State the law of conserqw b t99hcrl*50dzw;ivation of electric charge.

  Is it possible for two negative cha. oubnh2a-+ jfrges to attract each other?

  Is it possible for a positiv*h+l3uc4t21n ;a 5u,zx loyaeum t b/me and a negative charge to attract each other?

  A glass rod is rubbed with a piece of silk. During the process the glass/j4)q kk4-yjmn e3t /fnnqvxu y+eb49 rod acquires a positive charge and the 4j-xbm ynqtn/u)3+ 4qjkf 4/n9vkee y silk

  A proton carries a

  The model of the atom shows av d vxf7s7(c9o

  A neutral atom always f d*.z,teon2nj6 31k k-cqmh thas

  An atom has more electrons than pbrdw)p:(etgjj :y y/ 0rotons. The atom is

  Materials in which the electrons are bound gblfuwk tfgpdtf 5o+a.4w-)wu1a*,8 very tightly to the nuclei are referred to ba4f-,fud tw5u1 g+aw8fo*wg.kp lt)as

  Materials in which the electrons are bound vjqck;jk .qs v9; dui)0ery loosely to the nuclei and can move about qj v;qisj.u9;d )0kck freely within the material are referred to as

  A negatively charged nj/szcx0q2 s surn+9 z79v-emrod is brought near one end of an uncharged metal bar. The end of the metal bar farthe+xn7mzrss -uj cez/ nv929 sq0st from the charged rod will be charged

  Sphere A carries a net positive charo,bm*qm*b b3im /kl s 98ebe6ky *y9nbge, and sphere B is neutral. They are placeebe bqbmmb/o3b96i* *ylnmy9sk8*, kd near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Which statement is correct?

  How can a negatively charged rod charge an electrkyz d ch:0yb5* f ht+z+az+b eg+:r0lsoscope positively?

  An originally neutral electroscope is briefly touched with a pos5)bb(kypu,l(eef -zxrdgs5/ hx8d 8 citively charged glass rod. The ele,drbb c(xp-hzse(x/ uldey 8g85 kf5)ctroscope

  An originally neutral /* eby:oee8)mq* w 74 eketnthelectroscope is grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the electrosyee) n*8 ee to*4tqw:7ebk/ mhcope

  A positive object touches a neutral electroscope, and the leaves s wi5f4btnb2k2 sm-g0heparate. Then a negative object is brought near t0nbw -if2 h4stkm5g b2he electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged objt5l78.(m o: o 9m kqwddpe;zlj;8wgul ect is placed on an insulated table. A neutral metallic ball rolls straight towa wd78l u(o;w;lo:k5 mjqt8 .pmle9 dzgrd 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 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 Cjb(9 4t-a/txp:k i/ tzz xs3lr:; d,umrra-esoulomb constant $k$, which appears in Coulomb's law?

  Two charged objects are 9+jd s u ni9pkn*d3e f;n2w,feg)(uuxseparated by a distance d. The first charge is larger in magnitude than the secn w(fd ues2 +ug kj;n,9ei3x*un9 dpf)ond charge.

  Sphere A carries a net charge and sphere B is neutral. Tsz7vwp+g.s5o9hm- z e hey are placed near each other on an insulated table. Which szps9vgw oeh5s- mz+.7tatement best describes the electrostatic force between them?

  Two charged objects attract each other with a certa 7fb1grgv : dwm,q+p2lin force. If the charges on both objects ,b w g:r d+fl2v1gmpq7are doubled with no change in separation, the force between them

  Two charges are separated by a distance d and exert mutual attractive forces h 6sex-7wv 1j4dw6i5 az6mqhhof F on eaca7 1 hiwje66wz mvh6dxq4-hs5 h other. If the 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 happens to kccx,5.im1m(nc 6j pco q(x8ythe 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? The force is now equalnmkc .6p5x(cjxq(mcy1 i 8 co, to

  An electron and a proton ars1w4 kymk-l 6be separated 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 electro46 k-ys kw1lbmn?

  An electron and a proton are separated by aps:ntt:r,lb mjm/q 92er5,a c distance of 1.0 m. What happens to the magnitu c: tmtjr,,a nl b2m:5pqser9/de of the force on the first electron if a second electron is placed next to the proton?

  An electron and a proton are separuv j8k2ayfpo: /a7 b*iq2na,uated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron i qnap k vyu2jaf:u, o/7a8b*2is moved 0.50 m closer to the proton?

