State the law of conservation uny :+lz.33 k3xo+bai ng*iwv of electric charge.

  Is it possible for two negative /6/ hychm2g pz9nszn5charges to attract each other?

  Is it possible for a positive and a negative charge to attracs8)dw:tu(szo -lpq msr5m19 l t each other?

  A glass rod is rubbed with a piece of silk. During trt.au 9mh.r8c he process the glass rod acquiresmtcr.ar. h9u 8 a positive charge and the silk

  A proton carries a

  The model of the atomd419r9p9rxs i hrb0wu shows a

  A neutral atom always hasrm),a bpxjflq1i sby26 6)ic7

  An atom has more electrons tqgt(:oi cf/i5h05 k pghan protons. The atom is

  Materials in which the electrons are bound very tightly to the nuclei are2 ut- (pxq11ww*/vcsq s7oho.ki7jmh referred to a tp c qixsh2 ohmvqwo1*(-s k.j17uw7/s

  Materials in which the electrons are bound very loosely to the pne e4.t( ,cdo )h)m/r5zo w2b6xmquonuclei and can move about freely with )omrp5coox)e .wemzu(h/td,6q 24 nb in the material are referred to as

  A negatively charged rod is bro pirq:l(::rq)3w4m tm58w rxrwl2rxlught near one end of an uncharged metal bar. The end of 4p m3:)8q w lxi(lwqrmrrr 5x:ltr2w: the metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charge, and u xt;yqgk, 7ssh2m: :rsphere B is neutral. They are placed near each other on an insulated table. Sphere B is briefly touched with a wire that is grounded. Whichtgm2,sksh :q;ru: 7yx statement is correct?

  How can a negatively charged rod charge an el h6ksr9xcr,0i3dy z(0q+yecn ectroscope positively?

  An originally neutral electroscope is briefly touchyvz2i(h zw9d 5ed with a positively charged glass rod. Twz9 dz(2y vh5ihe electroscope

  An originally neutral electroscope is grounded briefly w0 oci l6*l-pkphile a positively charged glass rod is held near it. After the6 p *-p0illcko glass rod is removed, the electroscope

  A positive object touches a neutral electroscope, andye+ugq8 76h 0s aibwwaatn(77 the leaves separate. Then a negatiya e8 0uw( a+gh7b7s7tn6iq wave object is brought near the electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged object is placed / si k ;ti)8xz)zvro:kon an insulated table. A neutral metallic ball rolls straight toward the object/)o ;r )kt8:v iiszkzx, 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 Coulomn1d nv5yt6 x2lb constant $k$, which appears in Coulomb's law?

  Two charged objects are separatemq.wq8egt op6ku.*g5x3n9 jm0g.wvgd by a distance d. The first charge is larger in mw .jxvot wg9* mmqqg80gn.k53u.e 6pgagnitude than the second charge.

  Sphere A carries a net charge and sphere B is neutral. They bjb5qcxmh2tm v,l/+ /x. ga: jare placed near each other on an insulated table. Which statement best describes the electrostatic forcm jq2+hjxab bctg:/l5m,.xv /e between them?

  Two charged objects attract each other with a cer(d ffg7eg52/t4/kkg1bxszj 2 r9rnxmtain force. If the charges on both objects are doubled with no change in separation, the tz4/d19(/2j7 gg rskk5xf rmge2nfx bforce between them

  Two charges are separated by a distance d and exert m6x(inezz 0ej0utual attractive forces of F on each other. If the charges are separated b0xzne ez0 i(j6y a distance of d/3, what are the new mutual forces?

  Two charged objects attract each other with a force Fp aqya0f71mfx+i 4-gizcm. 3g. 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 origina7 za+4qmxag.f1-ii3pgm0cfy l value? The force is now equal to

  An electron and a proton are separated by aj:ix v rk7fow/kn)*w8 distance of 1.0 m. What happens to the magnitude of thekx*:nv7kf 8)i owj /rw force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separagx1u kmh)i4a3-n6pir ted by a distance of 1.0 m. What happens to the magnitude of the force on the first electron if a sexi4h6r3pn- 1kuamg i )cond electron is placed next to the proton?

  An electron and a proton fnsa1 a(ugr1t0 eu.(bo; gen6are separated by a distance of 1.0 m. What happens to the size of the force on the proton if the electron is movef n 1s(u1ug.gbn(ea0 6rt ao;ed 0.50 m closer to the proton?

  A point charge of +Q is placed at the center of a square. When a9xa n 7z,s w0o ;.wzh(uegmo-i 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 thre.zogm eswx-0(io;h zw,7au9 ne 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 f 6bu1b n8d5ehplaced at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.hdb 8bf 516eun0 N acts 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 followiuop1(kk qv 80kng is not a vector?

