State the law of conservation of electri ihkr+uyi+yh, (be;0sag ,aw1c charge.

  Is it possible for two negative charg- ;vbpsay b1wx s)/8sfes to attract each other?

  Is it possible for a positive and a negative cha2qgan i8p3s 5brge to attract each other?

  A glass rod is rubbed with a piece of silk. i m6v2prvjq 5i08w*y xDuring the process the glass rod acquires a positive charge and pj05i6vw2y8vq r x* imthe silk

  A proton carries a

  The model of the atom shdogjrgf ;(x k7x /wxve93:(faows a

  A neutral atom always h orz0,+3gg xivas

  An atom has more electrons than protonsj*v.kg jt3 :syw17byc. The atom is

  Materials in which the electrons are bound very tightly towj+nux6qu p+2 the nuclei are referred to asxw +np+26uju q

  Materials in which the electrons are bound very loosely to-fmn -iwk e68i the nuclei and can mof-nk i6ew8-i mve about freely within the material are referred to as

  A negatively charged rod is brought near one end of an uncharged me+ /v,fexv s3zital bar. The end of thevsx/ v,3e+fz i metal bar farthest from the charged rod will be charged

  Sphere A carries a net positive charg .hcw8td 4kf ,eg)(ozo( 0jpgwe, 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 ctgh(ze w8pwoj0 c,(4 g)of. kdorrect?

  How can a negatively cg ptw1 q1k7b6charged rod charge an electroscope positively?

  An originally neutral electros:cn1ozy 8lkd 2cope is briefly touched with a positively charged glass rod. The kol82yn1d zc:electroscope

  An originally neutral electroscope 0;b i fd,.xmrd)rcp/-me *d vfis grounded briefly while a positively charged glass rod is held near it. After the glass rod is removed, the emrmx.b d 0d ;efpri)/f*,c- vdlectroscope

  A positive object touches a neutral electroscope, and thebaf,(o48bz tl leaves separate. Then a negative object is brought near thelaf(obtz,8 4b electroscope, but does not touch it. What happens to the leaves?

  A large negatively charged o;pkxyvsg ;p srb5egp;/8e8nn.,- drb bject is placed 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 first ball rolls 8;ngyxkr rp8b,ngdv;-;esps5 .p /eb 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 Cou;xj 8kozwzw k+fwa1 *-lomb constant $k$, which appears in Coulomb's law?

  Two charged objects are separated by .qsxz9 yl3vh/ a distance d. The first charge is larger in magnitude than the second charges. /lxhq3 9yzv.

  Sphere A carries a net charge and sphere B is - dvv9o7r7:c9knshq mui 4m;o.o4 xceneutral. They are placed near each other on a c9 .rikuohxdv4;nvs:97o-74moe mcqn insulated table. Which statement best describes the electrostatic force between them?

  Two charged objects attract each other with asrq y0gaoe 0 v4m;a8rp .b-cw/ certain force. If the charges on both objects are d ey4mr;gwarpvo -q sc.0/0ba 8oubled with no change in separation, the force between them

  Two charges are separated by a distance d a7 xp/;(u/,njum. zgoks3bc rxnd exert mutual attractive forces of F on each other. If .b3;xu u n(rjpok7gz /sm/,c xthe 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 the fogw*k- s0u(i :btnh)eu5t*fj krce between them if one charge is doubleg)b*5hk w:su ju*ik-(tt f ne0d, 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 separateh9; go8:ecw1;kh xn,yi 6gbeyd by a distance of 1.0 m. What happens to the magnitude of wxyg bi;neoc9e6h k:;h1 g8,ythe force on the proton if a second electron is placed next to the first electron?

  An electron and a proton are separated by a distance of 1.0c4uub m:ccd,nucmnj/ * +/ f0l m. What happens to the magnitude of the force on the first/ ,m/dnc*+uuc:lu0f4nc jmbc electron if a second electron is placed next to the proton?

  An electron and a proton are separated by a distance of 1.0 m. Wh(3r j +:ndmudwat happens to the size of t(dj nur w:d+3mhe force on the proton 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. Wher 72use*1hf; )gilt jd9: qkacn 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 charg:2;1trhusl *efik7d)c gaj9q e at the square's center. Now, identical 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 a7dfh)r(dwmzi z /c ;,v gi3e.tt the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic forigd,ih (./zd)m;evcz 7r3fwtce 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 placed at one of the other vertices?

  Which of the following11rf- rbyt6,*(nr4/ ojlc h4f rswhto is not a vector?

  At twice the distance from a point charge, the strength of the electlzk)qk hsf5 85ric field

  Is it possible to have a zero electric field (nf rrdmm4g ti.yk* ru;m78dh)w ,4rvvalue between a negative and positive charge along the line joining tmgi v 8unky4r r,.h) 7d wmdr*f;4trm(he two charges?