  A point charge of +Q ilgm)w 21 c(dy;qlv7dfwojn 3 0*kom.d s 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 othe2dolw0)mo v.;dc3f(gykm*17jd lw nq r 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 anc1lk r/:/jf2sh4cab5.hz y am zx04u v 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 magnitudb:/zl a0cm hz r4j1vf/4ahc52syx. k ue 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+maq au(gezm0str- ;+ a vector?

  At twice the distance from a point charge, the strengthd4:cn 1cs(j0oaupi 4e.an b:n of the electric field

  Is it possible to have a zero electric field value between a negative and p,hyd3(gjk3n u;jafh)ositive charge along the line joining h;fu (d3g3j, nkaj y)hthe two charges?

  Is it possible to have a zero electric field value between two posig5ez yqxnpjlvx *x0t nrmwsf:t3d/j; e9)( -:tive charges along the line joininynex :x;zf(m-v *petjd9l05)q3x: gtrwn/jsg the two charges?

  Electric field lines near psitive poit)o8vaus1 b8 /sb4skent charges

  The electric field shownmzd:kf7 4oy16bbh rdsw 65jc)

  Can electric field lines intersect in freej o.pj)cyiv dk*0v(d oy59uu/ space?

  A solid block of metal in electrosta)f 3hiz( umyb4tic equilibrium is placed in a uniform electric field. Give a statement concerning the electric field in t zhi4f u)(mby3he block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are eb0hp5mm5s* qwob8 w x6ach given the same charge, the electric field (E) midway between the center and the surface is wwb bhp mo05qm8*6sx5

  A cubic block of aluminum rests on a wooden tabwxph nxj h)o2;/op* r0le in a region where a uniform electric field is directed straj)or xwp 0 xp2h/o;*nhight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in eler(e wdlg 5juk +i-e/i)ctrostatic equilibrium near an electric charge

  A positive point charge is enclosed in a hollow metallic sp stl1)fm(r a*cv ,ih+hhere that is grounded. As compared to the case without the hollow sphere, the electric field,(*thm)al isvh+ r cf1 at a point directly above the hollow sphere has

State three properties of conductors in static eqomd vi+-u hw8)sl/n) (m/6gwxcjyrh 9uilibrium.

State Gauss's law.

  The charge carried brgbe2,lc 5:/i 6:ns k gn,tigmy one 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 mC. How many more protoi) i7cze jqd50 u/bu7 5a3iofmns than electrons does this piece ofq)um3iei0 5ofj 57u7cd/abiz plastic have?

  What is the charge on 1 kg of protons.g- 2iqvbq+sb :fi1 9 qxd1b 2.xkvwjs?

  An atomic nucleus has w)rn:kz.7ys, ma9h4boou d+v 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, have charge values of qgv4; ni/j/ jra6vs0 jv.v3z7sfgxw3 2.0 and -4.0 mC, respectv0jaggf j/xvs/j4nv7s; zr33 iw6q.vively. What is the magnitude of the electric force between them?

  A 1.0-C charge is 15 m from a second charge, and the force bee1s* lrz63nse b ju/r6tween them is 1.0 N. What is the magnitude of the second chargre bl 6n6jesr s*u1z/3e?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are )u:yf l4o6sxu they?

  The force between a e2.dsxl4b b/mvh7b, o $30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initially 2qi + ),:e;cmf ) uomtscjxt5b+.0 cm apart, experience a 1.0-N force. If they are moved to a new sepa q o,i):s++jbm5) cxm;tfc eturation of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are plo.- ;vm;ualp iml cnbl1;)a 3daced 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 direction of the electrostatic force which acts on the charge at the omi;cll-ml 1u; dapnvob.3;) arigin?

  Three point charges are placed on the 60(kp qxrswbr(pu u+; x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, and +4.0 ;pupb+(x0 6qr rkw(sumC 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 following positions: nxqq8;/bid ;wzq a4*6ecqk x: Q1 = 2.00 mC at x = 1.00 m; Q2 = 3.00 mC at x = 0; Q3ax:6db; xqq nqz ie*kc48/qw; = -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 the centeraevzd ka4b9h +k.iz:)1g ebd) 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. What is the magnitude of the force that acts on the center chk 49h ide z:v.)1)bg ked+zbaaarge 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 i cmojzo.rja +;w)x*m:s at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the nxa*;)r+cw :o.mjzo jmet 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); mzf2 6z o1nmk84s ese72ug bl,Q3 = 5.0 nC is at (0, 0). What is the direction of the net force on the 5.0 nC charge?gs,16blf7 nu2 z4zesomm2k8e