  At twice the distance from a point charge, the strength of the electriu xu svw3)8 1auoza85pc field

  Is it possible to have a zero electric field value between a negativekhm p2n i2*tntu9pq gc z ;(km36nxh*8z8 hw*m and positive charge along the line joining the tw9 8n;2kupwt(i *x6 qm *t28p3h*nkzmg zmhchno charges?

  Is it possible to have a zev5v; vj.7n(dci)cuja,fhu0(3 qh ld pro electric field value between two positive charges along the line join;3v u ch 0jpv5cf).da(julq7 ,ni(hvd ing the two charges?

  Electric field lines near psitive point char4zki1tt*6) ttrm;*oj*gxr jj ges

  The electric field sh 1rtpo2fmj4 (o9o cx.gown

  Can electric field lines intersecxf:tfy5t7b :rt in free space?

  A solid block of metal in electrostatic equilib d14;)xnst;f s.vgk+a bnzidw9 1vua 5.eqj3 krium is placed in a uniform electric field. Give a statement concerning the ;n un5jvq; 4 d1a1)s. z9vase+ftk3.igxdbkwelectric field in the block's interior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are ea vq)v)rs irdj 6h(aj21ch given the same charge, the electric field (E) midw 2iv1(r)hdarsj) 6jv qay between the center and the surface is

  A cubic block of aluminum restse.vnjq z2 0;3dbgk ,mkz)zmny -*+qen on a wooden table in a region where a uniform electric field is direczdn e-yn2gk,eq) *zm;q0z kjb+m v3n.ted straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an electric z+.cpl+q aj9 vh-ms itoayok 9:6+ml2 charge

  A positive point charge is enclosed in a hollow metallic sphere t2 omm)ihw/+vjlld : /chat is grounded. As compared to the case 2cm/lj:v +io hm)wdl/ without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of conductors in static equilibriumr); h/f c(ze0fbqlp 8(wg)7qf dunr+q.

State Gauss's law.

  The charge carried by one pg y -2d+mkiyl+ *ivx6;djwo3electron 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 manelt+undlbvu3 ) ..rn7 g:nj hl01q j5cy more protons than electru71nh jn lrel35cl :bgv d+.tu)j.nq 0ons does this piece of plastic have?

  What is the charge on 1 kg of p/ +jm4v (zdtnurotons?

  An atomic nucleus has a charge ofg w7ogpznj-39 s-pm7.uyl m4 y $+40e$. 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 valfb/90 /)c5udcxm q-vi hjiv9sues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric b hc) u9/5fc0m -visi qv/9xjdforce between them?

  A 1.0-C charge is 15 m from a second charge, and the force between them is 1+ nz t,jdvjv53 yaf,s1.0 N. What is the magnitu,jtv1+a f, 3 dz5snvyjde of the second charge?

  Two 1.0-C charges have a force between them of 1.0 N. How frh1cxn;jm zq)/ zbs++) tze6c*uw :gxar apart are they?

  The force between a f +lhy+8va:3y( i;nol b,+yqgj2caq r$30 \; mC$ charge and a $-90 \; mC$ charge is 1.8 N. How far apart are they?

  Two point charges, initiacndqb 0bro/k*::;fv z:w +nh g(rc b1vlly 2.0 cm apart, experience a 1.0-N force. If they are moved to a new separation of 8.0 c*znh :bb(okv 1g/d:0 rqfc+b;:vrcwnm, what is the electric force between them?

  Three identical point charges of 2.0 mC are pjz4e n3 e(c(gilaced 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 foze cg( 4(j3inerce which acts on the charge at the origin?

  Three point charges are pla*zxn y0rq6;4 d*wpeg tced on the x-axis. A charge of +2.0 mC is placed at the origin, -2.0 m C to the right at x = 50 cm, andqy;rp* *t4wx60gde zn +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 following positions: Q1 = 2.00 mC at x = 8iy5mm6m4 f2(pw uhn-f8sryr1.00 m; Q2 = 3.00pn- 88m24i r56mu(hwfrs yy fm 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 charge?

  A point charge of +Q is placed 8ex a9q8yy* qhg/-sf:a(j8y0id ouzcat 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 positivia(g9:j 8 08 ahsy-o*x/ yf8dzycq uqee 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);9by*gl*q j zck- pm)w/ Q2 = -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 /q*wbzpk -clj*)m y9 gthe 5.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is1r7 e ju/hgyfxpvc7k0:( u7ud at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direc(1x j7fu0c/h pkevdy:ugr7u7tion of the net force on the 5.0 nC charge?