  Is it possible to have a zero elemwcxehyp)5rj 3dv am -/t 0d)gsl 9;1jctric field value between two positive charges along the line joining the two chargehm/c1)syj l3 g) rwedtxa5-09jm vpd; s?

  Electric field lines nea2chiowv6g + m*r psitive point charges

  The electric field shown mpjrvzn53a4cj 3(3 zj uol/e ip* 5an5

  Can electric field lines intersect in free+h q0oxn+jni d p0k/p;o:1uce space?

  A solid block of metal in electrostatic equilibrium is praasa1; -n)gl laced in a uniform electric field. Give a statement concerning the electric field in the block's inter1asg a)-lrn a;ior.

  If a solid metal sphere and a hollow metal sphere of equal diameters are each 4b,yy3xaz )h) cdo n+41rgsfngiven the s,zohxy)n fdgbrs1 a34) cny+4 ame charge, the electric field (E) midway between the center and the surface is

  A cubic block of aluminum rests on a wooden table in a region where a uniform: 8iakzx 5u;o9fp 8qop electric field is dap z8o5xoipuk:q8 f 9;irected straight upward. What can be said concerning the charge on the block's top surface?

  If a conductor is in electrostatic equilibrium near an elsl6za 2qrct0yrev+1ej -(r4o tk 9fy6ectric charge

  A positive point charge is enclosed in a holloq 4/k)xkc.rsuw metallic sphere that is grounded. As coku.)cx r4 ks/qmpared to the case without the hollow sphere, the electric field at a point directly above the hollow sphere has

State three properties of9kk q)9x8 4n.hsq ouqt s1ghp7 conductors in static equilibrium.

State Gauss's law.

  The charge carried by one electron isq sz-n11o7 c 0vzg9qel $e = -1.6 \times 10^{-19} \; C$. 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. yk/z pr08 hc5sHow many more protons than electrons does this piece of plastic8h5/ck0ysz rp have?

  What is the charge on 1 kg of protons/h (n;zi2*pjh hpepnb6, ed b0?

  An atomic nucleus has a charg)f;cc3-2wmdyuhu0 v iq,)ba xe 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 ;cxsf6gp j*6f0+do n/ s7rrc xvalues of 2.0 and -4.0 mC, respectively. What is the magnitude of the electric foro+g rn;7 rs6fdc/ jscx6*0pf xce between them?

  A 1.0-C charge is 15 m3tzzjd sn ;)owy9w+s: from a second charge, and the force between them is 1.0 N. What is the magnitude of the second3+t9wydz; szo )swjn: charge?

  Two 1.0-C charges have a force between them of 1.0 N. How far apart are +9h23pxc szcnthey?

  The force between a q hh-djwk -do: q:(z/j$30 \; mC$ 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 forcu3/;yk.itf bad0nc 2se. If they are moved to a new separation 0uk32csat .db nyfi/;of 8.0 cm, what is the electric force between them?

  Three identical point charges of 2.0 mC are placed on the x-axis. The first chc60 b;e swi71 jzjh5jwarge is at the origin, the second to the right at x = 50 cm, and the third is at the 17j jwhjb5ew 601c zs;i00 cm mark. What 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-adg , :;hj.brz+1n ttxaxis. A charge of +2.0 mC is placed at the origin, t 1n+ b jz.,;x:hdragt-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 following positionsm a6 c+bwgdm7/sp/.nl18 nt: tzngp3x: 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 o1/sbndmt7nc3pz ng x tm/lpg .:8+aw6f the force on the 3.00-mC charge?

  A point charge of +Q is placed at the center of a square, and a second 9g42 yi xega3 -rhekq(w9; fkd44lu hmpoint 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 charge if a third charge of -Q is plackdka9liy4;4mex equ whh9r2- (fgg 4 3ed at the lower-left corner?

  Q1 = 6.0 nC is at (0.30 m, 0); Q2 = -1.0 nC is at (0, 0.10 (*ss+svr fd r14onyr c2sv 09rm); Q3 = 5.0 nC is at (0, 0). What is the magnitude of the net force on the 5rr1rsss4*0v nc sof r+(9d yv2.0 nC charge?

  Q1 = 6.0 nC is at (0.30 m, 0);q;h 6 hms 9t*,nd3 ea7k-h3bg ee2kvpd Q2 = -1.0 nC is at (0, 0.10 m); Q3 = 5.0 nC is at (0, 0). What is the direction of the net forcegvd 3bpnqh e 63h2hkas* t9k ,-em7;de on the 5.0 nC charge?

  Three identical charges of 3.0 mC aexme--jwb y0/+zka r:re placed at the vertices of an equilateral triangle which measures 30 cm on a side. What is the magnitude of the electrostatic force whicx/- -zm+ree ajkbw0y: h acts on any one of the charges?

  Consider point charges of +Q and +4Q, which are separated by 3.0 m. lk zs1i5 -d oq7g;x0si At what point, on a line between the two chargess1o;x5zkq-i0s d g7li, would it be possible to place a charge of -Q such that the electrostatic force acting on it would be zero?

