and direpsl1 9+ dregm: yts iof.o.ql l(8kaw*ws*3.gction 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 o tcwll0eav 38z,:0rs 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 charv 3c8ol wzse00 t,al:rge at the origin?

  Three point charges are located at the following positions: Q1 = 2.0p0jo7qov9js 8r 7zi:g 0 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3 = -5.00 mC at x = -1.00 m. What jp i q:7zj07sogv9or8is the magnitude of the force on the 3.00-mC charge?

  A point charge of +Q is placed t5noj3. a:p bdyysb(;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 t t5 byaoj(p.3n:bys d;he 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 = 8:5 bprta.fec-1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5.0 nC ctbae.f 8 pcr5:harge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is atw1tnrf +i+v5 e (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forc r1n+5ivwtf e+e on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed at the vert:fgln9cs x./oices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force which acts on any one of the chargen.:g cxf l/os9s?

  Consider point charges of +Q and0v7 wen,eo0 a04lpvl m +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 actin0mo7e 40l la0v wvn,epg on it would be zero?

  A +3.0-C charge is at the origin and a +9.0-C charge is at + n4 td 0g;)je2s6ahefpjbdr-x = 4.0 m. Where on the x-axis can a third char est+)g-26hdbdj; arp fj0n e4ge 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. Whsqf,*aqc 5(d m *xe.rs/ d.einere can a third positive charge +q be pla/esfrm .,i( xead* qsq *ndc.5ced so that the force on it is zero?

  A copper penny has a mass of 3.0 g. A totrb q w20gh8g+lwmxa,z y9 sj,4al 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 flv c(p; /ea-zbcpyi* /tv i(y9orce of gravity by the attraction of a fixed proton some distance above it. How far ci9vy z/vbtypc( lpa ;(e*i/-above the electron is the proton?

  Two 0.20-g metal spheres are hung from a comi4) ziyqy;7yzmon point by nonconducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repul7zyizq)y 4i ;ysion 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.w xb5qh+0xo x- What is the magnitude of the electric field at a distancew +xo0 qh5bx-x of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fie nc5m, s;9v; t ayweueja+(v 7kely;,qld at a distance of 1.50 m from a 50.0-ma k(;+neq vyc75j,s vewluyt;a;9 ,enC charge?

  A 5.0-C charge is 10 m from a dqabchoidm,o9v045i ;7 gog9small test charge. What is the magnitude of the electric field at the location of the testhmdioo 9ggoi7;q,0a vbc 49 5d charge?

  A 5.0-C charge is 10 m from a small test charge. What 7jxu ex bt,qb6o;od35is the direction of the electr6x b o5j3,dx;q7tb oueic field?

  A 5.0-C charge is 10 m from a sma6v ld-,5;:v2 qrxps)/8 qfxriv/w-p vtvjvxell test charge. What is the magnitude of the forcvxp -x8,rrev2j- 65/fxqtsl:dv; / q vvi wp)ve experienced 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 b -.(bchs 7kdfvy a distance of 4.0 m. What is the electric field at a p.hd kfbc(v 7s-oint midway between the two charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick and a -4.05ar(x k:/m+w +aisfq u mC charge is placed at the 50 cm mark. What r+ x(w/5q :k iaafu+msis the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stick ano* z1m4jf os0kd a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two charges is thfoz *o40ms1j ke electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are pla4 os1n/x48nxwc s4tu gced at x = 0 and x = 0.20 m. Wh 4ntcssuw8oxx /g41n4 at is the magnitude of the electric field at the point midway between them?

  Three 3.0 mC charges are at the three corners of g g3th dj; p8jn0i7piad-y;v6 a square of side 0.50 m. The last corner i t70a;pgi 6h- dpdy;nj83 vjgis occupied 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 at the cor).tv sw0dl89g/ j dhmwners 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 at the squhvdg.t/smw )9lw0j8d are's center?

  A force of 10 N acts on a charge of 5.0 8cs ;681u y*javurpmcmC when it is placed in a uniform electricas ucj1m6 r8 yu8*p;vc field. What is the magnitude of this electric field?

  A particle with a charge of 4.0 mC hf rli2kr.w3i-x p4 ghq tam646as 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 mdy vs3sf5v9 )czrwc4 -ass 0.120 g is placed in an electric field of 6000 N/C pointing downward. What charge must be placed on c- vy)cvsdwfr459 3zs the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -ot:c ;aibx+ b iq/j11q2.00 nC. The ball is placed inbitba1c q+: io1q;x j/side a uniform 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 carriw.l w i .ur9hw)v7d;eyes a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm fromvidwwwrl.u.) 9eh 7;y the sphere's surface?

  A metal sphere of radius 2.0 cm carrge- e; by4ghm5ies a charge of 3.0 mC. What is the electrih;g45gy -bem ec field 6.0 cm from the center of the sphere?