  Three identical charges of 3.0 mC are placed at the vertices of an equ k*j( cvag89nx.fbzt;mn6fx 7st m e14ilateral triangle which measu6xc f9fx4*1e(.g 7nvkbm tsanzm;j t8res 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 mxzf 0-wq6 jilc,p+,kseparated by 3.0 m. At what point, on a line between the two charges, would it be possible to plawkqf z 0 +,ipcljm,6x-ce 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 ch3 mnn x a0eiehe.d)-to:z9 kr5arge is at x = 4.0 m. Where on the x-ax hnn okm.a):e5zt0 e-ir9xe3dis 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 rxvxzx );4drj u )kipfc8,n3kr2mu61 = 2a. Where can a third positive charge +q be placed so thau6j,c)x d 4u;rk8zv n2ixr)xrf3m kp 1t the force on it is zero?

  A copper penny has a mash;ow 8c-(to ops of 3.0 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 a fxm.7x wxl 36u/ej .jb1y q6jgyixed proton some distance above it. How far xguxj.qj36j ex17by/ y w.lm6above the electron is the proton?

  Two 0.20-g metal spheres are hung froszhq/+y -2nwr *mw/ 03dsv smtm a common point by nonconducting threads whi3v/q r2/ntssmd-z 0y *wsw hm+ch are 30 cm long. Both are 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. What is the magnitude of the electr +vovng k57+lrttjqc(-3 nb-c9; jjht ic field at a distance of5kb 3t-7vcvnqg + t(jjr n;ljtohc-9 + 1.0 m from the nucleus?

  What are the magnitude and direction of the electric fje z:tvz7foroth0.2v(k5 8guield at a distance of 1.50 m fromv8h otkez.2 o(5 rf07:tjvz gu a 50.0-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is bcl2e*mc xgjs; :f1q(the magnitude of the electric field at the location of q cflsx*jgc;2 m1b( e:the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the d:08mnpeq;nn uirection of the electre 8:n0 pun;nqmic field?

  A 5.0-C charge is 10 m from a small test;:4x5n dyqqgc81 ipje charge. What is the magnitude of the force experienced by a 1.0 nC charge placed at the location of the test charge418gnxcpe: d;q5 ji qy?

  Two point charges each hr6fziis re1k2rbb9jwzx2n/83w cn13ave a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a pox / n zc1s2 2i8wr9kb3rz61wbeijf3 rnint midway between the two charges?

  A 5.0-mC charge is pla gxb(lnc 1oj)7ced at the 0 cm mark of a meter stick and a -4.0 mC charge is ( 1lgco) xjb7nplaced 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 nl: .lt3x)ju/f8t y pqcharge is placed at the 50 cm mark. At what point on a line joill/)txpt.jf3nu :8 yq ning the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 and x = 0.20 2(yg)lt;m) l0 f3gd ezthv(fxm. What is the magnitude of the electric field a xzh;ld )l()y3tvg gf(t20fmet the point midway between them?

  Three 3.0 mC charges are at the three corners of a squarf6q 2no er8jw5e of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field qeor8wn f j625at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are p:7ioe .aqj/u pa1a pg2laced at the corners of the square as follows: +4.0 mC at (0, 0); +4.0a jp . uap/:7eg12aoiq 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 square's center?

  A force of 10 N acts on a charge of 5.0 mC when iq w8xiucw z*/*t is placed in a uniform electric field. Whax8w/i* cq*uwzt is the magnitude of this electric field?

  A particle with a charge 39+nu,dh byi :,boa pdof 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 ikub s, 4j(mh;qpn)y((yn kb*jn an electric field of 6000 N/C pointing downward. What c)ybn ksmu h*k yjjp4((n,(q;bharge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a charge of -2.00acv6dyr; k9v2v/e be-mx6 ) zl nC. The ball is placed inside a uniform electric fielvkerz y6 bd-26v;x cavmel/) 9d, 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 carries a charge of35i *xc co 1y-*vxhkon +2.0 mC. What is the magnitude of the electri * c1-o5 k*ny3ivxxcohc field 5.0 cm from the sphere's surface?

  A metal sphere of radius 2.0 cm carries3ts: q au*s) r/yuin1s a charge of 3.0 mC. What is the electric field 6.0 cm from the center of a nq1su*ti s/u3) rsy:the sphere?