  A +3.0-C charge is at .b/.9dspq sq:t tx3 iethe origin and a +9.0-C charge is at x = 4.0 m. Where on the x-axis can a third charge be placs3bidq :.pt9.eq/tx sed so the net force on it is zero?

  Charge +2q is placed at the origin and charge -q is placed at x = 2a.nqj7vwg3izjyo c-:+xhe 4ph(/ p v4 e2 Where can a third positive charge +q be placed so that the force on it is zeroizcqo7xn/2+e jhgv p 3j(-pewy 44 h:v?

  A copper penny has a mass of 3.0 g. A tn6oh a,, e;2gyt)ojv(2z flsqotal 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 g3,gd6h/ hh( +jerjcyforce of gravity by the attraction of a fixed proton some distance above it. How far above the electron is the proton?j,3 hy6r/g gh(ec+ jhd

  Two 0.20-g metal spheres are hung from a common point by nonc vq5 0e4gr (mrs mwqfn:x,50t3p gwf9konducting threads which are 30 cm long. Both are given identical charges, and the electrostatic repulsion forces them apart (e5 fp90gg:3vr04m fq5 k qnxwmwtrs, until the angle between the threads is $20^{\circ}$. How much charge was placed on each sphere?

  An atomic nucleus haskg -gxw s,nbp/d0(*c 7)qwbfp a charge of +40e. What is the magnitude of the electric field at a distance of 1.0 m fro ),/d*( bqwpp0 gnks-wgxfbc7m the nucleus?

  What are the magnitude and jlfsxur(e-9aq/cri 83re:8e direction of the electric field at a distance of 1.50 m from a 50.0:e/rqc8el3 i frs-ua(rx9 e j8-nC charge?

  A 5.0-C charge is 10 m from a small test charge. What is the magnit:jg 6sqdm(ni8 ude of the electric fieldi:nj6qg (8smd at the location of the test charge?

  A 5.0-C charge is 10 m from w 1otgc2k ,.hya small test charge. What is the direction of the electrio. wyk2gt, h1cc field?

  A 5.0-C charge is 10 m from a small test charge. What iax- c.7 ha9knss the magnitude of the force experienced by a 1.0 nC charge placed at the location of the testa7k .s-nxc h9a charge?

  Two point charges each have a j nzo-5i;w ov:12lt v0mw2 vvdvalue of 3.0 C and are separated by a distance of 4.0 m. What is the electric field at a point midway between the m-2tow2:;5 n v01ovl dwvvji ztwo charges?

  A 5.0-mC charge is placed at the 0 cm mark of a meter stiva l x)w y/:4:y3weovmf7jgu m10qo 3zck and a -4.0 mC charge is placed at the 50 cg3fyxwm1 uwzmoql4a7oe j :0v:y)3/v m mark. What is the electric field at the 30 cm mark?

  A 5.0-mC charge is placed at the 0 cm markm8n.t 5qscfcf 7) el1w of a meter stick and a -4.0 mC charge is placed at the 50 cm mark. At what point on a line joining the two chargtns.5e8 )c lfw c7qm1fes is the electric field zero?

  Two point charges of +3.0 mC and -7.0 mC are placed at x = 0 jg;pzzlh+qm-0 h1/fe and x = 0.20 m. What is the magnitude of l+gmhe0f;/ phz -1jzqthe electric field at the point midway between them?

  Three 3.0 mC charges are at the three z2e, foj:fy) e e7.kjycorners of a square of side 0.50 m. The last corner is occupied by a -3.f7ek:j2 )ye ezyfj,.o0 mC charge. Find the electric field at the center of the square.

  Consider a square whicof9 /4bs9eud; 2m xdkvh is 1.0 m on a side. Charges are placed at the 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). Whmbke 2udf9s/ ;4v dx9oat 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 it is placed in a uniform electrmx;2x jkhydo8s 5* s8oic field. What is the magnitude of this elecmx2dy*;k x hosj85 o8stric field?

  A particle with a charge of z-f 17r +zeehk4.0 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 ( oj*g)r;c pfp pd)l*5.jtb sjis placed in an electric field of 6000 N/C pointing prj j );g s(j5pbcp*f*.ol td)downward. What charge must be placed on the ball for it to be suspended?

  A foam ball of mass 0.150 g carre z w afznwcny;y8 yul, e09;b9b7su5.ies a charge of -2.00 nC. The ball is placed inside a uniform electric;5 aszbu,8 ynncuez w9ey9lbw7;.0 yf 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 carries a charge of +2.0 mC. Whalj- nvg5a:)x at is the magnitude of the electric field 5.0 cm from the sphej) vlg5aa-:nxre's surface?

  A metal sphere of radius 2.0 n 4woo 0akxf5e+;sg k5cm carries a charge of 3.0 mC. What is the electric field 6.0 o4gos5;na fk 0kx+ 5wecm from the center of the sphere?