  Three identical charges of 3.0 mC are placed )d 5+n wa y 2t26c;:tvzcutsvwh zs/i:at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude 6 vv)n5+yw ts/:2:z 2ct;uaszthidwc of the electrostatic force which acts on any one of the charges?

  Consider point charges of +Qwhoo6/s9i8e-bsqu x bn,5u w * and +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 acting on it would be ze/eqbx b ssw-86h*n,wu o oui59ro?

  A +3.0-C charge is at the origin and a +9.0-C charge is at x = 4.0 6ctcin;wni x zmyq0*h0 7:k9+jon,dtm. Where on the x-axis can a third charge+67* i x yh0qc;mnznnkjot,cd:i t90w be placed so the net force on it is zero?

  Charge +2q is placed at the origin and c bcrlru 0-7fk5harge -q is placed at x = 2a. Where can a third positive charge +q be placed so that7kl5bc r-r0 uf the force on it is zero?

  A copper penny has a ma1tyn l nz7p )job5+sza/6z0wzj w*vs6 ss 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 the6ym yz .cnqx sl4+7dyw3* slx.wc3 j7m attraction of a fixed proton some distance 3c4jcyx*z m3 ls 7. x.lsd7nwqy+my6w above it. How far above the electron is the proton?

  Two 0.20-g metal spheres are hung from a common point by nonconduc bao/0nz:4pjz p h8lncr46+jmting threads which are 30 cm long. Both are given identical charges, and the electrostatic repon6zc r bj+4n/ zjph8a:lm p40ulsion 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 electric f+ :xg:rd nigkqi r 6x. x8)ke5 l20bz:ky7hgciield at a distanci6ldibig zk.2x x8x7ykcq 0nrg 5:)h::r e+gke of 1.0 m from the nucleus?

  What are the magnitude and direction of the electric 5ekag, g1ru fm1jl i10field at a distance of 1.50 m from a 50.,ra gki1flm g1eu 50j10-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magni,d9nb fbm4 cv5tude of the electric field at the location 9b5cdvf 4bnm ,of the test charge?

  A 5.0-C charge is 10 m from a small test charge. What is the direction of the en21pvg :ve w7i-g2ed we2ei1w:2vgvdg p 7w-n lectric field?

  A 5.0-C charge is 10 m from a small test charge. What is /tew- jzu ok5*j;f80: kxmrjxkv / rf4the magnitude of the force experienced by a 1.0 nC charge plac*5jr tj;8 kxu/v4jx0-fkwk:e/ rmfozed at the location of the test charge?

  Two point charges eaczhlbh7,rms4(f 9g6 d fh have a value of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point migr sh9z 6h(,lf7f mdb4dway between the two charges?

  A 5.0-mC charge is place gr*r sazb/s+ ry826:hkza8end at the 0 cm mark of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. What is the 8ehz+2sbrk a rrsa * y8z6g/n:electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markgjc8iz 7ggii rtl1w8m3 7h1- n of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a linh 1m1ii7-gnlggr 8t c83zwi7je joining the two charges is the electric field zero?

  Two point charges of +3.0 mC and -7.vgslz.6 2r jb2l ef/g.0 mC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric/slevjl gz 62g..f2 br field at the point midway between them?

  Three 3.0 mC charges are at the three corners od4x.3 weu acsnvt71 pr8h 0qr9f a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the eqcw 8v1rn u7.ea93str4x d0hp lectric field at the center of the square.

  Consider a square which is 1.0 m on a side. Charges are placed at the corners;0e*h vm(ci bn 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 i;*(cbe hn m0vat (0, 1). What is the magnitude of the electric field at the square's center?

  A force of 10 N acts ond+5 ve *,p eat0qn*vmvtf3(b b 0hr-wl a charge of 5.0 mC when it is placed in a uniform electric field. What is the magnitude of this electric field*emvd q+av5 t,prhwn(-t00 *bbv3elf?

  A particle with a charge of 4.0 mC has *ojiwx :)6o; shotp(f 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 an electric field of 6000 sk-lgr9 8yy3c c28cfiN/C pointing downward. What charge m y23sicy-rc kc8lgf9 8ust be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carries a1cwmgzf*r -6 y charge of -2.00 nC. The ball is placed inside a uniform electric gr *c1zfwm-y 6field, and is suspended against the force of gravity. What are the magnitude and direction of the electric field?

  A metal sphere of radius+v:b9a shfk,r 10 cm carries a charge of +2.0 mC. What is the magnitude of the electric field 5.0 cm from the sphere's s9s r:,bf avk+hurface?

  A metal sphere of radius 2.0 cm carries a charge of 3.0 9z z)rjq lougr.a(;:cmC. What is the electric field 6.0 cm from ag.l:czj q9zo) ru;(rthe center of the sphere?